Cheap Flights from Boston to Washington, D.C.
No deal from Boston to Washington, D.C. has cleared our price bar yet. What we have seen on the route is below.
Across 4 months of observations from Boston to Washington, D.C., the lowest round-trip fare we recorded was $112, in August. The typical fare was $185. August was the cheapest month we saw and July the dearest.
The most recent price we saw on this route was $151 on Frontier and United, seen Oct 16. It is an unverified observation and may have changed.
See every deal <a href="/from/boston">from Boston</a>, <a href="/to/washington-dc">to Washington, D.C.</a>, or the return direction <a href="/from/washington-dc/to/boston">Washington, D.C. to Boston</a>.
Latest price we saw: Boston to Washington, D.C.
The most recent round-trip fare our sweep found on this route. It is not verified and may have changed since the date shown.
| From | Price | Per mile | Travel dates | Airline | Seen | Check price |
|---|---|---|---|---|---|---|
| Boston (BOS) to Washington, D.C. (IAD) | $151 | 18.3¢ | Nov 23 – Dec 2 | Frontier and United | Oct 16 | Check price |
Price history: Boston to Washington, D.C.
What we observed by month, from our signals database. Unverified observations, not bookable prices.
| Month | Low | Typical | Sightings |
|---|---|---|---|
| Oct 2026 | $115 | $199 | 82 |
| Sep 2026 | $117 | $205 | 54 |
| Aug 2026 | $112 | $163 | 230 |
| Jul 2026 | $173 | $173 | 2 |
Frequently asked questions
How many flight deals from Boston to Washington, D.C. are on Sparkflights right now?
There are 0 verified deals from Boston to Washington, D.C. on the board right now. The list refreshes hourly.
What is the lowest price ever seen from Boston to Washington, D.C.?
The lowest fare we've recorded from Boston to Washington, D.C. is $112, based on 368 price observations over 4 months.
How much does a flight from Boston to Washington, D.C. cost?
The typical round-trip fare we observed from Boston to Washington, D.C. is $185, against a recorded low of $112. These are observations, not quotes.
When is the cheapest month to fly Boston to Washington, D.C.?
August was the cheapest month we observed from Boston to Washington, D.C. and July the dearest, over 4 months of data.
What is the current price from Boston to Washington, D.C.?
The most recent fare our sweep saw from Boston to Washington, D.C. is $151, on Oct 16. It is an unverified observation rather than a verified deal, so check it before booking.