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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 3 in 4.

Best time to leave 1–2 pm 86% arrive on time from JFK
Best single flight AS 23 JFK 13:00 → SEA 16:19 · 78% on time Avoid AS 17 JFK 20:23 → SEA 23:55 · 51% 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
JFK
89
84
84
78
73
73
78
65
% 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 1,338 73% 3.1% 59 min
JetBlue 166 71% 4.2% 76 min
Alaska 1,402 69% 3.2% 66 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.
AS 23 JFK 13:00 SEA 16:19 78%
AS 31 JFK 16:29 SEA 20:09 74%
DL 699 JFK 07:00 SEA 10:05 74%
B6 263 JFK 17:32 SEA 21:02 71%
DL 740 JFK 16:50 SEA 20:19 71%
· · ·
AS 21 JFK 07:00 SEA 10:16 68%
DL 688 JFK 19:30 SEA 23:08 68%
AS 17 JFK 20:23 SEA 23:55 51%
All 9 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 JFK SEA 6h 20m 73% 3.1% 1,338 Flying now
JetBlue JFK SEA 6h 28m 71% 4.2% 166 Flying now
Alaska JFK SEA 6h 32m 69% 3.2% 1,402 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