WN2120 SEA → MDW

Southwest Airlines · Seattle, WA to Chicago, IL · 13 flights observed, 2025-11-25 to 2026-01-04 · 1,733 mi

This flight has a strong track record — on time 92% of the time, with a low cancellation rate.

WN2120 covers more than one route in the data window — the stats below are for SEA → MDW, the one it has flown most recently. The others are linked under “Other routes”.

On-time arrival
92%
Median delay
-9 min
90th percentile
+1 min
Cancellation rate
0%

How often is WN2120 on time?

Across 13 flights on SEA → MDW from 2025-11-25 to 2026-01-04, WN2120 arrived within 15 minutes of schedule 92% of the time. The median arrival delay was -9 min, and the worst 10% of flights arrived +1 min or later. 0% of flights were cancelled.

Delay distribution

Arrival delay for completed flights (excludes cancellations and diversions).

ArrivalFlightsShare
Early / on-time1292%
16-30 min00%
31-60 min00%
61-120 min00%
2+ hrs18%

Performance by month

MonthFlightsOn-timeAvg delay
2025-112100%-15 min
2025-12989%+4 min
2026-012100%-9 min

Performance by day of week

DayFlightsOn-time
Mon3100%
Tue3100%
Wed1100%
ThuNo data—
Fri3100%
SatNo data—
Sun367%

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