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, one ticket

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.


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%
American Details →	ACK 12:56 → PHL 14:40AA 4735 · flown by Republic	2h 50m Philadelphia	PHL 17:30 → BOS 18:57AA 1776	6h 01m	93%	57%
American Details →	ACK 10:45 → DCA 12:32AA 4543 · flown by Republic	2h 27m Washington	DCA 14:59 → BOS 16:42AA 1557	5h 57m	93%	53%
JetBlue Details →	ACK 12:03 → JFK 13:09B6 92	2h 46m New York	JFK 15:55 → BOS 17:22B6 618	5h 19m	97%	50%
American Details →	ACK 14:32 → LGA 16:00AA 4546 · flown by Republic	1h 59m New York	LGA 17:59 → BOS 19:23AA 4374 · flown by Republic	4h 52m	84%	50%
United Details →	ACK 15:44 → EWR 17:30UA 4494 · flown by GoJet	2h 55m Newark	EWR 20:25 → BOS 21:53UA 2058	6h 09m	89%	49%
United Details →	ACK 10:53 → EWR 12:39UA 4182 · flown by GoJet	2h 43m Newark	EWR 15:22 → BOS 16:38UA 1536	5h 45m	93%	47%
American Details →	ACK 17:10 → DCA 18:55AA 4553 · flown by Republic	1h 45m Washington	DCA 20:40 → BOS 22:19AA 4382 · flown by Republic	5h 11m	81%	44%
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.


American AA 4735 ACK 12:56 → PHL Delta DL 5706 PHL 17:35 → BOS Connection details →	2h 55m	6h 11m	93%	59%
JetBlue B6 192 ACK 16:30 → JFK Delta DL 2639 JFK 21:00 → BOS Connection details →	3h 20m	6h 11m	95%	57%
American AA 4543 ACK 10:45 → DCA Delta DL 5600 DCA 15:15 → BOS Connection details →	2h 43m	6h 19m	93%	54%

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