Republic Airways is the most reliable airline on the IAD to BNA route with a 90% on-time rate, compared to Allegiant Air at 67%. Based on 38 flights tracked.
Source: Bureau of Transportation Statistics. Updated October 2026.Best Airline: IAD to BNA
Washington to Nashville — airline reliability comparison
On-Time Rate by Airline
Republic Airways90%
United Airlines83%
Allegiant Air67%
IAD to BNA Airline Comparison
| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| Republic AirwaysYXBest | 90% | 0.0% | 47m | 38 |
| United AirlinesUA | 83% | 0.7% | 80m | 3,272 |
| Allegiant AirG4Worst | 67% | 0.6% | 125m | 210 |
Route Overview
82%
Overall On-Time
84m
Avg Delay
0.5%
Cancel Rate
3,638
Total Flights
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Data last updated October 2026. Source: Bureau of Transportation Statistics.