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 7 in 10 on time.

Nonstops (seasonal or thin)


JetBlue	SJU	STT	37m	71%	0.6%	351	Flying now
Frontier	SJU	STT	–	50%few flights	0.0%	6	Not flying now

Best connections, any airlines

Most reliable Quickest (80%+ on time)

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


American Details →	SJU 06:00 → MIA 08:55AA 2817	1h 12m Miami	MIA 10:07 → STT 12:59AA 2744	6h 59m	98%	85%
United Details →	SJU 02:05 → IAH 06:01UA 2495	3h 51m Houston	IAH 09:52 → STT 15:43UA 1908	13h 38m	100%	82%
Southwest Details →	SJU 05:00 → MCO 08:00WN 3721	2h 50m Orlando	MCO 10:50 → STT 13:50WN 4999	8h 50m	100%	81%
Frontier + Americantwo ticketsDetails →	SJU 07:30 → MIA 10:15F9 3377	2h 53m Miami	MIA 13:08 → STT 16:00AA 2738	8h 30m	92%	77%
Delta Details →	SJU 06:00 → ATL 09:50DL 1879	1h 45m Atlanta	ATL 11:35 → STT 15:21DL 1883	9h 21m	99%	71%

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

MCO · 1h 20m · leaves 06:25 0%

MIA · 1h 12m · leaves 06:00 2%

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.

The table above includes two-ticket connections (marked “two tickets”), held to the 90-minute minimum. One ticket only →

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