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7,223 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

Leave before 9 am: 93% depart on time. After 4 pm it’s 63%.

Best time to leave 6–7 am 92% arrive on time from SFO
Best single flight UA 444 SFO 08:15 → SAN 09:59 · 81% on time Avoid F9 4306 SFO 22:23 → SAN 00:15 · 51% 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).

5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
SFO
88
96
93
89
79
59
66
66
60
64
49
57
73
64
71
50
59
59
% 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
San Diego flights leaving SFO 5–6 am: 1Close ×
WN 3508 SFO 05:50 SAN 07:25 1h 35m 16 100% 0.0% –

Airlines on this route

Arriving within 15 minutes. Regional flights count under the airline that sells them. Pick an airline to see its flights.
United (incl. SkyWest) 2,656 75% 0.4% 56 min
Alaska (incl. SkyWest, Horizon) 2,360 66% 3.1% 58 min
Frontier 206 53% 3.9% 85 min
Southwest 2,001 51% 1.3% 64 min

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.
UA 444 SFO 08:15 SAN 09:59 81%
UA 2142 SFO 22:42 SAN 00:31 73%
UA 2177 SFO 10:05 SAN 11:51 68%
F9 4306 SFO 22:23 SAN 00:15 51%
All 36 flights on this route →

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.
United SFO SAN 1h 41m 75% 0.4% 2,656 Flying now
Alaska SFO SAN 1h 41m 66% 3.1% 2,360 Flying now
Frontier SFO SAN 1h 41m 53% 3.9% 206 Flying now
Southwest SFO SAN 1h 35m 51% 1.3% 2,001 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