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 50-minute layover misses 22% of the time at 11 am and 38% of the time at 10 pm.

Nonstops (none in the current schedule)


American	JFK	SJC	–	100%few flights	0.0%	3	Not flying now
Delta	JFK	SJC	–	100%few flights	0.0%	2	Not flying now

Best connections, any airlines

Most reliable Quickest (80%+ on time)

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


Delta + Alaskatwo ticketsDetails →	JFK 08:30 → PDX 11:34DL 1574	2h 56m Portland	PDX 14:30 → SJC 16:25AS 3210 · flown by SkyWest	10h 55m	97%	93%
Delta Details →	JFK 09:00 → LAX 12:00DL 773	2h 32m Los Angeles	LAX 14:32 → SJC 15:46DL 3822 · flown by SkyWest	9h 46m	98%	92%
JetBlue + Southwesttwo ticketsDetails →	JFK 06:40 → LAS 09:11B6 411	2h 59m Las Vegas	LAS 12:10 → SJC 13:45WN 1242	10h 05m	99%	88%
Delta Details →	JFK 06:00 → SLC 09:03DL 892	2h 37m Salt Lake City	SLC 11:40 → SJC 12:38DL 1254	9h 38m	99%	88%
American + Deltatwo ticketsDetails →	JFK 07:05 → LAX 10:07AA 33	2h 50m Los Angeles	LAX 12:57 → SJC 14:19DL 3842 · flown by SkyWest	10h 14m	97%	87%
Delta Details →	JFK 11:00 → LAX 13:54DL 767	2h 06m Los Angeles	LAX 16:00 → SJC 17:17DL 1438	9h 17m	98%	82%
Delta Details →	JFK 06:00 → ATL 08:24DL 2286	1h 16m Atlanta	ATL 09:40 → SJC 11:36DL 809	8h 36m	93%	82%
Delta + Southwesttwo ticketsDetails →	JFK 07:00 → LAS 09:25DL 607	3h 20m Las Vegas	LAS 12:45 → SJC 14:20WN 4223	10h 20m	98%	81%
Tight connection: often missed
Alaska Details →	JFK 17:08 → PDX 20:33AS 19	57m Portland	PDX 21:30 → SJC 23:21AS 678	9h 13m	71%	56%
Delta Details →	JFK 18:29 → SLC 21:58DL 863	47m Salt Lake City	SLC 22:45 → SJC 23:39DL 1272	8h 10m	62%	50%
American Details →	JFK 17:25 → DFW 20:30AA 606	54m Dallas-Fort Worth	DFW 21:24 → SJC 22:58AA 1940	8h 33m	54%	29%

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

ATL · 1h 16m · leaves 06:00 7%

DFW · 49m · leaves 08:15 22%

PHX · 46m · leaves 07:02 28%

Afternoon and evening

PDX · 57m · leaves 17:08 29%

SLC · 47m · leaves 18:29 38%

DFW · 54m · leaves 17:25 46%

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.

The table above includes two-ticket connections (marked “two tickets”), held to the 90-minute minimum. One ticket only →

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