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 4381
SCHEDULED · TYPICAL SCHEDULE
Friday, October 2
WN 4381 · DEN → PIT
departs 3:35 PM MT · arrives 8:35 PM ET
Forecast issued Fri 10:00 PM ET · 4h after departure
Watch this flight
Other days
Fri 10/2
Mon 10/5 28%
Fri 10/9 31%
Odds over time
Arrive at PIT more than 15 minutes late?
37%
chance · ±0 pts
+0 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
37%
Leave 15+ late
37%
Arrive 1h+ late
10%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
3.8d
2d
1d
12h
6h
Departs
Lands
Now
Arrive at PIT more than 15 minutes late?
Calm-weather odds: 37% · changed +0 pts in 24h
+0 pts
37%
Yes 37%
No 63%
Leave DEN more than 15 minutes late?
Calm-weather odds: 37% · changed +0 pts in 24h
+0 pts
37%
Yes 37%
No 63%
Arrive at PIT more than an hour late?
Calm-weather odds: 10% · changed +0 pts in 24h
+0 pts
10%
Yes 10%
No 90%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 99%
How late will it get to PIT?
On time or early
62%
15–30 min late
16%
30 min–1 hour late
11%
1–2 hours late
8%
Over 2 hours late
2%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
3pm departures from DEN are often late
↑
This flight has been late 32% of the time recently
↑
Later flights pick up delays from earlier in the day
↓
PIT usually runs smoothly
↓
Gusts to 31 kt forecast at DEN that day
Weather at each end
DEN (origin)
Gusts 17 kt Ceiling none (clear) Visibility 10+ mi Precip none
PIT (destination)
Gusts 21 kt Ceiling 500 ft Visibility 5 mi Precip 0.12 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.