Southwest Airlines is the most reliable airline on the GRR to MDW route with a 83% on-time rate. Based on 3,426 flights tracked.
Source: Bureau of Transportation Statistics. Updated October 2026.Best Airline: GRR to MDW
Grand Rapids to Chicago — airline reliability comparison
On-Time Rate by Airline
Southwest Airlines83%
GRR to MDW Airline Comparison
| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| Southwest AirlinesWNBest | 83% | 0.6% | 55m | 3,426 |
Route Overview
83%
Overall On-Time
54m
Avg Delay
0.6%
Cancel Rate
3,426
Total Flights
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Data last updated October 2026. Source: Bureau of Transportation Statistics.