Schedule: a typical Tuesday (the flights of Jul 28, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.

SOUTHWEST · FLIGHT WN 4237 SCHEDULED · TYPICAL SCHEDULE

Tuesday, September 29 Today

WN 4237 · SFO → PHX

departs 11:30 AM PT · arrives 1:40 PM MT

Forecast issued Tue 10:00 PM ET · 8h after departure

WN 4237 isn’t flying SFO → PHX today

This listing came from a typical schedule. According to the FAA, WN 4237 flies these legs today:

LAS → SAN · 1:31 PM · scheduled
LAS → SAN · 1:43 PM · landed