Schedule: a typical summer Monday (the flights of Jul 27, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
FRONTIER · FLIGHT F9 2457
SCHEDULED · TYPICAL SCHEDULE
Monday, October 5
F9 2457 · LAX → SJC
departs 6:11 PM PT · arrives 7:28 PM PT
Forecast issued Sat 6:00 PM ET · 51h before departure
Watch this flight
Other days
Today 36%
Sun 10/4 42%
Mon 10/5
Fri 10/9 31%
Odds over time
Arrive at SJC more than 15 minutes late?
27%
chance · ±3 pts
+1 pt · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
27%
Leave 15+ late
31%
Arrive 1h+ late
13%
Cancelled
2%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
6.9d
Now
1d
12h
6h
Departs
Lands
Arrive at SJC more than 15 minutes late?
Calm-weather odds: 19% · changed +1 pt in 24h
+1 pt
27%
Yes 27%
No 73%
Leave LAX more than 15 minutes late?
Calm-weather odds: 26% · changed +0 pts in 24h
+0 pts
31%
Yes 31%
No 69%
Arrive at SJC more than an hour late?
Calm-weather odds: 9% · changed +0 pts in 24h
+0 pts
13%
Yes 13%
No 87%
Cancelled?
Calm-weather odds: 1% · changed +0 pts in 24h
+0 pts
2%
Yes 2%
No 98%
How late will it get to SJC?
On time or early
71%
15–30 min late
9%
30 min–1 hour late
5%
1–2 hours late
9%
Over 2 hours late
3%
Cancelled
2%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
F9's recent on-time record
↑
Later flights pick up delays from earlier in the day
↑
6pm departures from LAX are often late
↓
Mondays in October are usually quieter than average
↓
SJC usually runs smoothly
Weather at each end
LAX (origin)
Gusts 16 kt Ceiling none (clear) Visibility 10+ mi Precip none
SJC (destination)
Gusts 14 kt Ceiling none (clear) Visibility 4 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.