Flight OddsMDW → ONT Southwest Airlines
Southwest Airlines · Chicago, IL to Ontario, CA · 360 flights, 2025-07-01 to 2026-06-30 · aggregated across 16 flight numbers
On-time arrival
71%
Median delay
+3 min
90th percentile
+51 min
Cancellation rate
1%
How on-time is Southwest Airlines from MDW to ONT?
Across every Southwest Airlines flight number on MDW → ONT (360 flights, 2025-07-01 to 2026-06-30), 71% arrived within 15 minutes of schedule. Median arrival delay +3 min; the worst 10% ran +51 min or later. 1% were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 253 | 71% |
| 16-30 min | 37 | 10% |
| 31-60 min | 36 | 10% |
| 61-120 min | 20 | 6% |
| 2+ hrs | 10 | 3% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 31 | 61% | +43 min |
| 2025-08 | 30 | 70% | +23 min |
| 2025-09 | 30 | 77% | +5 min |
| 2025-10 | 31 | 77% | +15 min |
| 2025-11 | 28 | 96% | -4 min |
| 2025-12 | 31 | 65% | +12 min |
| 2026-01 | 27 | 78% | 0 min |
| 2026-02 | 27 | 89% | -3 min |
| 2026-03 | 30 | 67% | +12 min |
| 2026-04 | 30 | 73% | +17 min |
| 2026-05 | 31 | 55% | +17 min |
| 2026-06 | 30 | 50% | +24 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 50 | 72% |
| Tue | 53 | 74% |
| Wed | 52 | 77% |
| Thu | 52 | 73% |
| Fri | 52 | 71% |
| Sat | 46 | 72% |
| Sun | 51 | 59% |
WN flight numbers on MDW → ONT
Related
Based on US DOT Bureau of Transportation Statistics on-time data. Loading the full breakdown…