IAD - BOS

$89 Find Cheap Flights from Washington Dulles Airport to Boston

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Dulles Intl to Boston departing on 4/15. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Boston

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Boston, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Boston, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$174
Typical prices: $447-$233
United Airlines
Fri 5/8Sun 5/10
IAD - BOS • Non-stop
Cheapest one-way
$89
Typical prices: $99-$250
United Airlines
Wed 4/15
IAD - BOS • Non-stop
Advice from real travelers
AI-powered summary based on content written by travel experts. AI can make mistakes.
Use the AeroTrain at IAD for efficient terminal transfers.
Take the Silver Line bus from BOS for a free ride to downtown.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
Cheapest • from $174 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
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Airline reviews
Airline reviews
+1
Nonstop flights
You can fly direct with United Airlines. Average duration is 1h 46m
Direct flights
Direct flights
+1
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Direct flights
Direct flights
+1
Avoid delays
Most punctual • 82% on-time
Best time • Fewest delays
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $158 (round-trip)
Shortest trip • 3h 52m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 40% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 25% price drop
Most popular
Good to know
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Flight Deals

Cheap Flights from Dulles Intl to Boston (IAD-BOS)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Dulles Intl to Boston that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Dulles Intl to Boston

Fri, May 8 - Sun, May 10
United Airlines Logo
10:15 pm - 11:59 pm
IAD
-
BOS
1h 44mnonstop
United Airlines Logo
5:45 am - 7:24 am
BOS
-
IAD
1h 39mnonstop
$174United Airlines
Thu, Apr 30 - Sun, May 3
United Airlines Logo
8:35 am - 10:18 am
IAD
-
BOS
1h 43mnonstop
United Airlines Logo
5:45 am - 7:24 am
BOS
-
IAD
1h 39mnonstop
$176United Airlines
Wed, Apr 22 - Fri, Apr 24
United Airlines Logo
6:00 am - 10:15 am
IAD
-
BOS
4h 15m
1 stop
United Airlines Logo
6:25 pm - 11:25 pm
BOS
-
IAD
5h 00m
1 stop
$177United Airlines
Sat, May 16 - Tue, May 19
United Airlines Logo
10:15 pm - 11:59 pm
IAD
-
BOS
1h 44mnonstop
United Airlines Logo
5:45 am - 7:24 am
BOS
-
IAD
1h 39mnonstop
$179United Airlines
Fri, May 15 - Mon, May 18
Frontier Logo
7:27 pm - 9:12 am
IAD
-
BOS
13h 45m
1 stop
Frontier Logo
12:01 pm - 11:09 pm
BOS
-
IAD
11h 08m
1 stop
$180Frontier
Fri, May 8 - Tue, May 12
Frontier Logo
7:27 pm - 9:12 am
IAD
-
BOS
13h 45m
1 stop
Frontier Logo
6:00 am - 4:21 pm
BOS
-
IAD
10h 21m
1 stop
$181Frontier
Wed, May 13 - Wed, May 20
Frontier Logo
6:27 pm - 1:24 am
IAD
-
BOS
6h 57m
1 stop
Frontier Logo
12:01 pm - 11:09 pm
BOS
-
IAD
11h 08m
1 stop
$182Frontier
Fri, May 1 - Sun, May 3
United Airlines Logo
8:20 am - 12:51 pm
IAD
-
BOS
4h 31m
1 stop
United Airlines Logo
5:45 am - 7:24 am
BOS
-
IAD
1h 39mnonstop
$184United Airlines
Tue, May 19 - Tue, May 19
United Airlines Logo
8:35 am - 10:18 am
IAD
-
BOS
1h 43mnonstop
United Airlines Logo
7:26 pm - 11:25 pm
BOS
-
IAD
3h 59m
1 stop
$185United Airlines
Fri, May 8 - Wed, May 13
Multiple Airlines Logo
2:52 pm - 9:12 am
IAD
-
BOS
18h 20m
2 stops
Multiple Airlines Logo
12:01 pm - 11:09 pm
BOS
-
IAD
11h 08m
1 stop
$186Multiple Airlines
Booking Insights

KAYAK's insights & trends for Dulles Intl to Boston flights

Get data-powered insights and trends into flights from Dulles Intl to Boston to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Washington, D.C. Dulles Intl Airport to Boston?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Washington, D.C. Dulles Intl Airport to Boston departing in May.

What’s the cheapest day of the week to fly from Washington Dulles Airport to Boston?

The average price of all round-trip flights from Washington, D.C. Dulles Intl Airport to Boston clicked on KAYAK for each day over the last 12 months.

If your flying dates are flexible, you should consider flying to Boston on a Wednesday, as we generally find the cheapest rates on that day for this route. On the other hand, Sunday is the most expensive day to fly from Washington Dulles Airport to Boston. For your return ticket, we recommend flying on a Friday and avoiding Sundays for the best deals.

What is the cheapest month to fly from Washington, D.C. Dulles Intl Airport to Boston?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Washington, D.C. Dulles Intl Airport to Boston, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Washington, D.C. Dulles Intl Airport to Boston is January, where tickets cost $214 (return) on average. On the other hand, the most expensive months are May and August, where the average cost of round-trip tickets is $337 and $327 respectively.

Can I save money by flying with a layover from Washington, D.C. Dulles Intl Airport to Boston?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 1 stop layover the cheapest option at $286 on average.

How far in advance should I book a flight from Washington, D.C. Dulles Intl Airport to Boston?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Washington, D.C. Dulles Intl Airport to Boston, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Washington, D.C. Dulles Intl Airport to Boston, you should book around 3 weeks before departure, which saves you about 40% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 26 weeks before departure.

Expert advice

Expert advice for your flight from Dulles Intl to Boston

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Blane Bachelor

Blane Bachelor

Expert on BOS

Blane Bachelor is a journalist and editor specializing in travel and aviation who writes regularly for top global outlets. Born and raised in Florida, Blane has worked and lived in four countries, including the Netherlands, where she’s currently based with her family. Her favorite way to get to know a new destination is by running or riding a bike around town – or hearing a spooky ghost story about local history. She will always choose the window seat.

Stefanie Waldek

Stefanie Waldek

Expert on IAD

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Good to know

Low seasonFebruary
Cheapest flight$89
Best time to beat the crowds with an average 2% drop in price.
Most popular time to fly with an average 18% increase in price.
Flight from Washington Dulles Airport to Boston

When to book flights from Dulles Intl to Boston

Are your dates flexible? Find out the best times to travel from Dulles Intl to Boston based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Washington Dulles Airport to Boston flights

  • Are there pet relief areas in Washington Dulles Airport?

    There are pet relief areas in Washington Dulles Airport. You can find them in the concourses near the security area, as well as in the baggage claim area. Your animal can take a bathroom break and stretch.

  • Can I get a car rental at Boston Logan International Airport?

    If you're looking for a convenient way to get from your flight to your final destination, renting a car at Boston Logan International Airport is the way to go. After you land and claim your luggage, head to the car rental counter at the airport and choose from an array of vehicles including luxury cars, SUVs, minivans, crossovers, and trucks. Companies include Hertz, Alamo, National, and Avis.

  • How can I get downtown from Boston Logan International Airport?

    Getting downtown from Boston Logan International Airport is easy, and there are several options to choose from. The easiest way would be to take the Silver Line bus that runs between the airport and South Station in Boston. The Silver Line is an express bus that will drop you off at South Station in just under 30min—and it drops off right across the street from TD Garden. Another option is taking the subway. The MBTA has a stop at each terminal and they run 24h a day, 7 days a week.

  • How can I get to Washington Dulles Airport from the city center?

    Washington Dulles Airport is 26 miles from the city center. It takes approximately 50min to get to the airport through the Metrobus Route 5A which will take you to Wiehle-Reston East Metrorail Station. At the station, you will take the Silver Line Express bus to the station. In case you want a quicker means of transportation, taking a taxi will get you to the airport within 30-40min.

  • What is the cheapest flight from Washington, D.C. Dulles Intl Airport to Boston?

    In the last 3 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to Boston was $89 for a one-way ticket and $174 for a round-trip.

  • Do I need a passport to fly between Washington Dulles Airport and Boston?

    No, a passport isn't needed to fly from Washington Dulles Airport to Boston. However, local authorities might ask for an official ID.

  • Which airlines offer Wi-Fi service onboard planes from Washington Dulles Airport to Boston?

    JetBlue, Delta, American Airlines, and Lufthansa offer inflight Wi-Fi service on the Washington Dulles Airport to Boston flight route.

  • Which aircraft models fly most regularly from Washington Dulles Airport to Boston?

    The Boeing 737-900 is the aircraft model that flies most regularly on the Washington Dulles Airport to Boston flight route.

  • Which airline alliances offer flights from Washington Dulles Airport to Boston?

    SkyTeam, and Star Alliance are the airline alliances operating flights between Washington Dulles Airport and Boston, with SkyTeam being the most commonly used for this route.

  • On which days can I fly direct from Washington Dulles Airport to Boston?

    There are nonstop flights from Washington Dulles Airport to Boston on a daily basis.

  • Which is the best airline for flights from Washington, D.C. to Boston, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from Washington, D.C. to Boston are Delta and United Airlines. With an average price for the route of $248 and an overall rating of 7.9, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $290 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Washington Dulles Airport to Boston?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington Dulles Airport to Boston.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington Dulles Airport to Boston?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Boston from Washington Dulles Airport is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Washington Dulles Airport to Boston?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Boston with an airline and back to Washington Dulles Airport with another airline. Booking your flights between Washington Dulles Airport and BOS can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington Dulles Airport to Boston?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Boston from Washington Dulles Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Washington, D.C. Dulles Intl Airport to Boston

  • Looking for a cheap flight? 25% of our users found flights on this route for $160 or less one-way and $269 or less round-trip.
  • United Airlines offers a wide selection of in-flight entertainment options on their flights. United’s system, LiveTV, offers more than 10,000h of programming. With interactive seat-back video touchscreens and wireless connectivity available for select aircraft classes, customers can choose from a variety of exciting programming options that bring the best in entertainment to their flights.
  • Accessibility Services of Washington Dulles Airport (IAD) boasts a wide variety of wheelchairs, access and other transportation options so that you can get to your gate more quickly and easily.
  • If you're flying out of Boston Logan International Airport (BOS), the airport has a great selection of lounges for your comfort and relaxation. The American Airlines Admirals Club is one of the most popular places to unwind and relax, as it offers a wide variety of amenities, including Wi-Fi, newspapers and magazines, television, food and drinks, and business facilities.
  • Located in terminals B, C and E, the business center at Boston Logan International Airport offers a variety of services to help you stay on top of your work while you're away from the office. The business center has computers with printers available for use as well as photocopiers, scanners, and fax machines. You can also find complimentary Wi-Fi access at the terminals.
  • The Washington Dulles Airport Marriott offers the perfect place for you to rest your head before your flight. The hotel is conveniently located only 0.3 miles and offers a free shuttle to the airport.

Prefer to fly direct from Washington Dulles Airport to Boston?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Washington, D.C. Dulles Intl to Boston Logan Intl.
Find which airlines fly direct from Washington, D.C. Dulles Intl Airport to Boston Logan Intl Airport, which days they fly and book direct flights.

Direct departures

Washington, D.C. Dulles Intl to Boston Logan Intl

Monday

United Airlines

United Airlines

Tuesday

United Airlines

United Airlines

Wednesday

United Airlines

United Airlines

Thursday

United Airlines

United Airlines

Friday

United Airlines

United Airlines

Saturday

United Airlines

United Airlines

Sunday

United Airlines

United Airlines

See more direct flights

Direct returns

Boston Logan Intl to Washington, D.C. Dulles Intl

Monday

United Airlines

United Airlines

Tuesday

United Airlines

United Airlines

Wednesday

United Airlines

United Airlines

Thursday

United Airlines

United Airlines

Friday

United Airlines

United Airlines

Saturday

United Airlines

United Airlines

Sunday

United Airlines

United Airlines

See more direct flights

Reviews of the top 5 airlines serving from Dulles Intl to Boston

 
See real verified KAYAK customer reviews for airlines flying from Washington, D.C. to Boston. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Dulles Intl to Boston? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
DeltaOverall score based on 8366 reviews
7.9Comfort
8.1Boarding
8.5Crew
7.2Food
7.8Entertainment
Airline reviews

my mom urmila patel needed a wheelchair which was not available on the curbside. she needed to walk almost 50 meters inside (at the risk of falling) and then had to wait in line to get a wheelchair (this is not ok). Once obtained she had to seat in it for 30-45 minutes for someone to take her in thru the checkin process (which was fairly smooth and easy). the lady who helped her with her checkin process was very courteous and helpful

10.0 ExcellentViraj, Apr 2026
JFK - SFO
Read more Delta reviews

my mom urmila patel needed a wheelchair which was not available on the curbside. she needed to walk almost 50 meters inside (at the risk of falling) and then had to wait in line to get a wheelchair (this is not ok). Once obtained she had to seat in it for 30-45 minutes for someone to take her in thru the checkin process (which was fairly smooth and easy). the lady who helped her with her checkin process was very courteous and helpful

On the return flight, flight attendant Britt went out of her way to inform passengers that several of us had tight connections.

Fast, lovely scenery, great info on the Delta flight screen about landmarks we were flying over. Great landing!

Staff at the check-in counter were friendly, happy and helpful. They tagged our bags and sent us to “bag drop off” but were not very clear about where that was. The airport was busy we headed off in what we thought was the right direction until a gentleman waved us down and actually came after us. He was the baggage handler for Delta and recognized our “deer in the headlights “ look-he brought us to the right area (which was marked as the Southwest Airlines Drop Off) and sent us on our way. Wonderful guy, low key and working with a big smile on his face. Loved it. Loved him.

During the flight, the only refreshments provided were crackers and soft drinks; no substantial food was offered despite the international route. Furthermore, our initial flight was delayed, causing us to miss the connecting flight in Atlanta. The airline did not hold the connection, and we were informed that the next available flight is not for another 24 hours. While I am aware of alternative options via JetBlue, they operate out of JFK, which is not a viable solution for us as a resident of New Jersey.

Arlene was a great flight attendant. I also liked how one of the other flight attendants gave us a heads up about snacks and asked everyone to remove their headphones when it was their turn to order. Good idea.

Long flight but comfortable and not freezing as I have experienced on Hawaiian flights to the islands. They gave us blankets just in case. Nice touch.

I haven’t flown economy in over 20 years but it was not bad. Room by my feet for my bag and seat was roomy enough. Surprised in a good way.

The flight was delayed 90 minutes The Gate was wrong The Restroom on Aircraft was not clean There was a half used water bottle in my seat

Delta is always a wonderful experience. A clean plane and the crew is really friendly.

Good quick flight on a small but comfortable plane. I'm 6'3 and had plenty of space.

The flight was delayed so we were dead tired, and after that the turbulence was horrible. I was very scared.

Wifi took a while to kick in and we had a maintenance issue that took over 40 mins at the gate in Washington before pulling back

Very good. Because of the delays with my previous flight, I missed my connection, but I was able to book another flight through the United app easily.

Was happy we finally got upgraded in 1st class. The seat getting old. The cushiness need some improvement.

I like flying first class, and United has a nice one

United airlines has the best customer experience from booking to arrival. I always fly United airlines. The mileage program is excellent

Starlink wifi on the Embraer E175 is an excellent experience. I was able to connect and work from IAD all the way to approach into BTV.

7 hours delayed due to operational issues on United’s end. Basically laziness.

Short flight but an "eager to help" crew made the journey more enjoyable!

Flight was good wish there were more snacks options for such a long flight but stewardesses were very pleasant as was flight crew.

I was denied a plastic fork to eat my food and was told plastic forks are for paying customers who buy Jet Blue’s food. So I had to make a utensil out of a cup so nourish my body. Like a refugee. Because decency is dead.

I was especially impressed without efficiently the crew got passengers on and off. One of the stewards was slightly gruff, I thought. No big deal but that's what I noticed.

For the price point it was very good. Definitely leave on the earlier flights as it can become terribly crowded later in the day

Absolutely horrible. Flight was delayed 4 hours and they had no clue what was going on.

Onboard functioning wide-variety entertainment on a budget and having an open pantry is nice. Seats are not comfortable but go provide plenty of legroom for a 6'2" 260lbs man.

Even though the weather made a lot of flights become cancelled Jet Blue made the flight that was supposed to leave at 9 pm and we left at 12:15 am and I was so grateful- Thanks to the Senior Jet Blue Staff who made those decisions

Worst customer service ever experienced on the planet, dirty plane, no communication, and severe delays

Flight cancelled 2 hours prior to boarding. No explanation. No refunds.

Delayed by 1.5 hours. Terrible apologies, half hearted at best. It will be a LONG time until i book w Jet Blue again. Very disappointed.

The ticket price are reasonable, however, they can do better with the price on the luggage. Overall, I will continue using spirit.

That this is my second time the they cancel flights and they always wait until the last minute to let people know

The flight was supposed to leave at 6:22pm we are just now leaving the gate after deplaning twice at 1:07am.

Spirit is always late. Every single time. Always a different reason

They keep delaying and cancel at last moment and height was for you to get refund need to be in chat line for two hours. I complained to DOT. Never recommend this airline on Kayak please

First flight in along time with spirit! I’m honored to say this flight was excellent 😊

Spirit is awful. Do not fly spirit. Nothing but delays, cancellations.

Every connection was late but that meant I was not running from one to the next so that was a good thing. No one wants to miss a connection

Food and entertainment see irrelevant to rate them as that’s not really an option anymore. The flight was fast and friendly. The plane was immaculately clean.

it was great except the extra charges. for carry on ,seat choice, and wifi. these should all be included in flight charge. The extra charges are redicuolouse and because of that I will not be flying spirit again

It was an early flight and most people napped/slept and the crew let us which was nice.

The crew acted like they had never done this and kept barking passive aggressive orders at people. + the security line + the delay + sitting on the tarmac for 2 hours + none of the apps or signage updating with correct times

More inflight connection. And leg space is horrible. And the paying for baggage I'd ridiculous!!!

My flight was originally from SAT to MCO connecting from MCO to ORD. We got diverted to ATL and than Frontier staff there was sooo un helpful first they said they couldn’t give us any accommodation since our flight first got delayed that cancelled and now it’s 221am and I am still in ATL since they said they need to create a new flight my final destination is ORD and I have been delayed twice and cancelled. With no real help the frontier app didn’t work no email updates over all such a horrible experience

There's no seats that lean back with little leg space i wad uncomfortable the entire flight. Your charges for extra baggage is despicable and costly!!

Remind customers of the need to have passport or new ID for boarding.

Flight was canceled. Most upsetting was message from Kayak, stating that the flight was canceled and click with Kayak for details regarding rebook, refund details. THERE'S NO INFORMATION PROVIDED BY KAYAK EXCEPT THAT FLIGHT IS CANCELED. AND NOW THIS SURVEY TO FIND OUT HOW WAS THE FLIGHT !!!!!!!

The flight never took off and we spent 7 hours at the airport

Gate not determined until I got to the airport - hard to plan the trip to the airport.

Our flight was canceled. I will never use Kayak nor Frontier for travel again. The entire experience was a headache.

Everything you need to know for your flight from Dulles Intl to Boston

Information on your arrival and departure airports