San Francisco to Phoenix — airline reliability comparison
SkyWest Airlines is the most reliable airline on the SFO to PHX route with a 88% on-time rate, compared to Frontier Airlines at 63%. Based on 1,969 flights tracked.
This route involves high-congestion airports, which can affect reliability regardless of airline.
Source: Bureau of Transportation Statistics. Updated October 2026.| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| SkyWest AirlinesOOBest | 88% | 0.4% | 54m | 1,969 |
| United AirlinesUA | 82% | 0.5% | 60m | 4,702 |
| American AirlinesAA | 78% | 0.5% | 109m | 4,566 |
| Alaska AirlinesAS | 75% | 5.3% | 38m | 166 |
| MQ | 75% | 0.0% | 53m | 37 |
| Southwest AirlinesWN | 71% | 0.4% | 55m | 3,861 |
| Frontier AirlinesF9Worst | 63% | 2.3% | 86m | 1,339 |
Delays, TSA, weather, gates — we'll let you know if something matters.
Data last updated October 2026. Source: Bureau of Transportation Statistics.