Republic Airways is the most reliable airline on the IAD to CVG route with a 88% on-time rate, compared to United Airlines at 78%. Based on 1,160 flights tracked.
Source: Bureau of Transportation Statistics. Updated October 2026.Best Airline: IAD to CVG
Washington to Cincinnati — airline reliability comparison
On-Time Rate by Airline
Republic Airways88%
United Airlines78%
IAD to CVG Airline Comparison
| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| Republic AirwaysYXBest | 88% | 1.3% | 60m | 1,160 |
| United AirlinesUAWorst | 78% | 0.0% | 82m | 18 |
Route Overview
87%
Overall On-Time
65m
Avg Delay
1.5%
Cancel Rate
1,180
Total Flights
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Data last updated October 2026. Source: Bureau of Transportation Statistics.