US flight punctuality: May 2026
In May 2026, 78.6% of 611,735 US domestic flights arrived within 15 minutes of schedule, down 1.2 points on the month before. 0.9% were cancelled, and flights arrived 6 minutes late on average. Republic Airways was the most punctual airline at 84.4%, and Southwest Airlines the least at 72.4%. JetBlue Airways improved the most, up 5.5 points.
Airlines ranked by on-time arrivals
| Airline | On time | Change | Cancelled | Average delay | Flights | |
|---|---|---|---|---|---|---|
| 1 | Republic Airways YX | 84.4% | +2.6 | 1.4% | -1 min | 32,203 |
| 2 | Alaska Airlines AS | 83.2% | -1 | 0.7% | -1 min | 29,184 |
| 3 | Envoy Air MQ | 83.1% | +1.8 | 1.8% | +2 min | 28,806 |
| 4 | Delta Air Lines DL | 82.2% | -2.7 | 1.2% | +3 min | 91,955 |
| 5 | JetBlue Airways B6 | 81.4% | +5.5 | 0.2% | +2 min | 19,806 |
| 6 | SkyWest Airlines OO | 80.1% | +0.3 | 0.9% | +8 min | 75,994 |
| 7 | United Airlines UA | 80% | -2.5 | 0.4% | +4 min | 74,200 |
| 8 | PSA Airlines OH | 76.7% | -0.2 | 1.9% | +9 min | 20,854 |
| 9 | Frontier Airlines F9 | 76.7% | +2.4 | 0.5% | +8 min | 18,423 |
| 10 | American Airlines AA | 76.5% | -1.2 | 1.5% | +11 min | 88,740 |
| 11 | Allegiant Air G4 | 72.9% | -2.9 | 0.2% | +17 min | 10,570 |
| 12 | Southwest Airlines WN | 72.4% | -5.3 | 0.4% | +10 min | 120,646 |
Airlines with at least 1,000 flights in the month. Change is in percentage points against the month before.
Most punctual busy routes
- Anchorage to Seattle585 flights93.8%
- Seattle to Santa Ana353 flights92.9%
- Spokane to Seattle415 flights91.5%
- Los Angeles to Portland379 flights91.3%
- Los Angeles to Salt Lake City328 flights91.1%
- Santa Ana to Seattle353 flights90.9%
- Los Angeles to Newark339 flights90.2%
- Portland to Los Angeles377 flights89.6%
- San Jose to Los Angeles382 flights89%
- Newark to Orlando484 flights88.4%
Least punctual busy routes
- Santa Ana to San Francisco413 flights39.4%
- Las Vegas to San Francisco534 flights40.4%
- Seattle to San Francisco591 flights40.7%
- San Diego to San Francisco540 flights42.6%
- Los Angeles to San Francisco1,028 flights44.1%
- Phoenix to San Francisco418 flights45.1%
- Salt Lake City to San Francisco307 flights46.1%
- Dallas-Fort Worth to San Francisco401 flights48.5%
- Denver to San Francisco483 flights53.5%
- San Francisco to San Diego529 flights55.9%
Most punctual airports
- Kahului (OGG)2,178 departures86.7%
- Newark Liberty (EWR)10,300 departures86.4%
- Salt Lake City (SLC)10,146 departures85.3%
- San Juan (SJU)2,875 departures84.7%
- Pittsburgh (PIT)3,778 departures84.6%
- Cleveland Hopkins (CLE)3,745 departures84.4%
- Washington Dulles (IAD)5,474 departures84.1%
- Portland (PDX)5,535 departures83.9%
- Louisville (SDF)2,304 departures83.6%
- Columbus (CMH)3,860 departures83.4%
Least punctual airports
- Dallas Love Field (DAL)6,141 departures64.3%
- San Francisco (SFO)13,114 departures70.1%
- Nashville (BNA)9,814 departures70.6%
- Houston (HOU)4,533 departures71.9%
- Dallas-Fort Worth (DFW)27,419 departures72.7%
- New Orleans (MSY)4,194 departures73.5%
- Chicago Midway (MDW)6,269 departures74%
- Las Vegas (LAS)14,585 departures74.1%
- Washington (DCA)12,158 departures74.8%
- Fort Lauderdale Hollywood (FLL)6,437 departures74.9%
Most punctual flights
- OO3755Sacramento to Los Angeles100%
- OO3822Los Angeles to Sacramento100%
- DL2572San Diego to Seattle100%
- DL2232Atlanta to Lexington KY100%
- DL1522Atlanta to Columbus100%
- DL2999Milwaukee to Atlanta100%
- DL1363Pittsburgh to Atlanta100%
- DL2471Atlanta to Kansas City100%
- AS73Juneau to Anchorage100%
- OO4229Hibbing to Minneapolis100%
Least punctual flights
- WN4104San Francisco to San Diego3.2%
- WN2066San Francisco to San Diego6.5%
- WN4219San Francisco to St. Louis7.7%
- WN2546Burbank to San Francisco9.1%
- OO4683Tucson to San Francisco9.7%
- WN2010San Francisco to Phoenix9.7%
- WN1249Atlanta to Denver11.4%
- WN3677San Francisco to Denver11.8%
- OO3463San Diego to San Francisco12%
- AS725Seattle to San Francisco12.9%
Routes with at least 300 flights, airports with at least 2,000 departures and flight numbers with at least 25 flights in May 2026.
About this report
Figures cover every domestic flight by a large US airline in May 2026, from the US Bureau of Transportation Statistics (public domain). On time means arriving within 15 minutes of schedule; see how we measure punctuality. Look up any flight, route or airport in flight stats, and embed a live badge on your own site from any of those pages.
You are welcome to quote this report with a link to this page.