Schedule: a typical Saturday (the flights of Jul 25, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
DELTA · FLIGHT DL 2543
SCHEDULED · TYPICAL SCHEDULE
Saturday, October 3
DL 2543 · DEN → SEA
departs 6:39 PM MT · arrives 8:41 PM PT
Forecast issued Thu 4:00 PM ET · 53h before departure
Watch this flight
Other days
Today 60%
Fri 10/2 30%
Sat 10/3
Sun 10/4 33%
Mon 10/5 28%
Tue 10/6 23%
Wed 10/7 19%
Odds over time
Arrive at SEA more than 15 minutes late?
20%
chance · ±9 pts
– · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
20%
Leave 15+ late
24%
Arrive 1h+ late
5%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
4.9d
Now
1d
12h
6h
Departs
Lands
Arrive at SEA more than 15 minutes late?
Calm-weather odds: 15% · changed – in 24h
–
20%
Yes 20%
No 80%
Leave DEN more than 15 minutes late?
Calm-weather odds: 16% · changed – in 24h
–
24%
Yes 24%
No 76%
Arrive at SEA more than an hour late?
Calm-weather odds: 3% · changed – in 24h
–
5%
Yes 5%
No 95%
Cancelled?
Calm-weather odds: <1% · changed – in 24h
–
<1%
Yes <1%
No 99%
How late will it get to SEA?
On time or early
79%
15–30 min late
9%
30 min–1 hour late
7%
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
↑
6pm departures from DEN are often late
↑
Later flights pick up delays from earlier in the day
↑
Arrivals into SEA at that hour are often late
↓
DL's recent on-time record
↓
Saturdays in October are usually quieter than average
Weather at each end
DEN (origin)
Gusts 24 kt Ceiling none (clear) Visibility 10+ mi Precip none
SEA (destination)
Gusts 12 kt Ceiling 200 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.