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 11 am and 1 time in 5 at 10 pm.

Nonstops


American	SJU	CLT	4h 03m	87%	1.6%	988	Flying now
Frontier	SJU	CLT	3h 58m	64%	2.2%	93	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


Frontier Details →	SJU 03:10 → MCO 06:10F9 1823	3h 28m Orlando	MCO 09:38 → CLT 11:34F9 1446	8h 22m	99%	89%
American Details →	SJU 00:58 → DFW 05:00AA 2742	3h 34m Dallas-Fort Worth	DFW 08:34 → CLT 12:14AA 1690	11h 16m	99%	86%
United Details →	SJU 02:05 → IAH 06:01UA 2495	1h 24m Houston	IAH 07:25 → CLT 11:02UA 3988 · flown by Mesa	8h 57m	96%	84%
Delta Details →	SJU 06:00 → ATL 09:50DL 1879	2h 30m Atlanta	ATL 12:20 → CLT 13:35DL 2157	7h 35m	100%	82%
United Details →	SJU 01:00 → EWR 05:10UA 2219	2h 15m Newark	EWR 07:25 → CLT 09:31UA 3517 · flown by Republic	8h 31m	94%	82%
United Details →	SJU 07:00 → IAH 10:53UA 1644	1h 17m Houston	IAH 12:10 → CLT 16:02UA 6197 · flown by Mesa	9h 02m	97%	81%
United Details →	SJU 07:40 → ORD 11:53UA 2089	2h 37m Chicago	ORD 14:30 → CLT 17:59UA 5757 · flown by SkyWest	10h 19m	100%	80%
American Details →	SJU 00:59 → ORD 05:04AA 2592	2h 56m Chicago	ORD 08:00 → CLT 11:08AA 3222	10h 09m	99%	80%

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 00m · leaves 07:30 4%

MIA · 1h 00m · leaves 06:00 5%

Afternoon and evening

MIA · 1h 17m · leaves 15:02 12%

ATL · 47m · leaves 17:56 21%

PHL · 57m · leaves 14:25 23%

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.


Southwest WN 3728 SJU 21:25 → MCO American AA 1896 MCO 05:00 → CLT Connection details →	3h 40m	9h 20m	96%	90%
JetBlue B6 452 SJU 06:00 → TPA American AA 2828 TPA 11:56 → CLT Connection details →	2h 57m	7h 53m	100%	88%
JetBlue B6 234 SJU 02:20 → MCO American AA 1525 MCO 08:00 → CLT Connection details →	2h 41m	7h 33m	96%	88%

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