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 1518
SCHEDULED · TYPICAL SCHEDULE
Sunday, October 4
WN 1518 · DEN → DAL
departs 10:05 AM MT · arrives 1:10 PM CT
Forecast issued Thu 10:00 PM ET · 62h before departure
Watch this flight
Other days
Today 36%
Sat 10/3 18%
Sun 10/4
Mon 10/5 12%
Tue 10/6 10%
Wed 10/7 12%
Odds over time
Arrive at DAL more than 15 minutes late?
18%
chance · ±3 pts
– · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
18%
Leave 15+ late
18%
Arrive 1h+ late
3%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
5.6d
Now
2d
1d
12h
6h
Departs
Lands
Arrive at DAL more than 15 minutes late?
Calm-weather odds: 10% · changed – in 24h
–
18%
Yes 18%
No 82%
Leave DEN more than 15 minutes late?
Calm-weather odds: 11% · changed – in 24h
–
18%
Yes 18%
No 82%
Arrive at DAL more than an hour late?
Calm-weather odds: 2% · changed – in 24h
–
3%
Yes 3%
No 97%
Cancelled?
Calm-weather odds: <1% · changed – in 24h
–
<1%
Yes <1%
No 99%
How late will it get to DAL?
On time or early
81%
15–30 min late
10%
30 min–1 hour late
5%
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
↑
Cloud base down to 600 ft forecast at DAL that day
↑
This flight has been late 29% of the time recently
↑
10am departures from DEN are often late
↓
Gusts to 27 kt forecast at DEN that day
↓
Early flights usually leave on time
Weather at each end
DEN (origin)
Gusts 28 kt Ceiling none (clear) Visibility 10+ mi Precip none
DAL (destination)
Gusts 18 kt Ceiling 600 ft Visibility 7 mi Precip 0.14 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.