Schedule: a typical summer Sunday (the flights of Jul 26, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
JETBLUE · FLIGHT B6 263
SCHEDULED · TYPICAL SCHEDULE
Sunday, October 4
B6 263 · JFK → SEA
departs 5:29 PM ET · arrives 8:57 PM PT
Forecast issued Fri 5:00 AM ET · 60h before departure
Watch this flight
Other days
Today 52%
Sat 10/3 24%
Sun 10/4
Mon 10/5 30%
Tue 10/6 22%
Wed 10/7 23%
Thu 10/8 25%
Odds over time
Arrive at SEA more than 15 minutes late?
41%
chance · ±7 pts
– · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
41%
Leave 15+ late
35%
Arrive 1h+ late
13%
Cancelled
1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
5.8d
Now
2d
1d
12h
6h
Departs
Lands
Arrive at SEA more than 15 minutes late?
Calm-weather odds: 22% · changed – in 24h
–
41%
Yes 41%
No 59%
Leave JFK more than 15 minutes late?
Calm-weather odds: 26% · changed – in 24h
–
35%
Yes 35%
No 65%
Arrive at SEA more than an hour late?
Calm-weather odds: 7% · changed – in 24h
–
13%
Yes 13%
No 87%
Cancelled?
Calm-weather odds: <1% · changed – in 24h
–
1%
Yes 1%
No 99%
How late will it get to SEA?
On time or early
58%
15–30 min late
14%
30 min–1 hour late
14%
1–2 hours late
4%
Over 2 hours late
9%
Cancelled
1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
Cloud base down to 300 ft, visibility down to 2 mi forecast at JFK that day
↑
Later flights pick up delays from earlier in the day
↑
This flight has been late 28% of the time recently
↓
Other factors
↓
Cloud base down to 100 ft forecast at SEA that day
Weather at each end
JFK (origin)
Gusts 17 kt Ceiling 300 ft Visibility 2 mi Precip 0.13 in
SEA (destination)
Gusts 7 kt Ceiling 100 ft Visibility 9 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.