Republic Airways is the most reliable airline on the IAD to JAX route with a 82% on-time rate, compared to Allegiant Air at 22%. Based on 290 flights tracked.
Source: Bureau of Transportation Statistics. Updated October 2026.Best Airline: IAD to JAX
Washington to Jacksonville — airline reliability comparison
On-Time Rate by Airline
Republic Airways82%
United Airlines81%
Allegiant Air22%
IAD to JAX Airline Comparison
| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| Republic AirwaysYXBest | 82% | 2.3% | 39m | 290 |
| United AirlinesUA | 81% | 1.0% | 75m | 2,120 |
| Allegiant AirG4Worst | 22% | 10.0% | 124m | 10 |
Route Overview
78%
Overall On-Time
78m
Avg Delay
1.1%
Cancel Rate
2,708
Total Flights
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Data last updated October 2026. Source: Bureau of Transportation Statistics.