Schedule: a typical summer Sunday (the flights of Jul 26, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.

SKYWEST · FLIGHT OO 4637 SCHEDULED · TYPICAL SCHEDULE

Sunday, October 4 Today

OO 4637 · ATW → ORD

departs 10:37 AM CT · arrives 11:59 AM CT

Forecast issued Sun 7:00 PM ET · 7h after departure

OO 4637 isn’t flying ATW → ORD today

This listing came from a typical schedule. According to the FAA, OO 4637 flies these legs today:

DEN → COS · 4:23 PM · landed
DEN → COS · 4:48 PM · scheduled
BIL → DEN · 4:04 PM · scheduled
BIL → DEN · 4:07 PM · landed