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 84% on time.

Nonstops (seasonal or thin)


American	BOS	ACK	1h 14m	84%	0.0%	44	Flying now
JetBlue	BOS	ACK	52m	84%	2.9%	240	Flying now

Best connections, any airlines

Most reliable Quickest (80%+ on time)

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


United Details →	BOS 06:05 → EWR 07:29UA 1833	1h 20m Newark	EWR 08:49 → ACK 10:15UA 4497 · flown by GoJet	4h 10m	97%	85%
American Details →	BOS 06:00 → PHL 07:37AA 1146	3h 13m Philadelphia	PHL 10:50 → ACK 12:26AA 4735 · flown by Republic	6h 26m	99%	85%
United Details →	BOS 09:30 → EWR 10:58UA 1307	2h 32m Newark	EWR 13:30 → ACK 14:56UA 4491 · flown by GoJet	5h 26m	97%	80%
Delta Details →	BOS 09:05 → JFK 10:24DL 5720 · flown by Republic	2h 46m New York	JFK 13:10 → ACK 14:39DL 5804 · flown by Republic	5h 34m	99%	79%
American Details →	BOS 08:06 → LGA 09:32AA 4377 · flown by Republic	3h 06m New York	LGA 12:38 → ACK 14:01AA 4546 · flown by Republic	5h 55m	99%	76%
JetBlue Details →	BOS 05:15 → JFK 06:28B6 917	3h 17m New York	JFK 09:45 → ACK 11:12B6 2091	5h 57m	100%	76%
Delta Details →	BOS 06:00 → LGA 07:20DL 5836 · flown by Republic	2h 46m New York	LGA 10:06 → ACK 11:26DL 5712 · flown by Republic	5h 26m	100%	76%
American Details →	BOS 09:37 → PHL 11:12AA 3225	2h 21m Philadelphia	PHL 13:33 → ACK 15:08AA 4545 · flown by Republic	5h 31m	100%	71%
Tight connection: often missed
Delta Details →	BOS 12:00 → LGA 13:18DL 5854 · flown by Republic	1h 02m New York	LGA 14:20 → ACK 15:48DL 5767 · flown by Republic	3h 48m	71%	47%
JetBlue Details →	BOS 13:02 → DCA 14:44B6 855	56m Washington	DCA 15:40 → ACK 17:12B6 2494	4h 10m	61%	35%

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

EWR · 1h 20m · leaves 06:05 3%

PHL · 1h 10m · leaves 08:03 6%

DCA · 46m · leaves 06:00 18%

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