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4,422 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

Leave before 9 am: 94% depart on time. After 4 pm it’s 78%.

Best time to leave 6–7 am 97% arrive on time from SJC
Best single flight DL 4041 SJC 07:20 → SEA 09:49 · 95% on time Avoid AS 762 SJC 08:00 → SEA 10:20 · 78% 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).

6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
SJC
98
96
88
89
91
92
80
76
80
82
88
79
81
71
75
63
% 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.

Airlines on this route

Arriving within 15 minutes. Regional flights count under the airline that sells them. Pick an airline to see its flights.
Delta (incl. SkyWest) 1,579 89% 0.2% 66 min
Alaska (incl. SkyWest, Horizon) 1,934 82% 1.2% 52 min
Southwest 906 78% 0.0% 45 min
American 2 – 0.0% –
United 1 – 0.0% –

Dimmed: fewer than 150 flights in the year, too few to rank.

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.
DL 4041flown by SkyWest SJC 07:20 SEA 09:49 95%
DL 3736flown by SkyWest SJC 11:29 SEA 13:59 92%
AS 1311 SJC 10:19 SEA 12:30 91%
DL 4100flown by SkyWest SJC 20:59 SEA 23:25 88%
DL 3789flown by SkyWest SJC 14:51 SEA 17:14 85%
· · ·
AS 523 SJC 18:00 SEA 20:18 85%
AS 745 SJC 14:34 SEA 16:51 83%
AS 762 SJC 08:00 SEA 10:20 78%
All 23 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.
Delta SJC SEA 2h 25m 89% 0.2% 1,579 Flying now
Alaska SJC SEA 2h 17m 82% 1.2% 1,934 Flying now
Southwest SJC SEA 2h 15m 78% 0.0% 906 Flying now
American SJC SEA – 100%few flights 0.0% 2 Not flying now
United SJC SEA – 100%few flights 0.0% 1 Not 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