Schedule: a typical summer Thursday (the flights of Jul 30, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
SOUTHWEST · FLIGHT WN 3717
SCHEDULED · TYPICAL SCHEDULE
Thursday, October 1
WN 3717 · SJU → BWI
departs 5:30 AM AT · arrives 9:40 AM ET
Forecast issued Thu 10:00 PM ET · 16h after departure
Watch this flight
Other days
Thu 10/1
Today 8%
Mon 10/5 6%
Fri 10/9 7%
Odds over time
Arrive at BWI more than 15 minutes late?
5%
chance · ±0 pts
−2 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
5%
Leave 15+ late
3%
Arrive 1h+ late
1%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
5%
10%
15%
20%
2.8d
2d
1d
12h
6h
Departs
Lands
Arrive at BWI more than 15 minutes late?
Calm-weather odds: 5% · changed −2 pts in 24h
−2 pts
5%
Yes 5%
No 95%
Leave SJU more than 15 minutes late?
Calm-weather odds: 3% · changed −3 pts in 24h
−3 pts
3%
Yes 3%
No 97%
Arrive at BWI more than an hour late?
Calm-weather odds: 1% · changed +0 pts in 24h
+0 pts
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
94%
15–30 min late
2%
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
↑
0.5 in of rain forecast at SJU that day
↓
Early flights usually leave on time
↓
Thursdays in October are usually quieter than average
Weather at each end
SJU (origin)
Gusts 25 kt Ceiling 3,200 ft Visibility 10+ mi Precip 0.08 in
BWI (destination)
Gusts 7 kt Ceiling none (clear) Visibility 6 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.