San Francisco to Miami — airline reliability comparison
United Airlines is the most reliable airline on the SFO to MIA route with a 82% on-time rate, compared to American Airlines at 80%. Based on 1,897 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 |
|---|---|---|---|---|
| United AirlinesUABest | 82% | 1.0% | 48m | 1,897 |
| American AirlinesAAWorst | 80% | 0.5% | 94m | 3,737 |
Delays, TSA, weather, gates — we'll let you know if something matters.
Data last updated October 2026. Source: Bureau of Transportation Statistics.