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.
DELTA · FLIGHT DL 1199
SCHEDULED · TYPICAL SCHEDULE
Monday, October 5 Tomorrow
DL 1199 · ATL → ORD
departs 10:40 PM ET · arrives 11:53 PM CT
Forecast issued Sun 1:00 PM ET · 34h before departure
Watch this flight
Other days
Today 40%
Mon 10/5
Tue 10/6 10%
Wed 10/7 14%
Fri 10/9 17%
Sat 10/10 24%
Odds over time
Arrive at ORD more than 15 minutes late?
15%
chance · ±1 pts
−1 pt · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
15%
Leave 15+ late
22%
Arrive 1h+ late
5%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
6.9d
2d
Now
1d
12h
6h
Departs
Lands
Arrive at ORD more than 15 minutes late?
Calm-weather odds: 13% · changed −1 pt in 24h
−1 pt
15%
Yes 15%
No 85%
Leave ATL more than 15 minutes late?
Calm-weather odds: 18% · changed +4 pts in 24h
+4 pts
22%
Yes 22%
No 78%
Arrive at ORD more than an hour late?
Calm-weather odds: 4% · changed +1 pt in 24h
+1 pt
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
85%
15–30 min late
6%
30 min–1 hour late
4%
1–2 hours late
4%
Over 2 hours late
<1%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
This flight has been late 28% of the time recently
↑
10pm departures from ATL are often late
↑
Arrivals into ORD at that hour are often late
↓
Mondays in October are usually quieter than average
↓
Mostly benign weather forecast at ORD
Weather at each end
ATL (origin)
Gusts 11 kt Ceiling 400 ft Visibility 4 mi Precip 0.05 in
ORD (destination)
Gusts 8 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.