Cheap flights from Washington, D.C. to Boston from $48

In general, March is the cheapest month to fly from Washington, D.C. to Boston. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $197. If you aren’t able to travel during the month of March, then book flights to Boston from Washington, D.C. during December instead. Flights to Boston in December, while not as cheap as those in March, still average around $207.

The cheapest day to depart from Washington, D.C. to Boston is on a Thursday when prices can be found for as low as $278. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to Boston on Sunday is $374.

According to our data, the cheapest time of day to fly to Boston is in the evening. momondo users have found flights departing from Washington, D.C. to Boston in the evening for as low as $255. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In the afternoon is when there is more demand to fly to Boston, so prices are often more expensive at around $412 per ticket.

Fly from Washington, D.C. Reagan-National to Boston Logan Intl for the best Washington, D.C. - Boston Logan Intl flight prices

You are more likely to see cheaper flights to Boston from Washington, D.C. when booking weeks ahead of your departure date. In general, you can expect to find flights to Boston for around $279 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Boston from Washington, D.C. for as low as $158 on momondo.

There are 4 cabin classes available to choose from on Washington, D.C. to Boston Logan Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

You could potentially save up to 5% on your flight if you consider stops on a Washington, D.C. to Boston flight.

As of February 2026, prices for Washington, D.C. to Boston flights are approximately 29% more expensive when compared to flights at the same time last year.

Spirit Airlines, Frontier, and JetBlue are the most popular carriers operating from Washington, D.C. to Boston Logan Intl

American Airlines, United Airlines and JetBlue are the top three most popular airlines that fly to Boston from Washington, D.C. according to our data. American Airlines is the first choice among our users, with 30% of people opting to fly with this airline when traveling to Boston. Keep in mind that there are 7 different airlines that fly to Boston on a routine basis, so you have a few additional options to choose from.

Historically, on average around 19% of flights between Washington, D.C. and Boston have experienced a delay on any given week. The average delay length over the past 12 months has been 131 minutes.

Generally, flights departing in the morning tend to experience fewer delays. Flights in the evening have, in the past, seen delays more frequently in comparison.

Saturday is statistically the day of the week which experiences the fewest number of delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

According to our data, Delta have had the least number of delays on this route over the last 12 months; with about 15% of their flights experiencing any sort of delay.

73 flights are operational daily from Washington, D.C. to Boston as of February 2026. The most popular departure time for this route is 5:00PM, with 46% of flights per day taking off in the afternoon.

The number of flights available between Washington, D.C. and Boston is 516 per week as of February 2026. The most frequent departure day is Mon, with 19% of weekly flights leaving on this day.