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 4142 SCHEDULED · TYPICAL SCHEDULE

Thursday, October 1 Tomorrow

WN 4142 · PHX → COS

departs 7:45 AM MT · arrives 10:30 AM MT

Forecast issued Wed 4:00 AM ET · 31h before departure

WN 4142 isn’t flying PHX → COS on Thu, Oct 1

This listing came from a typical schedule. According to the FAA, WN 4142 flies these legs that day:

CLE → STL · 7:28 PM · scheduled