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.
FRONTIER · FLIGHT F9 4306
SCHEDULED · TYPICAL SCHEDULE
Thursday, October 1 Tomorrow
F9 4306 · SFO → SAN
departs 10:23 PM PT · arrives 12:04 AM PT
Forecast issued Wed 1:00 PM ET · 36h before departure
Watch this flight
Other days
Today 39%
Thu 10/1
Fri 10/2 37%
Sat 10/3 32%
Sun 10/4 44%
Mon 10/5 40%
Tue 10/6 29%
Odds over time
Arrive at SAN more than 15 minutes late?
50%
chance · ±14 pts
+6 pts · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
50%
Leave 15+ late
39%
Arrive 1h+ late
19%
Cancelled
3%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
20%
40%
60%
80%
2.8d
2d
Now
1d
12h
6h
Departs
Lands
Arrive at SAN more than 15 minutes late?
Calm-weather odds: 37% · changed +6 pts in 24h
+6 pts
50%
Yes 50%
No 50%
Leave SFO more than 15 minutes late?
Calm-weather odds: 31% · changed +7 pts in 24h
+7 pts
39%
Yes 39%
No 61%
Arrive at SAN more than an hour late?
Calm-weather odds: 14% · changed +2 pts in 24h
+2 pts
19%
Yes 19%
No 81%
Cancelled?
Calm-weather odds: 2% · changed +0 pts in 24h
+0 pts
3%
Yes 3%
No 97%
How late will it get to SAN?
On time or early
48%
15–30 min late
17%
30 min–1 hour late
13%
1–2 hours late
12%
Over 2 hours late
7%
Cancelled
3%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
F9's recent on-time record
↑
This flight has been late 45% of the time recently
↑
10pm departures from SFO are often late
↓
Cloud base down to 1,100 ft forecast at SFO that day
Weather at each end
SFO (origin)
Gusts 11 kt Ceiling 1,100 ft Visibility 7 mi Precip none
SAN (destination)
Gusts 15 kt Ceiling 600 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.