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 1938
SCHEDULED · TYPICAL SCHEDULE
Sunday, October 4
WN 1938 · SAN → SLC
departs 5:15 PM PT · arrives 8:10 PM MT
Forecast issued Fri 11:00 AM ET · 57h before departure
Watch this flight
Odds over time
Arrive at SLC more than 15 minutes late?
33%
chance · ±0 pts
– · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
33%
Leave 15+ late
39%
Arrive 1h+ late
8%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
5.9d
Now
2d
1d
12h
6h
Departs
Lands
Arrive at SLC more than 15 minutes late?
Calm-weather odds: 30% · changed – in 24h
–
33%
Yes 33%
No 67%
Leave SAN more than 15 minutes late?
Calm-weather odds: 39% · changed – in 24h
–
39%
Yes 39%
No 61%
Arrive at SLC more than an hour late?
Calm-weather odds: 6% · changed – in 24h
–
8%
Yes 8%
No 92%
Cancelled?
Calm-weather odds: <1% · changed – in 24h
–
<1%
Yes <1%
No 99%
How late will it get to SLC?
On time or early
67%
15–30 min late
16%
30 min–1 hour late
9%
1–2 hours late
6%
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
↑
5pm departures from SAN are often late
↑
SAN is prone to delays
↓
Mostly benign weather forecast at SLC
↓
Mostly benign weather forecast at SAN
Weather at each end
SAN (origin)
Gusts 12 kt Ceiling none (clear) Visibility 10+ mi Precip none
SLC (destination)
Gusts 11 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.