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 921
SCHEDULED · TYPICAL SCHEDULE
Friday, October 2 Today
WN 921 · ISP → BWI
departs 3:05 PM ET · arrives 4:20 PM ET
Forecast issued Thu 11:00 PM ET · 16h before departure
Watch this flight
Other days
Today
Mon 10/5 17%
Tue 10/6 10%
Wed 10/7 12%
Odds over time
Arrive at BWI more than 15 minutes late?
24%
chance · ±2 pts
+3 pts · 24h
HOW SURE WE ARE
Good. The odds now lean mostly on firmed-up weather forecasts.
Arrive 15+ late
24%
Leave 15+ late
30%
Arrive 1h+ late
6%
Cancelled
1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
3.7d
2d
1d
Now
12h
6h
Departs
Lands
Arrive at BWI more than 15 minutes late?
Calm-weather odds: 16% · changed +3 pts in 24h
+3 pts
24%
Yes 24%
No 76%
Leave ISP more than 15 minutes late?
Calm-weather odds: 21% · changed +0 pts in 24h
+0 pts
30%
Yes 30%
No 70%
Arrive at BWI more than an hour late?
Calm-weather odds: 3% · changed +0 pts in 24h
+0 pts
6%
Yes 6%
No 94%
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
75%
15–30 min late
10%
30 min–1 hour late
7%
1–2 hours late
2%
Over 2 hours late
3%
Cancelled
1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
WN's recent on-time record
↑
Mostly benign weather forecast at BWI
↑
Later flights pick up delays from earlier in the day
↓
BWI usually runs smoothly
↓
Fridays in October are usually quieter than average
Weather at each end
ISP (origin)
Gusts 18 kt Ceiling 3,500 ft Visibility 10+ mi Precip 0.07 in
BWI (destination)
Gusts 14 kt Ceiling 2,700 ft Visibility 10+ mi Precip 0.09 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.