WN257 LAS → SEA

Southwest Airlines · Las Vegas, NV to Seattle, WA · 41 flights observed, 2025-11-02 to 2026-01-05 · 867 mi

This flight's reliability varies a lot by day of week — 100% on-time on Thursdays vs. 60% on Tuesdays.

WN257 covers more than one route in the data window — the stats below are for LAS → SEA, the one it has flown most recently. The others are linked under “Other routes”.

On-time arrival
73%
Median delay
-2 min
90th percentile
+43 min
Cancellation rate
2%

How often is WN257 on time?

Across 41 flights on LAS → SEA from 2025-11-02 to 2026-01-05, WN257 arrived within 15 minutes of schedule 73% of the time. The median arrival delay was -2 min, and the worst 10% of flights arrived +43 min or later. 2% of flights were cancelled.

Delay distribution

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

ArrivalFlightsShare
Early / on-time2973%
16-30 min615%
31-60 min410%
61-120 min13%
2+ hrs00%

Performance by month

MonthFlightsOn-timeAvg delay
2025-112075%+1 min
2025-121867%+6 min
2026-012100%+1 min

Performance by day of week

DayFlightsOn-time
Mon771%
Tue560%
Wed863%
Thu8100%
Fri667%
SatNo data—
Sun667%

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