Boston to Washington flights
The cheapest round trip we found from Boston to Washington is $190 (Nov 20 – 23, Nonstop). It usually costs $167.
BOS to WAS · Round trip · Economy · Prices per person in USD · Price found (2 days ago)
Cheapest found
Cheapest round trip by month
Lowest fare found per departure month| Month | Cheapest round trip |
|---|---|
| November 2026 | $190 |
| December 2026 | $167 |
| January 2027 | $146 (cheapest month) |
| February 2027 | $204 |
Cheapest dates in the next 4 months
Round trip, per person-
Nov 20 – 23 3 nights · leave Fri$190 +14% vs usual$190 +14% vs usual Book
American Airlines Nonstop · 1h 54m
Prices change often. The booking site shows the final price before you pay. Other dates? Set an alert
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Washington · Nov 20 – 23Partner links: we may earn a commission if you book, at no extra cost to you.
Good to know
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Boston to Washington: questions
How much does a flight from Boston to Washington cost?
The cheapest round trip we have found right now is $190, leaving November 20 and returning November 23. The usual price on this route is about $167. Prices are per person, economy, in USD.
What is the cheapest month to fly from Boston to Washington?
January 2027, with round trips from $146. The most expensive month in our data is February (from $204). Based on the 4 months ahead we have prices for.
Which airports do Boston to Washington flights use?
Boston airports include Logan International (BOS) and Pease Air Force Base (PSM). Washington airports include Washington Dulles International (IAD) and Ronald Reagan National (DCA). The prices on this page cover every airport in both cities (BOS and WAS are the city codes).
About this route
We track round-trip economy fares from Boston (United States) to Washington (United States) using Travelpayouts / Aviasales data. The cheapest round trip we've found is $190, departing November 20 and returning November 23 on a nonstop flight. The cheapest month to fly in our data is January, from $146. Prices are per person and were correct when found; the final price is set by the airline or booking site when you book.