US Flight Delays in June 2026
By Sharon Ben-Moshe · US DOT data · last updated 2026-09-28
In June 2026, US airlines operated 607,577 domestic flights and 74% arrived on time, down 4.4 points from May 2026. Delta Air Lines led the reporting carriers at 82% on time; Southwest Airlines trailed at 66%.
- Flights
- 607,577
- On-time
- 74%
- arrived <15 min late
- Avg delay
- 20 min
- Cancelled
- 1.6%
- vs May 2026
- -4.4 pts
- on-time change
Airline on-time rates in June 2026
Reporting carriers with at least 1,000 flights in the month.
| Airline | On-time | vs prior month | Avg delay | Flights |
|---|---|---|---|---|
| Delta Air Lines | 82% | 0.0 pts | 14 min | 90,247 |
| Republic Airways | 81% | -3.1 pts | 16 min | 30,929 |
| Alaska Airlines | 81% | -2.5 pts | 11 min | 29,891 |
| Envoy Air | 78% | -4.5 pts | 17 min | 29,207 |
| SkyWest Airlines | 77% | -2.6 pts | 19 min | 73,673 |
| JetBlue Airways | 75% | -6.5 pts | 21 min | 20,804 |
| United Airlines | 74% | -5.4 pts | 20 min | 72,791 |
| PSA Airlines | 72% | -4.3 pts | 29 min | 20,871 |
| Frontier Airlines | 71% | -5.4 pts | 25 min | 19,104 |
| American Airlines | 70% | -6.7 pts | 29 min | 86,464 |
| Allegiant Air | 69% | -4.2 pts | 32 min | 12,663 |
| Southwest Airlines | 66% | -6.5 pts | 20 min | 120,933 |
Most delayed large airports
Most reliable large airports
Most delay-prone routes in June 2026
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 607,577 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.