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.
DELTA · FLIGHT DL 1633
SCHEDULED · TYPICAL SCHEDULE
Wednesday, September 30 Tomorrow
DL 1633 · DTW → IAH
departs 8:25 PM ET · arrives 10:24 PM CT
Forecast issued Tue 6:00 PM ET · 26h before departure
Watch this flight
Other days
Today 14%
Wed 9/30
Thu 10/1 39%
Fri 10/2 21%
Sat 10/3 15%
Sun 10/4 21%
Mon 10/5 21%
Odds over time
Arrive at IAH more than 15 minutes late?
18%
chance · ±2 pts
−1 pt · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
18%
Leave 15+ late
16%
Arrive 1h+ late
5%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
2.8d
2d
Now
12h
6h
Departs
Lands
Arrive at IAH more than 15 minutes late?
Calm-weather odds: 9% · changed −1 pt in 24h
−1 pt
18%
Yes 18%
No 82%
Leave DTW more than 15 minutes late?
Calm-weather odds: 15% · changed −1 pt in 24h
−1 pt
16%
Yes 16%
No 84%
Arrive at IAH more than an hour late?
Calm-weather odds: 3% · 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 IAH?
On time or early
82%
15–30 min late
7%
30 min–1 hour late
6%
1–2 hours late
3%
Over 2 hours late
2%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
8pm departures from DTW are often late
↑
Later flights pick up delays from earlier in the day
↑
Arrivals into IAH at that hour are often late
↓
Wednesdays in September are usually quieter than average
↓
Gusts to 27 kt forecast at IAH that day
Weather at each end
DTW (origin)
Gusts 14 kt Ceiling 6,000 ft Visibility 10+ mi Precip none
IAH (destination)
Gusts 27 kt Ceiling 6,000 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.