Southwest Airlines is the most reliable airline on the MDW to DCA route with a 77% on-time rate. Based on 7,549 flights tracked.
Source: Bureau of Transportation Statistics. Updated October 2026.Best Airline: MDW to DCA
Chicago to Washington — airline reliability comparison
On-Time Rate by Airline
Southwest Airlines77%
MDW to DCA Airline Comparison
| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| Southwest AirlinesWNBest | 77% | 1.8% | 55m | 7,549 |
Route Overview
76%
Overall On-Time
55m
Avg Delay
1.8%
Cancel Rate
7,549
Total Flights
Flying out of MDW? We'll brief you.
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Data last updated October 2026. Source: Bureau of Transportation Statistics.