Schedule: a typical summer Monday (the flights of Jul 27, 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
Monday, October 5
WN 4381 · DEN → PIT
departs 3:35 PM MT · arrives 8:35 PM ET
Forecast issued Sat 6:00 PM ET · 48h before departure
Watch this flight
Other days
Mon 10/5
Fri 10/9 31%
Odds over time
Arrive at PIT more than 15 minutes late?
26%
chance · ±4 pts
−5 pts · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
26%
Leave 15+ late
32%
Arrive 1h+ late
6%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
6.7d
Now
1d
12h
6h
Departs
Lands
Arrive at PIT more than 15 minutes late?
Calm-weather odds: 24% · changed −5 pts in 24h
−5 pts
26%
Yes 26%
No 74%
Leave DEN more than 15 minutes late?
Calm-weather odds: 30% · changed +0 pts in 24h
+0 pts
32%
Yes 32%
No 68%
Arrive at PIT more than an hour late?
Calm-weather odds: 5% · changed −1 pt in 24h
−1 pt
6%
Yes 6%
No 94%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 100%
How late will it get to PIT?
On time or early
74%
15–30 min late
12%
30 min–1 hour late
8%
1–2 hours late
4%
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
↑
This flight has been late 32% of the time recently
↑
3pm departures from DEN are often late
↑
Later flights pick up delays from earlier in the day
↓
Mondays in October are usually quieter than average
↓
Mostly benign weather forecast at DEN
Weather at each end
DEN (origin)
Gusts 17 kt Ceiling none (clear) Visibility 10+ mi Precip none
PIT (destination)
Gusts 17 kt Ceiling 2,700 ft Visibility 10+ 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.