Schedule: the flights that flew on Tuesday, Oct 6, 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
Tuesday, October 13 Tomorrow
DL 2921 · SLC → SEA
departs 1:20 PM MT · arrives 2:35 PM PT
Forecast issued Mon 4:00 AM ET · 35h before departure
Watch this flight
Other days
Today 51%
Tue 10/13
Wed 10/14 18%
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?
21%
chance · ±5 pts
−4 pts · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
21%
Leave 15+ late
15%
Arrive 1h+ late
3%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
6.6d
2d
Now
1d
12h
6h
Departs
Lands
Arrive at SEA more than 15 minutes late?
Calm-weather odds: 13% · changed −4 pts in 24h
−4 pts
21%
Yes 21%
No 79%
Leave SLC more than 15 minutes late?
Calm-weather odds: 11% · changed −1 pt in 24h
−1 pt
15%
Yes 15%
No 85%
Arrive at SEA more than an hour late?
Calm-weather odds: 2% · changed −1 pt in 24h
−1 pt
3%
Yes 3%
No 97%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 99%
How late will it get to SEA?
On time or early
79%
15–30 min late
10%
30 min–1 hour late
8%
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
↑
0.7 in of rain forecast at SLC that day
↑
SEA is prone to delays
↑
Arrivals into SEA at that hour are often late
↓
Tuesdays in October are usually quieter than average
↓
Mostly benign weather forecast at SEA
Weather at each end
SLC (origin)
Gusts 16 kt Ceiling 1,700 ft Visibility 5 mi Precip 0.61 in
SEA (destination)
Gusts 6 kt Ceiling 3,400 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.