Sun, Oct 4 has passed, so this is the 12-month record.

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

No clear winner: American’s STT → MIA flights land within a few points of 82% on time whatever the hour.

Nonstops (seasonal or thin)


American	STT	MIA	3h 13m	82%	1.1%	941	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


United Details →	STT 13:22 → IAH 17:25UA 2208	1h 36m Houston	IAH 19:01 → MIA 22:40UA 1829	9h 18m	95%	73%
Southwest Details →	STT 14:35 → MCO 17:40WN 3995	3h 10m Orlando	MCO 20:50 → MIA 22:05WN 1516	7h 30m	98%	71%
American Details →	STT 11:44 → JFK 15:59AA 801	1h 26m New York	JFK 17:25 → MIA 20:59AA 688	9h 15m	93%	69%
Delta Details →	STT 15:29 → ATL 19:29DL 1889	3h 20m Atlanta	ATL 22:49 → MIA 00:51 +1DL 1589	9h 22m	100%	67%
American Details →	STT 11:39 → JFK 15:59AA 2741	2h 51m New York	JFK 18:50 → MIA 22:22AA 1174	10h 43m	90%	64%
Delta Details →	STT 13:20 → ATL 17:18DL 1823	2h 58m Atlanta	ATL 20:16 → MIA 22:17DL 1588	8h 57m	96%	62%
American Details →	STT 11:43 → CLT 15:49AA 2431	2h 11m Charlotte	CLT 18:00 → MIA 20:21AA 488	8h 38m	97%	60%
Delta Details →	STT 15:33 → ATL 19:30DL 1883	2h 07m Atlanta	ATL 21:37 → MIA 23:39DL 1234	8h 06m	95%	60%
Tight connection: often missed
Delta Details →	STT 15:33 → ATL 19:30DL 1883	46m Atlanta	ATL 20:16 → MIA 22:17DL 1588	6h 44m	73%	46%
American Details →	STT 11:52 → CLT 15:54AA 797	46m Charlotte	CLT 16:40 → MIA 18:57AA 2231	7h 05m	72%	46%

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.

Afternoon and evening

DFW · 51m · leaves 14:28 23%

ATL · 46m · leaves 15:33 27%

CLT · 46m · leaves 11:52 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 435 STT 16:07 → SJU American AA 3165 SJU 19:14 → MIA Connection details →	2h 25m	5h 58m	92%	66%
American AA 801 STT 11:44 → JFK Delta DL 1428 JFK 19:52 → MIA Connection details →	3h 53m	11h 49m	95%	64%
United UA 2208 STT 13:22 → IAH Frontier F9 1068 IAH 20:37 → MIA Connection details →	3h 12m	11h 09m	99%	62%

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