Frontier Airlines is the most reliable airline on the MIA to MDW route with a 76% on-time rate, compared to Southwest Airlines at 73%. Based on 658 flights tracked.
Source: Bureau of Transportation Statistics. Updated October 2026.Best Airline: MIA to MDW
Miami to Chicago — airline reliability comparison
On-Time Rate by Airline
Frontier Airlines76%
Southwest Airlines73%
MIA to MDW Airline Comparison
| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| Frontier AirlinesF9Best | 76% | 2.9% | 81m | 658 |
| Southwest AirlinesWNWorst | 73% | 1.2% | 71m | 2,135 |
Route Overview
75%
Overall On-Time
72m
Avg Delay
1.7%
Cancel Rate
2,838
Total Flights
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Data last updated October 2026. Source: Bureau of Transportation Statistics.