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 3617
SCHEDULED · TYPICAL SCHEDULE
Friday, October 2
WN 3617 · SEA → DEN
departs 2:35 PM PT · arrives 6:20 PM MT
Forecast issued Fri 10:00 PM ET · 4h after departure
Watch this flight
Other days
Fri 10/2
Today 52%
Mon 10/5 33%
Fri 10/9 38%
Odds over time
Arrive at DEN more than 15 minutes late?
41%
chance · ±0 pts
+2 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
41%
Leave 15+ late
49%
Arrive 1h+ late
9%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
20%
40%
60%
80%
3.8d
2d
1d
12h
6h
Departs
Lands
Arrive at DEN more than 15 minutes late?
Calm-weather odds: 41% · changed +2 pts in 24h
+2 pts
41%
Yes 41%
No 59%
Leave SEA more than 15 minutes late?
Calm-weather odds: 49% · changed +1 pt in 24h
+1 pt
49%
Yes 49%
No 51%
Arrive at DEN more than an hour late?
Calm-weather odds: 9% · changed +0 pts in 24h
+0 pts
9%
Yes 9%
No 91%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 100%
How late will it get to DEN?
On time or early
59%
15–30 min late
13%
30 min–1 hour late
18%
1–2 hours late
7%
Over 2 hours late
2%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
Arrivals into DEN at that hour are often late
↑
This flight has been late 59% of the time recently
↑
WN's recent on-time record
↓
Mostly benign weather forecast at SEA
↓
DEN usually runs smoothly
Weather at each end
SEA (origin)
Gusts 10 kt Ceiling 1,500 ft Visibility 10+ mi Precip none
DEN (destination)
Gusts 17 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.