Cheap flights from Boston to Washington, D.C. from £65

The cheapest month to fly to Washington, D.C. from Boston is in March. Flight prices, which tend to average around £138, are often lower during this time because this is during the off-season. If you don’t want to visit Washington, D.C. in March, then you should wait until September to fly from Boston, when ticket prices are also cheap, with an average price of £141.

On average, the least expensive day to fly to Washington, D.C. from Boston is on a Friday. momondo users have found tickets for Friday departures for as low as £209. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Saturday is the most expensive day to depart from Boston because it is more convenient for both business and leisure travellers. As a result, prices tend to be around £469.

In the morning is the cheapest time of day to fly from Boston to Washington, D.C. when you can find flight prices for as low as £218. Flying to Washington, D.C. in the morning is an ideal time because this is during off-peak travel hours. Flights to Washington, D.C. are more costly at midday, with an average ticket price of £469. Departure times at midday fall within the peak daily travel times, which is why tickets can be more expensive.

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

You are more likely to see cheaper flights to Washington, D.C. from Boston when booking weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. for around £207 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. from Boston for as low as £139 on momondo.

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

Historically, on average around 19% of flights between Boston and Washington, D.C. have experienced a delay on any given week. The average delay length over the past 12 months has been 129 minutes.

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

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

According to our data, American Airlines have had the fewest delays on this route over the last 12 months, with about 18% of their flights experiencing any sort of delay.

As of February 2026, there are 59 flights per day flying from Boston to Washington, D.C.. The most common time of day flights depart is 17:00, with 48% of flights taking off in the afternoon.

416 flights are operational weekly from Boston to Washington, D.C. as of February 2026. The most popular departure day for this route is Thu, with 18% of flights per week taking off on this day.