WN1129 PHX → SEA

Southwest Airlines · Phoenix, AZ to Seattle, WA · 34 flights observed, 2026-04-07 to 2026-06-03 · 1,107 mi

This flight's reliability varies a lot by day of week — 89% on-time on Tuesdays vs. 50% on Sundays.

WN1129 covers more than one route in the data window — the stats below are for PHX → SEA, the one it has flown most recently. The others are linked under “Other routes”.

On-time arrival
74%
Median delay
+3 min
90th percentile
+22 min
Cancellation rate
0%

How often is WN1129 on time?

Across 34 flights on PHX → SEA from 2026-04-07 to 2026-06-03, WN1129 arrived within 15 minutes of schedule 74% of the time. The median arrival delay was +3 min, and the worst 10% of flights arrived +22 min or later. 0% of flights were cancelled.

Delay distribution

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

ArrivalFlightsShare
Early / on-time2574%
16-30 min721%
31-60 min13%
61-120 min13%
2+ hrs00%

Performance by month

MonthFlightsOn-timeAvg delay
2026-041471%+3 min
2026-051878%+4 min
2026-06250%+49 min

Performance by day of week

DayFlightsOn-time
MonNo data—
Tue989%
Wed989%
ThuNo data—
FriNo data—
Sat863%
Sun850%

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