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 639
SCHEDULED · TYPICAL SCHEDULE
Thursday, October 1 Tomorrow
B6 639 · BOS → AUS
departs 2:21 PM ET · arrives 5:45 PM CT
Forecast issued Wed 10:00 AM ET · 28h before departure
Watch this flight
Other days
Today 45%
Thu 10/1
Fri 10/2 46%
Sat 10/3 26%
Sun 10/4 34%
Mon 10/5 34%
Tue 10/6 26%
Odds over time
Arrive at AUS more than 15 minutes late?
58%
chance · ±8 pts
+8 pts · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
58%
Leave 15+ late
39%
Arrive 1h+ late
26%
Cancelled
5%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
20%
40%
60%
80%
2.8d
2d
Now
1d
12h
6h
Departs
Lands
Arrive at AUS more than 15 minutes late?
Calm-weather odds: 30% · changed +8 pts in 24h
+8 pts
58%
Yes 58%
No 42%
Leave BOS more than 15 minutes late?
Calm-weather odds: 21% · changed +3 pts in 24h
+3 pts
39%
Yes 39%
No 61%
Arrive at AUS more than an hour late?
Calm-weather odds: 9% · changed +4 pts in 24h
+4 pts
26%
Yes 26%
No 74%
Cancelled?
Calm-weather odds: <1% · changed +2 pts in 24h
+2 pts
5%
Yes 5%
No 95%
How late will it get to AUS?
On time or early
40%
15–30 min late
12%
30 min–1 hour late
18%
1–2 hours late
17%
Over 2 hours late
8%
Cancelled
5%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
Cloud base down to 800 ft, 1.6 in of rain, thunderstorms forecast at AUS that day
↑
B6's recent on-time record
↑
BOS is prone to delays
↓
Thursdays in October are usually quieter than average
↓
Mostly benign weather forecast at BOS
Weather at each end
BOS (origin)
Gusts 16 kt Ceiling none (clear) Visibility 9 mi Precip none
AUS (destination)
Gusts 19 kt Ceiling 800 ft Visibility 5.66667 mi Precip 1.56 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.