Off-Peak Travel Is More Popular Now, and Harder to Time

Fall travel deals are shrinking: Hopper data reported by CNN on Sept. 5, 2026 shows domestic U.S. fall fares running about 1% above summer, and the fall saving on U.S.–Europe airfare down to 22% from 33% in 2023. For you, that means a fall trip is no longer automatically cheaper or quieter. Demand in the European Union and at several of the busiest U.S. national parks has moved out of June through August since 2019, even though U.S. air travel overall has barely shifted. Quiet weeks still exist, but they now hinge on reservation windows, school calendars, local events, weather and price, and they move from one destination and year to the next.

Key takeaways

In the EU, hotel and other tourist-accommodation nights in October 2025 were 14.9% above October 2019, against 5.5% growth for July, according to Eurostat monthly data.
Across nine heavily visited national parks, June through August fell from 45.5% of the year's recreation visits in 2019 to 42.3% in 2025. April–May and November–March gained more than September–October did.
TSA checkpoint data shows no comparable shift for U.S. air travel overall: June through August was 27.3% of the year's screenings in both 2019 and 2025.
Fall discounts are shrinking. Hopper's company data puts the fall-versus-summer discount on U.S.–Europe airfare at 22% in 2026, down from 33% in 2023.
A real off-peak window is usually a few specific days. To find one, check monthly visitor data, the destination's rule dates, local school calendars and events, then prices.

What it means for you

How much this matters depends on where you're going.

If you're flying to Europe this fall, expect a smaller saving than a few years ago, on fares that are also 33% higher than last fall. Airlines are stretching routes into late fall, and American's network chief still calls January and February clearly off-peak. See "Why the quiet weeks keep moving" below.
If you're planning a domestic fall trip, don't assume fall is cheaper. Expedia found fall lodging 20% pricier than summer at its top 10 U.S. destinations. Compare prices after you've settled on quiet dates (step 5 of the five-step method), and see the FAQ for the cheapest night to book.
If you're visiting a U.S. national park, check this year's rules first. Arches, Glacier and Yosemite dropped park-wide reservations for 2026, though Glacier and Yosemite may divert traffic on busy days, and Rocky Mountain's timed entry runs through Oct. 12 (Oct. 18 for Bear Lake Road), according to the park's reservations page. At Rocky Mountain, the weeks just outside the reservation window are no longer as quiet as they were. See "Rules that now set the calendar" and the Rocky Mountain worked example.
If you're thinking of Venice this fall or in 2027, no day-tripper fee applies for the rest of 2026, because the trial ended July 26. Any later fee still needs approval from the city's governing bodies, so check the city's access-fee site before booking; the FAQ has the details.

What the data does and doesn't show

"Shoulder season" means the weeks between a destination's peak and its low season. The claim that shoulder travel is growing can be tested by measuring each season's share of a full year, which strips out overall growth. The table compares 2019, the last pre-pandemic year, with 2025, the latest full year in each data set.

Data set	Measure	2019	2025	What it shows
Eurostat, EU tourist-accommodation nights	June–August share of year	43.2%	42.2%	A small shift away from summer; October nights grew 14.9% vs. 2019 and July nights 5.5%
Eurostat, nights by foreign residents	Growth vs. 2019	—	October +20.1%, July +8.3%	Nights by non-residents of each country grew faster than the total in both months
NPS visitor use statistics, nine parks combined	June–August share of year	45.5%	42.3%	Summer share fell; April–May rose from 15.1% to 16.7%, November–March from 17.5% to 18.7%, September–October barely moved (22.0% to 22.3%)
TSA checkpoint throughput	June–August share of year	27.3%	27.3%	No flattening in U.S. air travel overall; September–October edged from 16.3% to 16.7%

The nine parks are Acadia, Arches, Glacier, Grand Canyon, Great Smoky Mountains, Rocky Mountain, Yellowstone, Yosemite and Zion. They were picked for this comparison as heavily visited parks with clear seasons, not as a representative sample of the whole park system. Fires and road closures move individual parks' figures in any given year. Seven of the nine still had fewer July visits in 2025 than in 2019, while October visits rose at seven of them, including 83% at Yellowstone and 63% at Glacier.

The European Travel Commission's Q2 2026 report gives the same direction for this year. It describes trips spreading more evenly across the year and says September bookings were rising strongly across Europe, with travelers citing extreme weather and crowding.

The data does not show more people traveling overall in 2026. TSA screenings from January through September 2026 ran 0.8% below the same months of 2025, with June through August down 2.6% and September down 2.0%, in a year when, as CNN and CNBC reported, jet-fuel costs tied to the war with Iran pushed fares up. September fell almost as much as summer, so TSA counts show no clear 2026 move toward fall either (Eurostat's 2026 figures run only through July, and full-year park figures don't exist yet). Any shift toward off-peak travel this year is about how a roughly flat number of travelers split their trips, not a boom in trips.

Why the quiet weeks keep moving

Airlines now plan for longer seasons

Carriers are adding capacity in former off-months, which changes both fares and crowds. In interviews with CNBC in July 2026, a Delta network executive said the airline now does more maintenance in summer to keep planes available for fall. Delta extended its New York JFK–Catania route through Jan. 3, after ending it on Oct. 24 the year before, and United kept Newark–Palermo flying through Dec. 16 instead of stopping in September. American's network chief called October "becoming a peak month" to Europe but said January and February are still clearly off-peak.

Discounts shrink as demand spreads

Higher fall demand pushes fall prices toward summer prices. Hopper Technology Solutions data reported by CNN in September 2026 shows U.S.–Europe fares falling 33% from summer to fall in 2023 but only 22% in 2026. Fall fares to Europe are also 33% higher than last fall, so a percentage saving can still mean a larger bill. CNN also reported that, with dynamic pricing (prices updated continuously from demand) now common in lodging, hotels no longer cut rates automatically when September begins. All of these are company figures, not official statistics.

Flexible schedules and heat change who travels when

Hopper links the vanishing domestic fall discount partly to flexible remote work, which lets more travelers go outside summer. A Delta executive told CNBC that the airline's target travelers tend to be "a little bit older and a little bit wealthier," and CNBC pointed to baby boomers with more free time and to the record heat across Europe in late June 2026. Each of these increases fall demand. None of them increases it evenly, which is why one destination's October can be calm while another's is full.

Rules that now set the calendar

Caps and fees define a destination's peak by date, and travelers move around those dates. Rocky Mountain National Park shows this pattern. Its 2026 timed-entry system requires a reservation to enter between 9 a.m. and 2 p.m. from May 22 through Oct. 12. The Bear Lake Road corridor needs its own reservation from 5 a.m. to 6 p.m. through Oct. 18, and that permit also covers the rest of the park.

Entering before 9 a.m. or after 2 p.m. needs no reservation. Reservations at the Aspenglen, Glacier Basin, Moraine Park and Timber Creek campgrounds include timed entry (campers can enter from 1 p.m. on the first day of their reservation), and overnight wilderness permits and horseback-riding bookings also count as entry. A reservation costs a $2 Recreation.gov processing fee, and a park entrance pass is still required. Dates are released monthly (October 1–18 opened on Sept. 1), with more permits released each evening at 7 p.m. Mountain time.

The park's February 2026 news release lists end dates one day later (Oct. 13 and Oct. 19), so check the reservations page before you travel.

In NPS monthly counts for the park, the peak months fell between 2019, before the park's first pilot timed-entry system in 2020, and 2025, when reservations ran from May 23 to mid-October. July was down 21.6%, August 18.6% and September 23.1%. Months mostly or entirely outside the window grew: May, when the window covered only the last nine days, was up 13.9%, and November was up 33.8%. October, about half inside the 2025 window, rose 2.2%.

That pattern is consistent with some demand moving to unreserved weeks, though NPS has not said so and weather also moves the numbers. The practical point holds either way: the weeks just outside the window are no longer as quiet as they were.

Rules also change from year to year. A National Park Service announcement on Feb. 18, 2026 ended park-wide reservation systems at Arches, Glacier and Yosemite for this year. Yosemite and Glacier instead plan temporary traffic diversions when parking or safety limits are reached, so a busy day can still be cut short.

Venice's day-tripper fee targeted spring and early-summer weekends and holidays rather than August. The city's official 2026 calendar had 60 fee days: every Friday through Sunday from April 3 to July 26, plus Easter Monday (April 6), April 27–30 and June 1–4. On those days the fee applied from 8:30 a.m. to 4 p.m. for the historic city, not the smaller lagoon islands, and cost €5 if paid at least four days ahead or €10 after that. Children under 14 entered free, and guests staying overnight anywhere in the Municipality of Venice paid nothing but had to register their exemption.

Preliminary city figures reported by VeneziaToday show paid entries averaging about 13,940 per fee day in May, 10,179 in June and 9,597 in July. Residents of the Veneto region don't pay, so these counts cover only part of all day visitors. Even so, they put May, with its holiday weekends, ahead of midsummer.

A five-step way to find the window

Get monthly visitor data for the place itself. Use NPS visitor use statistics for parks, or Eurostat and national statistics offices for European regions. Convert each month to a per-day average so 30- and 31-day months compare fairly.
Calculate a crowd ratio for each month with the formula below. Months under about 0.5 are half as busy as the peak or less. The cutoff is a rule of thumb, not an official threshold.
Mark rule dates on a calendar: reservation start and end dates, release days, fee days and seasonal road or facility closures. Days just outside a reservation window can absorb visitors who could not get a permit, so treat them as days to check, not as guaranteed quiet ones.
Mark local demand spikes. These include federal holidays, school days off in nearby districts, and festivals posted on the local tourism office's events calendar.
Check prices last. In Google Flights, the price graph shows fare trends by week or month and flags when a fare is lower than usual for similar trips. Compare the candidate dates with the weeks on either side.

crowd ratio = (visits in month ÷ days in month)
              ÷ (visits in peak month ÷ days in peak month)

visits in month  = recreation visits reported for that month
days in month    = 28 to 31
peak month       = the month with the highest per-day average that year

Monthly data hides swings within a month. A month with a ratio of 0.5 can open busy and end almost empty, which is why the rule-date and event steps narrow the result to specific days.

Worked example: Rocky Mountain NP

Suppose a traveler wants a quiet weekday trip to Rocky Mountain National Park in fall 2026. The dates below are an illustration of the method on one year's calendar, not a standing recommendation; the steps carry over to any year. The 2025 NPS counts give per-day averages of 24,620 in July (the peak), 21,797 in August, 19,273 in September, 12,328 in October and 5,502 in November.

Month	Crowd ratio, 2019	Crowd ratio, 2025
May	0.29	0.42
July	1.00	1.00
August	0.85	0.89
September	0.80	0.78
October	0.38	0.50
November	0.13	0.22

For October 2025: 382,163 visits ÷ 31 days = 12,328 a day. Then 12,328 ÷ 24,620 = 0.50. September, often called shoulder season, is still about four-fifths as busy as July at this park. October is the real step down, though it is busier relative to July than it was in 2019, when its ratio was 0.38.

The rule calendar narrows October to specific days. The 9 a.m.–2 p.m. reservation requirement for most of the park runs through Monday, Oct. 12, which is also Columbus Day, a federal holiday. The Denver Public Schools 2026–27 calendar marks Oct. 12 as a conference day, a separate category from its no-classes days, so Oct. 10–12 may become a long weekend for some Front Range families. In nearby Estes Park, Elk Fest is scheduled for Oct. 3–4, 2026. It coincides with the elk rut, whose peak the park says generally lasts from mid-September to mid-October; the park calls the scene of elk herds against fall colors "hard for most folks to resist."

That leaves Tuesday, Oct. 13, through Thursday, Oct. 15 as the candidate window. It falls after the holiday weekend and on school days for Denver students. It is also the first unreserved stretch for most of the park according to the reservations page, though the news release keeps Oct. 13 inside the system. Some visitors who missed permits may aim for these days, and they still fall at the tail of the rut's peak.

Bear Lake Road still needs a reservation from 5 a.m. to 6 p.m. through Oct. 18. On any reserved day, the fallbacks are entering outside the reservation hours (before 9 a.m. or after 2 p.m. for most of the park, before 5 a.m. or after 6 p.m. for Bear Lake Road) or trying the 7 p.m. release the evening before. The other trade-off is weather. Trail Ridge Road normally closes to through traffic in mid-October, although in 2025 it stayed open until Nov. 14, according to the park's closure notice. Waiting until after Oct. 19, the later of the two published end dates, removes every reservation requirement but raises the chance that the high road is shut.

The exact days will not repeat. The rest-of-park end date moves from year to year: the 2025 announcement put it at Oct. 14, the 2026 reservations page at Oct. 12. Columbus Day, the second Monday in October, falls on Oct. 11 in 2027. To reuse the example for a later year, swap in that year's reservation dates, school calendar and events calendar, then look for the first weekdays that clear all three. What carries over is the pattern: at this park in 2025, October ran at about half of July's daily visits, but which October days are quiet depends on the calendar.

Frequently asked questions

Are domestic U.S. flights still cheaper in fall than in summer?

Mostly not in 2026. Hopper Technology Solutions told CNN that domestic fall fares were about 20% below summer four years ago and are about 1% above summer this year. Expedia found lodging 20% higher and flights 2% higher in fall than in summer for its top 10 U.S. destinations, comparing May 25–Sept. 7 with Sept. 7–Nov. 26, CNBC reported. Both are company figures, so treat them as indicators rather than a guarantee for any route.

Are fewer Americans booking Europe this fall?

Booking data suggests a dip, though it does not show the cause. Cirium figures cited by CNN show U.S.-to-Europe bookings for July 2026 about 6% below July 2025, with a similar decline for fall travel booked over the summer. Luxury travel is an exception: the Virtuoso agency network reported fall 2026 bookings up 59% on last year.

Do I need to pay Venice's access fee on a fall visit?

Not this year. The 2026 fee ran as a trial and ended on July 26, and the city's access-fee site says that since July 27 Venice can be visited without any payment or exemption request. Nothing is set for later years: the site says any fee after 2026 would need approval from the city's governing bodies. Anyone planning a 2027 trip should check that site for a new calendar before booking.

Which popular national parks dropped reservations in 2026?

Arches and Yosemite require no advance entry reservations in 2026, including Yosemite's February–March firefall period. Glacier dropped its park-wide vehicle reservation but still manages Going-to-the-Sun Road traffic and limits parking at Logan Pass. Rocky Mountain is the only one of the four still using timed entry, from late May to mid-October.

Which night of the week is usually cheapest for hotels?

Expedia's head of public relations told CNN that Sunday is typically the cheapest night to stay. A shoulder-season trip that includes a Sunday night can therefore pair a lower nightly rate with a quieter time of year. The pattern varies by city and is not guaranteed for any single property.

Before you book a shoulder trip

Download the destination's monthly visitor figures and calculate per-day crowd ratios for at least two recent years.
Write down this year's reservation, fee and closure dates from the operator's own page, including release days such as Rocky Mountain's Sept. 1 opening for October.
Check school calendars for the biggest nearby districts and the local tourism office's events calendar, and remove holiday weekends and festival days.
Compare prices for the remaining days with the weeks on either side. Then confirm road and weather conditions in the days before you leave, because seasonal closures depend on weather.