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 90-minute layover misses 2% of the time at 7 am and 23% of the time at 10 pm.

Nonstops


American	CLT	SJU	3h 39m	80%	1.3%	988	Flying now
Frontier	CLT	SJU	3h 55m	52%	3.2%	93	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 →	CLT 05:15 → MIA 07:20AA 1165	3h 57m Miami	MIA 11:17 → SJU 14:12AA 2584	8h 57m	100%	92%
United Details →	CLT 11:48 → IAH 13:34UA 6236 · flown by Mesa	1h 29m Houston	IAH 15:03 → SJU 20:38UA 701	8h 50m	95%	85%
Delta Details →	CLT 05:30 → ATL 06:42DL 3186	1h 24m Atlanta	ATL 08:06 → SJU 11:44DL 1757	6h 14m	98%	82%
American Details →	CLT 07:05 → MIA 09:12AA 770	3h 51m Miami	MIA 13:03 → SJU 15:47AA 2581	8h 42m	98%	81%
Delta Details →	CLT 08:01 → ATL 09:16DL 3156	3h 50m Atlanta	ATL 13:06 → SJU 16:46DL 1946	8h 45m	100%	81%
American Details →	CLT 05:45 → PHL 07:27AA 2727	2h 01m Philadelphia	PHL 09:28 → SJU 13:33AA 903	7h 48m	97%	79%
United Details →	CLT 10:35 → ORD 11:59UA 4680 · flown by SkyWest	2h 39m Chicago	ORD 14:38 → SJU 20:34UA 695	9h 59m	100%	77%
United Details →	CLT 06:00 → IAD 07:29UA 6279 · flown by Mesa	1h 05m Dulles	IAD 08:34 → SJU 12:34UA 2021	6h 34m	94%	77%
Tight connection: often missed
American Details →	CLT 15:25 → ORD 16:46AA 2907	1h 14m Chicago	ORD 18:00 → SJU 23:58AA 3192	8h 33m	61%	34%
American Details →	CLT 19:52 → DFW 21:44AA 1698	1h 03m Dallas-Fort Worth	DFW 22:47 → SJU 04:39 +1AA 514	8h 47m	53%	25%

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 06:00 6%

IAH · 1h 13m · leaves 07:09 6%

MIA · 1h 00m · leaves 05:15 7%

Afternoon and evening

IAD · 54m · leaves 14:53 24%

ORD · 1h 14m · leaves 15:25 39%

DFW · 1h 03m · leaves 19:52 47%

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 2084 CLT 07:28 → MCO Southwest WN 1465 MCO 12:10 → SJU Connection details →	2h 57m	7h 37m	98%	86%
American AA 1875 CLT 13:18 → FLL JetBlue B6 553 FLL 19:15 → SJU Connection details →	3h 55m	8h 39m	99%	82%
American AA 2074 CLT 10:09 → MCO Southwest WN 2703 MCO 15:25 → SJU Connection details →	3h 28m	8h 16m	99%	82%

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