Schedule: a typical summer Sunday (the flights of Jul 26, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
DELTA · FLIGHT DL 1299
SCHEDULED · TYPICAL SCHEDULE
Sunday, October 4 Tomorrow
DL 1299 · IAH → SLC
departs 7:01 PM CT · arrives 9:15 PM MT
Forecast issued Sat 3:00 AM ET · 41h before departure
Watch this flight
Other days
Today 39%
Sun 10/4
Mon 10/5 16%
Tue 10/6 13%
Wed 10/7 14%
Thu 10/8 15%
Fri 10/9 24%
Odds over time
Arrive at SLC more than 15 minutes late?
25%
chance · ±6 pts
−6 pts · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
25%
Leave 15+ late
24%
Arrive 1h+ late
8%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
5.9d
2d
Now
1d
12h
6h
Departs
Lands
Arrive at SLC more than 15 minutes late?
Calm-weather odds: 22% · changed −6 pts in 24h
−6 pts
25%
Yes 25%
No 75%
Leave IAH more than 15 minutes late?
Calm-weather odds: 22% · changed −10 pts in 24h
−10 pts
24%
Yes 24%
No 76%
Arrive at SLC more than an hour late?
Calm-weather odds: 6% · changed −2 pts in 24h
−2 pts
8%
Yes 8%
No 92%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 99%
How late will it get to SLC?
On time or early
74%
15–30 min late
9%
30 min–1 hour late
9%
1–2 hours late
4%
Over 2 hours late
3%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
Later flights pick up delays from earlier in the day
↑
Cloud base down to 500 ft forecast at IAH that day
↑
7pm departures from IAH are often late
↓
Mostly benign weather forecast at SLC
↓
Sundays in October are usually quieter than average
Weather at each end
IAH (origin)
Gusts 22 kt Ceiling 600 ft Visibility 4 mi Precip 0.06 in
SLC (destination)
Gusts 10 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.