$69 Cheap Flights from Washington (IAD) to Boston (BOS)

View $69 flight on Thu, Sep 4, 2025Opens in a new window

Popular airlines from Washington Dulles Intl. Airport (IAD) to Logan International Airport (BOS)

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Cheap Flights from Washington to Boston (IAD-BOS)

Prices were available within the past 7 days and start at $69 for one-way flights and $137 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Wed, Sep 3 - Thu, Sep 4
IAD
Washington
BOS
Boston
$137 Roundtrip, found 3 hours ago
$137
Roundtrip
found 3 hours ago
Select United flight, departing Wed, Sep 3 from Washington to Boston, returning Thu, Sep 4, priced at $137 found 3 hours ago
United
Sat, Aug 30 - Thu, Sep 4
IAD
Washington
BOS
Boston
$144 Roundtrip, found 2 hours ago
$144
Roundtrip
found 2 hours ago
Select United flight, departing Sat, Aug 30 from Washington to Boston, returning Thu, Sep 4, priced at $144 found 2 hours ago
United
Wed, Sep 3 - Thu, Sep 4
IAD
Washington
BOS
Boston
$147 Roundtrip, found 3 hours ago
$147
Roundtrip
found 3 hours ago
Select United flight, departing Wed, Sep 3 from Washington to Boston, returning Thu, Sep 4, priced at $147 found 3 hours ago
United
Wed, Sep 3 - Tue, Sep 9
IAD
Washington
BOS
Boston
$152 Roundtrip, just found
$152
Roundtrip
just found
Select United flight, departing Wed, Sep 3 from Washington to Boston, returning Tue, Sep 9, priced at $152 just found
United
Tue, Sep 2 - Thu, Sep 4
IAD
Washington
BOS
Boston
$154 Roundtrip, found 8 hours ago
$154
Roundtrip
found 8 hours ago
Select United flight, departing Tue, Sep 2 from Washington to Boston, returning Thu, Sep 4, priced at $154 found 8 hours ago
United
Sat, Aug 30 - Wed, Sep 3
IAD
Washington
BOS
Boston
$154 Roundtrip, found 4 hours ago
$154
Roundtrip
found 4 hours ago
Select United flight, departing Sat, Aug 30 from Washington to Boston, returning Wed, Sep 3, priced at $154 found 4 hours ago
United
Mon, Sep 1 - Wed, Sep 3
IAD
Washington
BOS
Boston
$157 Roundtrip, found 8 hours ago
$157
Roundtrip
found 8 hours ago
Select United flight, departing Mon, Sep 1 from Washington to Boston, returning Wed, Sep 3, priced at $157 found 8 hours ago
Frontier Airlines
Sat, Aug 9 - Sat, Aug 30
IAD
Washington
BOS
Boston
$208 Roundtrip, found 10 hours ago
$208
Roundtrip
found 10 hours ago
Select Frontier Airlines flight, departing Sat, Aug 9 from Washington to Boston, returning Sat, Aug 30, priced at $208 found 10 hours ago
Delta
Sat, Aug 30 - Thu, Sep 4
IAD
Washington
BOS
Boston
$237 Roundtrip, found 2 hours ago
$237
Roundtrip
found 2 hours ago
Select Delta flight, departing Sat, Aug 30 from Washington to Boston, returning Thu, Sep 4, priced at $237 found 2 hours ago
American Airlines
Wed, Oct 15 - Sat, Oct 18
IAD
Washington
BOS
Boston
$253 Roundtrip, just found
$253
Roundtrip
just found
Select American Airlines flight, departing Wed, Oct 15 from Washington to Boston, returning Sat, Oct 18, priced at $253 just found

Find the cheapest month to fly from Washington (IAD) to Boston (BOS)

January is typically the cheapest month to fly

From $117 - $147 per traveler.

Graph displaying average flight prices per month

Alternative airports near Boston

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Logan Intl. BOS. Cheapest and Closest option available. Average driving time to city center is 7 minutes. Flights from $212
BOS
Logan Intl.
CheapestClosest
Average driving time to city center7 min
Flights from $212
Flights from Washington (IAD) to Boston (BOS)
Origin airport
Washington Dulles Intl.
Destination airport
Logan Intl.
Airlines serving
American Airlines, Delta, Frontier Airlines, United
Roundtrip price
$137
Distance
411 mi
Average flight time
3 hours 56 mins

Washington to Boston Flights

The cheapest times to fly from Washington to Boston

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Washington to Boston are during the month of September. You can find some of the cheapest flights from Washington to Boston with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Washington to Boston

Sunday is one of the best days to book for cheap flights from Washington to Boston: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Washington to Boston

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Washington to Boston in 2025. You can also book with separate airlines for your outbound and return journeys, from $69 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Washington to Boston flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Washington to Boston airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Washington Dulles Intl. Airport (IAD) to Logan Intl. Airport (BOS) cost?
Cheap round-trip flights from Washington Dulles Intl. Airport (IAD) to Logan Intl. Airport (BOS) start from $150. This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a United and JetBlue Airways flight leaving IAD on August 19 2025 and touching down at BOS. The price was last updated on July 23 2025 and has not changed since.
What is the cheapest month to fly from IAD to BOS?
The cheapest flights from IAD to BOS are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from Washington Dulles Intl. Airport (IAD) to Logan Intl. Airport (BOS)?
When jetting out of Washington Dulles Intl. Airport (IAD), you can catch a nonstop flight to Logan Intl. Airport (BOS) with United Airlines.
What is the cheapest airline that flies from IAD to BOS?
Right now, the cheapest airline operating one-way flights from IAD to BOS is United. You can book a seat on this route from $81. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from IAD on October 18 2025. Prices were last updated on July 23 2025 and have not changed since.
How many flights per day from Washington Dulles Intl. Airport (IAD) to Logan Intl. Airport (BOS)?
With, on average, 4 nonstop flights departing from Washington Dulles Intl. Airport (IAD) to Logan Intl. Airport (BOS) each day, you'll be taking off on vacation soon enough.
What are the most popular departure times for flights from Washington Dulles Intl. Airport (IAD) to Logan Intl. Airport (BOS)?
More passengers fly between IAD and BOS at 8 AM than at any other point in the day. Looking to skip the crowds? Travel outside of rush hours and it's possible you'll save on your fare as well.
What day of the week has the most flights from IAD to BOS?
Fly on a Friday if you're looking for the best choice of flights from Washington Dulles Intl. Airport (IAD) to Logan Intl. Airport (BOS).
What is the earliest flight from Washington Dulles Intl. Airport (IAD) to Logan Intl. Airport (BOS)?
Washington Dulles Intl. Airport (IAD)'s earliest flight to Logan Intl. Airport (BOS) takes off at approximately 8:20AM UTC-5. With a total flight time of 1h 35m, you'll touch down at around 9:55AM UTC-5.
How long does it take to fly from Washington Dulles Intl. Airport (IAD) to Logan Intl. Airport (BOS)?
It usually takes 1 hour and 35 minutes to fly the 410 mi from IAD to BOS.
What airline has the least delays from IAD to BOS?
Delta Air Lines has the best track record for on-time direct flights from Washington Dulles Intl. Airport (IAD) to Logan Intl. Airport (BOS), with an on-time rating of 100%. Use the Expedia App to see your flight status before you take off and receive notifications about any changes.
What is the best time to fly from Washington Dulles Intl. Airport (IAD) to Logan Intl. Airport (BOS)?
Opt for a flight from Washington Dulles Intl. Airport (IAD) to Logan Intl. Airport (BOS) that takes off before 3 PM to reduce the risk of cancellations. Departures after this time are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for Boston from Washington Dulles Intl. Airport (IAD)?
Board a direct flight from Washington Dulles Intl. Airport (IAD) to Boston and touch down at Logan Intl. Airport (BOS). Another convenient gateway to the city is T.F. Green Airport (PVD).
Is it cheaper to buy a plane ticket from Washington Dulles Intl. Airport (IAD) to Logan Intl. Airport (BOS) last-minute?
Last-minute bookings from IAD to BOS are typically more expensive. To secure the lowest prices, start looking for flights ahead of time. That being said, if you're flexible with your travel dates, it's possible to find a cheap ticket right before your trip.
Is it cheaper to book an IAD to BOS flight and hotel package?
Compared with arranging flights and hotels separately, booking an IAD to BOS flight and hotel package with Expedia could result in significant savings. What's more, managing everything in one place will take the hassle out of travel planning. Just secure your flights and select from our extensive range of stays, then tailor your trip with other add-ons like tours and car rentals.
Can I cancel or change the date of my flight from Washington Dulles Intl. Airport (IAD) to Logan Intl. Airport (BOS)?
If you reserved your IAD to BOS flight within the last 24 hours, you may be able to modify or cancel it without fees. Depending on the airline and the ticket type you purchased, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal if you want more information.

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