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Cheap Flights from Boston (BOS) to Washington D.C. (IAD)

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      Travellers and cabin class, 1 Adult, Economy

      Compare Boston Logan International to Washington Dulles flight deals

      Find the cheapest month or even day of the year to fly to Washington Dulles

      Book the best Washington Dulles fare with no extra fees

      Flight deals from Boston Logan International to Washington Dulles

      Looking for a cheap last-minute deal or the best return flight from Boston Logan International to Washington Dulles? Find the lowest prices on one-way and return tickets right here.
      Washington D.C..$212 per passenger.Departing Thu, 12 Jun, returning Mon, 16 Jun.Return flight with United.Outbound direct flight with United departs from Boston Logan International on Thu, 12 Jun, arriving in Washington Dulles.Inbound direct flight with United departs from Washington Dulles on Mon, 16 Jun, arriving in Boston Logan International.Price includes taxes and charges.From $212, select.
      Washington D.C..$243 per passenger.Departing Thu, 9 Oct, returning Mon, 13 Oct.Return flight with United.Outbound direct flight with United departs from Boston Logan International on Thu, 9 Oct, arriving in Washington Dulles.Inbound direct flight with United departs from Washington Dulles on Mon, 13 Oct, arriving in Boston Logan International.Price includes taxes and charges.From $243, select.
      Washington D.C..$243 per passenger.Departing Sat, 18 Oct, returning Mon, 17 Nov.Return flight with United.Outbound direct flight with United departs from Boston Logan International on Sat, 18 Oct, arriving in Washington Dulles.Inbound direct flight with United departs from Washington Dulles on Mon, 17 Nov, arriving in Boston Logan International.Price includes taxes and charges.From $243, select.
      Washington D.C..$243 per passenger.Departing Tue, 23 Sep, returning Sat, 4 Oct.Return flight with United.Outbound direct flight with United departs from Boston Logan International on Tue, 23 Sep, arriving in Washington Dulles.Inbound direct flight with United departs from Washington Dulles on Sat, 4 Oct, arriving in Boston Logan International.Price includes taxes and charges.From $243, select.
      Washington D.C..$245 per passenger.Departing Thu, 4 Sep, returning Sun, 7 Sep.Return flight with United.Outbound direct flight with United departs from Boston Logan International on Thu, 4 Sep, arriving in Washington Dulles.Inbound direct flight with United departs from Washington Dulles on Sun, 7 Sep, arriving in Boston Logan International.Price includes taxes and charges.From $245, select.
      Washington D.C..$247 per passenger.Departing Sat, 8 Nov, returning Tue, 11 Nov.Return flight with United.Outbound direct flight with United departs from Boston Logan International on Sat, 8 Nov, arriving in Washington Dulles.Inbound direct flight with United departs from Washington Dulles on Tue, 11 Nov, arriving in Boston Logan International.Price includes taxes and charges.From $247, select.
      Washington D.C..$250 per passenger.Departing Fri, 4 Jul, returning Fri, 4 Jul.Return flight with United.Outbound direct flight with United departs from Boston Logan International on Fri, 4 Jul, arriving in Washington Dulles.Inbound direct flight with United departs from Washington Dulles on Fri, 4 Jul, arriving in Boston Logan International.Price includes taxes and charges.From $250, select.
      Washington D.C..$253 per passenger.Departing Wed, 20 Aug, returning Tue, 9 Sep.Return flight with United.Outbound direct flight with United departs from Boston Logan International on Wed, 20 Aug, arriving in Washington Dulles.Inbound direct flight with United departs from Washington Dulles on Tue, 9 Sep, arriving in Boston Logan International.Price includes taxes and charges.From $253, select.

      Find the cheapest month to fly from Boston Logan International to Washington Dulles

      We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Boston Logan International to Washington Dulles flights are currently cheapest in June.
      May
      from $308
      Jun
      from $212
      Jul
      from $250
      Aug
      from $258
      Sep
      from $245
      Oct
      from $243
      Nov
      from $247
      Dec
      from $353
      Jan
      from $297
      Feb
      from $354
      Mar
      from $537
      Apr
      from $261

      Direct flights from Boston Logan International to Washington Dulles

      Boston Logan International to Washington Dulles: Alternative routes

      Compare routes from Boston Logan International to Washington D.C. below. You may find an airport to fly into that's cheaper, faster, or easier than Washington Dulles.

      Boston to Washington D.C.: Flight information

      The things to know before you go.
      Cheapest flight found$212
      Cheapest month to flyJune
      Average flight time1 hr, 41 mins
      Most popular airlineUnited
      Average flights per week125

      Finding cheap flights from Boston Logan International to Washington Dulles: Frequently asked questions

      The best price we found for a return flight from Boston Logan International to Washington Dulles is $212. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
      1 hour and 41 minutes is the average flight time from Boston Logan International to Washington Dulles.
      United, Avianca and Copa fly direct from Boston Logan International to Washington Dulles.
      As of May 2025, there are 125 flights per week flying from Boston Logan International to Washington Dulles.
      The cheapest month to fly from Boston Logan International to Washington Dulles is usually May 2025.
      After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Boston Logan International Airport to Washington Dulles Airport on Thursday, 12 June 2025.
      Yes – the average flight time is 1 hour and 41 minutes.
      We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Washington Dulles but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
      Currently, United offers the cheapest flight tickets to Washington Dulles.

      Travelling from Logan International Airport (BOS) to Washington Dulles International Airport (IAD): what you need to know

      • Around 1 hour 40 minutes is how long you can expect to be travelling on a direct flight from Logan International Airport to Washington Dulles International Airport.

      • Boston and Washington DC share the same timezone, UTC-4.

      • You can choose from 240 weekly Logan International Airport to Washington Dulles International Airport flights. The 05:30 departure with United Airlines is the earliest available. United Airlines operates the last service of the day at 19:49.

      • Arriving two hours before an international flight and one hour ahead of a domestic departure are travel rules worth sticking to. Make sure you're at the airport on time to board your BOS to IAD flight.

      • During popular months like August, you'll want to get to the airport well in advance. Plan to arrive two hours before a domestic departure and four hours ahead of international flights whenever you're flying during peak periods in general.

      • Jetting into Washington DC (and then seeing more of United States!) is a breeze with United Airlines. This popular carrier offers direct flights from Logan International Airport to Washington Dulles International Airport.

      • The airline with the highest passenger demand on this route is United Airlines.

      • United Airlines tops the rankings as the most punctual carrier for BOS to IAD flights, with 84.71% of services reaching their destination on schedule.

      • We make it a piece of cake to book a flight with a stopover. To see all your options for tickets from Logan International Airport to Washington Dulles International Airport, deselect 'Direct flights only.' Then, pick a flight with a stop long enough to tour your chosen city. Popular stopovers between BOS and IAD include:

        • Norfolk International Airport

        • Newark Liberty International Airport

        • LaGuardia Airport

      How to find the cheapest flights from Logan International Airport (BOS) to Washington Dulles International Airport (IAD)

      • $122 is currently the lowest price for a one-way Logan International Airport to Washington Dulles International Airport flight. Return flights start at $212. These prices can change depending on demand and availability.

      • Book six months before travelling. After crunching the numbers on our calendar, this is how far you should book ahead to find cheap tickets from BOS to IAD.

      • Schedule your trip for May. That's the cheapest month for flights from Logan International Airport to Washington Dulles International Airport. If you're flexible on when you fly, try out the 'Whole month' tool to find the lowest price across every month.

      • Landing cheap flights from BOS to IAD is easy with Price Alerts. All you need to do is create one of these automatic alerts and we'll notify you when a new deal comes up.

      • Tailor your trip with filters. Pick your departure and arrival times, airlines and total journey duration. You can also sort the results by 'Best,' 'Fastest' or 'Cheapest' flights from Logan International Airport to Washington Dulles International Airport.

      Handy information about Logan International Airport (BOS)

      • The address for BOS is One Harborside Drive.

      • Of all flights departing from Logan International Airport, 73.94% arrive as scheduled at their destination.

      • Central Boston to Logan International Airport is approximately 5 kilometres. Depending on traffic, it'll take about 10 minutes to get there if you're driving, catching a cab or ride-sharing.

      • You can expect a trip time of around 25 minutes on public transport.

      • Need a convenient hotel near BOS? If you're boarding an early flight from Logan International Airport to Washington Dulles International Airport, these accommodation options will have you sleeping moments from your check-in counter:

      Arriving at Washington Dulles International Airport (IAD)

      Getting from Washington Dulles International Airport (IAD) to central Washington DC

      • You'll find IAD at 1 Saarinen Circle.

      • Washington Dulles International Airport is roughly 56 kilometres from the centre of Washington DC. The drive time takes about 50 minutes.

      • It'll take around 3 hours 25 minutes to get there using public transport.

      When to fly to Washington Dulles International Airport (IAD)

      • It's time to work out your travel dates for your flight from Logan International Airport to Washington Dulles International Airport. April is the most popular month to head to Washington DC. If you like a more low-key vibe, go in January.

      • When reserving your flight from Logan International Airport to Washington Dulles International Airport, think about the kind of weather you enjoy. July is the warmest month in Washington DC, with the temperature ranging from 19ºC (66ºF) to 33ºC (91ºF).

      • Look for cheap tickets from BOS to IAD in January if you like travelling in cooler conditions. Temperatures are at their lowest around then, ranging between -6ºC (21ºF) and 10ºC (50ºF) on average.

      Explore more of United States

      • New York is just one of the many cities in United States waiting to be discovered once you've seen the sights of Washington DC. Around 322 kilometres away to the north-east, top sights here include Statue of Liberty, Central Park and Empire State Building.

      • Philadelphia is another standout destination in United States and is around 193 kilometres north-east of Washington DC. No trip is complete without seeing Liberty Bell, Independence Hall and Philadelphia Museum of Art.

      Plan the rest of your trip from Boston to Washington D.C.

      Prices shown on this page are estimated lowest prices only. Found in the last 45 days.