Schedule: a typical Wednesday (the flights of Jul 29, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
SKYWEST · FLIGHT OO 4798
SCHEDULED · TYPICAL SCHEDULE
Wednesday, September 30 Today
OO 4798 · ORD → MDT
departs 10:30 AM CT · arrives 1:35 PM ET
Forecast issued Wed 11:00 AM ET · 0h before departure
Watch this flight
Other days
Today
Thu 10/1 33%
Fri 10/2 18%
Sat 10/3 19%
Sun 10/4 19%
Mon 10/5 19%
Tue 10/6 15%
Odds over time
Arrive at MDT more than 15 minutes late?
46%
chance · ±4 pts
+11 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
46%
Leave 15+ late
39%
Arrive 1h+ late
21%
Cancelled
7%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
2.9d
2d
1d
12h
6h
Now
Departs
Lands
Arrive at MDT more than 15 minutes late?
Calm-weather odds: 41% · changed +11 pts in 24h
+11 pts
46%
Yes 46%
No 54%
Leave ORD more than 15 minutes late?
Calm-weather odds: 39% · changed +0 pts in 24h
+0 pts
39%
Yes 39%
No 61%
Arrive at MDT more than an hour late?
Calm-weather odds: 21% · changed +7 pts in 24h
+7 pts
21%
Yes 21%
No 79%
Cancelled?
Calm-weather odds: 5% · changed +4 pts in 24h
+4 pts
7%
Yes 7%
No 93%
How late will it get to MDT?
On time or early
50%
15–30 min late
8%
30 min–1 hour late
15%
1–2 hours late
15%
Over 2 hours late
5%
Cancelled
7%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
Cloud base down to 500 ft, visibility down to 1.75 mi, 1.1 in of rain forecast at ORD that day
↑
10am departures from ORD are often late
↑
OO's recent on-time record
↓
Mostly benign weather forecast at MDT
↓
MDT usually runs smoothly
Weather at each end
ORD (origin)
Gusts 17 kt Ceiling 500 ft Visibility 1.75 mi Precip 1.14 in
MDT (destination)
Gusts 7 kt Ceiling 4,700 ft 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.