US flight delays report: August 2025
US airlines reported 602,378 scheduled domestic flights in August 2025. 77.4% arrived on time (up 6.3 pts from the previous month), and 1.1% were cancelled. Hawaiian Airlines was the most punctual airline (85.7%), and American Airlines the least (69.5%).
On-time arrivals
77%
arrived < 15 min late
Cancelled
1.1%
6,483 flights
Avg arrival delay
18 min
73 min when late
1 hr+ late
8.2%
602,378 flights tracked
Airline rankings, August 2025
| # | Airline | On time | Cancelled | Avg delay | Flights |
|---|---|---|---|---|---|
| 1 | Hawaiian Airlines | 85.7% | 0.2% | 9 min | 6,946 |
| 2 | Republic Airways | 83.4% | 1.7% | 13 min | 29,958 |
| 3 | Delta Air Lines | 83.0% | 0.8% | 13 min | 90,313 |
| 4 | SkyWest Airlines | 79.2% | 1.0% | 18 min | 74,150 |
| 5 | Envoy Air | 78.8% | 1.5% | 15 min | 26,564 |
| 6 | Southwest Airlines | 78.6% | 0.4% | 13 min | 114,519 |
| 7 | Spirit Airlines | 77.6% | 0.5% | 17 min | 17,155 |
| 8 | United Airlines | 76.5% | 1.1% | 18 min | 68,946 |
| 9 | PSA Airlines | 76.0% | 2.6% | 23 min | 20,427 |
| 10 | Allegiant Air | 76.0% | 0.1% | 25 min | 10,499 |
| 11 | JetBlue | 75.3% | 0.6% | 20 min | 20,204 |
| 12 | Alaska Airlines | 72.8% | 1.1% | 15 min | 22,976 |
| 13 | Frontier Airlines | 70.5% | 1.6% | 25 min | 16,697 |
| 14 | American Airlines | 69.5% | 1.9% | 28 min | 83,024 |
Most delayed major airports
Airports with 100+ departures a day.
Most on-time major airports
Most delayed busy routes
Routes with 5+ flights a day.
Most cancelled busy routes
What caused delays this month
- Late-arriving aircraft41%
- Airline (crew, maintenance, cleaning, fueling)33%
- Air traffic control & airport congestion19%
- Extreme weather7%
- Security0%
Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, August 2025. Methodology.