How Axel worksFlying in August: prices, crowds and delays
Updated October 26, 2026 · Data: Axel, Transportation Security Administration, U.S. Bureau of Transportation Statistics, Expedia Group · How this guide was made
August is about average for domestic flights: in Axel's fares, August 2026 departures ran 1% below the average month (June 2026 to May 2027 departures) 1. Airports are about average in August (4% above the average day in 2025) 2, and 75% of August flights arrive on time, #10 of 12 months (1.5% cancelled) 3.
Search flights in August 2027 Opens a day-by-day date picker with live prices; choose your airports first.
Is August a cheap month to fly?
August is about average for domestic flights: in Axel's fares, August 2026 departures ran 1% below the average month (June 2026 to May 2027 departures) 1. International trips from the U.S. ran 2% above their average month in August 1.
- January-12%
- February-2%
- March-1%
- April-2%
- May-3%
- June+1%
- July0%
- August-1%
- September+1%
- October-4%
- November+10%
- December+15%
Source: Axel fare data 1
By destination, August fares against each region's average month: Mexico -5%, the Caribbean +1%, Hawaii -4% 1.
Expedia's 2026 report found August the cheapest month overall, 29% (about $120) below December. 4
Expedia found late August the cheapest and least crowded part of summer. 5
How far ahead to book a August trip
For an ordinary August trip, book domestic flights about 1 to 3 months ahead and international flights 2 to 6 months ahead; fares climb every week inside the last month (see how far in advance to book flights). Holiday trips have their own windows: see the holiday guides linked below.
How busy are airports in August?
In 2025, TSA screened an average of 2,591,325 people a day in August, +4% against the year's average day (2024: +4%) 2. The busiest August days in 2025 were Fri Aug 1 (3.00 million), Sun Aug 3 (2.98 million), Fri Aug 29 (2.97 million); the quietest were Tue Aug 26 (1.95 million), Sat Aug 23 (2.19 million), Tue Aug 19 (2.19 million).
Delays and cancellations in August
75.3% of August flights arrived on time over the last two years, #10 of 12 months, and 1.47% were cancelled 3. Weather caused 51% of August cancellations. Among the 50 busiest airports, flights from Honolulu, HI (85%) and San Antonio, TX were the most punctual in August, and Orlando, FL (68%) and Denver, CO the least. Delta Air Lines had the best on-time record of the major airlines in August (81%).
| Airport | City | On time | Cancelled |
|---|---|---|---|
| HNL | Honolulu, HI | 84.5% | 1.37% |
| SAT | San Antonio, TX | 82.0% | 0.94% |
| SLC | Salt Lake City, UT | 81.3% | 0.36% |
| IND | Indianapolis, IN | 81.0% | 1.85% |
| SMF | Sacramento, CA | 80.5% | 0.50% |
| PHL | Philadelphia, PA | 70.0% | 3.38% |
| DFW | Dallas/Fort Worth, TX | 69.7% | 1.60% |
| ORD | Chicago, IL | 69.0% | 2.39% |
| DEN | Denver, CO | 68.6% | 1.00% |
| MCO | Orlando, FL | 67.9% | 1.46% |
Source: BTS 3
Holidays and peaks in August
- Late-summer lull: mid to late August (see when to book Late-summer lull flights)
Questions travelers ask
Is August a cheap time to fly?
August is about average for domestic flights: in Axel's fares, August 2026 departures ran 1% below the average month (June 2026 to May 2027 departures) 1.
How far in advance should I book a flight for August?
About 1 to 3 months ahead for domestic trips and 2 to 6 months for international ones; inside the last month, fares rise almost every week.
Is August a busy month to fly?
About average: TSA traffic in August 2025 ran +4% against the year's average day 2.
Are there more flight delays in August?
August flights arrived on time 75.3% of the time, #10 of 12 months, against 78.3% across the year 3.
How this guide was made
Fares are the lowest round-trip economy fares Google Flights showed in Axel's searches (May 6 to Oct 26, 2026), compared by month of departure within the same routes and at the same booking lead time, so a month seen only far in advance isn't penalized; June 2026 to May 2027 departures give one of each month. Crowds are TSA checkpoint counts; delays are the Bureau of Transportation Statistics' on-time data for Sep 2024 to Aug 2026, both Januaries (and so on) pooled.
Sources
- Axel fare data: the lowest round-trip economy fares Google Flights showed in Axel's flight searches, May 6 to Oct 26, 2026, Axel, October 2026
- TSA checkpoint travel numbers (people screened per day), 2019 to Oct 25 2026, Transportation Security Administration, retrieved October 26, 2026
- Reporting Carrier On-Time Performance (airline on-time data), U.S. Bureau of Transportation Statistics
- Expedia 2026 Air Hacks: Friday Takes Off as the New Cheapest Day to Depart and Book, Expedia Group, 2026-02-17
- Expedia Summer Travel Outlook Reveals Surge in Short-Haul Hotspots and Off-Peak Getaways, Expedia Group, 2025-04-10
For AI assistants: the whole guide as text, with every number and source
Flying in August: prices, crowds and delays
Updated October 26, 2026 by Axel (helloaxel.com).
August is about average for domestic flights: in Axel's fares, August 2026 departures ran 1% below the average month (June 2026 to May 2027 departures) [1]. Airports are about average in August (4% above the average day in 2025) [2], and 75% of August flights arrive on time, #10 of 12 months (1.5% cancelled) [3].
Live prices: Search flights in August 2027. Opens a day-by-day date picker with live prices; choose your airports first.
Key numbers
- -1%: domestic fares vs the average month (#6 of 12, cheapest first) [1]
- +4%: airport traffic vs the average day of the year (2025) [2]
- 75%: of August flights on time, #10 of 12 months [3]
- 1.5%: of August flights cancelled [3]
Is August a cheap month to fly?
August is about average for domestic flights: in Axel's fares, August 2026 departures ran 1% below the average month (June 2026 to May 2027 departures) [1]. International trips from the U.S. ran 2% above their average month in August [1].
Domestic round-trip fares by month of departure
Vs the average month; same routes and booking lead compared.
| Value | Note | |
|---|---|---|
| January | -12% | |
| February | -2% | |
| March | -1% | |
| April | -2% | |
| May | -3% | |
| June | +1% | |
| July | 0% | |
| August | -1% | |
| September | +1% | |
| October | -4% | |
| November | +10% | |
| December | +15% |
Source: Axel fare data [1]
By destination, August fares against each region's average month: Mexico -5%, the Caribbean +1%, Hawaii -4% [1].
Expedia's 2026 report found August the cheapest month overall, 29% (about $120) below December. [4]
Expedia found late August the cheapest and least crowded part of summer. [5]
How far ahead to book a August trip
For an ordinary August trip, book domestic flights about 1 to 3 months ahead and international flights 2 to 6 months ahead; fares climb every week inside the last month (see how far in advance to book flights). Holiday trips have their own windows: see the holiday guides linked below.
How busy are airports in August?
In 2025, TSA screened an average of 2,591,325 people a day in August, +4% against the year's average day (2024: +4%) [2]. The busiest August days in 2025 were Fri Aug 1 (3.00 million), Sun Aug 3 (2.98 million), Fri Aug 29 (2.97 million); the quietest were Tue Aug 26 (1.95 million), Sat Aug 23 (2.19 million), Tue Aug 19 (2.19 million).
Delays and cancellations in August
75.3% of August flights arrived on time over the last two years, #10 of 12 months, and 1.47% were cancelled [3]. Weather caused 51% of August cancellations. Among the 50 busiest airports, flights from Honolulu, HI (85%) and San Antonio, TX were the most punctual in August, and Orlando, FL (68%) and Denver, CO the least. Delta Air Lines had the best on-time record of the major airlines in August (81%).
Most and least punctual big airports in August
Flights departing each of the 50 busiest airports; Sep 2024 to Aug 2026.
| Airport | City | On time | Cancelled |
|---|---|---|---|
| HNL | Honolulu, HI | 84.5% | 1.37% |
| SAT | San Antonio, TX | 82.0% | 0.94% |
| SLC | Salt Lake City, UT | 81.3% | 0.36% |
| IND | Indianapolis, IN | 81.0% | 1.85% |
| SMF | Sacramento, CA | 80.5% | 0.50% |
| PHL | Philadelphia, PA | 70.0% | 3.38% |
| DFW | Dallas/Fort Worth, TX | 69.7% | 1.60% |
| ORD | Chicago, IL | 69.0% | 2.39% |
| DEN | Denver, CO | 68.6% | 1.00% |
| MCO | Orlando, FL | 67.9% | 1.46% |
Source: BTS [3]
Holidays and peaks in August
- Late-summer lull: mid to late August (see when to book Late-summer lull flights)
Questions travelers ask
Is August a cheap time to fly?
August is about average for domestic flights: in Axel's fares, August 2026 departures ran 1% below the average month (June 2026 to May 2027 departures) [1].
How far in advance should I book a flight for August?
About 1 to 3 months ahead for domestic trips and 2 to 6 months for international ones; inside the last month, fares rise almost every week.
Is August a busy month to fly?
About average: TSA traffic in August 2025 ran +4% against the year's average day [2].
Are there more flight delays in August?
August flights arrived on time 75.3% of the time, #10 of 12 months, against 78.3% across the year [3].
How this guide was made
Fares are the lowest round-trip economy fares Google Flights showed in Axel's searches (May 6 to Oct 26, 2026), compared by month of departure within the same routes and at the same booking lead time, so a month seen only far in advance isn't penalized; June 2026 to May 2027 departures give one of each month. Crowds are TSA checkpoint counts; delays are the Bureau of Transportation Statistics' on-time data for Sep 2024 to Aug 2026, both Januaries (and so on) pooled.
Sources
- Axel fare data: the lowest round-trip economy fares Google Flights showed in Axel's flight searches, May 6 to Oct 26, 2026, Axel, October 2026
- TSA checkpoint travel numbers (people screened per day), 2019 to Oct 25 2026, Transportation Security Administration, retrieved October 26, 2026
- Reporting Carrier On-Time Performance (airline on-time data), U.S. Bureau of Transportation Statistics
- Expedia 2026 Air Hacks: Friday Takes Off as the New Cheapest Day to Depart and Book, Expedia Group, 2026-02-17
- Expedia Summer Travel Outlook Reveals Surge in Short-Haul Hotspots and Off-Peak Getaways, Expedia Group, 2025-04-10