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 310
SCHEDULED · TYPICAL SCHEDULE
Sunday, October 4 Tomorrow
WN 310 · COS → SAN
departs 6:15 PM MT · arrives 7:30 PM PT
Forecast issued Sat 7:00 AM ET · 37h before departure
Watch this flight
Odds over time
Arrive at SAN more than 15 minutes late?
39%
chance · ±8 pts
+0 pts · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
39%
Leave 15+ late
35%
Arrive 1h+ late
8%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
5.9d
2d
Now
1d
12h
6h
Departs
Lands
Arrive at SAN more than 15 minutes late?
Calm-weather odds: 28% · changed +0 pts in 24h
+0 pts
39%
Yes 39%
No 61%
Leave COS more than 15 minutes late?
Calm-weather odds: 33% · changed +2 pts in 24h
+2 pts
35%
Yes 35%
No 65%
Arrive at SAN more than an hour late?
Calm-weather odds: 6% · changed +0 pts in 24h
+0 pts
8%
Yes 8%
No 92%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 99%
How late will it get to SAN?
On time or early
61%
15–30 min late
21%
30 min–1 hour late
10%
1–2 hours late
5%
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
↑
Later flights pick up delays from earlier in the day
↑
SAN is prone to delays
↑
Arrivals into SAN at that hour are often late
↓
Mostly benign weather forecast at SAN
↓
COS usually runs smoothly
Weather at each end
COS (origin)
Gusts 24 kt Ceiling none (clear) Visibility 10+ mi Precip none
SAN (destination)
Gusts 14 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.