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

No clear winner: airlines and hours on this route all land within a few points of 4 in 5 on time.

Nonstops


Delta	SJU	JFK	4h 17m	88%	2.2%	1,104	Flying now
JetBlue	SJU	JFK	4h 04m	74%	3.8%	2,237	Flying now
Frontier	SJU	JFK	4h 14m	80%	2.0%	255	Not 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. Layovers up to 4 hours. Pick a connection for the details.


JetBlue Details →	SJU 02:20 → MCO 05:19B6 234	1h 42m Orlando	MCO 07:01 → JFK 09:49B6 1184	7h 26m	95%	83%
Delta Details →	SJU 06:00 → ATL 09:50DL 1879	1h 20m Atlanta	ATL 11:10 → JFK 13:29DL 2380	7h 29m	98%	78%
American Details →	SJU 06:00 → MIA 08:55AA 2817	1h 00m Miami	MIA 09:55 → JFK 13:04AA 1052	7h 04m	95%	78%
Delta Details →	SJU 07:30 → ATL 11:20DL 1763	2h 39m Atlanta	ATL 13:59 → JFK 16:28DL 1575	8h 58m	99%	74%
Delta Details →	SJU 12:54 → ATL 16:47DL 1757	1h 55m Atlanta	ATL 18:42 → JFK 21:28DL 2398	8h 34m	99%	73%
JetBlue Details →	SJU 05:01 → MCO 08:06B6 1434	3h 09m Orlando	MCO 11:15 → JFK 13:59B6 184	8h 58m	96%	69%
American Details →	SJU 16:38 → MIA 19:34AA 2581	2h 17m Miami	MIA 21:51 → JFK 00:59 +1AA 944	8h 21m	98%	62%
JetBlue Details →	SJU 05:32 → FLL 08:11B6 754	3h 20m Fort Lauderdale	FLL 11:31 → JFK 14:28B6 602	9h 01m	100%	61%
Tight connection: often missed
American Details →	SJU 05:45 → DFW 10:00AA 1847	1h 00m Dallas-Fort Worth	DFW 11:00 → JFK 15:38AA 1135	9h 53m	72%	44%
JetBlue Details →	SJU 08:03 → FLL 10:43B6 1754	48m Fort Lauderdale	FLL 11:31 → JFK 14:28B6 602	6h 30m	61%	38%

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 20m · leaves 06:00 2%

MIA · 1h 00m · leaves 06:00 5%

FLL · 59m · leaves 05:32 12%

Afternoon and evening

DTW · 1h 17m · leaves 14:14 8%

CLT · 1h 15m · leaves 15:40 9%

JAX · 1h 19m · leaves 13:03 10%

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.


American AA 2742 SJU 00:58 → DFW Delta DL 454 DFW 08:15 → JFK Connection details →	3h 15m	12h 01m	99%	84%
JetBlue B6 452 SJU 06:00 → TPA Delta DL 2042 TPA 11:08 → JFK Connection details →	2h 09m	7h 59m	97%	81%
JetBlue B6 234 SJU 02:20 → MCO Delta DL 2693 MCO 07:40 → JFK Connection details →	2h 21m	8h 00m	94%	81%

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