American AirlinesDepart07:00
Thu, Dec 31DCA → BOS
1h 36m · Direct
$55one way, per person
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- Cheapest fare
- $55
- Cheapest month
- December
- Direct flights
- Yes
- Flight time
- 1h 28m
American Airlines · Thu, Dec 31
from $55
American Airlines and jetBlue
630 km
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Cheapest month to fly from Washington to Boston
Lowest one-way fare per person in each month. Choose a month to see every date.
Cheapest dates in December 2026
The lowest fares we've seen for each day, cheapest first.
American Airlines
jetBlueDepart09:59
Fri, Dec 11DCA → BOS
1h 28m · Direct
$59one way, per person
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About flights from Washington to Boston
Washington (WAS) and Boston (BOS) are about 630 km apart. Direct flights take around 1h 28m, and recent direct fares were with American Airlines and jetBlue. Over the next few months, one-way fares start from $55, and December 2026 is currently the cheapest month to fly.
These prices come from searches travellers made in the last 48 hours, so they move quickly. If you see a good fare, it's worth booking soon. FlightsExp is free to use: you book directly with our travel partner.
Frequently asked questions
How much is a flight from Washington to Boston?
The cheapest one-way fare we've seen recently is $55 with American Airlines, departing Thursday, December 31, 2026. Over the coming months, the lowest fare in each month ranges from $55 to $1,764.
What is the cheapest month to fly from Washington to Boston?
December 2026 currently has the lowest fares, from $55 one way.
Are there direct flights from Washington to Boston?
Yes. Recent direct fares were with American Airlines and jetBlue.
How long is the flight from Washington to Boston?
A direct flight takes about 1h 28m. Washington and Boston are around 630 km apart.
Which airlines fly from Washington to Boston?
Recent fares on this route were with American Airlines, jetBlue and TAP Air Portugal.
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