Schedule: a typical Wednesday (the flights of Jul 29, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
SOUTHWEST · FLIGHT WN 4439
SCHEDULED · TYPICAL SCHEDULE
Wednesday, September 30 Today
WN 4439 · BWI → PWM
departs 8:15 AM ET · arrives 9:55 AM ET
Forecast issued Wed 11:00 AM ET · 3h after departure
Watch this flight
Other days
Today
Thu 10/1 8%
Fri 10/2 6%
Sun 10/4 12%
Mon 10/5 6%
Tue 10/6 4%
Odds over time
Arrive at PWM more than 15 minutes late?
6%
chance · ±0 pts
+1 pt · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
6%
Leave 15+ late
9%
Arrive 1h+ late
1%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
3%
6%
9%
12%
2.9d
2d
1d
12h
6h
Departs
Lands
Now
Arrive at PWM more than 15 minutes late?
Calm-weather odds: 6% · changed +1 pt in 24h
+1 pt
6%
Yes 6%
No 94%
Leave BWI more than 15 minutes late?
Calm-weather odds: 8% · changed −1 pt in 24h
−1 pt
9%
Yes 9%
No 91%
Arrive at PWM 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 PWM?
On time or early
93%
15–30 min late
3%
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
↑
BWI is busy at that time
↓
Arrivals into PWM at that hour are usually not late
↓
Early flights usually leave on time
Weather at each end
BWI (origin)
Gusts 9 kt Ceiling 5,500 ft Visibility 10+ mi Precip none
PWM (destination)
Gusts 8 kt Ceiling 300 ft Visibility 3 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.