NFL Flex Scheduling Explained: Which Games Can Move
NFL flex scheduling explained for fans in the United States: which night games can move, how much notice the league owes, and what never changes.
By CricketTaken EditorialPublished NFL Season & Playoffs26 min read
- First season of flex scheduling
- 2006
- Sunday night flex window
- Weeks 5-17
- Standard notice
- 12 days
- Thursday night flexes per season
- 2
Under the NFL's Flexible Scheduling Procedures, the league may move a game that is already on the schedule into a different broadcast window in the same week, and send the game it displaces to Sunday afternoon. The Sunday night game can be changed up to twice between Weeks 5 and 10 and in any week from 11 through 17. The Monday night game can be changed in Weeks 12 through 17. The Thursday night game can be changed at most twice a season, in Weeks 13 through 17. Notice is twelve days for Sunday and Monday night, six days for Sunday night in Weeks 14 through 17, and 21 days for Thursday. Week 18 has no assigned kickoffs at all until Week 17 is over. The opponent, the stadium and the week never change.
The first Monday night flex shows what that means in practice. When the NFL released its 2023 schedule in May, the Monday night game for Week 15 was Kansas City at New England. By the end of November the Patriots had won two of their eleven games, and the league did something it had never done to a Monday night. It took the game away. Chiefs-Patriots went to Sunday afternoon, Philadelphia at Seattle went to Monday, December 18, and everyone holding a ticket for a Sunday in Seattle learned a little over two weeks ahead that the game was now a day later and under the lights.
What flex scheduling means in the NFL: one game, a different window
- 5First week a Sunday night game can be flexed
- 12First week a Monday night game can be flexed
- 13First week a Thursday night game can be flexed
- 21Days of notice for a Thursday flex
Figures from the NFL's published flexible scheduling procedures as they stood for the 2026 season. The league restates them each year and has amended them several times.
An NFL week is not one block of games. It is a row of separately sold television windows: Thursday night, the early Sunday afternoon kickoffs at 1:00 p.m. Eastern, the late afternoon games at 4:05 and 4:25, Sunday night, and Monday night, with Saturdays added in the back half of December. Each window belongs to a broadcast partner that has paid for it. Three of them are standalone, meaning one game with the whole country watching, and the afternoon windows carry everything else regionally.
The schedule published each spring assigns all 272 regular-season games to a week and, through Week 17, to a window. Flex scheduling is the league reserving the right to reassign the window later. It is always a swap. One game is "flexed in" to a standalone night, and the game that was there is "flexed out" to Sunday afternoon, so the number of games in each window stays the same and nobody's contract comes up short.
Only certain games are eligible to move in. The procedures limit the pool to Sunday afternoon games and games listed as "TBD," which is the label the league puts on matchups it has deliberately left without a day. A game already sitting in another standalone window cannot be poached. The league cannot take Monday's game for Sunday night, or Thursday's for Monday.
The decision belongs to the league office. Its broadcasting department makes the call after talking to the networks involved, and the clubs are told rather than asked. That point is easy to lose in the complaints that follow a flex: a team has no veto over being moved into prime time and no veto over being moved out of it.
Flex is also narrower than the word suggests. It is a tool for the standalone windows and a handful of late-season Saturdays. The great majority of games kick off exactly when the spring schedule said they would, and in most weeks of most seasons nothing is flexed at all. How those spring dates are chosen to begin with is a separate process, covered in our explainer on how the NFL schedule is made.
Sunday night flex scheduling rules: twice early, any week late
Sunday night is where the idea started and where it is still used most. The league treats that game as its weekly showcase, and the flex rules give it the widest window of the three nights.
There are two phases. Between Weeks 5 and 10 the league may change the Sunday night game no more than twice. From Week 11 through Week 17 it may change it in any week, with no cap on the total. Weeks 1 through 4 are untouchable, for a sensible reason: a month into a season nobody knows enough to say that the April guess was wrong.
In every one of those weeks the schedule prints a tentative Sunday night game. That game is played at night unless the league announces otherwise. Supporters of the two teams listed should treat the kickoff as likely, and supporters of every other team playing on that Sunday afternoon should understand that their game is, on paper, a candidate.
The cap of two in the early phase is a concession to uncertainty. A team that is 1-4 in early October may be 5-4 by Thanksgiving, and the league is slower to give up on a game in Week 7 than in Week 15. The late phase is unlimited because December is when the gap between a meaningful game and a dead one is widest and easiest to see.
| Package | Weeks it can be flexed | Uses allowed | Minimum notice |
|---|---|---|---|
| Sunday night, early phase | 5 through 10 | Two in total | 12 days |
| Sunday night, late phase | 11 through 17 | Any week | 12 days through Week 13, then 6 |
| Monday night | 12 through 17 | Any week | 12 days |
| Thursday night | 13 through 17 | Two in total | 21 days |
| Week 18, all windows | 18 | Entire slate unassigned | Set after Week 17 ends |
When a Sunday night game is replaced, the displaced game does not vanish from television. It drops into one of the afternoon windows on one of the two Sunday afternoon networks, at 1:00 or in the late slot, and is shown regionally like any other afternoon game. For the home crowd that means a kickoff four to seven hours earlier than planned, which is the mild version of a flex. The game that moves in goes the other way, from afternoon to an 8:20 p.m. Eastern kickoff, and that is the one that changes people's Sunday.
Twelve days, then six: how much warning the league must give
Every flex comes with a deadline, and the deadlines are the part of the policy that matters to anyone who has to be somewhere.
For Sunday night changes in Weeks 5 through 13, the announcement must come no later than twelve days before the game. Count back from a Sunday and that lands on the Tuesday of the previous week. So the league decides with one full weekend of games still to be played before the weekend in question, which is why an early or mid-season flex sometimes looks wrong by the time it arrives. The decision was made on information a week and a half old.
From Week 14 through Week 17 the Sunday night notice shrinks to six days. Six days before a Sunday is a Monday. In practice the league can now wait until the previous weekend's results are in, look at the playoff race as it actually stands, and then pick the Sunday night game. A fan gets less than a week's warning. The trade is deliberate: later in December the standings shift so fast that a twelve-day-old judgment is frequently a bad one.
Monday night uses the twelve-day rule throughout its window, which puts the deadline on the Wednesday of the week before. Thursday night gets 21 days, three full weeks.
Two details are worth knowing. First, these are latest dates. "No later than" allows the league to announce earlier, and it often does when a decision is obvious, as it did for that first Monday night change in 2023, which came out several days ahead of the deadline. Second, the same deadlines govern moves that never make the news. A Sunday game sliding from 1:00 to 4:25 Eastern is announced on the same clock as a move into prime time.
The differing lengths follow a simple logic. The more a move disrupts the people involved, the longer the warning. Afternoon to night on the same day gets the shortest notice. A game moving to a different day gets twelve. A game being pulled three days forward into a Thursday, taking half a practice week from two teams, gets the most.
Can Monday Night Football be flexed? From Week 12, yes
For its first 53 seasons the Monday night schedule was fixed in the spring and stayed fixed. Whatever looked good in April was what America got in December, and the package's long story, told in our history of Monday Night Football, includes a fair number of late-season games between teams that had stopped mattering by Halloween.
That changed with the television contracts that took effect in 2023. The league may now flex the Monday night game in any week from 12 through 17, on twelve days' notice. A Sunday afternoon game moves to Monday, and the original Monday game moves to Sunday afternoon.
The first use came at once. Philadelphia at Seattle replaced Kansas City at New England in Week 15 of 2023, and Seattle won 20-17.
Monday starts seven weeks later than Sunday night because a Monday flex asks more of everybody. It changes the day. A Sunday afternoon game that becomes a Sunday night game costs a traveling fan a later flight home, or perhaps a hotel night. A Sunday game that becomes a Monday night game costs a day of work on Monday and probably another on Tuesday, and a visiting supporter who booked a Sunday evening flight home has a ticket to a game that kicks off 24 hours after the plane leaves.
It also reaches into the following week. Both teams flexed into Monday lose a day of preparation for their next game, and the league has to check that neither is due to play on the following Thursday, since a Monday-to-Thursday turnaround is something the schedule makers avoid. The teams flexed out of Monday gain a day instead. One move touches four clubs' calendars across two weeks.
Weeks with two Monday games
Some weeks carry a Monday doubleheader, two games with staggered or overlapping kickoffs. The flex right still applies to the package, but the arithmetic is harder, because there are two slots to fill with worthwhile games and two sets of following-week consequences. The league has so far used its Monday power sparingly. Having it at all has probably changed the spring schedule more than the autumn one, since a weak late-season Monday pairing is no longer a risk the league is forced to carry.
Can Thursday Night Football be flexed? Twice a year, on three weeks' notice
Yes, and this is the narrowest flex of the three and the one that came closest to not existing.
The rule allows the league to change the Thursday night game in Weeks 13 through 17, no more than twice in a season, with the announcement at least 21 days before the game. A Sunday afternoon game is pulled forward to Thursday. The original Thursday game is pushed back to Sunday.
Read that again, because it is the only flex that moves a game earlier. Two teams that expected a normal week, with a Sunday game followed by another Sunday game, are told three weeks out that the second of those is now on a Thursday. Their recovery time between the two drops from seven days to four. The collective bargaining agreement between the league and the NFL Players Association regulates what a club may ask of players in a short week, and coaches cut contact and practice time accordingly, but the physical cost of playing twice in five days is the standing objection to Thursday football and a flex imposes it on teams that were not scheduled for it.
That is why the vote was so close. The proposal was put to the owners in March 2023 and tabled when it became clear the support was not there. It came back in May and passed 24 to 8, exactly the three-quarters majority the league's constitution requires. The clubs reported to have voted no were the Giants, Jets, Bears, Packers, Lions, Raiders, Bengals and Steelers. John Mara, the Giants' co-owner, had said publicly that moving a game to Thursday on short notice was abusive toward fans who buy tickets and plan travel. An owner using that word about a league proposal is rare enough to be worth recording.
The rule that passed was hedged in three ways. It was limited to the final five weeks before Week 18. It was capped at two uses. And the notice period was set at 28 days, later reduced to 21 by a vote of the owners in the spring of 2025.
A fourth constraint does as much work as the other three. No team may be scheduled for more than two short-week Thursday games in a season, and reporting on the rule has described a further limit on how many of those can be on the road. Since many clubs have already used one or both of their Thursdays by December, the pool of games that can legally be flexed in is thin before anyone asks whether they are any good.
The power sat unused through all of 2023. Its first use came in Week 16 of 2024, when Denver at the Los Angeles Chargers was moved to Thursday, December 19, and Cleveland at Cincinnati was moved to the following Sunday.
Week 18, where every kickoff is to be determined
The final week is not flexed. It is unscheduled.
When the schedule comes out in the spring, the sixteen Week 18 games appear with opponents and stadiums and nothing else. The procedures say so in plain terms: the scheduling of the Saturday, Sunday afternoon and Sunday night games is not assigned. Everything is decided after the last Week 17 game ends, and announced that night or the next day.
- SpringSixteen division games are listed for Week 18 with opponents and sites but no day and no kickoff time.
- Through Week 17The league tracks which Week 18 games could decide a division title, a wild-card berth or a seed.
- After Week 17 endsDays and times for all sixteen games are announced, usually within hours of the final whistle.
- SaturdayTwo games with playoff implications are placed in a late-afternoon and a prime-time slot.
- Sunday afternoonThe bulk of the slate is split between the early and late windows, with linked games kicked off together.
- Sunday nightOne game, ideally with something at stake for both teams, closes the regular season.
The sequence the NFL follows for its final regular-season weekend, as described in its flexible scheduling procedures. The league does not publish the full criteria it applies at each step.
Three design choices sit behind that.
All sixteen games are between division rivals, and have been since 2010. The league made that change so the last weekend would be thick with games that decide division titles, and so that fewer teams with nothing to play for would be facing teams with everything to play for.
The Sunday night game is the last of the 272, and the league wants it to be a game whose stakes cannot be dissolved by something that happened at 1:00 that afternoon. The ideal is a meeting in which the winner is in the playoffs and the loser is out. Failing that, the league looks for a game that at least one team must win no matter what else has occurred. This is harder than it sounds, and in some seasons the choice has been the best available rather than a good one.
The third choice is about fairness. Games whose results bear on each other are placed in the same window wherever possible, so a team does not take the field at 4:25 already knowing that a result at 1:00 has made its own game meaningless, and so that no coach can rest his starters on information a rival did not have. The tiebreakers that make these links so tangled are set out in our guide to how NFL playoff seeding works, and the letters that appear in the table as teams clinch are explained in the piece on reading the NFL standings.
Two Saturday games were added to the final weekend when the season grew to 18 weeks in 2021. They are chosen on the same principle, with one extra wrinkle: a game moved to Saturday must not hand anyone playing on Sunday an advantage, so the Saturday picks tend to be games whose outcome is self-contained.
The quieter moves: Saturday pools, afternoon shifts and cross-flexing
Prime-time swaps get the headlines. Three other kinds of change happen more often and are noticed less.
Late-season Saturdays
The NFL stays off Saturdays for most of the fall, for a legal reason explained in our guide to why the league avoids Saturday games. Once the college regular season is over in mid-December, it moves in. For those weeks the spring schedule names a small pool of matchups and marks each "TBD." Some will be played on Saturday. The rest will be played on Sunday. Which is which gets announced during the season, by a deadline the schedule itself states, typically a couple of weeks ahead.
This is flex scheduling by another name, and it is more disruptive to a traveling fan than a Sunday night change because the day moves. The only protection is the label. A game marked TBD in the spring is the league telling ticket buyers in advance that the day is not settled.
Early window to late window
A Sunday afternoon game can be moved between the 1:00 p.m. Eastern kickoff and the 4:05 or 4:25 kickoff. The league does this to put a strong game into the late window, where one network has the national doubleheader audience, or to balance the number of games in each slot after a prime-time flex has taken one out. The notice periods are the same as for Sunday night.
Three hours is not much. For a West Coast team playing in the East, though, the early window is a 10:00 a.m. kickoff by the body clock, and a move to the late slot is one the visitors rarely mind.
Cross-flexing
For decades the two Sunday afternoon networks divided games by conference. A game with an AFC road team belonged to one, a game with an NFC road team to the other. Since 2014 the league has been able to "cross-flex" a game from one network to the other regardless of conference. The purpose is distribution: if one network's slate is stacked in a given week and the other's is thin, a good game can be moved across so that more of the country sees it.
A cross-flex by itself changes the channel and nothing else. It often travels with a time change, though, and it is one reason a game's listed broadcaster in the spring schedule should be read as provisional. Under the current television agreements the old conference split has been loosened further, and the league assigns many afternoon games to a network at the time the schedule is built.
What flex scheduling can never change
Three things are fixed the day the schedule is published, and no flex touches them.
The opponent. Who plays whom is set by a formula that is complete the moment the previous regular season ends: six division games, four against a division in the same conference, four against a division in the other conference, two based on the prior year's standings, and a seventeenth game explained in our guide to why the NFL season is 17 games. Flex cannot swap one opponent for another. A bad team stays on the schedule; it just loses its night game.
The stadium. The home team stays the home team and the game stays in its building. A flex has never moved a game to a different city. Games have been relocated by hurricanes, wildfires and blizzards, but that is emergency rescheduling under a different part of league policy, and it should not be confused with a flex.
The week. A Week 15 game is played in Week 15. In NFL bookkeeping a week runs from Thursday through Monday, so the widest a game can travel is from Sunday to the Thursday before or the Monday after. It cannot jump to the next weekend, and it cannot land in a team's bye. Our piece on how the bye week works covers why that week off is fixed in the spring like everything else.
Nor does a flex alter what the game is worth. It counts the same in the standings and in every tiebreaker whether it kicks off early on Sunday afternoon or late on Monday night, and a division game stays a division game.
A fourth limit is implied by the first three. The league cannot use flex to fix a mistake in the schedule's structure. If a team's season collapses and five of its games were set for prime time, the league can remove it from some of those windows within the caps and deadlines described above. It cannot remove it from all of them, and every season one or two national games are played between teams the country has stopped watching.
Which games get picked, and which ones the league cannot touch
The league has never published a formula for choosing a flexed game, and it would be surprising if one existed. What it has said, repeatedly, is that the aim is to put games with playoff consequences in front of the largest audience. From the choices made since 2006, the working criteria are clear enough.
Stakes come first. A game between two teams in contention beats a game with one, and a game that could decide a division beats a game that merely matters. Records are the crude measure. The better measure is what the result does to the playoff field.
Audience comes second, and it would be naive to pretend otherwise. Some franchises draw a national television crowd whether they are good or not, and a 7-6 team with a huge following is likelier to be moved into prime time than an 8-5 team without one. Quarterbacks matter in the same way. An injury to a star in November has flexed more than one game out of a night window.
Then come the constraints, which rule out many of the games a viewer would choose.
- Prime-time appearance limits. The league caps how often one team can appear in standalone night games in a season. The spring schedule can give a club only so many, with a little room left for a flex on top, and the figures have been adjusted more than once. A popular team that has reached the ceiling cannot be flexed into more.
- Short weeks. The Thursday limits described above apply, and the league avoids creating a Monday-to-Thursday turnaround.
- Afternoon protections. The two Sunday afternoon networks paid for good games too. Their contracts let them shield a limited number of games from being taken for prime time. The details have changed with each round of television deals and the protected games are not announced, which is why a matchup that looks like the obvious flex sometimes stays put.
- What is left behind. The game being flexed out has to go somewhere, and the afternoon network receiving it has to be left with a workable slate.
The last consideration is the simplest. A flex needs a replacement that is clearly better. If the tentative Sunday night game is mediocre and the afternoon alternatives are also mediocre, the league leaves the schedule alone. Moving thousands of people's plans for a marginal gain in the quality of the game is a trade it has generally declined to make.
Reading "TBD" and "subject to change" with tickets and a flight booked
The practical question for anyone traveling to a game is how exposed a particular date is. The answer depends almost entirely on the week and the window the game was first given.
| If the spring schedule says | It can become | Latest you would be told |
|---|---|---|
| Sunday afternoon, Weeks 1-4 | Nothing else | Fixed |
| Sunday afternoon, Weeks 5-11 | Sunday night, or the other afternoon window | 12 days before |
| Sunday afternoon, Week 12 | Sunday night or Monday night | 12 days before |
| Sunday afternoon, Week 13 | Sunday night, Monday night or the Thursday before | 21 days for Thursday, 12 otherwise |
| Sunday afternoon, Weeks 14-17 | Sunday night, Monday night or the Thursday before | 21 days for Thursday, 12 for Monday, 6 for Sunday night |
| "TBD" in a late-season week | Saturday or Sunday | The deadline printed on the schedule |
| Any Week 18 game | Saturday, Sunday afternoon or Sunday night | After Week 17 ends |
A few working rules follow from that table.
A game in Weeks 1 through 4 is safe. So is a game already scheduled for a Thursday before Week 13 or a Monday before Week 12; those cannot be flexed out because the windows are not yet flexible.
A game listed in prime time in the late-season windows can be flexed out to Sunday afternoon. That moves the kickoff earlier on the same day for Sunday night games and a day earlier for Monday games. Fans tend to plan for a game being moved later. Being moved earlier is the one that catches people on a Sunday morning flight.
A ticket is for the game, not the kickoff. Clubs honor it at the new day and time, and as a rule they do not treat a flex as grounds for a refund. The phrase "subject to change" on a ticket or a schedule is the notice.
For a December trip, the cautious plan is to arrive the day before the earliest possible kickoff and leave the day after the latest. For a Sunday game in Weeks 14 through 17 that means being free from Thursday to Tuesday, which is more than most people can manage, and so the realistic version is to book flights that can be changed. For Week 18, book nothing that cannot be moved between Saturday and Sunday.
The teams themselves live with the same uncertainty. Charter flights, hotel blocks and practice schedules are arranged around a kickoff that may move, and a club flexed to Monday has to rebuild the following week as well.
Why the league wanted it: dead December games and the 2006 Sunday night contract
Before 2006 the NFL's premier weekly game was on Monday night, and its schedule was written in the spring and never amended. This worked well enough in September. By December it regularly produced a national broadcast between two teams with losing records, on the one night of the week when no other game was available to watch.
The problem is built into the sport. Nobody can predict in April which teams will be good in December. Injuries end seasons in a single play, the league's own structure of a salary cap and a reverse-order draft is designed to shuffle the standings from year to year, and every season several of the playoff teams are clubs that missed out the year before. A fixed prime-time schedule is a forecast eight months out. Forecasts that far out are often wrong.
The league's broadcast partners had complained about this for years, and the television negotiations of 2005 gave the league a chance to answer. In the contracts that began with the 2006 season, the premier package moved from Monday night to Sunday night and went to a broadcast network that had been without NFL games for eight seasons. Monday night moved to cable. Part of what made the Sunday night package the more valuable one was a new clause: in the closing weeks of the season, the league could change the game.
Sunday was the natural night to try it. Moving a game from Sunday afternoon to Sunday night keeps it on the same day, so stadium staffing, team travel and most fans' plans survive. Moving a game to Monday changes the day, and in 2006 nobody was prepared to ask for that.
The benefit ran in more than one direction. The network got better games and the league got a better price for the package. Viewers got a meaningful game on most late-season Sunday nights. And good teams that had been overlooked in April, the surprise division leaders that every season produces, got a national audience they would otherwise have waited a year for. The cost fell on the afternoon networks, which lost strong games, and on the people in the stands.
How the policy grew from seven weeks to three nights
Flex scheduling has expanded in one direction only. Each change has given the league more weeks, more windows or shorter notice, and none has been reversed.
| Season | What changed |
|---|---|
| 2006 | Sunday night flex introduced for Weeks 10 through 15 and for the final week |
| 2010 | The final weekend becomes all division games, giving the last Sunday night pick more to work with |
| 2014 | Sunday night window opens at Week 5, with two changes allowed before Week 11; cross-flexing between afternoon networks begins |
| 2021 | The season grows to 18 weeks; Week 18 becomes the fully open week and gains two Saturday games |
| 2023 | Monday night flex from Week 12 and Thursday night flex from Week 13 are approved, the latter with 28 days' notice |
| 2025 | Thursday night notice is cut from 28 days to 21 |
In 2006 the arrangement covered seven weeks: 10 through 15, and the last one. In that first season the Sunday night slot in those weeks was left blank on the published schedule, and the league filled it as the weeks approached. From the following year a tentative game was printed, which could then be replaced. The afternoon networks were given protections from the start, each allowed to shield a game in most of the flex weeks and required to name those games early in the fall, long before anyone knew which would matter. That requirement produced some odd results, with networks protecting games that turned out to be worthless and losing ones they had not thought to guard.
The 2014 change took the window back to Week 5 and accepted that a schedule can go wrong by early October. The same year brought cross-flexing, which is a quieter power than moving a game into prime time but one the league uses far more often.
The 2023 expansion was a different kind of step. Until then, every flex had kept a game on the day it was scheduled or moved it within a pool that fans had been warned about. Monday and Thursday flex broke that principle, and the 24-8 vote on Thursday showed how many owners understood what was being given up. The league's position was that the notice periods were long and the power would be used rarely. So far the second half of that has held. Thursday flex went unused in its first season and was used once in its second.
Whether it continues to hold is a fair question. The notice period for Thursday has already been shortened once, the television contracts that fund the league reward better games in standalone windows, and the newer windows on the calendar, among them the Thanksgiving slate, Christmas Day and the growing list of games played overseas, all sit outside the flex system for now. The history since 2006 suggests which way the next change will point. For more on the sport's calendar and rules, our American football section collects the rest.