Schedule: a typical Thursday (the flights of Jul 30, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.

SOUTHWEST · FLIGHT WN 431 SCHEDULED · TYPICAL SCHEDULE

Thursday, October 1 Tomorrow

WN 431 · PHX → ONT

departs 10:05 AM MT · arrives 11:20 AM PT

Forecast issued Wed 6:00 AM ET · 31h before departure

WN 431 isn’t flying PHX → ONT on Thu, Oct 1

This listing came from a typical schedule. According to the FAA, WN 431 flies these legs that day:

LGA → HOU · 6:10 AM · scheduled