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 72% on time.

Nonstops


JetBlue	SJU	PHL	4h 01m	94%	2.3%	128	Flying now
American	SJU	PHL	4h 13m	81%	2.6%	732	Flying now
Frontier	SJU	PHL	4h 07m	63%	3.1%	889	Flying now
Spirit	SJU	PHL	4h 10m	66%	8.6%	185	Not flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


American Details →	SJU 00:58 → DFW 05:00AA 2742	3h 40m Dallas-Fort Worth	DFW 08:40 → PHL 13:02AA 2128	12h 04m	99%	86%
United Details →	SJU 02:05 → IAH 06:01UA 2495	1h 30m Houston	IAH 07:31 → PHL 11:58UA 2642	9h 53m	96%	85%
United Details →	SJU 07:20 → IAD 11:21UA 2022	1h 34m Dulles	IAD 12:55 → PHL 14:10UA 3541 · flown by Republic	6h 50m	99%	85%
Frontier Details →	SJU 03:10 → MCO 06:10F9 1823	2h 48m Orlando	MCO 08:58 → PHL 11:32F9 1542	8h 24m	99%	82%
Delta Details →	SJU 06:00 → ATL 09:50DL 1879	1h 31m Atlanta	ATL 11:21 → PHL 13:24DL 2279	7h 26m	99%	82%
American Details →	SJU 00:59 → ORD 05:04AA 2592	3h 25m Chicago	ORD 08:29 → PHL 11:41AA 471	10h 42m	99%	77%
Delta Details →	SJU 14:14 → DTW 18:53DL 1913	2h 42m Detroit	DTW 21:35 → PHL 23:17DL 2402	9h 03m	99%	77%
American Details →	SJU 16:38 → MIA 19:34AA 2581	2h 30m Miami	MIA 22:04 → PHL 00:55 +1AA 2188	8h 17m	99%	74%

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.

Afternoon and evening

IAD · 1h 14m · leaves 16:55 9%

ATL · 1h 01m · leaves 17:56 12%

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.


JetBlue B6 234 SJU 02:20 → MCO American AA 629 MCO 08:40 → PHL Connection details →	3h 21m	8h 56m	97%	88%
American AA 2592 SJU 00:59 → ORD United UA 2038 ORD 07:15 → PHL Connection details →	2h 11m	9h 31m	97%	85%
JetBlue B6 452 SJU 06:00 → TPA American AA 2807 TPA 10:48 → PHL Connection details →	1h 49m	7h 27m	97%	85%

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