Schedule: a typical Thursday (the flights of Jul 30, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
JETBLUE · FLIGHT B6 2120
SCHEDULED · TYPICAL SCHEDULE
Thursday, October 1
B6 2120 · SAN → BOS
departs 8:40 PM PT · arrives 5:19 AM ET
Forecast issued Tue 9:00 PM ET · 51h before departure
Watch this flight
Other days
Today 26%
Wed 9/30 23%
Thu 10/1
Fri 10/2 27%
Sat 10/3 22%
Sun 10/4 34%
Mon 10/5 30%
Odds over time
Arrive at BOS more than 15 minutes late?
28%
chance · ±1 pts
– · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
28%
Leave 15+ late
28%
Arrive 1h+ late
10%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
2.7d
Now
1d
12h
6h
Departs
Lands
Arrive at BOS more than 15 minutes late?
Calm-weather odds: 22% · changed – in 24h
–
28%
Yes 28%
No 72%
Leave SAN more than 15 minutes late?
Calm-weather odds: 22% · changed – in 24h
–
28%
Yes 28%
No 72%
Arrive at BOS more than an hour late?
Calm-weather odds: 7% · changed – in 24h
–
10%
Yes 10%
No 90%
Cancelled?
Calm-weather odds: <1% · changed – in 24h
–
<1%
Yes <1%
No 99%
How late will it get to BOS?
On time or early
71%
15–30 min late
2%
30 min–1 hour late
16%
1–2 hours late
8%
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
↑
8pm departures from SAN are often late
↑
B6's recent on-time record
↑
SAN is prone to delays
↓
Mostly benign weather forecast at BOS
↓
BOS usually runs smoothly
Weather at each end
SAN (origin)
Gusts 14 kt Ceiling 500 ft Visibility 7 mi Precip none
BOS (destination)
Gusts 16 kt Ceiling none (clear) Visibility 3 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.