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2,906 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 77%.

Best time to leave 7–8 am 89% arrive on time from SEA
Best single flight DL 429 SEA 07:15 → JFK 15:45 · 88% on time Avoid AS 16 SEA 14:02 → JFK 22:29 · 63% 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).

7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
SEA
92
86
74
79
68
69
75
86
72
82
73
80
% 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 1,337 81% 3.1% 72 min
Alaska 1,403 76% 2.6% 53 min
JetBlue 166 74% 4.8% 139 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 429 SEA 07:15 JFK 15:45 88%
DL 452 SEA 22:20 JFK 06:34 86%
AS 26 SEA 07:00 JFK 15:29 86%
AS 22 SEA 23:15 JFK 07:38 81%
AS 34 SEA 09:29 JFK 17:55 76%
· · ·
B6 264 SEA 22:28 JFK 06:59 74%
DL 415 SEA 11:40 JFK 20:25 74%
AS 16 SEA 14:02 JFK 22:29 63%

All 11 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 26 SEA 07:00 JFK 15:29 5h 29m 363 86% 3.9% 51 min
DL 429 SEA 07:15 JFK 15:45 5h 30m 365 88% 4.1% 112 min
AS 34 SEA 09:29 JFK 17:55 5h 26m 364 76% 2.7% 60 min
DL 415 SEA 11:40 JFK 20:25 5h 45m 363 74% 2.8% 71 min
AS 84 SEA 13:50 JFK 22:21 5h 31m 28 54% 0.0% 44 min
AS 16 SEA 14:02 JFK 22:29 5h 27m 330 63% 2.7% 57 min
DL 461 SEA 16:00 JFK 00:25 5h 25m 55 53% 7.3% 71 min
DL 722 SEA 16:15 JFK 00:41 5h 26m 31 84% 0.0% 74 min
DL 452 SEA 22:20 JFK 06:34 5h 14m 361 86% 3.0% 38 min
B6 264 SEA 22:28 JFK 06:59 5h 21m 166 74% 4.8% 139 min
AS 22 SEA 23:15 JFK 07:38 5h 23m 316 81% 0.9% 38 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.
Delta SEA JFK 5h 26m 81% 3.1% 1,337 Flying now
Alaska SEA JFK 5h 27m 76% 2.6% 1,403 Flying now
JetBlue SEA JFK 5h 21m 74% 4.8% 166 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