Schedule: a typical Wednesday (the flights of Jul 29, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
JETBLUE · FLIGHT B6 640
SCHEDULED · TYPICAL SCHEDULE
Wednesday, September 30 Today
B6 640 · CLE → BOS
departs 4:38 PM ET · arrives 6:29 PM ET
Forecast issued Wed 9:00 AM ET · 8h before departure
Watch this flight
Other days
Today
Thu 10/1 28%
Fri 10/2 41%
Sat 10/3 14%
Sun 10/4 42%
Mon 10/5 42%
Tue 10/6 24%
Odds over time
Arrive at BOS more than 15 minutes late?
43%
chance · ±0 pts
+13 pts · 24h
HOW SURE WE ARE
Good. The odds now lean mostly on firmed-up weather forecasts.
Arrive 15+ late
43%
Leave 15+ late
36%
Arrive 1h+ late
20%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
2.9d
2d
1d
12h
Now
6h
Departs
Lands
Arrive at BOS more than 15 minutes late?
Calm-weather odds: 35% · changed +13 pts in 24h
+13 pts
43%
Yes 43%
No 57%
Leave CLE more than 15 minutes late?
Calm-weather odds: 36% · changed +5 pts in 24h
+5 pts
36%
Yes 36%
No 64%
Arrive at BOS more than an hour late?
Calm-weather odds: 16% · changed +2 pts in 24h
+2 pts
20%
Yes 20%
No 80%
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
57%
15–30 min late
4%
30 min–1 hour late
19%
1–2 hours late
12%
Over 2 hours late
7%
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
↑
B6's recent on-time record
↑
Cloud base down to 800 ft, visibility down to 2 mi forecast at BOS that day
↓
Mostly benign weather forecast at CLE
↓
Wednesdays in September are usually quieter than average
Weather at each end
CLE (origin)
Gusts 14 kt Ceiling 7,000 ft Visibility 10+ mi Precip none
BOS (destination)
Gusts 8 kt Ceiling 800 ft Visibility 2 mi Precip 0.06 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.