Schedule: a typical summer Sunday (the flights of Jul 26, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
SOUTHWEST · FLIGHT WN 3942
SCHEDULED · TYPICAL SCHEDULE
Sunday, October 4 Today
WN 3942 · BWI → JAX
departs 8:05 PM ET · arrives 10:20 PM ET
Forecast issued Sun 5:00 AM ET · 15h before departure
Watch this flight
Odds over time
Arrive at JAX more than 15 minutes late?
50%
chance · ±5 pts
+9 pts · 24h
HOW SURE WE ARE
Good. The odds now lean mostly on firmed-up weather forecasts.
Arrive 15+ late
50%
Leave 15+ late
57%
Arrive 1h+ late
14%
Cancelled
2%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
20%
40%
60%
80%
5.9d
2d
1d
Now
6h
Departs
Lands
Arrive at JAX more than 15 minutes late?
Calm-weather odds: 30% · changed +9 pts in 24h
+9 pts
50%
Yes 50%
No 50%
Leave BWI more than 15 minutes late?
Calm-weather odds: 38% · changed +3 pts in 24h
+3 pts
57%
Yes 57%
No 43%
Arrive at JAX more than an hour late?
Calm-weather odds: 6% · changed +4 pts in 24h
+4 pts
14%
Yes 14%
No 86%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
2%
Yes 2%
No 98%
How late will it get to JAX?
On time or early
49%
15–30 min late
11%
30 min–1 hour late
24%
1–2 hours late
11%
Over 2 hours late
2%
Cancelled
2%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
Cloud base down to 1,100 ft, 0.7 in of rain, thunderstorms forecast at JAX that day
↑
8pm departures from BWI are often late
↑
Later flights pick up delays from earlier in the day
↓
Sundays in October are usually quieter than average
↓
Other factors
Weather at each end
BWI (origin)
Gusts 12 kt Ceiling 300 ft Visibility 2.5 mi Precip 0.18 in
JAX (destination)
Gusts 8 kt Ceiling 1,100 ft Visibility 6 mi Precip 0.67 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.