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

No clear winner: JetBlue’s PVD → SJU flights land within a few points of 82% on time whatever the hour.

Nonstops (seasonal or thin)


JetBlue	PVD	SJU	3h 46m	82%	1.7%	300	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.


Southwest Details →	PVD 07:00 → MCO 09:45WN 4869	2h 25m Orlando	MCO 12:10 → SJU 15:05WN 1465	8h 05m	100%	88%
American Details →	PVD 06:03 → CLT 08:15AA 1585	2h 48m Charlotte	CLT 11:03 → SJU 14:50AA 783	8h 47m	97%	78%
United Details →	PVD 05:50 → IAD 07:29UA 6192 · flown by Mesa	1h 05m Dulles	IAD 08:34 → SJU 12:34UA 2021	6h 44m	96%	78%
Delta Details →	PVD 08:41 → ATL 11:17DL 2840	1h 49m Atlanta	ATL 13:06 → SJU 16:46DL 1946	8h 05m	96%	75%
American Details →	PVD 06:16 → PHL 07:40AA 1008	1h 48m Philadelphia	PHL 09:28 → SJU 13:33AA 903	7h 17m	100%	74%
JetBlue Details →	PVD 06:00 → JFK 07:04B6 1129	1h 25m New York	JFK 08:29 → SJU 12:27B6 1603	6h 27m	98%	70%
United Details →	PVD 06:00 → ORD 08:00UA 5786 · flown by SkyWest	49m Chicago	ORD 08:49 → SJU 14:44UA 1996	8h 44m	88%	70%
Delta Details →	PVD 06:00 → ATL 08:34DL 1023	1h 11m Atlanta	ATL 09:45 → SJU 13:31DL 1882	7h 31m	93%	69%
Tight connection: often missed
United Details →	PVD 14:46 → IAD 16:34UA 6159 · flown by Mesa	50m Dulles	IAD 17:24 → SJU 21:24UA 2025	6h 38m	72%	51%
Southwest Details →	PVD 18:35 → MCO 21:30WN 284	55m Orlando	MCO 22:25 → SJU 01:20 +1WN 2708	6h 48m	31%	7%

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

IAD · 1h 05m · leaves 05:50 4%

ATL · 1h 11m · leaves 06:00 7%

ORD · 49m · leaves 06:00 12%

Afternoon and evening

ATL · 53m · leaves 13:27 20%

BWI · 1h 20m · leaves 17:20 20%

IAD · 50m · leaves 14:46 28%

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 1076 PVD 07:15 → MCO Southwest WN 1465 MCO 12:10 → SJU Connection details →	1h 58m	7h 50m	93%	80%
Southwest WN 4869 PVD 07:00 → MCO JetBlue B6 1033 MCO 12:25 → SJU Connection details →	2h 40m	8h 25m	100%	72%
Southwest WN 1458 PVD 17:15 → MCO Frontier F9 4726 MCO 23:17 → SJU Connection details →	3h 07m	8h 56m	91%	66%

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