Schedule: the flights that flew on Saturday, Oct 24, re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
DELTA · FLIGHT DL 1551
SCHEDULED · TYPICAL SCHEDULE
Saturday, October 31 Tomorrow
DL 1551 · LAX → SEA
departs 7:03 PM PT · arrives 9:52 PM PT
Forecast issued Sat 1:00 AM ET · 21h before departure
Watch this flight
Other days
Today
Sun 11/1 24%
Mon 11/2 33%
Tue 11/3 34%
Wed 11/4 32%
Thu 11/5 39%
Fri 11/6 41%
Odds over time
Arrive at SEA more than 15 minutes late?
19%
chance · ±3 pts
−6 pts · 24h
HOW SURE WE ARE
Good. The odds now lean mostly on firmed-up weather forecasts.
Arrive 15+ late
19%
Leave 15+ late
24%
Arrive 1h+ late
6%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
6.9d
2d
Now
12h
6h
Departs
Lands
Arrive at SEA more than 15 minutes late?
Calm-weather odds: 19% · changed −6 pts in 24h
−6 pts
19%
Yes 19%
No 81%
Leave LAX more than 15 minutes late?
Calm-weather odds: 22% · changed −6 pts in 24h
−6 pts
24%
Yes 24%
No 76%
Arrive at SEA more than an hour late?
Calm-weather odds: 5% · changed −2 pts in 24h
−2 pts
6%
Yes 6%
No 94%
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
81%
15–30 min late
1%
30 min–1 hour late
12%
1–2 hours late
3%
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
↑
Later flights pick up delays from earlier in the day
↑
Arrivals into SEA at that hour are often late
↑
7pm departures from LAX are often late
↓
Mostly benign weather forecast at SEA
↓
DL's recent on-time record
Weather at each end
LAX (origin)
Gusts 11 kt Ceiling 4,500 ft Visibility 10+ mi Precip 0.13 in
SEA (destination)
Gusts 9 kt Ceiling 8,320 ft Visibility 7.2 mi Precip 0.11 in
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.