WN1437 MDW → SEA

Southwest Airlines · Chicago, IL to Seattle, WA · 19 flights observed, 2025-07-03 to 2025-08-04 · 1,733 mi

This flight has been on time less than half the time (26%) — expect a real chance of a delay.

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).

ArrivalFlightsShare
Early / on-time526%
16-30 min421%
31-60 min842%
61-120 min211%
2+ hrs00%

Performance by month

MonthFlightsOn-timeAvg delay
2025-071619%+38 min
2025-08367%-2 min

Performance by day of week

DayFlightsOn-time
Mon540%
TueNo data—
WedNo data—
Thu50%
Fri40%
Sat560%
SunNo data—

Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…