Itineraries flown on 20+ days in the Jun 6 – Jul 31, 2026 schedule · each leg’s record Aug 2025 – Jul 2026

Connect in the morning. The same one-hour layover misses 4% of the time at 10 am and 16% of the time at 11 pm.

Nonstops


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

Best connections, one ticket

Most reliable Quickest (80%+ on time)

Ranked by chance you reach New York on time. Total trip = scheduled departure to arrival, layover included (New York is 3 h ahead of Seattle). Layovers up to 4 hours. Pick a connection for the details.


Alaska Details →	SEA 14:47 → ANC 17:26AS 660	2h 33m Anchorage	ANC 19:59 → JFK 07:13 +1AS 1535	13h 26m	100%	92%
Delta Details →	SEA 22:58 → ATL 06:45DL 409	2h 55m Atlanta	ATL 09:40 → JFK 12:00 +1DL 1034	9h 58m	100%	90%
Alaska Details →	SEA 16:36 → SFO 18:48AS 1385	2h 42m San Francisco	SFO 21:30 → JFK 06:20 +1AS 211	10h 44m	100%	89%
Delta Details →	SEA 18:55 → PDX 20:02DL 3923 · flown by SkyWest	2h 33m Portland	PDX 22:35 → JFK 06:55 +1DL 2139	9h 00m	98%	89%
Delta Details →	SEA 21:45 → ATL 05:36DL 567	2h 08m Atlanta	ATL 07:44 → JFK 10:00 +1DL 2420	9h 15m	98%	87%
Delta Details →	SEA 17:59 → SLC 21:09DL 1165	2h 50m Salt Lake City	SLC 23:59 → JFK 06:23 +1DL 705	9h 24m	98%	85%
Delta Details →	SEA 23:10 → DTW 06:27DL 810	3h 43m Detroit	DTW 10:10 → JFK 11:59 +1DL 2751	9h 49m	99%	85%
American Details →	SEA 20:45 → MIA 05:37AA 1471	2h 45m Miami	MIA 08:22 → JFK 11:30 +1AA 1051	11h 45m	97%	84%
Tight connection: often missed
Alaska Details →	SEA 17:36 → SFO 19:52AS 791	1h 38m San Francisco	SFO 21:30 → JFK 06:20 +1AS 211	9h 44m	74%	66%
Delta Details →	SEA 17:30 → LAX 20:15DL 2861	55m Los Angeles	LAX 21:10 → JFK 05:25 +1DL 960	8h 55m	75%	62%
Delta Details →	SEA 09:45 → SFO 12:08DL 1412	52m San Francisco	SFO 13:00 → JFK 21:45DL 691	9h 00m	53%	25%

Same layover, different day-part

How often the first flight arrives too late to connect (45 min minimum), for one-ticket layovers of 45–80 minutes.

Morning

LAX · 1h 15m · leaves 07:15 4%

PDX · 58m · leaves 08:45 12%

Afternoon and evening

PHX · 1h 11m · leaves 18:30 16%

SLC · 1h 04m · leaves 19:50 16%

LAX · 55m · leaves 17:30 25%

Delays build through the day, so an afternoon first leg eats the layover. A short connection is fine early in the morning and a gamble later on.

Mixing airlines

One ticketMiss it and the airline rebooks you; bags go through. 45 min is enough.

Separate ticketsMiss it and you buy a new ticket. Re-check bags, clear security again: we require 90 min.


Delta DL 2955 SEA 16:20 → LAS American AA 2855 LAS 22:47 → JFK Connection details →	3h 50m	11h 40m	100%	94%
Alaska AS 602 SEA 16:26 → DEN Delta DL 758 DEN 23:59 → JFK Connection details →	3h 49m	10h 22m	99%	92%
Alaska AS 77 SEA 22:37 → PIT American AA 4587 PIT 08:51 → JFK Connection details →	2h 41m	8h 53m	100%	91%

Rank all connections, any airlines →

Regional partners count as the airline that sells them: SkyWest flying Delta Connection is one Delta ticket.

How these are worked out. Makes the connection: share of the last year’s flights where the first flight arrived with at least 45 minutes to spare (90 on separate tickets). Arrives on time: first flight not cancelled × connection made × second flight not cancelled and arriving within 15 minutes. Not yet counted: the second flight also leaving late (which helps), gate-to-gate distance at the hub, and rebooking after a missed connection.

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