Schedule: a typical summer Wednesday (the flights of Jul 29, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
JETBLUE · FLIGHT B6 1388
SCHEDULED · TYPICAL SCHEDULE
Wednesday, September 30
B6 1388 · LAX → BOS
departs 10:59 AM PT · arrives 7:42 PM ET
Forecast issued Wed 10:00 PM ET · 8h after departure
Watch this flight
Other days
Wed 9/30
Today 24%
Sun 10/4 45%
Mon 10/5 30%
Fri 10/9 26%
Odds over time
Arrive at BOS more than 15 minutes late?
41%
chance · ±0 pts
+8 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
41%
Leave 15+ late
31%
Arrive 1h+ late
16%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
2.7d
2d
1d
12h
6h
Departs
Lands
Arrive at BOS more than 15 minutes late?
Calm-weather odds: 41% · changed +8 pts in 24h
+8 pts
41%
Yes 41%
No 59%
Leave LAX more than 15 minutes late?
Calm-weather odds: 31% · changed +3 pts in 24h
+3 pts
31%
Yes 31%
No 69%
Arrive at BOS more than an hour late?
Calm-weather odds: 16% · changed +3 pts in 24h
+3 pts
16%
Yes 16%
No 84%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 99%
How late will it get to BOS?
On time or early
58%
15–30 min late
15%
30 min–1 hour late
10%
1–2 hours late
13%
Over 2 hours late
4%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
Arrivals into BOS at that hour are often late
↑
10am departures from LAX are often late
↑
B6's recent on-time record
↓
Wednesdays in September are usually quieter than average
↓
Cloud base down to 1,000 ft forecast at LAX that day
Weather at each end
LAX (origin)
Gusts 13 kt Ceiling 1,000 ft Visibility 7 mi Precip none
BOS (destination)
Gusts 8 kt Ceiling 700 ft Visibility 2 mi Precip 0.02 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.