Schedule: a typical summer Saturday (the flights of Jul 25, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
SOUTHWEST · FLIGHT WN 3559
SCHEDULED · TYPICAL SCHEDULE
Saturday, October 3 Tomorrow
WN 3559 · SAT → BWI
departs 5:10 AM CT · arrives 9:30 AM ET
Forecast issued Fri 3:00 PM ET · 15h before departure
Watch this flight
Other days
Today 4%
Sat 10/3
Sun 10/4 5%
Mon 10/5 4%
Thu 10/8 3%
Odds over time
Arrive at BWI more than 15 minutes late?
3%
chance · ±0 pts
−1 pt · 24h
HOW SURE WE ARE
Good. The odds now lean mostly on firmed-up weather forecasts.
Arrive 15+ late
3%
Leave 15+ late
3%
Arrive 1h+ late
1%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
3%
6%
9%
12%
4.3d
2d
1d
Now
6h
Departs
Lands
Arrive at BWI more than 15 minutes late?
Calm-weather odds: 2% · changed −1 pt in 24h
−1 pt
3%
Yes 3%
No 97%
Leave SAT more than 15 minutes late?
Calm-weather odds: 2% · changed +0 pts in 24h
+0 pts
3%
Yes 3%
No 97%
Arrive at BWI more than an hour late?
Calm-weather odds: <1% · changed −1 pt in 24h
−1 pt
1%
Yes 1%
No 99%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 99%
How late will it get to BWI?
On time or early
96%
15–30 min late
1%
30 min–1 hour late
<1%
1–2 hours late
<1%
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
↑
Cloud base down to 800 ft forecast at SAT that day
↑
Other factors
↓
Early flights usually leave on time
↓
5am departures from SAT are usually not late
Weather at each end
SAT (origin)
Gusts 21 kt Ceiling 900 ft Visibility 7 mi Precip 0.20 in
BWI (destination)
Gusts 15 kt Ceiling 2,700 ft Visibility 9 mi Precip 0.02 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.