United Airlines is the most reliable airline on the IAD to MCO route with a 79% on-time rate, compared to Frontier Airlines at 69%. Based on 6,167 flights tracked.
Source: Bureau of Transportation Statistics. Updated October 2026.Best Airline: IAD to MCO
Washington to Orlando — airline reliability comparison
On-Time Rate by Airline
United Airlines79%
Frontier Airlines69%
IAD to MCO Airline Comparison
| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| United AirlinesUABest | 79% | 1.1% | 70m | 6,167 |
| Frontier AirlinesF9Worst | 69% | 2.2% | 92m | 504 |
Route Overview
79%
Overall On-Time
72m
Avg Delay
1.2%
Cancel Rate
6,671
Total Flights
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Data last updated October 2026. Source: Bureau of Transportation Statistics.