Washington to Dallas — airline reliability comparison
United Airlines is the most reliable airline on the IAD to DFW route with a 80% on-time rate, compared to American Airlines at 77%. Based on 3,435 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 | 80% | 1.0% | 74m | 3,435 |
| Frontier AirlinesF9 | 78% | 2.0% | 157m | 195 |
| American AirlinesAAWorst | 77% | 2.2% | 106m | 2,808 |
Delays, TSA, weather, gates — we'll let you know if something matters.
Data last updated October 2026. Source: Bureau of Transportation Statistics.