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 73% on time.

Nonstops (seasonal or thin)


JetBlue	STT	SJU	43m	73%	2.2%	542	Flying now
Frontier	STT	SJU	–	50%few flights	0.0%	6	Not flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

Ranked by chance you reach San Juan on time. Total trip = scheduled departure to arrival, layover included. Layovers up to 4 hours. Pick a connection for the details.


American Details →	STT 11:43 → CLT 15:49AA 2431	3h 12m Charlotte	CLT 19:01 → SJU 22:45AA 2830	11h 08m	100%	67%
American Details →	STT 13:49 → MIA 16:50AA 2744	2h 26m Miami	MIA 19:16 → SJU 21:59AA 1364	8h 10m	97%	64%
Delta Details →	STT 13:20 → ATL 17:18DL 1823	1h 27m Atlanta	ATL 18:45 → SJU 22:29DL 1861	9h 09m	89%	58%
Southwest Details →	STT 14:35 → MCO 17:40WN 3995	3h 25m Orlando	MCO 21:05 → SJU 00:10 +1WN 2707	9h 30m	98%	55%
American Details →	STT 14:28 → DFW 19:14AA 2743	3h 33m Dallas-Fort Worth	DFW 22:47 → SJU 04:39 +1AA 514	14h 11m	97%	47%

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 801 STT 11:44 → JFK Delta DL 1859 JFK 19:25 → SJU Connection details →	3h 26m	11h 59m	95%	65%
Southwest WN 3995 STT 14:35 → MCO Frontier F9 1746 MCO 20:25 → SJU Connection details →	2h 45m	8h 54m	96%	63%
American AA 2738 STT 16:50 → MIA Frontier F9 3378 MIA 21:33 → SJU Connection details →	1h 39m	7h 29m	80%	56%

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