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 638
SCHEDULED · TYPICAL SCHEDULE
Wednesday, September 30 Tomorrow
B6 638 · AUS → BOS
departs 6:42 PM CT · arrives 11:50 PM ET
Forecast issued Tue 11:00 PM ET · 21h before departure
Watch this flight
Other days
Today
Thu 10/1 56%
Fri 10/2 36%
Sat 10/3 37%
Sun 10/4 48%
Mon 10/5 45%
Tue 10/6 32%
Odds over time
Arrive at BOS more than 15 minutes late?
39%
chance · ±2 pts
+6 pts · 24h
HOW SURE WE ARE
Good. The odds now lean mostly on firmed-up weather forecasts.
Arrive 15+ late
39%
Leave 15+ late
42%
Arrive 1h+ late
16%
Cancelled
1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
2.7d
2d
1d
Now
12h
6h
Departs
Lands
Arrive at BOS more than 15 minutes late?
Calm-weather odds: 25% · changed +6 pts in 24h
+6 pts
39%
Yes 39%
No 61%
Leave AUS more than 15 minutes late?
Calm-weather odds: 32% · changed +6 pts in 24h
+6 pts
42%
Yes 42%
No 58%
Arrive at BOS more than an hour late?
Calm-weather odds: 13% · changed +0 pts in 24h
+0 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
60%
15–30 min late
<1%
30 min–1 hour late
22%
1–2 hours late
11%
Over 2 hours late
5%
Cancelled
1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
B6's recent on-time record
↑
Gusts to 25 kt forecast at AUS that day
↑
6pm departures from AUS are often late
↓
Wednesdays in September are usually quieter than average
↓
Mostly benign weather forecast at BOS
Weather at each end
AUS (origin)
Gusts 25 kt Ceiling 1,800 ft Visibility 10+ mi Precip 0.04 in
BOS (destination)
Gusts 8 kt Ceiling 2,200 ft Visibility 7 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.