US flight delays report: April 2026
US airlines reported 597,919 scheduled domestic flights in April 2026. 79.8% arrived on time (up 4.1 pts from the previous month), and 0.9% were cancelled. Delta Air Lines was the most punctual airline (85.0%), and Spirit Airlines the least (65.4%).
On-time arrivals
80%
arrived < 15 min late
Cancelled
0.9%
5,402 flights
Avg arrival delay
14 min
67 min when late
1 hr+ late
6.4%
597,919 flights tracked
Airline rankings, April 2026
| # | Airline | On time | Cancelled | Avg delay | Flights |
|---|---|---|---|---|---|
| 1 | Delta Air Lines | 85.0% | 0.8% | 10 min | 87,115 |
| 2 | Alaska Airlines | 84.2% | 0.4% | 9 min | 27,222 |
| 3 | United Airlines | 82.6% | 0.5% | 13 min | 69,451 |
| 4 | Republic Airways | 81.8% | 1.1% | 13 min | 31,013 |
| 5 | Envoy Air | 81.3% | 2.1% | 14 min | 27,127 |
| 6 | SkyWest Airlines | 79.8% | 1.8% | 18 min | 73,115 |
| 7 | American Airlines | 77.7% | 0.9% | 18 min | 84,538 |
| 8 | Southwest Airlines | 77.6% | 0.3% | 12 min | 117,814 |
| 9 | PSA Airlines | 76.9% | 1.3% | 22 min | 20,547 |
| 10 | JetBlue | 75.9% | 0.1% | 16 min | 20,650 |
| 11 | Allegiant Air | 75.8% | 0.1% | 19 min | 10,318 |
| 12 | Frontier Airlines | 74.2% | 1.3% | 21 min | 18,540 |
| 13 | Spirit Airlines | 65.4% | 3.4% | 25 min | 10,469 |
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 aircraft40%
- Airline (crew, maintenance, cleaning, fueling)33%
- Air traffic control & airport congestion21%
- Extreme weather5%
- Security0%
Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, April 2026. Methodology.