Republic Airways is the most reliable airline on the PIT to IAD route with a 91% on-time rate, compared to United Airlines at 88%. Based on 2,702 flights tracked.
Source: Bureau of Transportation Statistics. Updated October 2026.Best Airline: PIT to IAD
Pittsburgh to Washington — airline reliability comparison
On-Time Rate by Airline
Republic Airways91%
United Airlines88%
PIT to IAD Airline Comparison
| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| Republic AirwaysYXBest | 91% | 0.8% | 50m | 2,702 |
| United AirlinesUAWorst | 88% | 1.2% | 97m | 592 |
Route Overview
89%
Overall On-Time
61m
Avg Delay
0.9%
Cancel Rate
3,306
Total Flights
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Data last updated October 2026. Source: Bureau of Transportation Statistics.