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$79+ Cheap flights from Dulles Intl (IAD) to Boston (BOS)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/12. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — BOS
Sep 13 — Sep 201
Sun 9/13
Sun 9/20
1 adult, Economy
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1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

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Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to Boston Logan Intl are usually found in January or December, booked 73 days in advance, depart on a Saturday or Wednesday and return on a Friday

Cheap flight deals from Dulles Intl to Boston

Cheapest flights from Dulles Intl to Boston
Explore the most affordable flight options available from Dulles Intl to Boston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 14, 2026.

This United Airlines deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/910:15 pm -
Nonstop1h 44m
Mon 9/146:00 pm -
1 stop4h 59m
Deal found 8/14$144
This United Airlines deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2110:15 pm -
Nonstop1h 44m
Wed 9/235:45 am -
Nonstop1h 35m
Deal found 8/13$147
This Frontier deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/78:04 pm -
1 stop13h 12m
Sat 11/1412:35 pm -
1 stop11h 53m
Deal found 8/11$148
This United Airlines deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/210:15 pm -
Nonstop1h 44m
Sun 9/65:45 am -
Nonstop1h 35m
Deal found 8/11$149
This United Airlines deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1010:15 pm -
Nonstop1h 44m
Mon 9/145:45 am -
Nonstop1h 35m
Deal found 8/14$151
This United Airlines deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/116:15 am -
1 stop3h 33m
Wed 9/162:28 pm -
Nonstop1h 41m
Deal found 8/13$152
This United Airlines deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/26:16 am -
1 stop5h 01m
Sat 9/57:23 pm -
Nonstop1h 45m
Deal found 8/11$159
This Frontier deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/28:39 pm -
1 stop12h 02m
Tue 9/1512:52 pm -
1 stop11h 18m
Deal found 8/12$160
This Frontier deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/68:39 pm -
1 stop12h 02m
Fri 9/1112:54 pm -
1 stop11h 16m
Deal found 8/12$161
This United Airlines deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/118:35 am -
1 stop5h 47m
Tue 9/157:00 pm -
1 stop3h 59m
Deal found 8/13$162

Find flight deals from Dulles Intl to Boston

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Boston (BOS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated August 14, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$147
(United Airlines)

One-way from

$79
(Super.com)

Popular in

June

Cheapest in

January

Average price

$290

Good round-trip deal

$272 or less

Good one-way deal

$170 or less
Provider with most accurate pricing for Washington, D.C. Dulles Intl-Boston Logan Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. Dulles Intl-Boston Logan Intl flights.
Search Deals
From Washington, D.C. Dulles Intl to Boston Logan Intl
Search Deals
One-way flight from Washington, D.C. Dulles Intl to Boston Logan Intl
Search Deals
Highest demand for flights based on searches. 21% potential increase in price ($82 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($11 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2026
Search Deals
Price to beat on a round-trip flight from Washington, D.C. Dulles Intl to Boston Logan Intl.
Search Deals
Price to beat on a one-way flight from Washington, D.C. Dulles Intl to Boston Logan Intl.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Dulles Intl to Boston that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 14, 2026.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Boston that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Boston

IAD Washington, D.C. Dulles Intl - BOS Boston Logan Intl

IADBOS

Washington, D.C. Dulles Intl

Mon 9/21

8:35 am-2:22 pm

1 stop5h 47m

Boston Logan Intl

Wed 9/23

9:30 am-11:11 am

Nonstop1h 41m

$157

Washington, D.C.Boston

IAD Washington, D.C. Dulles Intl - BOS Boston Logan Intl

IADBOS

Washington, D.C. Dulles Intl

Tue 9/22

8:35 am-2:22 pm

1 stop5h 47m

Boston Logan Intl

Tue 9/29

9:30 am-11:11 am

Nonstop1h 41m

$157
Quickest round-trip

Washington, D.C.Boston

IAD Washington, D.C. Dulles Intl - BOS Boston Logan Intl

IADBOS

Washington, D.C. Dulles Intl

Sat 9/5

10:15 pm-11:59 pm

Nonstop1h 44m

Boston Logan Intl

Sun 9/6

5:45 am-7:20 am

Nonstop1h 35m

$188

Washington, D.C.Boston

IAD Washington, D.C. Dulles Intl - BOS Boston Logan Intl

IADBOS

Washington, D.C. Dulles Intl

Sun 9/6

8:35 am-10:18 am

Nonstop1h 43m

Boston Logan Intl

Sun 9/6

7:00 pm-10:59 pm

1 stop3h 59m

$207

Washington, D.C.Boston

IAD Washington, D.C. Dulles Intl - BOS Boston Logan Intl

IADBOS

Washington, D.C. Dulles Intl

Mon 9/28

10:25 pm-12:09 am

Nonstop1h 44m

Boston Logan Intl

Tue 9/29

5:45 am-7:20 am

Nonstop1h 35m

$217

Washington, D.C.Boston

IAD Washington, D.C. Dulles Intl - BOS Boston Logan Intl

IADBOS

Washington, D.C. Dulles Intl

Tue 9/29

12:38 pm-5:52 pm

1 stop5h 14m

Boston Logan Intl

Thu 10/1

5:45 am-7:20 am

Nonstop1h 35m

$227

Washington, D.C.Boston

IAD Washington, D.C. Dulles Intl - BOS Boston Logan Intl

IADBOS

Washington, D.C. Dulles Intl

Sun 9/6

10:15 pm-11:59 pm

Nonstop1h 44m

Boston Logan Intl

Fri 9/11

7:00 pm-10:59 pm

1 stop3h 59m

$227

Washington, D.C.Boston

IAD Washington, D.C. Dulles Intl - BOS Boston Logan Intl

IADBOS

Washington, D.C. Dulles Intl

Wed 9/9

1:05 pm-2:50 pm

Nonstop1h 45m

Boston Logan Intl

Wed 9/16

2:28 pm-4:09 pm

Nonstop1h 41m

$234

Washington, D.C.Boston

IAD Washington, D.C. Dulles Intl - BOS Boston Logan Intl

IADBOS

Washington, D.C. Dulles Intl

Sat 9/19

8:35 am-2:22 pm

1 stop5h 47m

Boston Logan Intl

Wed 9/23

2:28 pm-4:09 pm

Nonstop1h 41m

$242

Washington, D.C.Boston

IAD Washington, D.C. Dulles Intl - BOS Boston Logan Intl

IADBOS

Washington, D.C. Dulles Intl

Sat 9/12

5:15 pm-11:58 pm

1 stop6h 43m

Boston Logan Intl

Sat 9/19

6:05 am-11:45 am

1 stop5h 40m

$247

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/12

Showing 1-10 of 24 resultsSorted by cheapest first
1
2
3

Compare providers for flights from Dulles Intl to Boston

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Dulles Intl to Boston in August.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Boston flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Washington, D.C. Dulles Intl Airport-Boston flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C. Dulles Intl Airport-Boston flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Boston flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Washington, D.C. Dulles Intl Airport-Boston flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Dulles Intl to Boston

Have a flexible travel schedule? Discover the best time to fly to Boston from Dulles Intl with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. Dulles Intl Airport to Boston

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

To ensure you get the cheapest price possible for a flight from Washington, D.C. Dulles Intl Airport to Boston, you should look to book at least 72 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Boston (average of $209). Flying from Washington, D.C. Dulles Intl Airport to Boston in June is currently the most expensive (average of $425). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from IAD to BOS?

Find hourly flight availability from Dulles Intl to Boston. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 14, 2026.

When flying from Washington, D.C. Dulles Intl Airport to Boston, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 28% versus a flight in the afternoon.

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

Use this chart to determine the cheapest time to fly round-trip from Dulles Intl to Boston. Price data was last updated on August 8, 2026.

Travelers seeking maximum savings on their Washington, D.C. Dulles Intl Airport to Boston flight should consider departing on Friday evenings when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

How much does it cost to fly round-trip from Washington, D.C. Dulles Intl Airport to Boston?

Airfare is below average for this route at the moment.

Washington, D.C. Dulles Intl Airport to Boston flights typically cost between $237 and $368 in September.
The cheapest round-trip price found within the last 5 days was $147 on United Airlines (Sep 21-Sep 23).

The best insider tips for Washington, D.C. Dulles Intl Airport to Boston flights

AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Washington, D.C. Dulles Intl Airport to Boston trip
Our travel experts
Paul Rubio

Paul Rubio

Expert on BOS

Travel journalist and photographer Paul Rubio is a Miami native (and current resident), who has lived in nine countries and traveled to 137. He is an expert in luxury travel, eco-travel, loyalty programs, hotels, airports and airlines. He is a contributing editor at AFAR, Condé Nast Traveler, LUXURY Magazine, and Palm Beach Illustrated.

Read more
Ramsey Qubein

Ramsey Qubein

Expert on IAD

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read more

Reviews of airlines servicing Boston

Get insights into the airlines that provide service to Boston. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Boston. Reviews last updated August 14, 2026.
Get a feel of what it's like to fly with Delta,United Airlines, andJetBlue from Washington, D.C. Dulles Intl Airport to Boston by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.8
Good
8,501 reviews

Entertainment

7.8

Boarding

8.1

Overall

7.8

Food

7.2

Crew

8.5

Comfort

7.8

Reviews

1 / 20
6.0
Good

Colin,Sep 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good
Delta
7.8
Good
8,501 reviews
Delta
7.8
Good
8,501 reviews

Entertainment

7.8

Boarding

8.1

Overall

7.8

Food

7.2

Crew

8.5

Comfort

7.8

Reviews

1 / 20
6.0
Good

Colin,Sep 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good
United Airlines
7.4
Good
10,108 reviews
Delta
7.8
Good
8,501 reviews

Entertainment

7.8

Boarding

8.1

Overall

7.8

Food

7.2

Crew

8.5

Comfort

7.8

Reviews

1 / 20
6.0
Good

Colin,Sep 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good
JetBlue
7.1
Good
3,037 reviews
Delta
7.8
Good
8,501 reviews

Entertainment

7.8

Boarding

8.1

Overall

7.8

Food

7.2

Crew

8.5

Comfort

7.8

Reviews

1 / 20
6.0
Good

Colin,Sep 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to Boston. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Boston from Washington, D.C. Dulles Intl?

    Boston Logan Intl (BOS), located 2.6 mi from the city center, is the airport you fly into when you book flights from Washington, D.C. Dulles Intl to Boston. 3 airlines have flights to Logan Intl from Washington, D.C. Dulles Intl on a regular basis. Booking flights from Washington, D.C. Dulles Intl to Boston Logan Intl should not be difficult; the airport handles an average of 14 inbound flights from Washington, D.C. Dulles Intl per day.

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

    For as low as $157, United Airlines can have you in Boston from Washington, D.C. Dulles Intl Airport in 5h 47m. The distance between Washington, D.C. Dulles Intl Airport and Boston is about 411 mi.

  • What are the cheapest airlines flying from Washington, D.C. Dulles Intl Airport to Boston round-trip?

    Our cheapest airline available from Washington, D.C. Dulles Intl Airport to Boston is Delta. Our recent data shows that you can find tickets from as low as $121 on this airline. Additional options worth looking into are JetBlue and United Airlines, starting at $137 and $157 round-trip. Delta is 60% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Washington, D.C. Dulles Intl Airport to Boston one-way?

    The cheapest airline one-way is United Airlines, with whom users have recently found tickets for as low as $85. However, be on the lookout for offers from JetBlue and American Airlines, as they are both options that can get you from Washington, D.C. Dulles Intl Airport to Boston for a low price.

  • What are the most reliable airlines from Washington, D.C. Dulles Intl Airport to Boston?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Washington, D.C. Dulles Intl Airport to Boston on time: Egyptair (85%), Avianca (84%), Republic Airways (78%).

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

    On average you can expect to pay $515 for a flight from Washington, D.C. Dulles Intl Airport to Boston. The cheapest flight overall is $104 while the most popular route, (Washington, D.C. Dulles Intl - Boston Logan Intl) is currently priced at $132.

  • Can I find deals for flights from Dulles Intl to Boston that include hotel bookings?

    Yes. In addition to deals on Dulles Intl to Boston flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Dulles Intl to Boston?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dulles Intl to Boston.

  • Can I find deals for business class flights from Dulles Intl to Boston?

    Yes. Cheapflights offers flight deals from Dulles Intl to Boston by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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

    Currently, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Boston (average of $209). Flying from Washington, D.C. Dulles Intl Airport to Boston in June is currently the most expensive (average of $425). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Boston?

Book flights to Boston if you plan to visit one of these locations
Waltham
Randolph
Cambridge
Concord
Brockton
Seekonk
Cranston
Dedham
Warwick
Peabody
Auburn
Chelsea
York Beach
Londonderry
Swansea
Revere
Fitchburg
North Falmouth
Braintree
Sandwich

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Top 3 airlines flying from Dulles Intl to Boston

Discover the top 3 airlines that operate flights from Dulles Intl to Boston. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 14, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$121Average$248FlexibilityNo cancel feeOn-timeN/A
JetBlueCheapest$137Average$232FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$157Average$308FlexibilityNo cancel feeOn-time69%

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