Schedule: a typical summer Saturday (the flights of Jul 25, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
SOUTHWEST · FLIGHT WN 4181
SCHEDULED · TYPICAL SCHEDULE
Saturday, October 3 Tomorrow
WN 4181 · TPA → MHT
departs 8:00 AM ET · arrives 11:00 AM ET
Forecast issued Fri 12:00 PM ET · 20h before departure
Watch this flight
Odds over time
Arrive at MHT more than 15 minutes late?
7%
chance · ±2 pts
+1 pt · 24h
HOW SURE WE ARE
Good. The odds now lean mostly on firmed-up weather forecasts.
Arrive 15+ late
7%
Leave 15+ late
8%
Arrive 1h+ late
2%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
3%
6%
9%
12%
4.4d
2d
1d
Now
12h
6h
Departs
Lands
Arrive at MHT more than 15 minutes late?
Calm-weather odds: 4% · changed +1 pt in 24h
+1 pt
7%
Yes 7%
No 93%
Leave TPA more than 15 minutes late?
Calm-weather odds: 6% · changed +0 pts in 24h
+0 pts
8%
Yes 8%
No 92%
Arrive at MHT more than an hour late?
Calm-weather odds: 2% · changed +0 pts in 24h
+0 pts
2%
Yes 2%
No 98%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 99%
How late will it get to MHT?
On time or early
92%
15–30 min late
1%
30 min–1 hour late
3%
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
↑
Thunderstorms forecast at TPA that day
↑
This flight has been late 17% of the time recently
↓
Early flights usually leave on time
↓
8am departures from TPA are usually not late
Weather at each end
TPA (origin)
Gusts 14 kt
Ceiling 7,000 ft
Visibility 10+ mi
Precip 0.22 in
MHT (destination)
Gusts 11 kt
Ceiling 9,333 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.