Schedule: the flights that flew on Wednesday, Oct 7, re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
DELTA · FLIGHT DL 2921
SCHEDULED · TYPICAL SCHEDULE
Wednesday, October 14
DL 2921 · SLC → SEA
departs 1:20 PM MT · arrives 2:35 PM PT
Forecast issued Mon 4:00 AM ET · 59h before departure
Watch this flight
Other days
Today 51%
Tue 10/13 21%
Wed 10/14
Thu 10/15 25%
Fri 10/16 28%
Sat 10/17 19%
Sun 10/18 26%
Odds over time
Arrive at SEA more than 15 minutes late?
18%
chance · ±2 pts
– · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
18%
Leave 15+ late
14%
Arrive 1h+ late
3%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
6.6d
Now
2d
1d
12h
6h
Departs
Lands
Arrive at SEA more than 15 minutes late?
Calm-weather odds: 13% · changed – in 24h
–
18%
Yes 18%
No 82%
Leave SLC more than 15 minutes late?
Calm-weather odds: 11% · changed – in 24h
–
14%
Yes 14%
No 86%
Arrive at SEA more than an hour late?
Calm-weather odds: 2% · changed – in 24h
–
3%
Yes 3%
No 97%
Cancelled?
Calm-weather odds: <1% · changed – in 24h
–
<1%
Yes <1%
No 99%
How late will it get to SEA?
On time or early
81%
15–30 min late
9%
30 min–1 hour late
7%
1–2 hours late
1%
Over 2 hours late
1%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
Arrivals into SEA at that hour are often late
↑
SEA is prone to delays
↑
Early flights usually leave on time
↓
Wednesdays in October are usually quieter than average
↓
DL's recent on-time record
Weather at each end
SLC (origin)
Gusts 15 kt Ceiling 3,200 ft Visibility 10+ mi Precip 0.09 in
SEA (destination)
Gusts 7 kt Ceiling 700 ft Visibility 8 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.