Flight OddsWN203 MDW → ONT
Southwest Airlines · Chicago, IL to Ontario, CA · 16 flights observed, 2025-08-09 to 2025-09-28 · 1,706 mi
WN203 covers more than one route in the data window — the stats below are for MDW → ONT, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
81%
Median delay
+2 min
90th percentile
+40 min
Cancellation rate
0%
How often is WN203 on time?
Across 16 flights on MDW → ONT from 2025-08-09 to 2025-09-28, WN203 arrived within 15 minutes of schedule 81% of the time. The median arrival delay was +2 min, and the worst 10% of flights arrived +40 min or later. 0% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 13 | 81% |
| 16-30 min | 1 | 6% |
| 31-60 min | 1 | 6% |
| 61-120 min | 0 | 0% |
| 2+ hrs | 1 | 6% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-08 | 8 | 75% | +18 min |
| 2025-09 | 8 | 88% | +2 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | No data | — |
| Tue | No data | — |
| Wed | No data | — |
| Thu | No data | — |
| Fri | No data | — |
| Sat | 8 | 75% |
| Sun | 8 | 88% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…