United Airlines is the most reliable airline on the AUS to IAD route with a 88% on-time rate, compared to at 86%. Based on 3,462 flights tracked.
Source: Bureau of Transportation Statistics. Updated October 2026.Best Airline: AUS to IAD
Austin to Washington — airline reliability comparison
On-Time Rate by Airline
United Airlines88%
86%
AUS to IAD Airline Comparison
| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| United AirlinesUABest | 88% | 1.1% | 70m | 3,462 |
| MQWorst | 86% | 0.4% | 40m | 208 |
Route Overview
88%
Overall On-Time
78m
Avg Delay
1%
Cancel Rate
3,908
Total Flights
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Data last updated October 2026. Source: Bureau of Transportation Statistics.