Flight OddsGRR → MDW Southwest Airlines
Southwest Airlines · Grand Rapids, MI to Chicago, IL · 931 flights, 2025-07-01 to 2026-06-30 · aggregated across 43 flight numbers
On-time arrival
79%
Median delay
-2 min
90th percentile
+30 min
Cancellation rate
0%
How on-time is Southwest Airlines from GRR to MDW?
Across every Southwest Airlines flight number on GRR → MDW (931 flights, 2025-07-01 to 2026-06-30), 79% arrived within 15 minutes of schedule. Median arrival delay -2 min; the worst 10% ran +30 min or later. 0% were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 724 | 79% |
| 16-30 min | 107 | 12% |
| 31-60 min | 61 | 7% |
| 61-120 min | 12 | 1% |
| 2+ hrs | 18 | 2% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 88 | 74% | +11 min |
| 2025-08 | 87 | 75% | +12 min |
| 2025-09 | 86 | 70% | +8 min |
| 2025-10 | 88 | 88% | -3 min |
| 2025-11 | 57 | 82% | +3 min |
| 2025-12 | 59 | 69% | +13 min |
| 2026-01 | 62 | 81% | +7 min |
| 2026-02 | 54 | 81% | -1 min |
| 2026-03 | 82 | 80% | +7 min |
| 2026-04 | 86 | 84% | +0 min |
| 2026-05 | 87 | 85% | +1 min |
| 2026-06 | 86 | 73% | +2 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 134 | 78% |
| Tue | 141 | 79% |
| Wed | 138 | 78% |
| Thu | 138 | 81% |
| Fri | 136 | 79% |
| Sat | 99 | 80% |
| Sun | 136 | 75% |
WN flight numbers on GRR → MDW
Related
Based on US DOT Bureau of Transportation Statistics on-time data. Loading the full breakdown…