United Airlines is the most reliable airline on the DCA to IAH route with a 83% on-time rate, compared to PSA Airlines at 74%. Based on 7,835 flights tracked.
Source: Bureau of Transportation Statistics. Updated October 2026.Best Airline: DCA to IAH
Washington to Houston — airline reliability comparison
On-Time Rate by Airline
United Airlines83%
SkyWest Airlines80%
Republic Airways77%
PSA Airlines74%
DCA to IAH Airline Comparison
| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| United AirlinesUABest | 83% | 1.5% | 86m | 7,835 |
| SkyWest AirlinesOO | 80% | 1.5% | 80m | 139 |
| Republic AirwaysYX | 77% | 4.6% | 56m | 511 |
| PSA AirlinesOHWorst | 74% | 7.2% | 64m | 357 |
Route Overview
82%
Overall On-Time
84m
Avg Delay
1.9%
Cancel Rate
8,857
Total Flights
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Data last updated October 2026. Source: Bureau of Transportation Statistics.