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 70-minute layover misses 3% of the time at 8 am and 1 time in 3 at 8 pm.

Nonstops


JetBlue	PHL	SJU	3h 52m	73%	2.3%	128	Flying now
American	PHL	SJU	4h 01m	71%	1.9%	732	Flying now
Frontier	PHL	SJU	4h 00m	57%	3.4%	887	Flying now
Spirit	PHL	SJU	3h 48m	62%	8.6%	185	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 →	PHL 06:00 → MIA 08:56AA 1252	2h 21m Miami	MIA 11:17 → SJU 14:12AA 2584	8h 12m	97%	87%
American Details →	PHL 06:00 → CLT 07:53AA 3139	3h 10m Charlotte	CLT 11:03 → SJU 14:50AA 783	8h 50m	99%	82%
United Details →	PHL 06:10 → IAD 07:19UA 3693 · flown by Republic	1h 15m Dulles	IAD 08:34 → SJU 12:34UA 2021	6h 24m	97%	80%
Frontier Details →	PHL 05:26 → MCO 07:55F9 2415	2h 22m Orlando	MCO 10:17 → SJU 13:16F9 2250	7h 50m	94%	80%
American Details →	PHL 08:15 → MIA 11:12AA 2184	1h 51m Miami	MIA 13:03 → SJU 15:47AA 2581	7h 32m	97%	79%
Delta Details →	PHL 08:05 → ATL 10:12DL 1180	2h 54m Atlanta	ATL 13:06 → SJU 16:46DL 1946	8h 41m	97%	77%
United Details →	PHL 06:15 → IAH 08:44UA 584	1h 19m Houston	IAH 10:03 → SJU 15:42UA 1192	9h 27m	97%	76%
Southwest Details →	PHL 13:45 → MCO 16:15WN 3222	2h 10m Orlando	MCO 18:25 → SJU 21:30WN 2706	7h 45m	98%	75%
Tight connection: often missed
Frontier Details →	PHL 10:11 → MCO 12:56F9 2507	1h 01m Orlando	MCO 13:57 → SJU 16:59F9 1824	6h 49m	70%	52%
American Details →	PHL 15:52 → CLT 17:57AA 3152	1h 04m Charlotte	CLT 19:01 → SJU 22:45AA 2830	6h 59m	74%	49%
Frontier Details →	PHL 17:32 → MIA 20:28F9 1203	1h 05m Miami	MIA 21:33 → SJU 00:28 +1F9 3378	6h 47m	67%	46%

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

IAH · 1h 19m · leaves 06:15 3%

IAD · 1h 15m · leaves 06:10 3%

ORD · 1h 19m · leaves 06:00 3%

Afternoon and evening

CLT · 1h 04m · leaves 15:52 26%

MIA · 1h 05m · leaves 17:32 33%

MCO · 55m · leaves 12:54 39%

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 1927 PHL 08:57 → IAH United UA 701 IAH 15:03 → SJU Connection details →	3h 22m	11h 41m	97%	88%
American AA 2093 PHL 07:00 → MCO Southwest WN 1465 MCO 12:10 → SJU Connection details →	2h 26m	8h 05m	98%	85%
Frontier F9 2415 PHL 05:26 → MCO JetBlue B6 133 MCO 11:02 → SJU Connection details →	3h 07m	8h 38m	94%	79%

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