Southwest Airlines is the most reliable airline on the MDW to PHX route with a 77% on-time rate, compared to Frontier Airlines at 77%. Based on 9,714 flights tracked.
Source: Bureau of Transportation Statistics. Updated October 2026.Best Airline: MDW to PHX
Chicago to Phoenix — airline reliability comparison
On-Time Rate by Airline
Southwest Airlines77%
Frontier Airlines77%
MDW to PHX Airline Comparison
| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| Southwest AirlinesWNBest | 77% | 1.3% | 51m | 9,714 |
| Frontier AirlinesF9Worst | 77% | 1.8% | 80m | 886 |
Route Overview
77%
Overall On-Time
54m
Avg Delay
1.3%
Cancel Rate
10,664
Total Flights
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Data last updated October 2026. Source: Bureau of Transportation Statistics.