Schedule: a typical Thursday (the flights of Jul 30, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
SOUTHWEST · FLIGHT WN 1242
SCHEDULED · TYPICAL SCHEDULE
Thursday, October 1
WN 1242 · LAS → SJC
departs 12:10 PM PT · arrives 1:45 PM PT
Forecast issued Tue 6:00 PM ET · 45h before departure
Watch this flight
Other days
Today 38%
Wed 9/30 22%
Thu 10/1
Fri 10/2 19%
Mon 10/5 16%
Odds over time
Arrive at SJC more than 15 minutes late?
13%
chance · ±1 pts
+0 pts · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
13%
Leave 15+ late
20%
Arrive 1h+ late
4%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
5%
10%
15%
20%
2.9d
Now
1d
12h
6h
Departs
Lands
Arrive at SJC more than 15 minutes late?
Calm-weather odds: 14% · changed +0 pts in 24h
+0 pts
13%
Yes 13%
No 87%
Leave LAS more than 15 minutes late?
Calm-weather odds: 20% · changed +1 pt in 24h
+1 pt
20%
Yes 20%
No 80%
Arrive at SJC more than an hour late?
Calm-weather odds: 3% · changed +0 pts in 24h
+0 pts
4%
Yes 4%
No 96%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 99%
How late will it get to SJC?
On time or early
86%
15–30 min late
2%
30 min–1 hour late
7%
1–2 hours late
3%
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
↑
12pm departures from LAS are often late
↑
LAS is prone to delays
↑
WN's recent on-time record
↓
Mostly benign weather forecast at LAS
↓
Thursdays in October are usually quieter than average
Weather at each end
LAS (origin)
Gusts 10 kt Ceiling none (clear) Visibility 10+ mi Precip none
SJC (destination)
Gusts 11 kt Ceiling 1,200 ft Visibility 7 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.