Schedule: a typical summer Friday (the flights of Jul 31, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
SOUTHWEST · FLIGHT WN 1645
SCHEDULED · TYPICAL SCHEDULE
Friday, October 2 Today
WN 1645 · TYS → DEN
departs 4:20 PM ET · arrives 5:35 PM MT
Forecast issued Fri 3:00 AM ET · 13h before departure
Watch this flight
Other days
Today
Sat 10/3 25%
Sun 10/4 28%
Mon 10/5 20%
Tue 10/6 23%
Wed 10/7 23%
Odds over time
Arrive at DEN more than 15 minutes late?
42%
chance · ±0 pts
+14 pts · 24h
HOW SURE WE ARE
Good. The odds now lean mostly on firmed-up weather forecasts.
Arrive 15+ late
42%
Leave 15+ late
43%
Arrive 1h+ late
9%
Cancelled
3%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
3.8d
2d
1d
Now
6h
Departs
Lands
Arrive at DEN more than 15 minutes late?
Calm-weather odds: 20% · changed +14 pts in 24h
+14 pts
42%
Yes 42%
No 58%
Leave TYS more than 15 minutes late?
Calm-weather odds: 27% · changed +10 pts in 24h
+10 pts
43%
Yes 43%
No 57%
Arrive at DEN more than an hour late?
Calm-weather odds: 3% · changed +2 pts in 24h
+2 pts
9%
Yes 9%
No 91%
Cancelled?
Calm-weather odds: <1% · changed +2 pts in 24h
+2 pts
3%
Yes 3%
No 97%
How late will it get to DEN?
On time or early
56%
15–30 min late
25%
30 min–1 hour late
6%
1–2 hours late
8%
Over 2 hours late
1%
Cancelled
3%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
This flight has been late 36% of the time recently
↑
Arrivals into DEN at that hour are often late
↑
Later flights pick up delays from earlier in the day
↓
TYS usually runs smoothly
↓
Other factors
Weather at each end
TYS (origin)
Gusts 12 kt Ceiling 7,000 ft Visibility 10+ mi Precip none
DEN (destination)
Gusts 29 kt Ceiling none (clear) 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.