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 13% of the time at 10 am and 30% of the time at 6 pm.

Nonstops


Delta	JFK	BUF	1h 41m	82%	6.1%	1,415	Flying now
JetBlue	JFK	BUF	1h 31m	75%	5.2%	1,218	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


American Details →	JFK 05:59 → CLT 07:57AA 2643	3h 13m Charlotte	CLT 11:10 → BUF 12:54AA 1616	6h 56m	98%	85%
JetBlue Details →	JFK 06:29 → BOS 07:46B6 2718	3h 19m Boston	BOS 11:05 → BUF 12:36B6 1215	6h 07m	98%	83%
Delta Details →	JFK 08:40 → ATL 11:14DL 2227	2h 46m Atlanta	ATL 14:00 → BUF 16:06DL 2266	7h 26m	95%	76%
Delta Details →	JFK 11:33 → MSP 13:50DL 2414	1h 32m Minneapolis	MSP 15:22 → BUF 18:27DL 1749	6h 54m	91%	75%
Delta Details →	JFK 15:40 → ATL 18:24DL 1480	3h 25m Atlanta	ATL 21:49 → BUF 23:59DL 2334	8h 19m	95%	71%
American Details →	JFK 06:30 → DCA 07:59AA 4538 · flown by Republic	2h 52m Washington	DCA 10:51 → BUF 12:15AA 5104 · flown by PSA	5h 47m	98%	70%
Delta Details →	JFK 11:00 → ATL 13:33DL 1029	3h 00m Atlanta	ATL 16:33 → BUF 18:41DL 2050	7h 41m	97%	70%
Delta Details →	JFK 16:30 → DTW 18:55DL 2443	3h 55m Detroit	DTW 22:50 → BUF 23:58DL 978	7h 29m	98%	69%
Tight connection: often missed
Delta Details →	JFK 19:29 → DTW 21:56DL 1253	54m Detroit	DTW 22:50 → BUF 23:58DL 978	4h 30m	68%	43%
American Details →	JFK 17:14 → BOS 18:48AA 4346 · flown by Republic	1h 12m Boston	BOS 20:00 → BUF 21:50AA 4616 · flown by Republic	4h 36m	65%	40%
American Details →	JFK 14:42 → DFW 17:44AA 1953	1h 01m Dallas-Fort Worth	DFW 18:45 → BUF 22:50AA 574	8h 08m	70%	38%

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 · 1h 03m · leaves 07:59 13%

Afternoon and evening

DFW · 1h 01m · leaves 14:42 30%

DTW · 54m · leaves 19:29 32%

BOS · 1h 12m · leaves 17:14 35%

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.


Delta DL 5765 JFK 06:00 → BOS JetBlue B6 1215 BOS 11:05 → BUF Connection details →	3h 41m	6h 36m	99%	88%
Delta DL 5733 JFK 09:50 → BOS American AA 4440 BOS 13:55 → BUF Connection details →	2h 40m	5h 54m	95%	82%
Delta DL 5052 JFK 07:10 → CLT American AA 1616 CLT 11:10 → BUF Connection details →	1h 53m	5h 45m	91%	79%

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