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.

SKYWEST · FLIGHT OO 5598 SCHEDULED · TYPICAL SCHEDULE

Tuesday, September 29 Yesterday

OO 5598 · MLI → ORD

departs 6:30 AM CT · arrives 7:45 AM CT

Forecast issued Tue 10:00 PM ET · 14h after departure

OO 5598 isn’t flying MLI → ORD on Tue, Sep 29

This listing came from a typical schedule. According to the FAA, OO 5598 flies these legs that day:

DEN → SAT · 8:53 PM · scheduled
DEN → SAT · 8:58 PM · landed
DEN → SAT · 8:45 PM · landed
DEN → SAT · 8:53 PM · scheduled