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 3 in 4 on time.

Nonstops (seasonal or thin)


American	DCA	ACK	1h 41m	80%	2.5%	163	Flying now
JetBlue	DCA	ACK	1h 32m	65%	6.7%	120	Flying now

Best connections, one ticket

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 →	DCA 06:00 → EWR 07:19UA 4167 · flown by GoJet	1h 30m Newark	EWR 08:49 → ACK 10:15UA 4497 · flown by GoJet	4h 15m	96%	85%
United Details →	DCA 08:30 → EWR 09:52UA 4430 · flown by GoJet	3h 38m Newark	EWR 13:30 → ACK 14:56UA 4491 · flown by GoJet	6h 26m	98%	81%
American Details →	DCA 06:55 → BOS 08:34AA 1605	1h 01m Boston	BOS 09:35 → ACK 10:49AA 4708 · flown by Republic	3h 54m	98%	78%
JetBlue Details →	DCA 08:50 → BOS 10:27B6 554	1h 45m Boston	BOS 12:12 → ACK 13:03B6 1352	4h 13m	95%	75%
JetBlue Details →	DCA 06:15 → JFK 07:27B6 254	2h 18m New York	JFK 09:45 → ACK 11:12B6 2091	4h 57m	96%	73%
Delta Details →	DCA 06:20 → LGA 07:34DL 1172	2h 32m New York	LGA 10:06 → ACK 11:26DL 5712 · flown by Republic	5h 06m	96%	71%
American Details →	DCA 09:59 → LGA 11:25AA 4491 · flown by Republic	1h 13m New York	LGA 12:38 → ACK 14:01AA 4546 · flown by Republic	4h 02m	92%	70%
Delta Details →	DCA 11:00 → LGA 12:11DL 5742 · flown by Republic	2h 09m New York	LGA 14:20 → ACK 15:48DL 5767 · flown by Republic	4h 48m	96%	63%
Tight connection: often missed
Delta Details →	DCA 11:00 → JFK 12:18DL 5624 · flown by Republic	52m New York	JFK 13:10 → ACK 14:39DL 5804 · flown by Republic	3h 39m	69%	52%

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 01m · leaves 06:55 2%

LGA · 1h 13m · leaves 09:59 8%

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 1605 DCA 06:55 → BOS JetBlue B6 1352 BOS 12:12 → ACK Connection details →	3h 38m	6h 08m	100%	78%
American AA 1550 DCA 06:00 → BOS JetBlue B6 2352 BOS 09:30 → ACK Connection details →	1h 51m	4h 22m	97%	75%
American AA 4551 DCA 06:00 → JFK JetBlue B6 2091 JFK 09:45 → ACK Connection details →	2h 14m	5h 12m	97%	75%

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