Schedule: a typical Thursday (the flights of Jul 30, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
DELTA · FLIGHT DL 2117
SCHEDULED · TYPICAL SCHEDULE
Thursday, October 1
DL 2117 · DTW → SLC
departs 8:20 PM ET · arrives 10:15 PM MT
Forecast issued Tue 7:00 PM ET · 49h before departure
Watch this flight
Other days
Today 16%
Wed 9/30 22%
Thu 10/1
Fri 10/2 22%
Sat 10/3 14%
Sun 10/4 27%
Mon 10/5 20%
Odds over time
Arrive at SLC more than 15 minutes late?
30%
chance · ±6 pts
– · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
30%
Leave 15+ late
24%
Arrive 1h+ late
7%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
2.8d
Now
1d
12h
6h
Departs
Lands
Arrive at SLC more than 15 minutes late?
Calm-weather odds: 16% · changed – in 24h
–
30%
Yes 30%
No 70%
Leave DTW more than 15 minutes late?
Calm-weather odds: 21% · changed – in 24h
–
24%
Yes 24%
No 76%
Arrive at SLC more than an hour late?
Calm-weather odds: 3% · changed – in 24h
–
7%
Yes 7%
No 93%
Cancelled?
Calm-weather odds: <1% · changed – in 24h
–
<1%
Yes <1%
No 99%
How late will it get to SLC?
On time or early
70%
15–30 min late
10%
30 min–1 hour late
13%
1–2 hours late
5%
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
↑
Mostly benign weather forecast at DTW
↑
8pm departures from DTW are often late
↑
Later flights pick up delays from earlier in the day
↓
Mostly benign weather forecast at SLC
↓
Thursdays in October are usually quieter than average
Weather at each end
DTW (origin)
Gusts 15 kt Ceiling 5,000 ft Visibility 7.33333 mi Precip 0.14 in
SLC (destination)
Gusts 12 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.