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 3613
SCHEDULED · TYPICAL SCHEDULE
Sunday, October 4
WN 3613 · SEA → BWI
departs 9:25 PM PT · arrives 5:20 AM ET
Forecast issued Fri 1:00 PM ET · 59h before departure
Watch this flight
Other days
Today 56%
Sat 10/3 25%
Sun 10/4
Mon 10/5 25%
Odds over time
Arrive at BWI more than 15 minutes late?
26%
chance · ±4 pts
– · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
26%
Leave 15+ late
36%
Arrive 1h+ late
7%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
6.1d
Now
2d
1d
12h
6h
Departs
Lands
Arrive at BWI more than 15 minutes late?
Calm-weather odds: 30% · changed – in 24h
–
26%
Yes 26%
No 74%
Leave SEA more than 15 minutes late?
Calm-weather odds: 37% · changed – in 24h
–
36%
Yes 36%
No 64%
Arrive at BWI more than an hour late?
Calm-weather odds: 7% · changed – in 24h
–
7%
Yes 7%
No 93%
Cancelled?
Calm-weather odds: <1% · changed – in 24h
–
<1%
Yes <1%
No 99%
How late will it get to BWI?
On time or early
73%
15–30 min late
8%
30 min–1 hour late
10%
1–2 hours late
6%
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
↑
This flight has been late 38% of the time recently
↑
Later flights pick up delays from earlier in the day
↑
WN's recent on-time record
↓
Cloud base down to 100 ft forecast at SEA that day
↓
BWI usually runs smoothly
Weather at each end
SEA (origin)
Gusts 7 kt Ceiling 100 ft Visibility 9 mi Precip none
BWI (destination)
Gusts 11 kt Ceiling 200 ft Visibility 1 mi Precip 0.42 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.