Schedule: a typical Saturday (the flights of Jul 25, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
DELTA · FLIGHT DL 1147
SCHEDULED · TYPICAL SCHEDULE
Saturday, October 3
DL 1147 · ATL → ORD
departs 8:55 AM ET · arrives 10:06 AM CT
Forecast issued Wed 10:00 PM ET · 59h before departure
Watch this flight
Other days
Today 36%
Fri 10/2 14%
Sat 10/3
Sun 10/4 17%
Mon 10/5 13%
Tue 10/6 12%
Odds over time
Arrive at ORD more than 15 minutes late?
16%
chance · ±0 pts
+5 pts · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
16%
Leave 15+ late
11%
Arrive 1h+ late
3%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
5%
10%
15%
20%
4.5d
Now
2d
1d
12h
6h
Departs
Lands
Arrive at ORD more than 15 minutes late?
Calm-weather odds: 11% · changed +5 pts in 24h
+5 pts
16%
Yes 16%
No 84%
Leave ATL more than 15 minutes late?
Calm-weather odds: 9% · changed +2 pts in 24h
+2 pts
11%
Yes 11%
No 89%
Arrive at ORD more than an hour late?
Calm-weather odds: 3% · changed +1 pt in 24h
+1 pt
3%
Yes 3%
No 97%
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
84%
15–30 min late
8%
30 min–1 hour late
4%
1–2 hours late
2%
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
↑
Cloud base down to 300 ft, 0.3 in of rain forecast at ATL that day
↑
ORD is busy at that time
↑
This flight has been late 20% of the time recently
↓
DL's recent on-time record
↓
Mostly benign weather forecast at ORD
Weather at each end
ATL (origin)
Gusts 9 kt Ceiling 300 ft Visibility 4 mi Precip 0.38 in
ORD (destination)
Gusts 7 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.