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 3963
SCHEDULED · TYPICAL SCHEDULE
Sunday, October 4
WN 3963 · TYS → DAL
departs 5:45 PM ET · arrives 7:05 PM CT
Forecast issued Fri 10:00 AM ET · 56h before departure
Watch this flight
Odds over time
Arrive at DAL more than 15 minutes late?
41%
chance · ±0 pts
– · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
41%
Leave 15+ late
39%
Arrive 1h+ late
11%
Cancelled
1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
5.8d
Now
2d
1d
12h
6h
Departs
Lands
Arrive at DAL more than 15 minutes late?
Calm-weather odds: 22% · changed – in 24h
–
41%
Yes 41%
No 59%
Leave TYS more than 15 minutes late?
Calm-weather odds: 26% · changed – in 24h
–
39%
Yes 39%
No 61%
Arrive at DAL more than an hour late?
Calm-weather odds: 3% · changed – in 24h
–
11%
Yes 11%
No 89%
Cancelled?
Calm-weather odds: <1% · changed – in 24h
–
1%
Yes 1%
No 99%
How late will it get to DAL?
On time or early
58%
15–30 min late
14%
30 min–1 hour late
16%
1–2 hours late
7%
Over 2 hours late
4%
Cancelled
1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
Cloud base down to 200 ft, visibility down to 0.2 mi, 0.9 in of rain forecast at TYS that day
↑
Arrivals into DAL at that hour are often late
↑
Later flights pick up delays from earlier in the day
↓
TYS usually runs smoothly
↓
Sundays in October are usually quieter than average
Weather at each end
TYS (origin)
Gusts 7 kt Ceiling 200 ft Visibility 0.3 mi Precip 1.33 in
DAL (destination)
Gusts 18 kt Ceiling 600 ft Visibility 10+ mi Precip 0.07 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.