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Showing Frontier only (incl. its regional partners)All airlines ×
854 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

Fly SFO to LAX: 7 in 10 arrive on time, against 58% from SFO to Ontario.

Best time to leave 6–7 pm 77% arrive on time from SFO
Best airport pair SFO → LAX 70% on time, 1.5% cancelled, 390 flights
Best single flight F9 3308 SFO 15:26 → LAX 17:07 · 70% on time Avoid F9 2678 SFO 09:41 → ONT 11:13 · 58% on time

Time of day × airport

Share of this route’s flights leaving within 15 minutes, by airport and scheduled departure hour, over Aug 2025 – Jul 2026. Blank: no flights then (or fewer than 40 in the year).

9
10
11
12
13
14
15
16
17
18
19
20
21
22
SFO
68
50
77
55
71
65
45
SJC
79
% of this route’s flights leaving within 15 min (small number: flights in the Jun 6 – Jul 31, 2026 schedule): 85+75–8465–7455–64under 55

Pick an hour to see this route’s flights leaving then.

Flights, best and worst

Flights in the Jun 6 – Jul 31, 2026 schedule that ran 150+ times in the year. Times are local. Pick a flight for its history.
F9 3308 SFO 15:26 LAX 17:07 70%
F9 2858 SFO 20:23 LAX 21:59 69%
F9 2678 SFO 09:41 ONT 11:13 58%

All 5 Frontier flights in the current schedule

Every flight that flew in the Jun 6 – Jul 31, 2026 schedule, with its record over Aug 2025 – Jul 2026. Times are local. Click a column to sort.
F9 2678 SFO 09:41 ONT 11:13 1h 34m 196 58% 3.1% 97 min
F9 3308 SFO 15:26 LAX 17:07 1h 41m 156 70% 0.6% 78 min
F9 3582 SFO 17:26 SNA 19:14 1h 48m 55 65% 1.8% 104 min
F9 2858 SFO 20:23 LAX 21:59 1h 36m 234 69% 2.1% 91 min
F9 4082 SJC 20:23 LAX 21:48 1h 25m 63 75% 4.8% 35 min

Nonstops by airline and airport

Arriving within 15 minutes, Aug 2025 – Jul 2026. Pick a row to see that airline’s flights on that airport pair.
Frontier SJC LAX 1h 25m 79% 4.3% 117 Flying now
Frontier SFO LAX 1h 41m 70% 1.5% 390 Flying now
Frontier SFO SNA 1h 48m 69% 0.7% 151 Flying now
Frontier SFO ONT 1h 34m 58% 3.1% 196 Flying now
Flying on a particular day? Pick a date above and the same ranking uses our forecast odds for each flight that day: Tomorrow.

About this data: US DOT on-time records, Aug 2025 – Jul 2026, all US airlines; regional flights count under the airline that sells them. Schedules (which flights and connections exist, and their times) are as of Jun 6 – Jul 31, 2026; seasonal flights outside that window aren’t ranked. Rebuilt monthly. JSON