San Antonio to Chicago — airline reliability comparison
United Airlines is the most reliable airline on the SAT to ORD route with a 87% on-time rate, compared to SkyWest Airlines at 72%. Based on 2,729 flights tracked.
This route involves weather-prone airports and 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 |
|---|---|---|---|---|
| United AirlinesUABest | 87% | 1.5% | 88m | 2,729 |
| American AirlinesAA | 84% | 1.5% | 101m | 2,254 |
| MQ | 80% | 2.6% | 68m | 434 |
| Republic AirwaysYX | 78% | 2.4% | 55m | 98 |
| SkyWest AirlinesOOWorst | 72% | 1.8% | 94m | 250 |
Delays, TSA, weather, gates — we'll let you know if something matters.
Data last updated October 2026. Source: Bureau of Transportation Statistics.