WN4251 · SWA4251

SWA4251 over the last 30 days

As of 2026-10-27

SWA4251 is operated by Southwest Airlines on the route San Diego International Airport (SAN/KSAN) → Phoenix Sky Harbor International Airport (PHX/KPHX). It usually takes off around 04:27 or 06:00 UTC (21:27 or 23:00 local time, SAN). It usually lands around 05:18 or 06:51 UTC (22:18 or 23:51 local time, PHX). Most frequent aircraft type: BOEING 737 MAX 8 (B38M).

Days with an observed flight (last 30 days)

10/30

Days of the week with an observed flight

Mon, Thu, Fri

Typical take-off

04:27 UTC · 21:27 local time (SAN) / 06:00 UTC · 23:00 local time (SAN)

Typical landing

05:18 UTC · 22:18 local time (PHX) / 06:51 UTC · 23:51 local time (PHX)

Typical time airborne

48 min

Median departure deviation from the usual time on this route

+9 min

Departures within 15 minutes of the usual time

57 %

Departures measured

162

Our measurement against the usual departure time of the route, from our own observations over the last 28 days; the figures cover all flights of this airline on the route.

Aircraft types on this flight (last 30 days)

• BOEING 737 MAX 8 (B38M) — Number of flights: 5
• BOEING 737-800 (B738) — Number of flights: 5

Aircraft in the last 7 days

• N8871Q · BOEING 737 MAX 8 2026-10-27

Related flights on this route

• All flights KSAN – KPHX