Question 1

How many flights depart from Boston to Washington, D.C. on average per week?

Accepted Answer

318 flights are operational weekly from Boston to Washington, D.C. as of December 2025. The most popular departure day for this route is Sun, with 19% of flights per week taking off on this day.

Question 2

How far in advance should I book a flight to Washington, D.C.?

Accepted Answer

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 £206 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 £140 on momondo.

Question 3

What is the cheapest day to depart on your flight to Washington, D.C.?

Accepted Answer

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 £211. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Sunday 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 £503.

Question 4

How many flights depart from Boston to Washington, D.C. on average per day?

Accepted Answer

As of December 2025, there are 45 flights per day flying from Boston to Washington, D.C.. The most common time of day flights depart is 19:00, with 40% of flights taking off in the afternoon.

Question 5

What is the cheapest time of day to depart on your flight to Washington, D.C.?

Accepted Answer

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 £227. 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 £473. Departure times at midday fall within the peak daily travel times, which is why tickets can be more expensive.

Question 6

What is the most punctual flight time for Boston to Washington, D.C. flights?

Accepted Answer

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.

Question 7

What cabin class options are available on Boston Logan Intl to Washington, D.C. flights?

Accepted Answer

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.

Question 8

How often are flights from Boston to Washington, D.C. delayed?

Accepted Answer

Historically, on average around 18% 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.

Question 9

What is the cheapest Boston Logan Intl to Washington, D.C. flight route?

Accepted Answer

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

Question 10

What is the cheapest airline that flies from Boston Logan Intl to Washington, D.C.?

Accepted Answer

United Airlines is the most popular carrier operating from Boston Logan Intl to Washington, D.C.

Question 11

Which airline has the best punctuality record on Boston to Washington, D.C. flights?

Accepted Answer

According to our data, American Airlines have had the fewest delays on this route over the last 12 months, with about 16% of their flights experiencing any sort of delay.

Question 12

How have Boston to Washington, D.C. flight prices changed over time?

Accepted Answer

As of December 2025, prices for Boston to Washington, D.C. flights are approximately 12% more expensive when compared to flights at the same time last year.

Question 13

What day of the week experiences the fewest flight delays on this route?

Accepted Answer

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

Question 14

What is the cheapest month to fly to Washington, D.C.?

Accepted Answer

The cheapest month to fly to Washington, D.C. from Boston is in January. Flight prices, which tend to average around £116, are often lower during this time because this is during the off-season. If you don’t want to visit Washington, D.C. in January, then you should wait until February to fly from Boston, when ticket prices are also cheap, with an average price of £132.

Question 15

Is flying the fastest way to get from Boston to Washington, D.C.?

Accepted Answer

The quickest way to travel this route is to take a flight from Boston to Washington, D.C., doing so can potentially save up to 8h 11m of travel time. While these options may take longer, booking a train from Boston to Washington, D.C. or a bus from Boston to Washington, D.C. may suit your needs if travel time is less of a factor in your decision making.

Question 16

Is flying the cheapest way to get from Boston to Washington, D.C.?

Accepted Answer

The cheapest way is to get a bus from Boston to Washington, D.C., which can be as cheap as £71. A flight from Boston to Washington, D.C. is more expensive than a bus, with prices starting at £109. A train from Boston to Washington, D.C. is also an option, with an average price of £73.

Question 17

When did momondo last update prices for flights from Boston Logan Intl Airport to Washington, D.C.?

Accepted Answer

Prices for flights from Boston Logan Intl Airport to Washington, D.C. were last updated today.

Question 18

How old do you have to be to fly from Boston Logan Intl Airport to Washington, D.C.?

Accepted Answer

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Boston Logan Intl Airport to Washington, D.C..

Question 19

What documentation or ID do you need to fly to Washington, D.C.?

Accepted Answer

The travel and health documents required for your trip to Washington, D.C. can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Washington, D.C.. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best price found	£117
Fastest flight time	1h 46m
Direct flights	Every day
Airports in Washington, D.C.	2 airports

Cheap flights from Boston to Washington, D.C. from £58

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Boston to Washington, D.C. departing on 26/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names, great deals

Big names, great deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Boston to Washington, D.C.

Cheap return flights

Cheap one-way flights

Cheap last-minute flights

Cheap direct flights

United Airlines flights from Boston to Washington, D.C.

Our best United Airlines deals on Boston to Washington, D.C. flight tickets

Delta flights from Boston to Washington, D.C.

Our best Delta deals on Boston to Washington, D.C. flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Boston to Washington, D.C. that are best for you.

See travel insights to Washington, D.C. from

How to get the cheapest flight ticket from Boston to Washington, D.C.

What is the cheapest month to fly to Washington, D.C.?

What is the cheapest day to depart on your flight to Washington, D.C.?

What is the cheapest time of day to depart on your flight to Washington, D.C.?

What is the cheapest Boston Logan Intl to Washington, D.C. flight route?

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

How far in advance should I book a flight to Washington, D.C.?

What cabin class options are available on Boston Logan Intl to Washington, D.C. flights?

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.

How have Boston to Washington, D.C. flight prices changed over time?

As of December 2025, prices for Boston to Washington, D.C. flights are approximately 12% more expensive when compared to flights at the same time last year.

What is the cheapest airline that flies from Boston Logan Intl to Washington, D.C.?

United Airlines is the most popular carrier operating from Boston Logan Intl to Washington, D.C.

How often are flights from Boston to Washington, D.C. delayed?

Historically, on average around 18% 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.

What is the most punctual flight time for Boston to Washington, D.C. flights?

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.

What day of the week experiences the fewest flight delays on this route?

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

Which airline has the best punctuality record on Boston to Washington, D.C. flights?

According to our data, American Airlines have had the fewest delays on this route over the last 12 months, with about 16% of their flights experiencing any sort of delay.

How many flights depart from Boston to Washington, D.C. on average per day?

As of December 2025, there are 45 flights per day flying from Boston to Washington, D.C.. The most common time of day flights depart is 19:00, with 40% of flights taking off in the afternoon.

How many flights depart from Boston to Washington, D.C. on average per week?

318 flights are operational weekly from Boston to Washington, D.C. as of December 2025. The most popular departure day for this route is Sun, with 19% of flights per week taking off on this day.

When to book flights from Boston to Washington, D.C.

Cheap Boston to Washington, D.C. (BOS to WAS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Boston to Washington, D.C.

Best price found

Fastest flight time

Direct flights

Airports in Washington, D.C.

Is flying the fastest way to get from Boston to Washington, D.C.?

Is flying the cheapest way to get from Boston to Washington, D.C.?

How far is Boston Logan Intl to Washington, D.C. by plane?

When did momondo last update prices for flights from Boston Logan Intl Airport to Washington, D.C.?

How old do you have to be to fly from Boston Logan Intl Airport to Washington, D.C.?

What documentation or ID do you need to fly to Washington, D.C.?

What is the most popular plane model from Boston to Washington, D.C.?

What is the most popular airline from Boston to Washington, D.C.?

Travelling to a place near Washington, D.C.?

Why use momondo?

Why should I use momondo to find a flight deal from Boston to Washington, D.C.?

Can I find flights from Boston to Washington, D.C. with flexible booking policies on momondo?

How can momondo help me find flights from Boston to Washington, D.C.?

I’m not ready to book a flight from Boston to Washington, D.C. right now. Can momondo alert me if prices change?

An easier way to manage your Washington, D.C. trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

Fly into one of these airports located in Washington, D.C.

Airports listed have a maximum distance of 22.4 mi from Washington, D.C.