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 1131
SCHEDULED · TYPICAL SCHEDULE
Saturday, October 3
DL 1131 · ATL → IAH
departs 5:30 PM ET · arrives 6:41 PM CT
Forecast issued Thu 3:00 PM ET · 50h before departure
Watch this flight
Other days
Today 50%
Fri 10/2 41%
Sat 10/3
Sun 10/4 22%
Mon 10/5 20%
Tue 10/6 16%
Wed 10/7 15%
Odds over time
Arrive at IAH more than 15 minutes late?
45%
chance · ±5 pts
−4 pts · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
45%
Leave 15+ late
45%
Arrive 1h+ late
17%
Cancelled
3%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
20%
40%
60%
80%
4.8d
Now
1d
12h
6h
Departs
Lands
Arrive at IAH more than 15 minutes late?
Calm-weather odds: 14% · changed −4 pts in 24h
−4 pts
45%
Yes 45%
No 55%
Leave ATL more than 15 minutes late?
Calm-weather odds: 15% · changed +3 pts in 24h
+3 pts
45%
Yes 45%
No 55%
Arrive at IAH more than an hour late?
Calm-weather odds: 4% · changed +2 pts in 24h
+2 pts
17%
Yes 17%
No 83%
Cancelled?
Calm-weather odds: <1% · changed +1 pt in 24h
+1 pt
3%
Yes 3%
No 97%
How late will it get to IAH?
On time or early
54%
15–30 min late
18%
30 min–1 hour late
9%
1–2 hours late
9%
Over 2 hours late
7%
Cancelled
3%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
0.8 in of rain forecast at IAH that day
↑
Mostly benign weather forecast at ATL
↑
Arrivals into IAH at that hour are often late
↓
DL's recent on-time record
↓
Saturdays in October are usually quieter than average
Weather at each end
ATL (origin)
Gusts 8 kt Ceiling 3,800 ft Visibility 4 mi Precip 0.43 in
IAH (destination)
Gusts 14 kt Ceiling 3,900 ft Visibility 10+ mi Precip 0.60 in
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.