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)


JetBlue	ACK	DCA	1h 37m	75%	4.2%	120	Flying now
American	ACK	DCA	1h 47m	73%	4.3%	163	Flying now

Best connections, any airlines

Most reliable Quickest (80%+ on time)

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


Delta + Americantwo ticketsDetails →	ACK 12:06 → LGA 13:29DL 5712 · flown by Republic	3h 51m New York	LGA 17:20 → DCA 18:58AA 4773 · flown by Republic	6h 52m	94%	64%
American + Deltatwo ticketsDetails →	ACK 11:00 → BOS 12:14AA 4708 · flown by Republic	3h 31m Boston	BOS 15:45 → DCA 17:43DL 5689 · flown by Republic	6h 43m	98%	64%
JetBlue + Deltatwo ticketsDetails →	ACK 18:03 → BOS 18:57B6 1351	2h 53m Boston	BOS 21:50 → DCA 23:43DL 5704 · flown by Republic	5h 40m	92%	62%
JetBlue + Deltatwo ticketsDetails →	ACK 11:15 → LGA 12:31B6 831	2h 14m New York	LGA 14:45 → DCA 16:20DL 5709 · flown by Republic	5h 05m	87%	48%
JetBlue Details →	ACK 14:56 → BOS 15:51B6 1151	2h 21m Boston	BOS 18:12 → DCA 19:59B6 1955	5h 03m	92%	48%
United Details →	ACK 10:53 → EWR 12:39UA 4182 · flown by GoJet	1h 21m Newark	EWR 14:00 → DCA 15:23UA 4433 · flown by GoJet	4h 30m	90%	47%
JetBlue + Deltatwo ticketsDetails →	ACK 16:30 → JFK 17:40B6 192	3h 50m New York	JFK 21:30 → DCA 22:59DL 5743 · flown by Republic	6h 39m	95%	46%
JetBlue + Americantwo ticketsDetails →	ACK 13:58 → HPN 15:04B6 2665	2h 22m White Plains	HPN 17:26 → DCA 18:58AA 5401 · flown by PSA	5h 00m	91%	46%
Tight connection: often missed
JetBlue Details →	ACK 18:03 → BOS 18:57B6 1351	1h 11m Boston	BOS 20:08 → DCA 21:52B6 455	3h 49m	73%	45%
Delta Details →	ACK 12:06 → LGA 13:29DL 5712 · flown by Republic	1h 16m New York	LGA 14:45 → DCA 16:20DL 5709 · flown by Republic	4h 14m	69%	38%

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 · 1h 16m · leaves 16:40 19%

BOS · 1h 11m · leaves 18:03 27%

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