United Airlines is the most reliable airline on the IAD to CMH route with a 87% on-time rate, compared to Republic Airways at 85%. Based on 477 flights tracked.
Source: Bureau of Transportation Statistics. Updated October 2026.Best Airline: IAD to CMH
Washington to Columbus — airline reliability comparison
On-Time Rate by Airline
United Airlines87%
Republic Airways85%
IAD to CMH Airline Comparison
| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| United AirlinesUABest | 87% | 0.8% | 49m | 477 |
| Republic AirwaysYXWorst | 85% | 1.1% | 75m | 2,513 |
Route Overview
85%
Overall On-Time
74m
Avg Delay
1.1%
Cancel Rate
2,994
Total Flights
Flying out of IAD? We'll brief you.
Delays, TSA, weather, gates — we'll let you know if something matters.
Data last updated October 2026. Source: Bureau of Transportation Statistics.