Schedule: a typical summer Saturday (the flights of Jul 25, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
SOUTHWEST · FLIGHT WN 3479
SCHEDULED · TYPICAL SCHEDULE
Saturday, October 3
WN 3479 · COS → DAL
departs 12:00 PM MT · arrives 2:50 PM CT
Forecast issued Thu 10:00 PM ET · 40h before departure
Watch this flight
Odds over time
Arrive at DAL more than 15 minutes late?
24%
chance · ±2 pts
+4 pts · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
24%
Leave 15+ late
24%
Arrive 1h+ late
6%
Cancelled
2%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
4.7d
2d
Now
1d
12h
6h
Departs
Lands
Arrive at DAL more than 15 minutes late?
Calm-weather odds: 10% · changed +4 pts in 24h
+4 pts
24%
Yes 24%
No 76%
Leave COS more than 15 minutes late?
Calm-weather odds: 15% · changed +0 pts in 24h
+0 pts
24%
Yes 24%
No 76%
Arrive at DAL more than an hour late?
Calm-weather odds: 2% · changed +1 pt in 24h
+1 pt
6%
Yes 6%
No 94%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
2%
Yes 2%
No 98%
How late will it get to DAL?
On time or early
75%
15–30 min late
10%
30 min–1 hour late
8%
1–2 hours late
4%
Over 2 hours late
2%
Cancelled
2%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
Cloud base down to 400 ft, visibility down to 2 mi, 0.3 in of rain forecast at DAL that day
↑
Other factors
↑
This flight has been late 26% of the time recently
↓
Mostly benign weather forecast at COS
↓
WN's recent on-time record
Weather at each end
COS (origin)
Gusts 16 kt Ceiling none (clear) Visibility 10+ mi Precip none
DAL (destination)
Gusts 14 kt Ceiling 400 ft Visibility 2 mi Precip 0.48 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.