Flight OddsONT → MDW Southwest Airlines
Southwest Airlines · Ontario, CA to Chicago, IL · 360 flights, 2025-07-01 to 2026-06-30 · aggregated across 14 flight numbers
On-time arrival
90%
Median delay
-7 min
90th percentile
+14 min
Cancellation rate
0%
How on-time is Southwest Airlines from ONT to MDW?
Across every Southwest Airlines flight number on ONT → MDW (360 flights, 2025-07-01 to 2026-06-30), 90% arrived within 15 minutes of schedule. Median arrival delay -7 min; the worst 10% ran +14 min or later. 0% were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 323 | 90% |
| 16-30 min | 15 | 4% |
| 31-60 min | 12 | 3% |
| 61-120 min | 5 | 1% |
| 2+ hrs | 2 | 1% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 31 | 84% | +5 min |
| 2025-08 | 30 | 93% | -4 min |
| 2025-09 | 30 | 97% | -6 min |
| 2025-10 | 31 | 100% | -10 min |
| 2025-11 | 29 | 90% | +4 min |
| 2025-12 | 31 | 87% | +2 min |
| 2026-01 | 27 | 89% | -4 min |
| 2026-02 | 27 | 89% | -4 min |
| 2026-03 | 31 | 94% | -4 min |
| 2026-04 | 29 | 86% | -10 min |
| 2026-05 | 31 | 97% | -8 min |
| 2026-06 | 30 | 80% | +1 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 52 | 85% |
| Tue | 52 | 92% |
| Wed | 52 | 88% |
| Thu | 52 | 88% |
| Fri | 51 | 92% |
| Sat | 46 | 89% |
| Sun | 52 | 98% |
WN flight numbers on ONT → MDW
Related
Based on US DOT Bureau of Transportation Statistics on-time data. Loading the full breakdown…