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, one ticket

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 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%
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%
Delta Details →	JFK 07:00 → LAX 10:00DL 742	2h 57m Los Angeles	LAX 12:57 → SJC 14:19DL 3842 · flown by SkyWest	10h 19m	97%	86%
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 Details →	JFK 11:30 → SEA 14:50DL 1719	3h 00m Seattle	SEA 17:50 → SJC 20:12DL 4100 · flown by SkyWest	11h 42m	96%	80%
Delta Details →	JFK 13:40 → LAX 16:38DL 747	1h 38m Los Angeles	LAX 18:16 → SJC 19:32DL 3883 · flown by SkyWest	8h 55m	91%	79%
Delta Details →	JFK 15:00 → LAX 18:08DL 738	2h 51m Los Angeles	LAX 20:59 → SJC 22:16DL 3073	10h 16m	98%	78%
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.


Delta DL 1574 JFK 08:30 → PDX Alaska AS 3210 PDX 14:30 → SJC Connection details →	2h 56m	10h 55m	97%	93%
JetBlue B6 323 JFK 08:29 → LAX Delta DL 3822 LAX 14:32 → SJC Connection details →	3h 07m	10h 17m	98%	91%
JetBlue B6 411 JFK 06:40 → LAS Southwest WN 1242 LAS 12:10 → SJC Connection details →	2h 59m	10h 05m	99%	88%

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