US Flight Delays in May 2025
By Sharon Ben-Moshe · US DOT data · last updated 2026-07-01
In May 2025, US airlines operated 605,648 domestic flights and 76% arrived on time, down 4.0 points from April 2025. Hawaiian Airlines led the reporting carriers at 87% on time; PSA Airlines trailed at 69%.
- Flights
- 605,648
- On-time
- 76%
- arrived <15 min late
- Avg delay
- 18 min
- Cancelled
- 1.0%
- vs Apr 2025
- -4.0 pts
- on-time change
Airline on-time rates in May 2025
Reporting carriers with at least 1,000 flights in the month.
| Airline | On-time | vs prior month | Avg delay | Flights |
|---|---|---|---|---|
| Hawaiian Airlines | 87% | +5.2 pts | 8 min | 6,985 |
| SkyWest Airlines | 81% | -1.0 pts | 16 min | 72,962 |
| Envoy Air | 78% | +0.1 pts | 15 min | 25,534 |
| Delta Air Lines | 78% | -4.2 pts | 17 min | 89,931 |
| Southwest Airlines | 77% | -4.2 pts | 15 min | 119,819 |
| Allegiant Air | 76% | -3.0 pts | 21 min | 11,079 |
| Republic Airways | 76% | -8.0 pts | 19 min | 28,067 |
| United Airlines | 75% | -6.2 pts | 20 min | 67,807 |
| Spirit Airlines | 75% | -8.1 pts | 20 min | 17,744 |
| Alaska Airlines | 75% | -6.3 pts | 14 min | 21,751 |
| JetBlue Airways | 74% | -8.4 pts | 20 min | 19,663 |
| American Airlines | 73% | -2.1 pts | 22 min | 86,123 |
| Frontier Airlines | 69% | -4.1 pts | 28 min | 16,036 |
| PSA Airlines | 69% | -5.7 pts | 28 min | 22,147 |
Most delayed large airports
Most reliable large airports
Most delay-prone routes in May 2025
Routes with at least 60 flights in the month.
National figures are flight-weighted averages across all reporting carriers for the month; see the methodology for definitions and limitations.
More reports
Based on 605,648 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.