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Dulles Intl

$71+ Cheap flights from Boston (BOS) to Dulles Intl (IAD)

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 2/7. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — IAD
Jan 27 — Feb 31
Mon 1/27
Mon 2/3
1 adult, Economy
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The best prices from Boston Logan Intl to Washington, D.C. Dulles Intl are usually found in January or August, booked 51 days in advance, depart on a Wednesday or Thursday and return on a Wednesday

Cheap flight deals from Boston to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) to Dulles Intl (IAD). 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 January 22, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$110
(Frontier)

One-way from

$71
(Frontier)

Popular in

April

Cheapest in

January

Average price

$217

Good round-trip deal

$344 or less

Good one-way deal

$161 or less
Provider with most accurate pricing for Boston Logan Intl-Washington, D.C. Dulles Intl flight deals.
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Provider most trusted by Cheapflights users for Boston Logan Intl-Washington, D.C. Dulles Intl flights.
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From Boston Logan Intl to Washington, D.C. Dulles Intl
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One-way flight from Boston Logan Intl to Washington, D.C. Dulles Intl
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Highest demand for flights based on searches. 8% potential increase in price ($26 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($7 potential savings vs. average RT price).
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Average for round-trip flights in January 2025
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Price to beat on a round-trip flight from Boston Logan Intl to Washington, D.C. Dulles Intl.
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Price to beat on a one-way flight from Boston Logan Intl to Washington, D.C. Dulles Intl.
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Find flight deals from Boston to Dulles Intl

Cheapest flights from Boston to Dulles Intl
Explore the most affordable flight options available from Boston to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 22, 2025.

This Frontier deal was found by Cheapflights users on 1/21. 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 2/266:00 amBOS - IAD
1 stop11h 13mFrontier
Thu 2/2710:25 pmIAD - BOS
1 stop11h 56mFrontier
Deal found 1/21$110
This United Airlines deal was found by Cheapflights users on 1/22. 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 2/77:28 pmBOS - IAD
Nonstop1h 46mUnited Airlines
Sun 2/910:24 pmIAD - BOS
Nonstop1h 35mUnited Airlines
Deal found 1/22$157
This Delta deal was found by Cheapflights users on 1/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/146:00 amBOS - IAD
1 stop5h 25mDelta
Mon 2/176:00 amIAD - BOS
1 stop6h 04mDelta
Deal found 1/22$247
This American Airlines deal was found by Cheapflights users on 1/22. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/26:32 pmBOS - IAD
1 stop5h 26mAmerican Airlines
Sun 4/65:00 amIAD - BOS
1 stop4h 16mAmerican Airlines
Deal found 1/22$253
This Mytrip deal was found by Cheapflights users on 1/22. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/195:07 pmBOS - IAD
3 stops18h 19mMultiple Airlines
Wed 2/268:25 amIAD - BOS
3 stops24h 48mMultiple Airlines
Deal found 1/22$272

Find flights from Boston to Dulles Intl within your budget

Customize your flight search to find flights from Boston to Dulles Intl 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 January 22, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

BostonWashington, D.C.

BOS - IAD

BOSIAD

Boston Logan Intl

Tue 2/4

6:00 am-11:47 am

1 stop5h 47m

Washington, D.C. Dulles Intl

Tue 3/4

5:45 pm-12:44 am

1 stop6h 59m

$108

BostonWashington, D.C.

BOS - IAD

BOSIAD

Boston Logan Intl

Sat 3/1

5:35 am-7:19 am

Nonstop1h 44m

Washington, D.C. Dulles Intl

Wed 3/5

8:45 am-10:20 am

Nonstop1h 35m

$147

BostonWashington, D.C.

BOS - IAD

BOSIAD

Boston Logan Intl

Fri 2/14

6:00 am-11:25 am

1 stop5h 25m

Washington, D.C. Dulles Intl

Sun 2/16

6:00 am-12:04 pm

1 stop6h 04m

$247

BostonWashington, D.C.

BOS - IAD

BOSIAD

Boston Logan Intl

Fri 3/14

6:00 am-1:22 pm

1 stop7h 22m

Washington, D.C. Dulles Intl

Mon 3/17

5:28 pm-10:36 pm

1 stop5h 08m

$253

BostonWashington, D.C.

BOS - IAD

BOSIAD

Boston Logan Intl

Thu 2/27

5:12 pm-12:34 pm

2 stops19h 22m

Washington, D.C. Dulles Intl

Mon 3/3

5:40 pm-4:12 pm

3 stops22h 32m

$270

BostonWashington, D.C.

BOS - IAD

BOSIAD

Boston Logan Intl

Sun 3/2

10:11 am-9:25 pm

1 stop11h 14m

$71

BostonWashington, D.C.

BOS - IAD

BOSIAD

Boston Logan Intl

Mon 3/10

7:36 pm-9:22 pm

Nonstop1h 46m

$79

BostonWashington, D.C.

BOS - IAD

BOSIAD

Boston Logan Intl

Tue 2/25

2:24 pm-11:26 am

3 stops21h 02m

$116

BostonWashington, D.C.

BOS - IAD

BOSIAD

Boston Logan Intl

Sun 2/2

5:20 am-11:51 am

1 stop6h 31m

$124

BostonWashington, D.C.

BOS - IAD

BOSIAD

Boston Logan Intl

Sun 6/8

11:31 am-8:25 pm

1 stop8h 54m

$126

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/21

Showing 1-10 of 11 results
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Compare providers for flights from Boston to Dulles Intl

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 Boston to Dulles Intl in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapTicketsDealPrice Accuracy3 starsTrust 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 Boston-Washington, D.C. Dulles Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Boston-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Boston-Washington, D.C. Dulles Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Boston-Washington, D.C. Dulles Intl Airport 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 Boston-Washington, D.C. Dulles Intl Airport 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 Boston to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Boston 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.

Travel insights for flights from Boston to Dulles Intl

Get recent, data-driven insights about flights from Boston to Dulles Intl including ideal travel times, pricing trends, and more.

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

Use this chart to determine the optimal time to book a round-trip flight from Boston to Dulles Intl. Price data was last updated on January 17, 2025.

The price you pay for your flight from Boston to Washington, D.C. Dulles Intl Airport may vary depending on when you book. For the best chance of a lower fare, look to book 51 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, August is the cheapest month in which you can book a flight from Boston to Washington, D.C. Dulles Intl Airport (average of $309). Flying from Boston to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $389). 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 BOS to IAD?

Find hourly flight availability from Boston to Dulles Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 22, 2025.

When flying from Boston to Washington, D.C. Dulles Intl Airport, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 40% versus a flight at noon.

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

Use this chart to determine the cheapest time to fly round-trip from Boston to Dulles Intl. Price data was last updated on December 16, 2024.

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

Weekly flight availability from Boston to Washington, D.C. Dulles Intl Airport

Explore weekly flight availability from Boston to Dulles Intl. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated January 22, 2025.

The most flights from BOS to IAD are scheduled on a Tuesday (17 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (13 on average).

Rainfall in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Washington, D.C. Dulles Intl Airport ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. Dulles Intl Airport when rainfall is around 2.6 in.

Temperature in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Washington, D.C. Dulles Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

Reviews of airlines servicing Dulles Intl

Get insights into the airlines that provide service to Dulles Intl. 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 Dulles Intl. Reviews last updated January 22, 2025.
Get a feel of what it's like to fly with Frontier, United Airlines and American Airlines from Boston to Washington, D.C. by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
8,514 reviews

Comfort

8.0

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Crew

8.6

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta
8.0
Very good
8,514 reviews
Delta
8.0
Very good
8,514 reviews

Comfort

8.0

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Crew

8.6

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

United Airlines
7.4
Good
8,975 reviews
Delta
8.0
Very good
8,514 reviews

Comfort

8.0

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Crew

8.6

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
8,514 reviews

Comfort

8.0

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Crew

8.6

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Frontier
6.1
Okay
3,442 reviews
Delta
8.0
Very good
8,514 reviews

Comfort

8.0

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Crew

8.6

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

Find useful and relevant information for your journey from Boston to Dulles Intl. 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 from for flights from Boston to Washington, D.C. Dulles Intl?

    If you book a flight to Washington, D.C. Dulles Intl from Boston, you will be flying from Logan Intl, which is the city’s only airport. Boston Logan Intl (BOS) is located 2.6 mi from the center of Boston. There are 14 flights from Logan Intl to Washington, D.C. Dulles Intl per day from 4 different airlines.

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

    According to our current data, Frontier ($110), United Airlines ($157), and Delta ($247) offers the cheapest pricing from Boston to Washington, D.C. Dulles Intl Airport. Users have found that Frontier is 61% cheaper than the other options available to this destination.

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

    $71 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on United Airlines and Delta, with prices starting from $79 and $124, respectively.

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

    Before booking your flight to Washington, D.C. Dulles Intl Airport from Boston, check out the most reliable airlines to get you to your destination on time: Egyptair (96%), Air China (94%), ANA( 93%).

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

    On average you can expect to pay $1,008 for a flight from Boston to Washington, D.C. Dulles Intl Airport. The cheapest flight overall is $103 while the most popular route, (Boston Logan Intl - Washington, D.C. Dulles Intl) is currently priced at $147.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Boston to Dulles Intl 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 Boston to Washington, D.C. Dulles Intl Airport?

    Currently, August is the cheapest month in which you can book a flight from Boston to Washington, D.C. Dulles Intl Airport (average of $309). Flying from Boston to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $389). 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?

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Top 4 airlines flying from Boston to Dulles Intl

Discover the top 4 airlines that operate flights from Boston to Dulles Intl. 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 January 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$46Average$85FlexibilityNo cancel feeOn-time65%
DeltaCheapest$85Average$222FlexibilityNo cancel feeOn-timeN/A
JetBlueCheapest$88Average$196FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$156Average$288FlexibilityNo cancel feeOn-time69%
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