Schedule: a typical summer Friday (the flights of Jul 31, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
SOUTHWEST · FLIGHT WN 3390
SCHEDULED · TYPICAL SCHEDULE
Friday, October 2
WN 3390 · SAN → BWI
departs 11:15 AM PT · arrives 7:20 PM ET
Forecast issued Fri 10:00 PM ET · 8h after departure
Watch this flight
Other days
Fri 10/2
Mon 10/5 20%
Fri 10/9 28%
Odds over time
Arrive at BWI more than 15 minutes late?
39%
chance · ±0 pts
+0 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
39%
Leave 15+ late
39%
Arrive 1h+ late
9%
Cancelled
2%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
25%
50%
75%
100%
3.7d
2d
1d
12h
6h
Departs
Lands
Arrive at BWI more than 15 minutes late?
Calm-weather odds: 39% · changed +0 pts in 24h
+0 pts
39%
Yes 39%
No 61%
Leave SAN more than 15 minutes late?
Calm-weather odds: 39% · changed +8 pts in 24h
+8 pts
39%
Yes 39%
No 61%
Arrive at BWI more than an hour late?
Calm-weather odds: 9% · changed −1 pt in 24h
−1 pt
9%
Yes 9%
No 91%
Cancelled?
Calm-weather odds: 2% · changed +1 pt in 24h
+1 pt
2%
Yes 2%
No 98%
How late will it get to BWI?
On time or early
60%
15–30 min late
17%
30 min–1 hour late
12%
1–2 hours late
5%
Over 2 hours late
4%
Cancelled
2%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
Arrivals into BWI at that hour are often late
↑
11am departures from SAN are often late
↑
SAN is prone to delays
↓
BWI usually runs smoothly
Weather at each end
SAN (origin)
Gusts 19 kt Ceiling 300 ft Visibility 2.5 mi Precip none
BWI (destination)
Gusts 18 kt Ceiling 6,000 ft Visibility 2.5 mi Precip 0.16 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.