Schedule: a typical summer Sunday (the flights of Jul 26, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
SOUTHWEST · FLIGHT WN 3419
SCHEDULED · TYPICAL SCHEDULE
Sunday, October 4 Tomorrow
WN 3419 · DEN → COS
departs 7:50 AM MT · arrives 8:45 AM MT
Forecast issued Sat 7:00 AM ET · 27h before departure
Watch this flight
Other days
Today 26%
Sun 10/4
Mon 10/5 7%
Thu 10/8 18%
Fri 10/9 7%
Odds over time
Arrive at COS more than 15 minutes late?
8%
chance · ±4 pts
+1 pt · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
8%
Leave 15+ late
11%
Arrive 1h+ late
2%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
5%
10%
15%
20%
5.5d
2d
Now
12h
6h
Departs
Lands
Arrive at COS more than 15 minutes late?
Calm-weather odds: 8% · changed +1 pt in 24h
+1 pt
8%
Yes 8%
No 92%
Leave DEN more than 15 minutes late?
Calm-weather odds: 10% · changed +0 pts in 24h
+0 pts
11%
Yes 11%
No 89%
Arrive at COS more than an hour late?
Calm-weather odds: 2% · changed +0 pts in 24h
+0 pts
2%
Yes 2%
No 98%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 100%
How late will it get to COS?
On time or early
91%
15–30 min late
4%
30 min–1 hour late
3%
1–2 hours late
1%
Over 2 hours late
<1%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
DEN is busy at that time
↑
Other factors
↓
Early flights usually leave on time
↓
Mostly benign weather forecast at DEN
Weather at each end
DEN (origin)
Gusts 24 kt Ceiling none (clear) Visibility 10+ mi Precip none
COS (destination)
Gusts 24 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.