Schedule: a typical summer Monday (the flights of Jul 27, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
SKYWEST · FLIGHT OO 5399
SCHEDULED · TYPICAL SCHEDULE
Monday, October 5 Tomorrow
OO 5399 · MKE → ORD
departs 10:28 AM CT · arrives 11:38 AM CT
Forecast issued Sun 7:00 AM ET · 28h before departure
Watch this flight
Other days
Today 26%
Mon 10/5
Fri 10/9 17%
Odds over time
Arrive at ORD more than 15 minutes late?
10%
chance · ±1 pts
−1 pt · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
10%
Leave 15+ late
14%
Arrive 1h+ late
5%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
6.5d
2d
Now
12h
6h
Departs
Lands
Arrive at ORD more than 15 minutes late?
Calm-weather odds: 12% · changed −1 pt in 24h
−1 pt
10%
Yes 10%
No 90%
Leave MKE more than 15 minutes late?
Calm-weather odds: 14% · changed −1 pt in 24h
−1 pt
14%
Yes 14%
No 86%
Arrive at ORD more than an hour late?
Calm-weather odds: 5% · changed +0 pts in 24h
+0 pts
5%
Yes 5%
No 95%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 99%
How late will it get to ORD?
On time or early
89%
15–30 min late
2%
30 min–1 hour late
3%
1–2 hours late
3%
Over 2 hours late
3%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
OO's recent on-time record
↑
Arrivals into ORD at that hour are often late
↑
This flight has been late 21% of the time recently
↓
Mostly benign weather forecast at ORD
↓
Mostly benign weather forecast at MKE
Weather at each end
MKE (origin)
Gusts 10 kt Ceiling none (clear) Visibility 10+ mi Precip none
ORD (destination)
Gusts 9 kt Ceiling none (clear) Visibility 10+ mi Precip none
How this resolves
Yes if the gate arrival is more than 15 minutes after the scheduled arrival. Cancelled or diverted flights resolve N/A.
Every question here is display only — there is no betting or money involved. Gate times come from the airline; a cancellation resolves only the “Cancelled?” question, and a diversion voids the delay questions.