Flight Check

Best Airline: DEN to BWI

Denver to Baltimore — airline reliability comparison

United Airlines is the most reliable airline on the DEN to BWI route with a 80% on-time rate, compared to Frontier Airlines at 74%. Based on 3,261 flights tracked.

This route involves weather-prone airports and high-congestion airports, which can affect reliability regardless of airline.

Source: Bureau of Transportation Statistics. Updated October 2026.

On-Time Rate by Airline

United Airlines80%
Southwest Airlines74%
Frontier Airlines74%

DEN to BWI Airline Comparison

AirlineOn-Time %Cancel %Avg DelayFlights
United AirlinesUABest80%1.0%55m3,261
Southwest AirlinesWN74%1.3%51m6,947
Frontier AirlinesF9Worst74%0.6%58m392

Route Overview

76%
Overall On-Time
52m
Avg Delay
1.1%
Cancel Rate
10,640
Total Flights
DEN to BWI Route DetailsReturn: BWI to DEN
DEN AirportBWI Airport

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Data last updated October 2026. Source: Bureau of Transportation Statistics.