Schedule: a typical summer Sunday (the flights of Jul 26, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
SOUTHWEST · FLIGHT WN 40
SCHEDULED · TYPICAL SCHEDULE
Sunday, October 4
WN 40 · HOU → DAL
departs 4:00 PM CT · arrives 5:10 PM CT
Forecast issued Fri 4:00 PM ET · 49h before departure
Watch this flight
Other days
Today 35%
Sun 10/4
Mon 10/5 19%
Thu 10/8 13%
Odds over time
Arrive at DAL more than 15 minutes late?
36%
chance · ±4 pts
+1 pt · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
36%
Leave 15+ late
37%
Arrive 1h+ late
9%
Cancelled
1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
5.8d
Now
1d
12h
6h
Departs
Lands
Arrive at DAL more than 15 minutes late?
Calm-weather odds: 19% · changed +1 pt in 24h
+1 pt
36%
Yes 36%
No 64%
Leave HOU more than 15 minutes late?
Calm-weather odds: 20% · changed +1 pt in 24h
+1 pt
37%
Yes 37%
No 63%
Arrive at DAL more than an hour late?
Calm-weather odds: 3% · changed +1 pt in 24h
+1 pt
9%
Yes 9%
No 91%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
1%
Yes 1%
No 99%
How late will it get to DAL?
On time or early
63%
15–30 min late
13%
30 min–1 hour late
14%
1–2 hours late
7%
Over 2 hours late
3%
Cancelled
1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
Cloud base down to 1,000 ft, 0.5 in of rain forecast at HOU that day
↑
Later flights pick up delays from earlier in the day
↑
4pm departures from HOU are often late
↓
Sundays in October are usually quieter than average
↓
HOU usually runs smoothly
Weather at each end
HOU (origin)
Gusts 19 kt Ceiling 1,000 ft Visibility 10+ mi Precip 0.37 in
DAL (destination)
Gusts 18 kt Ceiling 1,000 ft Visibility 8 mi Precip 0.03 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.