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 one-hour layover misses 4% of the time at 10 am and 16% of the time at 10 pm.

Nonstops (seasonal or thin)


JetBlue	SJU	JAX	3h 14m	81%	1.7%	117	Flying now
Frontier	SJU	JAX	3h 25m	78%	2.8%	144	Flying now

Best connections, any airlines

Most reliable Quickest (80%+ on time)

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


United Details →	SJU 02:05 → IAH 06:01UA 2495	1h 34m Houston	IAH 07:35 → JAX 10:56UA 6146 · flown by Mesa	8h 51m	96%	84%
United Details →	SJU 07:00 → IAH 10:53UA 1644	1h 17m Houston	IAH 12:10 → JAX 15:37UA 4048 · flown by Mesa	8h 37m	97%	80%
Delta Details →	SJU 06:00 → ATL 09:50DL 1879	58m Atlanta	ATL 10:48 → JAX 12:00DL 2923	6h 00m	96%	80%
Delta Details →	SJU 07:30 → ATL 11:20DL 1763	2h 37m Atlanta	ATL 13:57 → JAX 15:07DL 2990	7h 38m	99%	79%
Delta + JetBluetwo ticketsDetails →	SJU 07:05 → JFK 11:01DL 1854	2h 58m New York	JFK 13:59 → JAX 16:33B6 677	9h 29m	98%	71%
United Details →	SJU 01:00 → EWR 05:10UA 2219	50m Newark	EWR 06:00 → JAX 08:31UA 1207	7h 31m	78%	70%
Southwest Details →	SJU 05:20 → BWI 09:30WN 3717	2h 05m Baltimore	BWI 11:35 → JAX 13:35WN 970	8h 15m	98%	70%
American Details →	SJU 15:40 → CLT 19:39AA 783	2h 54m Charlotte	CLT 22:33 → JAX 23:59AA 2713	8h 19m	99%	69%
Tight connection: often missed
JetBlue Details →	SJU 09:52 → FLL 12:30B6 2154	50m Fort Lauderdale	FLL 13:20 → JAX 14:40B6 2118	4h 47m	62%	38%
American Details →	SJU 19:14 → MIA 22:05AA 3165	48m Miami	MIA 22:53 → JAX 00:15 +1AA 416	5h 01m	67%	34%

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 17m · leaves 07:00 3%

ATL · 1h 13m · leaves 07:30 3%

EWR · 50m · leaves 01:00 22%

Afternoon and evening

IAH · 1h 09m · leaves 14:55 14%

ATL · 54m · leaves 17:56 16%

MIA · 48m · leaves 19:14 33%

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