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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
New York flights leaving SEA 2–3 pm: 1Close ×
AS 16 SEA 14:02 JFK 22:29 5h 27m 330 63% 2.7% 57 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 1,337 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 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 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