Schedule: the flights that flew on Sunday, Nov 8, re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
SOUTHWEST · FLIGHT WN 1637
SCHEDULED · TYPICAL SCHEDULE
Sunday, November 15
WN 1637 · DEN → HOU
departs 6:33 PM MT · arrives 10:00 PM CT
Forecast issued Fri 5:00 PM ET · 52h before departure
Watch this flight
Other days
Today 68%
Sat 11/14 41%
Sun 11/15
Mon 11/16 32%
Thu 11/19 43%
Odds over time
Arrive at HOU more than 15 minutes late?
46%
chance · ±9 pts
– · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
46%
Leave 15+ late
54%
Arrive 1h+ late
10%
Cancelled
4%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
20%
40%
60%
80%
6.9d
Now
1d
12h
6h
Departs
Lands
Arrive at HOU more than 15 minutes late?
Calm-weather odds: 30% · changed – in 24h
–
46%
Yes 46%
No 54%
Leave DEN more than 15 minutes late?
Calm-weather odds: 52% · changed – in 24h
–
54%
Yes 54%
No 46%
Arrive at HOU more than an hour late?
Calm-weather odds: 5% · changed – in 24h
–
10%
Yes 10%
No 90%
Cancelled?
Calm-weather odds: <1% · changed – in 24h
–
4%
Yes 4%
No 96%
How late will it get to HOU?
On time or early
52%
15–30 min late
15%
30 min–1 hour late
19%
1–2 hours late
7%
Over 2 hours late
3%
Cancelled
4%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
Gusts to 29 kt, cloud base down to 400 ft, visibility down to 1 mi, 1.6 in of rain forecast at HOU that day
↑
WN's recent on-time record
↑
6pm departures from DEN are often late
↓
Sundays in November are usually quieter than average
↓
Cloud base down to 967 ft forecast at DEN that day
Weather at each end
DEN (origin)
Gusts 12 kt Ceiling 1,100 ft Visibility 5 mi Precip none
HOU (destination)
Gusts 29 kt Ceiling 400 ft Visibility 1 mi Precip 1.62 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.