Nantucket (ACK) to Boston (BOS)
Flight time
≈ 0h 59m
Bearing
328° NW
Nantucket (ACK) to Boston (BOS) is 91 miles (146 km) as the crow flies — the great-circle baseline most distance-based mileage programs credit.
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What actually flies ACK–BOS
Filed traffic dataIn July 2026, Cape Air operated the most departures, one of 4 carriers flying nonstop ACK–BOS; the Cessna C-402 was the most common aircraft at 82% of departures; flights ran 57% full.
Departures
1,079
July 2026
Seats
28,103
both directions
Passengers
16,095
both directions
Load factor
57.3%
seat-miles filled
Who flies ACK–BOS?
Cape Air operated the most nonstop ACK–BOS departures in July 2026 (889), one of 4 carriers on the route.
- 9K
Cape Air
889 departures · 8,001 seats
Share of departures82.4%66.2%
Load
- B6
109 departures · 15,260 seats
Share of departures10.1%51.7%
Load
- YX
62 departures · 4,690 seats
Share of departures5.7%61.0%
Load
- TJ
Tradewind Aviation
19 departures · 152 seats
Share of departures1.8%33.6%
Load
What plane flies ACK–BOS?
In July 2026, the Cessna C-402 flew 82% of ACK–BOS departures — more than any other aircraft type.
- Cessna C-402
889 departures · 66.2% load
82.4% - Airbus A220-300
109 departures · 51.7% load
10.1% - Embraer E175
62 departures · 61.0% load
5.8% - Pilatus PC-12
19 departures · 33.6% load
1.8%
How has ACK–BOS traffic changed?
Nonstop ACK–BOS departures fell from 1,143 in August 2025 to 1,079 in July 2026.
Monthly nonstop ACK–BOS traffic, trailing 12 months through July 2026. Bars scale to the busiest month; months with no filed service show as zero.
August 2025
1,143 departures · 13,787 passengers
63.7%
Load
September 2025
1,075 departures · 10,597 passengers
59.8%
Load
October 2025
693 departures · 6,686 passengers
59.7%
Load
November 2025
472 departures · 2,149 passengers
50.6%
Load
December 2025
543 departures · 2,635 passengers
53.9%
Load
January 2026
341 departures · 1,408 passengers
45.9%
Load
February 2026
281 departures · 1,249 passengers
49.4%
Load
March 2026
371 departures · 1,739 passengers
52.1%
Load
April 2026
525 departures · 2,758 passengers
58.4%
Load
May 2026
791 departures · 6,042 passengers
57.4%
Load
June 2026
910 departures · 11,517 passengers
48.7%
Load
July 2026
1,079 departures · 16,095 passengers
57.3%
Load
By direction
Each direction is filed separately — they rarely match.
BOS → ACK
57.3% full
556 departures · 8,252 passengers
ACK → BOS
57.2% full
523 departures · 7,843 passengers
Nonstop ACK–BOS traffic has been filed since 2025.
Source: US DOT BTS Form 41 T-100 Segment (All Carriers). Data through July 2026; filings from 2025. Public domain (US Government work). Load factor is RPM ÷ ASM (revenue passenger-miles ÷ available seat-miles).
The airports
Frequently asked
How far is Nantucket (ACK) from Boston (BOS)?
ACK to BOS is 91 miles (146 km / 79 nautical miles) measured great-circle — the shortest path over the surface of the Earth.
How long is the flight from ACK to BOS?
A nonstop covers the 91-mile great-circle distance in roughly 0h 59m of block time, before winds. Actual schedules vary a few percent by direction and aircraft.
What plane flies ACK–BOS?
In July 2026, the Cessna C-402 flew the largest share of departures (82.4%), followed by the Airbus A220-300 (10.1%).
What mileage do I earn flying ACK–BOS?
Distance-based programs credit off the 91-mile great-circle figure, then apply your fare-class earning rate. Revenue-based programs credit off the fare instead.
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