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£70 Cheap Flights from Boston (BOS) to Washington (IAD)

View £70 flight on Thu, 29 Oct 2026Opens in a new window

Flight 1

Popular airlines from Logan International Airport (BOS) to Washington Dulles International Airport (IAD)

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Cheap Flights from Boston (BOS) to Washington (IAD)

Prices were available within the past 7 days and start at £70 for one-way flights and £141 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Thu, 29 Oct - Sat, 31 Oct
BOS
Boston
IAD
Washington
£141 Return, found 6 hours ago
£141
Return
found 6 hours ago
Select United flight, departing Thu, 29 Oct from Boston to Washington, returning Sat, 31 Oct, priced at £141 found 6 hours ago
United
Thu, 29 Oct - Sat, 31 Oct
BOS
Boston
IAD
Washington
£163 Return, found 6 hours ago
£163
Return
found 6 hours ago
Select United flight, departing Thu, 29 Oct from Boston to Washington, returning Sat, 31 Oct, priced at £163 found 6 hours ago
United
Thu, 29 Oct - Sat, 31 Oct
BOS
Boston
IAD
Washington
£171 Return, found 6 hours ago
£171
Return
found 6 hours ago
Select United flight, departing Thu, 29 Oct from Boston to Washington, returning Sat, 31 Oct, priced at £171 found 6 hours ago
United
Fri, 27 Nov - Sat, 5 Dec
BOS
Boston
IAD
Washington
£178 Return, found 2 days ago
£178
Return
found 2 days ago
Select United flight, departing Fri, 27 Nov from Boston to Washington, returning Sat, 5 Dec, priced at £178 found 2 days ago
United
Mon, 30 Nov - Sat, 12 Dec
BOS
Boston
IAD
Washington
£180 Return, found 5 days ago
£180
Return
found 5 days ago
Select United flight, departing Mon, 30 Nov from Boston to Washington, returning Sat, 12 Dec, priced at £180 found 5 days ago
United
Tue, 1 Dec - Sun, 6 Dec
BOS
Boston
IAD
Washington
£182 Return, found 2 days ago
£182
Return
found 2 days ago
Select United flight, departing Tue, 1 Dec from Boston to Washington, returning Sun, 6 Dec, priced at £182 found 2 days ago
Delta
Thu, 29 Oct - Sat, 31 Oct
BOS
Boston
IAD
Washington
£186 Return, found 6 hours ago
£186
Return
found 6 hours ago
Select Delta flight, departing Thu, 29 Oct from Boston to Washington, returning Sat, 31 Oct, priced at £186 found 6 hours ago
United
Thu, 29 Oct - Sat, 31 Oct
BOS
Boston
IAD
Washington
£186 Return, found 6 hours ago
£186
Return
found 6 hours ago
Select United flight, departing Thu, 29 Oct from Boston to Washington, returning Sat, 31 Oct, priced at £186 found 6 hours ago
American Airlines
Fri, 28 Aug - Sun, 30 Aug
BOS
Boston
IAD
Washington
£206 Return, found 3 days ago
£206
Return
found 3 days ago
Select American Airlines flight, departing Fri, 28 Aug from Boston to Washington, returning Sun, 30 Aug, priced at £206 found 3 days ago
Alaska Airlines
Tue, 15 Sept - Tue, 29 Sept
BOS
Boston
IAD
Washington
£442 Return, found 4 days ago
£442
Return
found 4 days ago
Select Alaska Airlines flight, departing Tue, 15 Sept from Boston to Washington, returning Tue, 29 Sept, priced at £442 found 4 days ago

Alternative airports near Washington

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Ronald Reagan Washington National DCA. Cheapest and Closest option available. Average driving time to city centre is 8 minutes. Flights from £215
DCA
Ronald Reagan Washington National
CheapestClosest
Average driving time to city centre8 min
Flights from £215

Find the cheapest month to fly from Boston (BOS) to Washington (IAD)

January is typically the cheapest month to fly

From £71 - £125 per traveller.

Frequently asked questions

How much does a flight from Boston, MA (BOS) to Washington, DC (IAD) cost?
You can find one-way and return flights from Boston, MA (BOS) to Washington, DC (IAD) with Expedia. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see our cheapest fares first, and use the Price Tracking tool to receive alerts when BOS to IAD ticket fares go up or down.
What is the cheapest month to fly from Boston, MA (BOS) to Washington, DC (IAD)?
The cheapest months to fly from Boston, MA (BOS) to Washington, DC (IAD) are typically during off-peak season when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you are able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Boston, MA (BOS) to Washington, DC (IAD)?
Enter BOS to IAD and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
How do I find cheap flights from Boston, MA (BOS) to Washington, DC (IAD)?
To find a cheap flight from Boston, MA (BOS) to Washington, DC (IAD), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Boston, MA (BOS-Logan Intl.) to Washington, DC (IAD-Washington Dulles Intl.)?
The cheapest months to fly from Boston, MA (BOS-Logan Intl.) to Washington, DC (IAD-Washington Dulles Intl.) are typically January and February, with average return flights around £164. However, the most popular months for this route are May and June, which means you'll find plenty of flight options during those times. If you're looking for the best value, consider travelling in the quieter months, but if flexibility and choice are key, May and June offer a wide selection of flights.
What is the earliest flight from Boston, MA (BOS) to Washington, DC (IAD)?
Sort flights by "Departure (earliest)" on Expedia to find the earliest flight from Boston, MA (BOS) to Washington, DC (IAD). To compare more early flights, use the "Early Morning" and "Morning" filters in your search.
How long does it take to fly from Boston, MA (BOS-Logan Intl.) to Washington, DC (IAD-Washington Dulles Intl.)?
Direct flights from BOS to IAD usually take about 1 hour 50 minutes, traveling roughly 661 kilometers. If you opt for a connecting flight, expect to add around 4 hours 10 minutes to your journey. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Boston, MA (BOS) to Washington, DC (IAD)?
Select the "Business class" and "First class" filters when looking for Boston, MA (BOS) to Washington, DC (IAD) flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a Boston, MA (BOS) to Washington, DC (IAD) flight with Expedia?
It's easy to earn miles on a Boston, MA (BOS) to Washington, DC (IAD) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
Is it cheaper to buy a plane ticket from Boston, MA (BOS) to Washington, DC (IAD) at the last minute?
Typically, booking a last minute flight from Boston, MA (BOS) to Washington, DC (IAD) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Boston, MA (BOS) to Washington, DC (IAD) flight and hotel package?
Securing a Boston, MA (BOS) to Washington, DC (IAD) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Boston, MA (BOS) to Washington, DC (IAD)?
If you booked your Boston, MA (BOS) to Washington, DC (IAD) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Logan Intl.
Destination airport
Washington Dulles Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, United
Return price
£140
Distance
657 km
Average flight time
1 hour 51 mins

Book with confidence

Compare flights from Boston to Washington easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from Boston to Washington. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to Washington Dulles Intl. in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Logan Intl. to Washington Dulles Intl..  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from Logan Intl. (BOS) to Washington Dulles Intl. (IAD)

The easiest way to view the best deals on flights from Boston to Washington today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Logan Intl. to Washington Dulles Intl. start at just £141 and range up to £442.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near Boston and Washington
  • booking your flight during October, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your Boston to Washington flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Logan Intl. to Washington Dulles Intl. for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Compare flights from Boston to Washington easily and book with confidence

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*Available to Expedia members.