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 (seasonal or thin)


American	ACK	BOS	1h 12m	89%	0.0%	44	Flying now
JetBlue	ACK	BOS	54m	68%	3.8%	240	Flying now

Best connections, any airlines

Most reliable Quickest (80%+ on time)

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


American + Deltatwo ticketsDetails →	ACK 12:56 → PHL 14:40AA 4735 · flown by Republic	2h 55m Philadelphia	PHL 17:35 → BOS 19:07DL 5706 · flown by Republic	6h 11m	93%	59%
Delta Details →	ACK 12:06 → LGA 13:29DL 5712 · flown by Republic	3h 31m New York	LGA 17:00 → BOS 18:33DL 5725 · flown by Republic	6h 27m	94%	58%
JetBlue + Deltatwo ticketsDetails →	ACK 16:30 → JFK 17:40B6 192	3h 20m New York	JFK 21:00 → BOS 22:41DL 2639	6h 11m	95%	57%
American + Deltatwo ticketsDetails →	ACK 10:45 → DCA 12:32AA 4543 · flown by Republic	2h 43m Washington	DCA 15:15 → BOS 17:02DL 5600 · flown by Republic	6h 19m	93%	54%
United + Deltatwo ticketsDetails →	ACK 10:53 → EWR 12:39UA 4182 · flown by GoJet	2h 31m Newark	EWR 15:10 → BOS 16:40DL 5829 · flown by Republic	5h 47m	90%	53%
JetBlue + Deltatwo ticketsDetails →	ACK 11:15 → LGA 12:31B6 831	2h 29m New York	LGA 15:00 → BOS 16:31DL 5727 · flown by Republic	5h 16m	90%	53%
American + Deltatwo ticketsDetails →	ACK 15:38 → PHL 17:28AA 4545 · flown by Republic	2h 31m Philadelphia	PHL 19:59 → BOS 21:49DL 5714 · flown by Republic	6h 11m	90%	51%
JetBlue Details →	ACK 12:03 → JFK 13:09B6 92	2h 46m New York	JFK 15:55 → BOS 17:22B6 618	5h 19m	97%	50%
Tight connection: often missed
JetBlue Details →	ACK 10:52 → DCA 12:29B6 2493	56m Washington	DCA 13:25 → BOS 15:01B6 1254	4h 08m	73%	45%
Delta Details →	ACK 16:40 → LGA 18:04DL 5767 · flown by Republic	55m New York	LGA 18:59 → BOS 20:30DL 5746 · flown by Republic	3h 49m	72%	32%
Delta Details →	ACK 15:20 → JFK 16:40DL 5804 · flown by Republic	50m New York	JFK 17:30 → BOS 19:14DL 5798 · flown by Republic	3h 54m	56%	32%

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

LGA · 55m · leaves 16:40 28%

JFK · 50m · leaves 15:20 44%

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.

The table above includes two-ticket connections (marked “two tickets”), held to the 90-minute minimum. One ticket only →

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