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Washington, D.C.

$84+ Cheap flights from Boston (BOS) to Washington, D.C. (WAS)

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 2/24. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — WAS
Mar 5 — Mar 121
Thu 3/5
Thu 3/12
1 adult, Economy
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Find cheap flights from Boston to Washington, D.C. with Cheapflights

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”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

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Cheapflights Tip: The best prices from Boston Logan Intl to Washington, D.C. are usually found in March or February, booked 50 days in advance, depart on a Friday or Thursday and return on a Thursday

Cheap flight deals from Boston to Washington, D.C.

Cheapest flights from Boston to Washington, D.C.
Explore the most affordable flight options available from Boston to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 3, 2026.

This lastminute.com deal was found by Cheapflights users on 2/2. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/266:15 am
BOS
-
DCA
Nonstop1h 48m
JetBlue
Sun 3/17:00 am
DCA
-
BOS
Nonstop1h 30m
JetBlue
Deal found 2/2$159
This Orbitz deal was found by Cheapflights users on 2/1. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/712:42 pm
BOS
-
IAD
1 stop11h 54m
Frontier
Thu 4/95:34 pm
IAD
-
BOS
1 stop7h 52m
Frontier
Deal found 2/1$160
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/712:36 pm
BOS
-
IAD
1 stop11h 55m
Multiple Airlines
Mon 3/98:09 am
IAD
-
BOS
1 stop27h 39m
Multiple Airlines
Deal found 2/2$162
This American Airlines deal was found by Cheapflights users on 1/31. 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.
Sun 3/88:05 am
BOS
-
DCA
Nonstop1h 50m
American Airlines
Tue 3/1012:35 pm
DCA
-
BOS
Nonstop1h 37m
American Airlines
Deal found 1/31$162
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/54:22 pm
BOS
-
IAD
1 stop15h 02m
Multiple Airlines
Mon 3/98:09 am
IAD
-
BOS
1 stop27h 39m
Multiple Airlines
Deal found 2/2$163
This United Airlines deal was found by Cheapflights users on 1/31. 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 2/275:35 am
BOS
-
IAD
Nonstop1h 44m
United Airlines
Wed 3/48:36 am
IAD
-
BOS
1 stop4h 17m
United Airlines
Deal found 1/31$166
This Delta deal was found by Cheapflights users on 2/1. 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.
Thu 2/266:05 am
BOS
-
DCA
Nonstop2h 02m
Delta
Sun 3/17:00 am
DCA
-
BOS
Nonstop1h 36m
Delta
Deal found 2/1$166
This United Airlines deal was found by Cheapflights users on 2/1. 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 3/65:45 am
BOS
-
IAD
Nonstop1h 44m
United Airlines
Tue 3/1010:20 pm
IAD
-
BOS
Nonstop1h 37m
United Airlines
Deal found 2/1$167
This Delta deal was found by Cheapflights users on 2/3. 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.
Sun 3/17:30 am
BOS
-
DCA
Nonstop2h 01m
Delta
Tue 3/106:00 am
DCA
-
BOS
Nonstop1h 37m
Delta
Deal found 2/3$167
This Kiwi.com deal was found by Cheapflights users on 2/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/266:10 pm
BOS
-
IAD
2 stops13h 10m
Multiple Airlines
Mon 3/27:05 pm
IAD
-
BOS
1 stop28h 54m
Multiple Airlines
Deal found 2/1$170
This Cheapflightsfares deal was found by Cheapflights users on 2/1. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/136:15 am
BOS
-
DCA
Nonstop1h 46m
JetBlue
Sun 3/157:20 am
DCA
-
BOS
Nonstop1h 28m
JetBlue
Deal found 2/1$171
This American Airlines deal was found by Cheapflights users on 2/3. 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.
Fri 4/107:00 am
BOS
-
DCA
Nonstop1h 46m
American Airlines
Mon 4/138:55 pm
DCA
-
BOS
Nonstop1h 39m
American Airlines
Deal found 2/3$172

Find flight deals from Boston to Washington, D.C.

Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) to Washington, D.C. (WAS). 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 February 3, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$159
(lastminute.com)

One-way from

$84
(United Airlines)

Popular in

November

Cheapest in

March

Average price

$192

Good round-trip deal

$189 or less

Good one-way deal

$126 or less
Provider with most accurate pricing for Boston Logan Intl-Washington, D.C. (WAS) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Boston Logan Intl-Washington, D.C. (WAS) flights.
Search Deals
From Boston Logan Intl to Washington, D.C. (WAS)
Search Deals
One-way flight from Boston Logan Intl to Washington, D.C. (WAS)
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($26 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals
Price to beat on a round-trip flight from Boston Logan Intl to Washington, D.C. (WAS).
Search Deals
Price to beat on a one-way flight from Boston Logan Intl to Washington, D.C. (WAS).
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Boston to Washington, D.C. 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 February 3, 2026.
Use the filters below to find and compare flights from Boston to Washington, D.C. that are best for you.

Fly from

Boston

Fly to

Washington, D.C.

Route

Depart

Return

Price

BostonWashington, D.C.

BOS - IAD

BOSIAD

Boston Logan Intl

Fri 2/27

5:35 am-7:19 am

Nonstop1h 44m

Washington, D.C. Dulles Intl

Wed 3/4

8:36 am-12:53 pm

1 stop4h 17m

$166

BostonWashington, D.C.

BOS - DCA

BOSDCA

Boston Logan Intl

Mon 3/2

9:45 pm-11:43 pm

Nonstop1h 58m

Washington, D.C. Reagan-National

Fri 3/6

6:00 am-7:35 am

Nonstop1h 35m

$167

BostonWashington, D.C.

BOS - DCA

BOSDCA

Boston Logan Intl

Thu 2/26

6:15 am-8:03 am

Nonstop1h 48m

Washington, D.C. Reagan-National

Tue 3/3

7:59 pm-9:33 pm

Nonstop1h 34m

$167

BostonWashington, D.C.

BOS - IAD

BOSIAD

Boston Logan Intl

Sun 3/1

5:30 am-7:14 am

Nonstop1h 44m

Washington, D.C. Dulles Intl

Fri 3/6

10:20 pm-11:57 pm

Nonstop1h 37m

$167

BostonWashington, D.C.

BOS - DCA

BOSDCA

Boston Logan Intl

Sat 3/21

1:10 pm-2:58 pm

Nonstop1h 48m

Washington, D.C. Reagan-National

Mon 3/23

7:30 am-9:00 am

Nonstop1h 30m

$167

BostonWashington, D.C.

BOS - DCA

BOSDCA

Boston Logan Intl

Mon 3/2

8:15 pm-10:08 pm

Nonstop1h 53m

Washington, D.C. Reagan-National

Thu 3/5

8:30 am-10:08 am

Nonstop1h 38m

$167

BostonWashington, D.C.

BOS - IAD

BOSIAD

Boston Logan Intl

Mon 3/2

9:30 am-11:14 am

Nonstop1h 44m

Washington, D.C. Dulles Intl

Fri 3/6

10:20 pm-11:57 pm

Nonstop1h 37m

$167

BostonWashington, D.C.

BOS - DCA

BOSDCA

Boston Logan Intl

Thu 3/5

2:15 pm-4:04 pm

Nonstop1h 49m

Washington, D.C. Reagan-National

Mon 3/9

4:59 pm-6:36 pm

Nonstop1h 37m

$167

BostonWashington, D.C.

BOS - DCA

BOSDCA

Boston Logan Intl

Sun 3/1

7:30 am-9:31 am

Nonstop2h 01m

Washington, D.C. Reagan-National

Thu 3/5

8:30 am-10:08 am

Nonstop1h 38m

$167

BostonWashington, D.C.

BOS - IAD

BOSIAD

Boston Logan Intl

Mon 3/9

7:34 pm-9:16 pm

Nonstop1h 42m

Washington, D.C. Dulles Intl

Fri 3/13

10:20 pm-11:57 pm

Nonstop1h 37m

$167

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/31

Showing 1-10 of 60 results
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Compare providers for flights from Boston to Washington, D.C.

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 Washington, D.C. in February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star
OvagoPrice Accuracy2 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy2 starsTrust Score*2 stars
CheapOairPrice Accuracy3 starsTrust Score*3 stars
GotogatePrice Accuracy2 starsTrust Score*3 stars
Trip.comPrice 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 Boston-Washington, D.C. 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. flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Boston-Washington, D.C. flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Boston-Washington, D.C. 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. 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 Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. 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.

Cheapflights Insights

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

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

Use this chart to determine the optimal time to book a round-trip flight from Boston to Washington, D.C.. Price data was last updated on January 30, 2026.

The best time to book flights from Boston to Washington, D.C. is 50 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, March is the cheapest month in which you can book a flight from Boston to Washington, D.C. (average of $47). Flying from Boston to Washington, D.C. in October is currently the most expensive (average of $137). 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 WAS?

Find hourly flight availability from Boston to Washington, D.C.. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 3, 2026.

One of the essential ways to save on airfare from Boston to Washington, D.C. is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight in the evening could potentially save you up to 54% on airfare.

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

Use this chart to determine the cheapest time to fly round-trip from Boston to Washington, D.C.. Price data was last updated on January 31, 2026.

Travelers seeking maximum savings on their Boston to Washington, D.C. flight should consider departing on Thursday evenings when fares are most often at their lowest. Sunday 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.

Explore weekly flight availability from Boston to Washington, D.C.. 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 February 3, 2026.

The most flights from BOS to WAS are scheduled on a Monday (76 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (16 on average).

How often are flights from Boston to Washington, D.C. delayed?

About 19% of weekly flights between Boston and Washington, D.C. have experienced delays in the past year, with the average delay time being 130 minutes.

What is the most punctual flight time for Boston to Washington, D.C. flights?

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Saturday tends to have the lowest number of delays on this route, whereas Sunday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Boston to Washington, D.C. flights?

Over the last year, American Airlines have had the lowest number of delays on this route, with just 17% of flights being delayed.

The best insider tips for Boston to Washington, D.C. 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 Boston to Washington, D.C. trip
Our travel experts
Paul Rubio

Paul Rubio

Expert on Ethiopian Air and 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
Harriet Baskas

Harriet Baskas

Expert on United Airlines

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

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 Washington, D.C.

Get insights into the airlines that provide service to Washington, D.C.. 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 Washington, D.C.. Reviews last updated February 3, 2026.
See what other customers who have flown with Delta, United Airlines, and American Airlines from Boston to Washington, D.C. have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,138 reviews

Entertainment

7.8

Crew

8.5

Food

7.2

Overall

7.9

Boarding

8.1

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,138 reviews
Delta
7.9
Good
8,138 reviews

Entertainment

7.8

Crew

8.5

Food

7.2

Overall

7.9

Boarding

8.1

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,236 reviews
Delta
7.9
Good
8,138 reviews

Entertainment

7.8

Crew

8.5

Food

7.2

Overall

7.9

Boarding

8.1

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
American Airlines
7.2
Good
11,216 reviews
Delta
7.9
Good
8,138 reviews

Entertainment

7.8

Crew

8.5

Food

7.2

Overall

7.9

Boarding

8.1

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
JetBlue
7.2
Good
2,893 reviews
Delta
7.9
Good
8,138 reviews

Entertainment

7.8

Crew

8.5

Food

7.2

Overall

7.9

Boarding

8.1

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Spirit Airlines
6.3
Okay
8,407 reviews
Delta
7.9
Good
8,138 reviews

Entertainment

7.8

Crew

8.5

Food

7.2

Overall

7.9

Boarding

8.1

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

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

    Boston Logan Intl (BOS) is the airport you will fly out of if you book a flight from Boston to Washington, D.C.. You should not have trouble finding flights to Washington, D.C. from Logan Intl; the airport handles an average of 60 outbound flights to Washington, D.C. per day. You should also have plenty of airline options to choose from since 6 airlines have flights from the Boston airport to Washington, D.C.. It is only a 2.6 mi journey to Logan Intl (BOS) from Boston’s city center.

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

    United Airlines, Delta, and JetBlue can get you from Boston to Washington, D.C. in just under 1h 44m. Your travel time will be generally consistent. There are 411 mi between Boston and Washington, D.C.. Generally, flights for this route are nonstop.

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

    Spirit Airlines, at $42, was found to be the cheapest airline from Boston to Washington, D.C..Alternate airlines to your destination round-trip include Delta and JetBlue. Spirit Airlines is 80% cheaper than the average price of flights available within the next 90 days to this destination.

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

    One-way options have recently been found by users for as low as $68 on JetBlue. Other airlines that offer cheap prices include United Airlines from $78 and American Airlines from $78 one-way.

  • What are the most popular routes from Boston to Washington, D.C.?

    The most popular flight routes from Boston to Washington, D.C. are Boston Logan Intl - Baltimore/Washington, Boston Logan Intl - Washington, D.C. Dulles Intl and Boston Logan Intl - Washington, D.C. Reagan-National.

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

    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 Boston to Washington, D.C. on time: Air China (94%), ANA (88%), Ethiopian Air (86%).

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

    On average you can expect to pay $719 for a flight from Boston to Washington, D.C.. The cheapest flight overall is $94 while the most popular route, (Boston Logan Intl - Baltimore/Washington) is currently priced at $117.

  • Can I find deals for flights from Boston to Washington, D.C. that include hotel bookings?

    Yes. In addition to deals on Boston to Washington, D.C. flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Boston to Washington, D.C.?

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

  • Can I find deals for business class flights from Boston to Washington, D.C.?

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

    Currently, March is the cheapest month in which you can book a flight from Boston to Washington, D.C. (average of $47). Flying from Boston to Washington, D.C. in October is currently the most expensive (average of $137). 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 Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
Woodbridge
Tysons
Arlington
Owings Mills
Springfield
Silver Spring
Herndon
Fredericksburg
Hanover
Linthicum Heights
Rockville
Laurel
Towson
Upper Marlboro
Manassas
Largo
Bowie
McLean
Clinton

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 6 airlines flying from Boston to Washington, D.C.

Discover the top 6 airlines that operate flights from Boston to Washington, D.C.. 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 February 3, 2026.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$42Average$120FlexibilityNo cancel feeOn-time65%
DeltaCheapest$80Average$229FlexibilityNo cancel feeOn-timeN/A
JetBlueCheapest$97Average$271FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$118Average$257FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$147Average$253FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$162Average$279FlexibilityNo cancel feeOn-time63%

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