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 4256 SCHEDULED · TYPICAL SCHEDULE

Tuesday, September 29 Today

WN 4256 · COS → PHX

departs 7:25 AM MT · arrives 8:15 AM MT

Forecast issued Tue 9:00 PM ET · 12h after departure

WN 4256 isn’t flying COS → PHX today

This listing came from a typical schedule. According to the FAA, WN 4256 flies these legs today:

DAL → BWI · 6:52 AM · landed
DAL → BWI · 6:59 AM · scheduled