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7,466 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

Leave before 9 am: 92% depart on time. After 4 pm it’s 4 in 5.

Best time to leave 8–9 am 91% arrive on time from SEA
Best single flight DL 1628 SEA 07:15 → LAX 10:05 · 93% on time Avoid AS 1390 SEA 21:18 → LAX 00:05 · 72% 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
SEA
80
91
93
92
87
86
75
87
85
80
80
83
82
82
80
74
74
% 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
Los Angeles flights leaving SEA 6–7 am: 4Close ×
AS 485 SEA 06:00 LAX 08:45 2h 45m 24 100% 4.2% –
UA 1692 SEA 06:00 LAX 08:44 2h 44m 27 81% 0.0% 26 min
AS 505 SEA 06:03 LAX 08:47 2h 44m 337 84% 0.3% 42 min
UA 1635 SEA 06:06 LAX 08:50 2h 44m 25 92% 0.0% 119 min

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) 941 92% 0.5% 77 min
Delta 2,226 84% 0.6% 57 min
Alaska (incl. SkyWest, Horizon) 3,306 82% 0.9% 44 min
Frontier 295 81% 3.1% 61 min
American (incl. SkyWest) 698 80% 0.6% 145 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.
DL 1628 SEA 07:15 LAX 10:05 93%
AS 1306 SEA 08:00 LAX 10:56 91%
AS 1411 SEA 16:28 LAX 19:13 89%
DL 2914 SEA 12:35 LAX 15:26 86%
AA 4896flown by SkyWest SEA 07:00 LAX 10:02 86%
· · ·
DL 2861 SEA 17:30 LAX 20:15 76%
AS 1338 SEA 20:20 LAX 23:10 74%
AS 1390 SEA 21:18 LAX 00:05 72%
All 33 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 SEA LAX 2h 52m 92% 0.5% 941 Flying now
Delta SEA LAX 2h 45m 84% 0.6% 2,226 Flying now
Alaska SEA LAX 2h 48m 82% 0.9% 3,306 Flying now
Frontier SEA LAX 2h 58m 81% 3.1% 295 Flying now
American SEA LAX 2h 58m 80% 0.6% 698 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