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 4 in 5 on time.

Nonstops


Delta	BUF	JFK	1h 38m	83%	6.0%	1,415	Flying now
JetBlue	BUF	JFK	1h 32m	78%	5.6%	1,217	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 →	BUF 06:00 → ATL 08:10DL 2664	1h 30m Atlanta	ATL 09:40 → JFK 12:00DL 1034	5h 56m	95%	83%
Delta Details →	BUF 06:29 → DTW 07:42DL 2898	2h 28m Detroit	DTW 10:10 → JFK 11:59DL 2751	5h 30m	98%	83%
American Details →	BUF 07:15 → BOS 08:51AA 4788 · flown by Republic	3h 30m Boston	BOS 12:21 → JFK 13:50AA 4366 · flown by Republic	6h 35m	100%	76%
American Details →	BUF 08:08 → ORD 09:10AA 2112	1h 50m Chicago	ORD 11:00 → JFK 14:38AA 4356 · flown by Republic	6h 30m	92%	73%
American Details →	BUF 06:01 → CLT 08:01AA 1204	1h 26m Charlotte	CLT 09:27 → JFK 11:29AA 374	5h 28m	96%	71%
Delta Details →	BUF 12:04 → DTW 13:23DL 3636 · flown by SkyWest	2h 55m Detroit	DTW 16:18 → JFK 18:29DL 2934	6h 25m	94%	71%
Delta Details →	BUF 12:14 → ATL 14:23DL 1384	2h 20m Atlanta	ATL 16:43 → JFK 19:29DL 2378	7h 15m	98%	66%
JetBlue Details →	BUF 07:35 → MCO 10:15B6 85	1h 00m Orlando	MCO 11:15 → JFK 13:59B6 184	6h 24m	85%	61%
Tight connection: often missed
American Details →	BUF 17:25 → DCA 18:59AA 5106 · flown by PSA	59m Washington	DCA 19:58 → JFK 21:30AA 4474 · flown by Republic	4h 05m	41%	13%

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

BOS · 1h 15m · leaves 06:00 14%

MCO · 1h 00m · leaves 07:35 15%

Afternoon and evening

BOS · 1h 07m · leaves 13:31 16%

ATL · 1h 05m · leaves 17:12 18%

DCA · 59m · leaves 17:25 59%

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 1204 BUF 06:01 → CLT Delta DL 5052 CLT 10:01 → JFK Connection details →	2h 00m	5h 58m	96%	79%
American AA 1195 BUF 06:00 → ORD JetBlue B6 906 ORD 09:40 → JFK Connection details →	2h 37m	6h 59m	95%	77%
United UA 543 BUF 07:00 → ORD American AA 4356 ORD 11:00 → JFK Connection details →	3h 01m	7h 38m	97%	76%

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