US Flight Delays in April 2025
By Sharon Ben-Moshe · US DOT data · last updated 2026-07-01
In April 2025, US airlines operated 583,950 domestic flights and 80% arrived on time, essentially flat versus March 2025. Republic Airways led the reporting carriers at 84% on time; Frontier Airlines trailed at 73%.
- Flights
- 583,950
- On-time
- 80%
- arrived <15 min late
- Avg delay
- 15 min
- Cancelled
- 0.8%
- vs Mar 2025
- -0.0 pts
- on-time change
Airline on-time rates in April 2025
Reporting carriers with at least 1,000 flights in the month.
| Airline | On-time | vs prior month | Avg delay | Flights |
|---|---|---|---|---|
| Republic Airways | 84% | -0.5 pts | 10 min | 28,384 |
| Spirit Airlines | 83% | +1.9 pts | 13 min | 18,303 |
| Hawaiian Airlines | 82% | -0.6 pts | 9 min | 6,559 |
| JetBlue Airways | 82% | +5.4 pts | 12 min | 20,002 |
| SkyWest Airlines | 82% | +2.3 pts | 15 min | 69,319 |
| Delta Air Lines | 82% | +0.6 pts | 13 min | 84,188 |
| United Airlines | 82% | -1.0 pts | 14 min | 64,256 |
| Alaska Airlines | 81% | +0.1 pts | 10 min | 19,025 |
| Southwest Airlines | 81% | -1.3 pts | 12 min | 117,622 |
| Allegiant Air | 79% | +1.5 pts | 17 min | 10,926 |
| Envoy Air | 78% | -1.1 pts | 15 min | 24,343 |
| American Airlines | 75% | -1.3 pts | 20 min | 82,261 |
| PSA Airlines | 74% | -0.2 pts | 22 min | 21,311 |
| Frontier Airlines | 73% | -1.3 pts | 23 min | 17,451 |
Most delayed large airports
Most reliable large airports
Most delay-prone routes in April 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.
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Based on 583,950 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.