Schedule: a typical summer Monday (the flights of Jul 27, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
DELTA · FLIGHT DL 1553
SCHEDULED · TYPICAL SCHEDULE
Monday, October 5
DL 1553 · SLC → DEN
departs 10:15 AM MT · arrives 11:47 AM MT
Forecast issued Fri 5:00 PM ET · 67h before departure
Watch this flight
Other days
Today 10%
Sat 10/3 8%
Sun 10/4 11%
Mon 10/5
Tue 10/6 9%
Wed 10/7 9%
Thu 10/8 10%
Odds over time
Arrive at DEN more than 15 minutes late?
9%
chance · ±0 pts
−1 pt · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
9%
Leave 15+ late
9%
Arrive 1h+ late
3%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
5%
10%
15%
20%
6.5d
Now
2d
1d
12h
6h
Departs
Lands
Arrive at DEN more than 15 minutes late?
Calm-weather odds: 8% · changed −1 pt in 24h
−1 pt
9%
Yes 9%
No 91%
Leave SLC more than 15 minutes late?
Calm-weather odds: 8% · changed −1 pt in 24h
−1 pt
9%
Yes 9%
No 91%
Arrive at DEN more than an hour late?
Calm-weather odds: 2% · changed +0 pts in 24h
+0 pts
3%
Yes 3%
No 97%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 100%
How late will it get to DEN?
On time or early
90%
15–30 min late
3%
30 min–1 hour late
4%
1–2 hours late
<1%
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
↑
DEN is busy at that time
↓
Mostly benign weather forecast at DEN
↓
Mostly benign weather forecast at SLC
Weather at each end
SLC (origin)
Gusts 17 kt Ceiling none (clear) Visibility 10+ mi Precip none
DEN (destination)
Gusts 18 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.