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 2455
SCHEDULED · TYPICAL SCHEDULE
Thursday, October 1 Tomorrow
DL 2455 · STL → SLC
departs 2:30 PM CT · arrives 4:37 PM MT
Forecast issued Wed 1:00 AM ET · 38h before departure
Watch this flight
Other days
Today 11%
Thu 10/1
Fri 10/2 11%
Sun 10/4 13%
Mon 10/5 10%
Tue 10/6 7%
Odds over time
Arrive at SLC more than 15 minutes late?
12%
chance · ±3 pts
−1 pt · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
12%
Leave 15+ late
17%
Arrive 1h+ late
5%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
2.8d
2d
Now
1d
12h
6h
Departs
Lands
Arrive at SLC more than 15 minutes late?
Calm-weather odds: 7% · changed −1 pt in 24h
−1 pt
12%
Yes 12%
No 88%
Leave STL more than 15 minutes late?
Calm-weather odds: 11% · changed +1 pt in 24h
+1 pt
17%
Yes 17%
No 83%
Arrive at SLC more than an hour late?
Calm-weather odds: 3% · changed +0 pts in 24h
+0 pts
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 SLC?
On time or early
87%
15–30 min late
3%
30 min–1 hour late
4%
1–2 hours late
2%
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
↑
Cloud base down to 600 ft forecast at STL that day
↑
Later flights pick up delays from earlier in the day
↑
2pm departures from STL are often late
↓
STL usually runs smoothly
↓
This flight has been late 11% of the time recently
Weather at each end
STL (origin)
Gusts 16 kt Ceiling 600 ft Visibility 3 mi Precip 0.18 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.