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 638
SCHEDULED · TYPICAL SCHEDULE
Thursday, October 1
B6 638 · AUS → BOS
departs 6:42 PM CT · arrives 11:50 PM ET
Forecast issued Tue 4:00 PM ET · 52h before departure
Watch this flight
Other days
Today 41%
Wed 9/30 37%
Thu 10/1
Fri 10/2 36%
Sat 10/3 37%
Sun 10/4 48%
Mon 10/5 45%
Odds over time
Arrive at BOS more than 15 minutes late?
56%
chance · ±5 pts
– · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
56%
Leave 15+ late
54%
Arrive 1h+ late
28%
Cancelled
5%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
20%
40%
60%
80%
2.7d
Now
1d
12h
6h
Departs
Lands
Arrive at BOS more than 15 minutes late?
Calm-weather odds: 30% · changed – in 24h
–
56%
Yes 56%
No 44%
Leave AUS more than 15 minutes late?
Calm-weather odds: 31% · changed – in 24h
–
54%
Yes 54%
No 46%
Arrive at BOS more than an hour late?
Calm-weather odds: 13% · changed – in 24h
–
28%
Yes 28%
No 72%
Cancelled?
Calm-weather odds: <1% · changed – in 24h
–
5%
Yes 5%
No 95%
How late will it get to BOS?
On time or early
42%
15–30 min late
11%
30 min–1 hour late
16%
1–2 hours late
11%
Over 2 hours late
16%
Cancelled
5%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
Cloud base down to 700 ft, 1.0 in of rain, thunderstorms forecast at AUS that day
↑
This flight has been late 41% of the time recently
↑
6pm departures from AUS are often late
↓
Visibility down to 1 mi forecast at BOS that day
↓
AUS usually runs smoothly
Weather at each end
AUS (origin)
Gusts 20 kt Ceiling 700 ft Visibility 3.66667 mi Precip 1.00 in
BOS (destination)
Gusts 16 kt Ceiling none (clear) 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.