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.
SOUTHWEST · FLIGHT WN 3663
SCHEDULED · TYPICAL SCHEDULE
Wednesday, September 30 Today
WN 3663 · SJC → BUR
departs 5:20 PM PT · arrives 6:30 PM PT
Forecast issued Wed 5:00 AM ET · 15h before departure
Watch this flight
Other days
Today
Thu 10/1 25%
Fri 10/2 28%
Sat 10/3 15%
Sun 10/4 29%
Mon 10/5 18%
Tue 10/6 12%
Odds over time
Arrive at BUR more than 15 minutes late?
16%
chance · ±1 pts
+0 pts · 24h
HOW SURE WE ARE
Good. The odds now lean mostly on firmed-up weather forecasts.
Arrive 15+ late
16%
Leave 15+ late
19%
Arrive 1h+ late
4%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
2.9d
2d
1d
Now
12h
6h
Departs
Lands
Arrive at BUR more than 15 minutes late?
Calm-weather odds: 15% · changed +0 pts in 24h
+0 pts
16%
Yes 16%
No 84%
Leave SJC more than 15 minutes late?
Calm-weather odds: 18% · changed +2 pts in 24h
+2 pts
19%
Yes 19%
No 81%
Arrive at BUR more than an hour late?
Calm-weather odds: 3% · changed +0 pts in 24h
+0 pts
4%
Yes 4%
No 96%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 99%
How late will it get to BUR?
On time or early
84%
15–30 min late
6%
30 min–1 hour late
6%
1–2 hours late
2%
Over 2 hours late
1%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
Later flights pick up delays from earlier in the day
↑
WN's recent on-time record
↑
5pm departures from SJC are often late
↓
Wednesdays in September are usually quieter than average
↓
Mostly benign weather forecast at BUR
Weather at each end
SJC (origin)
Gusts 13 kt Ceiling none (clear) Visibility 7 mi Precip none
BUR (destination)
Gusts 11 kt Ceiling none (clear) Visibility 10+ 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.