Nantucket (ACK) to Washington (DCA)
Flight time
≈ 1h 37m
Bearing
248° W
Nantucket (ACK) to Washington (DCA) is 404 miles (651 km) as the crow flies — the great-circle baseline most distance-based mileage programs credit.
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What actually flies ACK–DCA
Filed traffic dataIn July 2026, Republic Airways operated the most departures, one of 2 carriers flying nonstop ACK–DCA; the Embraer E175 was the most common aircraft at 72% of departures; flights ran 73% full.
Departures
165
July 2026
Seats
15,548
both directions
Passengers
11,285
both directions
Load factor
72.6%
seat-miles filled
Who flies ACK–DCA?
Republic Airways operated the most nonstop ACK–DCA departures in July 2026 (118), one of 2 carriers on the route.
- YX
118 departures · 8,968 seats
Share of departures71.5%85.3%
Load
- B6
47 departures · 6,580 seats
Share of departures28.5%55.2%
Load
What plane flies ACK–DCA?
In July 2026, the Embraer E175 flew 72% of ACK–DCA departures — more than any other aircraft type.
- Embraer E175
118 departures · 85.3% load
71.5% - Airbus A220-300
47 departures · 55.2% load
28.5%
How has ACK–DCA traffic changed?
Nonstop ACK–DCA departures fell from 194 in August 2025 to 165 in July 2026.
Monthly nonstop ACK–DCA traffic, trailing 12 months through July 2026. Bars scale to the busiest month; months with no filed service show as zero.
August 2025
194 departures · 12,700 passengers
78.4%
Load
September 2025
68 departures · 5,243 passengers
59.5%
Load
October 2025
17 departures · 1,289 passengers
54.2%
Load
November 2025
0 departures · 0 passengers
—
Load
December 2025
0 departures · 0 passengers
—
Load
January 2026
0 departures · 0 passengers
—
Load
February 2026
0 departures · 0 passengers
—
Load
March 2026
0 departures · 0 passengers
—
Load
April 2026
0 departures · 0 passengers
—
Load
May 2026
0 departures · 0 passengers
—
Load
June 2026
93 departures · 5,819 passengers
60.4%
Load
July 2026
165 departures · 11,285 passengers
72.6%
Load
By direction
Each direction is filed separately — they rarely match.
ACK → DCA
70.6% full
83 departures · 5,627 passengers
DCA → ACK
74.7% full
82 departures · 5,658 passengers
Nonstop ACK–DCA 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 Washington (DCA)?
ACK to DCA is 404 miles (651 km / 351 nautical miles) measured great-circle — the shortest path over the surface of the Earth.
How long is the flight from ACK to DCA?
A nonstop covers the 404-mile great-circle distance in roughly 1h 37m of block time, before winds. Actual schedules vary a few percent by direction and aircraft.
What plane flies ACK–DCA?
In July 2026, the Embraer E175 flew the largest share of departures (71.5%), followed by the Airbus A220-300 (28.5%).
What mileage do I earn flying ACK–DCA?
Distance-based programs credit off the 404-mile great-circle figure, then apply your fare-class earning rate. Revenue-based programs credit off the fare instead.
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