Schedule: a typical summer Monday (the flights of Jul 27, 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
Monday, October 5 Tomorrow
WN 3617 · SEA → DEN
departs 2:35 PM PT · arrives 6:20 PM MT
Forecast issued Sun 3:00 AM ET · 39h before departure
Watch this flight
Other days
Today 41%
Mon 10/5
Fri 10/9 38%
Odds over time
Arrive at DEN more than 15 minutes late?
31%
chance · ±3 pts
+1 pt · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
31%
Leave 15+ late
37%
Arrive 1h+ late
6%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
6.7d
2d
Now
1d
12h
6h
Departs
Lands
Arrive at DEN more than 15 minutes late?
Calm-weather odds: 27% · changed +1 pt in 24h
+1 pt
31%
Yes 31%
No 69%
Leave SEA more than 15 minutes late?
Calm-weather odds: 30% · changed +0 pts in 24h
+0 pts
37%
Yes 37%
No 63%
Arrive at DEN more than an hour late?
Calm-weather odds: 5% · changed +1 pt in 24h
+1 pt
6%
Yes 6%
No 94%
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
69%
15–30 min late
14%
30 min–1 hour late
11%
1–2 hours late
4%
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 DEN
↓
Mondays in October are usually quieter than average
Weather at each end
SEA (origin)
Gusts 6 kt Ceiling 200 ft Visibility 0.3 mi Precip none
DEN (destination)
Gusts 18 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.