Schedule: the flights that flew on Wednesday, Oct 7, re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
JETBLUE · FLIGHT B6 1621
SCHEDULED · TYPICAL SCHEDULE
Wednesday, October 14
B6 1621 · LHR → BOS
departs 8:35 AM BST · arrives 11:44 AM ET
Forecast issued Mon 11:00 AM ET · 41h before departure
Watch this flight
Other days
Today 30%
Tue 10/13 23%
Wed 10/14
Thu 10/15 22%
Fri 10/16 25%
Sat 10/17 23%
Sun 10/18 20%
Odds over time
Arrive at BOS more than 15 minutes late?
20%
chance · ±1 pts
+2 pts · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
20%
Leave 15+ late
19%
Arrive 1h+ late
5%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
6.1d
2d
Now
1d
12h
6h
Departs
Lands
Arrive at BOS more than 15 minutes late?
Calm-weather odds: 15% · changed +2 pts in 24h
+2 pts
20%
Yes 20%
No 80%
Leave LHR more than 15 minutes late?
Calm-weather odds: 13% · changed −3 pts in 24h
−3 pts
19%
Yes 19%
No 81%
Arrive at BOS more than an hour late?
Calm-weather odds: 3% · changed +0 pts in 24h
+0 pts
5%
Yes 5%
No 95%
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
80%
15–30 min late
10%
30 min–1 hour late
5%
1–2 hours late
3%
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
↑
This route's recent record
↑
B6's recent on-time record
↑
LHR is busy at that time
↓
Mostly benign weather forecast at LHR
↓
Wednesdays in October are usually quieter than average
Weather at each end
LHR (origin)
Gusts 8 kt Ceiling none (clear) Visibility 10+ mi Precip none
BOS (destination)
Gusts 19 kt Ceiling 200 ft Visibility 1 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.