OO399 ChicagoORD MilwaukeeMKE
OO399 by SkyWest Airlines flies from Chicago (ORD) to Milwaukee (MKE).
scheduled from ORD
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at ORD and MKE are near their clear-air norm right now, so this reflects the route's recent baseline rather than a weather penalty. For this route and airline, under conditions like today's, over the last 90 days.
Pro Flight Search tracking, 90 days · the weather × delay correlation study → · live weather risk by airport →
When it flies
scheduled departuresEach mark is a scheduled departure at its origin-local time. Today is highlighted.
Other Chicago to Milwaukee flights today
same route · SkyWest AirlinesIf OO399 is cancelled, this is the other SkyWest Airlines nonstop flight from Chicago to Milwaukee on the same day, with scheduled departure times in ORD local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How OO399 actually runs
Pro Flight Search has tracked every published board update for OO399 across the ORD and MKE boards: schedule changes, gate pushes and actual clocks. Combined risk score: 5.5/100. Based on airport operations, weather, and cached board history at ORD and MKE.
The verdict above is that record speaking, so it reflects how OO399 operates rather than what the timetable promises. Numbers refresh as new flights operate.
Planning around OO399? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.
Pro Flight Search — OO399 Chicago to Milwaukee on-time performance, measured from the ORD and MKE airport boards.
https://proflightsearch.com/flight/OO399
.