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 May 2026, Republic Airways operated the most departures, one of 4 carriers flying nonstop BOS–DCA; the Embraer E175 was the most common aircraft at 50% of departures; flights ran 83% full.
Departures
1,575
May 2026
Seats
168,657
both directions
Passengers
140,201
both directions
Load factor
83.1%
RPM ÷ ASM
Who flies BOS–DCA?
Republic Airways operated the most nonstop BOS–DCA departures in May 2026 (728), one of 4 carriers on the route.
- YX
728 departures · 55,293 seats
Share of departures46.2%82.7%
Load
- B6
460 departures · 64,824 seats
Share of departures29.2%84.9%
Load
- AA
334 departures · 44,512 seats
Share of departures21.2%80.6%
Load
- MQ
53 departures · 4,028 seats
Share of departures3.4%88.9%
Load
What plane flies BOS–DCA?
In May 2026, the Embraer E175 flew 50% of BOS–DCA departures — more than any other aircraft type.
- Embraer E175
781 departures · 83.1% load
49.6% - Airbus A220-300
438 departures · 85.5% load
27.8% - Airbus A319
293 departures · 81.9% load
18.6% - Boeing 737-800
39 departures · 74.4% load
2.5% - Airbus A320
24 departures · 73.8% load
1.5%
How has BOS–DCA traffic changed?
Nonstop BOS–DCA departures rose from 1,433 in June 2025 to 1,575 in May 2026.
Monthly nonstop BOS–DCA traffic, trailing 12 months through May 2026. Bars scale to the busiest month; months with no filed service show as zero.
June 2025
1,433 departures · 113,257 passengers
84.5%
Load
July 2025
1,345 departures · 105,739 passengers
84.4%
Load
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
By direction
Each direction is filed separately — they rarely match.
DCA → BOS
85.2% full
788 departures · 71,840 passengers
BOS → DCA
81.1% full
787 departures · 68,361 passengers
Nonstop BOS–DCA traffic has been filed since 2025.
Source: US DOT BTS Form 41 T-100 Segment (All Carriers). Data through May 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 May 2026, the Embraer E175 flew the largest share of departures (49.6%), followed by the Airbus A220-300 (27.8%).
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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