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6,679 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

Leave before 9 am: 9 in 10 depart on time. After 4 pm it’s 73%.

Best time to leave 6–7 am 95% arrive on time from SEA
Best single flight AS 79 SEA 07:53 → ANC 10:37 · 90% on time Avoid AS 78 SEA 17:55 → ANC 20:40 · 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).

6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
SEA
93
89
89
81
78
71
75
75
81
79
73
74
73
75
70
73
75
73
% 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
Anchorage flights leaving SEA 10–11 am: 5Close ×
AS 1556 SEA 10:14 ANC 13:00 3h 46m 22 59% 0.0% 47 min
AS 1810 SEA 10:14 ANC 13:00 3h 46m 30 70% 0.0% 31 min
AS 1451 SEA 10:15 ANC 13:05 3h 50m 28 79% 0.0% 60 min
DL 922 SEA 10:35 ANC 13:15 3h 40m 365 80% 0.8% 52 min
AS 433 SEA 10:59 ANC 13:41 3h 42m 50 80% 2.0% 55 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.
Delta 1,614 78% 0.6% 64 min
Alaska (incl. Horizon) 5,004 77% 0.9% 49 min
Hawaiian 61 – 0.0% 44 min

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.
AS 79 SEA 07:53 ANC 10:37 90%
AS 85 SEA 06:03 ANC 08:40 88%
DL 922 SEA 10:35 ANC 13:15 80%
AS 247 SEA 21:59 ANC 00:46 79%
DL 931 SEA 17:30 ANC 20:07 78%
· · ·
DL 928 SEA 13:30 ANC 16:15 73%
AS 83 SEA 11:39 ANC 14:27 72%
AS 78 SEA 17:55 ANC 20:40 72%
All 38 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 SEA ANC 3h 40m 78% 0.6% 1,614 Flying now
Alaska SEA ANC 3h 45m 77% 0.9% 5,004 Flying now
Hawaiian SEA ANC 3h 45m 59% 0.0% 61 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