Showing Alaska only (incl. its regional partners)All airlines ×

1,936 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

Leave before 9 am: 95% depart on time. After 4 pm it’s 78%.

Best time to leave 7–8 am 95% arrive on time from SEA

Best single flight AS 521 SEA 14:54 → SJC 17:06 · 87% on time Avoid AS 657 SEA 11:29 → SJC 13:40 · 77% 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).

SEA

% 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.


AS 521	SEA 14:54	SJC 17:06	87%
AS 1303	SEA 17:45	SJC 20:00	83%
AS 657	SEA 11:29	SJC 13:40	77%

All 13 Alaska 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.


AS 1448	SEA 07:07	SJC 09:23	2h 16m	51	98%	0.0%	45 min
AS 2186flown by Horizon	SEA 07:10	SJC 09:22	2h 12m	28	100%	0.0%	–
AS 582	SEA 10:00	SJC 12:20	2h 20m	49	87%	6.1%	38 min
AS 335	SEA 11:08	SJC 13:20	2h 12m	66	69%	1.5%	38 min
AS 657	SEA 11:29	SJC 13:40	2h 11m	218	77%	0.0%	39 min
AS 1366	SEA 14:18	SJC 16:32	2h 14m	37	89%	0.0%	44 min
AS 521	SEA 14:54	SJC 17:06	2h 12m	184	87%	1.1%	58 min
AS 319	SEA 15:42	SJC 17:53	2h 11m	51	51%	0.0%	59 min
AS 539	SEA 17:45	SJC 20:00	2h 15m	52	79%	0.0%	39 min
AS 1303	SEA 17:45	SJC 20:00	2h 15m	205	83%	0.5%	37 min
AS 1310	SEA 20:25	SJC 22:40	2h 15m	128	80%	0.8%	51 min
AS 761	SEA 21:20	SJC 23:31	2h 11m	141	77%	0.7%	45 min
AS 523	SEA 21:43	SJC 23:59	2h 16m	14	57%	0.0%	53 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.


Alaska	SEA	SJC	2h 14m	82%	1.0%	1,936	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