Southwest Airlines is the most reliable airline on the MDW to BWI route with a 80% on-time rate, compared to Frontier Airlines at 71%. Based on 6,618 flights tracked.
Source: Bureau of Transportation Statistics. Updated October 2026.Best Airline: MDW to BWI
Chicago to Baltimore — airline reliability comparison
On-Time Rate by Airline
Southwest Airlines80%
Frontier Airlines71%
MDW to BWI Airline Comparison
| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| Southwest AirlinesWNBest | 80% | 2.0% | 55m | 6,618 |
| Frontier AirlinesF9Worst | 71% | 0.7% | 70m | 289 |
Route Overview
79%
Overall On-Time
56m
Avg Delay
1.9%
Cancel Rate
6,917
Total Flights
Flying out of MDW? We'll brief you.
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Data last updated October 2026. Source: Bureau of Transportation Statistics.