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.

REPUBLIC · FLIGHT YX 4391 SCHEDULED · TYPICAL SCHEDULE

Thursday, October 1 Tomorrow

YX 4391 · PWM → ORD

departs 6:00 AM ET · arrives 8:11 AM CT

Forecast issued Wed 9:00 AM ET · 21h before departure

YX 4391 isn’t flying PWM → ORD on Thu, Oct 1

This listing came from a typical schedule. According to the FAA, YX 4391 flies these legs that day:

MSN → BOS · 8:48 AM · scheduled