WN1437 MDW → SEA
Southwest Airlines · Chicago, IL to Seattle, WA · 19 flights observed, 2025-07-03 to 2025-08-04 · 1,733 mi
WN1437 covers more than one route in the data window — the stats below are for MDW → SEA, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
26%
Median delay
+33 min
90th percentile
+65 min
Cancellation rate
0%
How often is WN1437 on time?
Across 19 flights on MDW → SEA from 2025-07-03 to 2025-08-04, WN1437 arrived within 15 minutes of schedule 26% of the time. The median arrival delay was +33 min, and the worst 10% of flights arrived +65 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 | 5 | 26% |
| 16-30 min | 4 | 21% |
| 31-60 min | 8 | 42% |
| 61-120 min | 2 | 11% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 16 | 19% | +38 min |
| 2025-08 | 3 | 67% | -2 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 5 | 40% |
| Tue | No data | — |
| Wed | No data | — |
| Thu | 5 | 0% |
| Fri | 4 | 0% |
| Sat | 5 | 60% |
| Sun | No data | — |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…