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 72% on time.

Nonstops


Delta	MIA	JFK	3h 07m	73%	3.3%	1,621	Flying now
American	MIA	JFK	3h 02m	71%	2.6%	2,665	Flying now
Frontier	MIA	JFK	3h 07m	81%	2.0%	244	Not flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


Delta Details →	MIA 06:00 → ATL 08:05DL 1249	1h 35m Atlanta	ATL 09:40 → JFK 12:00DL 1034	5h 56m	96%	84%
American Details →	MIA 06:42 → BOS 10:06AA 815	2h 15m Boston	BOS 12:21 → JFK 13:50AA 4366 · flown by Republic	7h 08m	100%	78%
Delta Details →	MIA 07:10 → ATL 09:15DL 1211	1h 55m Atlanta	ATL 11:10 → JFK 13:29DL 2380	6h 19m	98%	77%
American Details →	MIA 06:40 → ORD 09:08AA 581	1h 52m Chicago	ORD 11:00 → JFK 14:38AA 4356 · flown by Republic	7h 58m	97%	77%
Delta Details →	MIA 08:17 → ATL 10:20DL 1261	3h 39m Atlanta	ATL 13:59 → JFK 16:28DL 1575	8h 11m	99%	75%
American Details →	MIA 05:25 → DFW 07:40AA 1226	2h 10m Dallas-Fort Worth	DFW 09:50 → JFK 14:34AA 1766	9h 09m	98%	70%
Delta Details →	MIA 14:09 → ATL 16:15DL 1332	2h 27m Atlanta	ATL 18:42 → JFK 21:28DL 2398	7h 19m	94%	69%
American Details →	MIA 06:21 → CLT 08:35AA 2187	3h 10m Charlotte	CLT 11:45 → JFK 13:47AA 2812	7h 26m	98%	68%
Tight connection: often missed
American Details →	MIA 17:23 → CLT 19:45AA 400	1h 09m Charlotte	CLT 20:54 → JFK 23:00AA 1727	5h 37m	74%	44%
American Details →	MIA 10:05 → DFW 12:17AA 3081	53m Dallas-Fort Worth	DFW 13:10 → JFK 17:56AA 1049	7h 51m	65%	35%
American Details →	MIA 14:28 → DFW 16:50AA 2762	53m Dallas-Fort Worth	DFW 17:43 → JFK 22:30AA 1203	8h 06m	63%	27%

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

CLT · 51m · leaves 08:40 6%

AUS · 57m · leaves 08:05 12%

ATL · 50m · leaves 08:17 13%

Afternoon and evening

CLT · 1h 09m · leaves 17:23 26%

DFW · 53m · leaves 14:28 37%

RDU · 57m · leaves 16:47 56%

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 2582 MIA 08:20 → SJU Delta DL 1966 SJU 13:10 → JFK Connection details →	2h 06m	8h 59m	97%	81%
American AA 2778 MIA 07:00 → TPA Delta DL 2042 TPA 11:08 → JFK Connection details →	3h 00m	6h 59m	96%	80%
American AA 2168 MIA 08:00 → MSY JetBlue B6 176 MSY 12:19 → JFK Connection details →	3h 01m	8h 35m	100%	78%

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