Schedule: a typical Thursday (the flights of Jul 30, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
SOUTHWEST · FLIGHT WN 4439
SCHEDULED · TYPICAL SCHEDULE
Thursday, October 1 Today
WN 4439 · BWI → PWM
departs 8:10 AM ET · arrives 9:45 AM ET
Forecast issued Thu 3:00 AM ET · 5h before departure
Watch this flight
Other days
Today
Fri 10/2 6%
Sun 10/4 12%
Mon 10/5 6%
Tue 10/6 4%
Wed 10/7 4%
Odds over time
Arrive at PWM more than 15 minutes late?
9%
chance · ±0 pts
+3 pts · 24h
HOW SURE WE ARE
High. The odds now come mostly from live FAA and airport data.
Arrive 15+ late
9%
Leave 15+ late
10%
Arrive 1h+ late
3%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
5%
10%
15%
20%
2.9d
2d
1d
12h
Now
Departs
Lands
Arrive at PWM more than 15 minutes late?
Calm-weather odds: 8% · changed +3 pts in 24h
+3 pts
9%
Yes 9%
No 91%
Leave BWI more than 15 minutes late?
Calm-weather odds: 8% · changed +0 pts in 24h
+0 pts
10%
Yes 10%
No 90%
Arrive at PWM more than an hour late?
Calm-weather odds: 1% · changed +1 pt in 24h
+1 pt
3%
Yes 3%
No 97%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 100%
How late will it get to PWM?
On time or early
91%
15–30 min late
5%
30 min–1 hour late
2%
1–2 hours late
2%
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
↑
Cloud base down to 200 ft, visibility down to 0.25 mi forecast at PWM that day
↑
BWI is prone to delays
↓
Arrivals into PWM at that hour are usually not late
↓
Early flights usually leave on time
Weather at each end
BWI (origin)
Gusts 10 kt Ceiling none (clear) Visibility 10+ mi Precip none
PWM (destination)
Gusts 15 kt Ceiling 200 ft Visibility 0.25 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.