Schedule: a typical Wednesday (the flights of Jul 29, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
SOUTHWEST · FLIGHT WN 3677
SCHEDULED · TYPICAL SCHEDULE
Wednesday, September 30 Today
WN 3677 · DAL → DEN
departs 7:30 PM CT · arrives 8:50 PM MT
Forecast issued Wed 1:00 PM ET · 8h before departure
Watch this flight
Other days
Today
Tue 10/6 23%
Odds over time
Arrive at DEN more than 15 minutes late?
55%
chance · ±0 pts
−3 pts · 24h
HOW SURE WE ARE
Good. The odds now lean mostly on firmed-up weather forecasts.
Arrive 15+ late
55%
Leave 15+ late
66%
Arrive 1h+ late
15%
Cancelled
1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
25%
50%
75%
100%
2.9d
2d
1d
12h
Now
Departs
Lands
Arrive at DEN more than 15 minutes late?
Calm-weather odds: 25% · changed −3 pts in 24h
−3 pts
55%
Yes 55%
No 45%
Leave DAL more than 15 minutes late?
Calm-weather odds: 35% · changed +5 pts in 24h
+5 pts
66%
Yes 66%
No 34%
Arrive at DEN more than an hour late?
Calm-weather odds: 6% · changed −12 pts in 24h
−12 pts
15%
Yes 15%
No 85%
Cancelled?
Calm-weather odds: <1% · changed −3 pts in 24h
−3 pts
1%
Yes 1%
No 99%
How late will it get to DEN?
On time or early
44%
15–30 min late
10%
30 min–1 hour late
29%
1–2 hours late
10%
Over 2 hours late
5%
Cancelled
1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
Gusts to 27 kt forecast at DAL that day
↑
Arrivals into DEN at that hour are often late
↑
Later flights pick up delays from earlier in the day
↓
Wednesdays in September are usually quieter than average
↓
Other factors
Weather at each end
DAL (origin)
Gusts 27 kt Ceiling 2,100 ft Visibility 10+ mi Precip 0.14 in
DEN (destination)
Gusts 18 kt Ceiling 6,000 ft Visibility 10+ mi Precip 0.05 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.