Boston (BOS) to Washington (DCA)
Flight time
≈ 1h 36m
Bearing
235° SW
Boston (BOS) to Washington (DCA) is 398 miles (641 km) as the crow flies — the great-circle baseline most distance-based mileage programs credit.
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What actually flies BOS–DCA
Filed traffic dataIn July 2026, Republic Airways operated the most departures, one of 5 carriers flying nonstop BOS–DCA; the Embraer E175 was the most common aircraft at 52% of departures; flights ran 84% full.
Departures
1,367
July 2026
Seats
142,959
both directions
Passengers
119,466
both directions
Load factor
83.6%
RPM ÷ ASM
Who flies BOS–DCA?
Republic Airways operated the most nonstop BOS–DCA departures in July 2026 (678), one of 5 carriers on the route.
- YX
678 departures · 51,457 seats
Share of departures49.6%83.4%
Load
- B6
331 departures · 47,550 seats
Share of departures24.2%84.4%
Load
- AA
312 departures · 40,068 seats
Share of departures22.8%82.8%
Load
- MQ
39 departures · 2,964 seats
Share of departures2.9%83.2%
Load
- DL
7 departures · 920 seats
Share of departures0.5%85.9%
Load
What plane flies BOS–DCA?
In July 2026, the Embraer E175 flew 52% of BOS–DCA departures — more than any other aircraft type.
- Embraer E175
717 departures · 83.4% load
52.4% - Airbus A319
311 departures · 83.3% load
22.8% - Airbus A220-300
278 departures · 84.3% load
20.3% - Airbus A320
61 departures · 82.8% load
4.5%
How has BOS–DCA traffic changed?
Nonstop BOS–DCA departures fell from 1,456 in August 2025 to 1,367 in July 2026.
Monthly nonstop BOS–DCA traffic, trailing 12 months through July 2026. Bars scale to the busiest month; months with no filed service show as zero.
August 2025
1,456 departures · 115,891 passengers
81.4%
Load
September 2025
1,491 departures · 125,124 passengers
76.5%
Load
October 2025
1,512 departures · 134,630 passengers
83.5%
Load
November 2025
1,420 departures · 122,988 passengers
78.2%
Load
December 2025
1,363 departures · 115,735 passengers
75.5%
Load
January 2026
1,368 departures · 90,172 passengers
59.3%
Load
February 2026
1,333 departures · 99,095 passengers
67.0%
Load
March 2026
1,571 departures · 134,869 passengers
77.2%
Load
April 2026
1,560 departures · 133,389 passengers
79.0%
Load
May 2026
1,575 departures · 140,201 passengers
83.1%
Load
June 2026
1,461 departures · 126,981 passengers
82.6%
Load
July 2026
1,367 departures · 119,466 passengers
83.6%
Load
By direction
Each direction is filed separately — they rarely match.
BOS → DCA
82.0% full
686 departures · 58,782 passengers
DCA → BOS
85.1% full
681 departures · 60,684 passengers
Nonstop BOS–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).
The airports
Frequently asked
How far is Boston (BOS) from Washington (DCA)?
BOS to DCA is 398 miles (641 km / 346 nautical miles) measured great-circle — the shortest path over the surface of the Earth.
How long is the flight from BOS to DCA?
A nonstop covers the 398-mile great-circle distance in roughly 1h 36m of block time, before winds. Actual schedules vary a few percent by direction and aircraft.
What plane flies BOS–DCA?
In July 2026, the Embraer E175 flew the largest share of departures (52.4%), followed by the Airbus A319 (22.8%).
What mileage do I earn flying BOS–DCA?
Distance-based programs credit off the 398-mile great-circle figure, then apply your fare-class earning rate. Revenue-based programs credit off the fare instead.
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