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

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

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

  • Plan, book, fly with confidence

  • trending down icon

    Be in the know

    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon

    Book smarter

    Save up to 30% on select hotels after you book a flight*
  • one key icon

    Earn twice

    Earn your airline miles on top of our OneKeyCash
    Learn about One Key

Cheap Flights from Boston to Washington (BOS-IAD)

Prices were available within the past 7 days and start at $69 for one-way flights and $131 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Sat, Nov 8 - Wed, Nov 12
BOS
Boston
IAD
Washington
$131 Roundtrip, found 4 days ago
$131
Roundtrip
found 4 days ago
Select United flight, departing Sat, Nov 8 from Boston to Washington, returning Wed, Nov 12, priced at $131 found 4 days ago
United
Sat, Aug 30 - Thu, Sep 4
BOS
Boston
IAD
Washington
$144 Roundtrip, found 1 hour ago
$144
Roundtrip
found 1 hour ago
Select United flight, departing Sat, Aug 30 from Boston to Washington, returning Thu, Sep 4, priced at $144 found 1 hour ago
United
Thu, Sep 4 - Tue, Sep 9
BOS
Boston
IAD
Washington
$152 Roundtrip, found 1 hour ago
$152
Roundtrip
found 1 hour ago
Select United flight, departing Thu, Sep 4 from Boston to Washington, returning Tue, Sep 9, priced at $152 found 1 hour ago
United
Sat, Aug 30 - Thu, Sep 4
BOS
Boston
IAD
Washington
$154 Roundtrip, found 1 hour ago
$154
Roundtrip
found 1 hour ago
Select United flight, departing Sat, Aug 30 from Boston to Washington, returning Thu, Sep 4, priced at $154 found 1 hour ago
United
Wed, Sep 3 - Thu, Sep 4
BOS
Boston
IAD
Washington
$157 Roundtrip, found 10 hours ago
$157
Roundtrip
found 10 hours ago
Select United flight, departing Wed, Sep 3 from Boston to Washington, returning Thu, Sep 4, priced at $157 found 10 hours ago
United
Tue, Sep 2 - Thu, Sep 4
BOS
Boston
IAD
Washington
$158 Roundtrip, found 8 hours ago
$158
Roundtrip
found 8 hours ago
Select United flight, departing Tue, Sep 2 from Boston to Washington, returning Thu, Sep 4, priced at $158 found 8 hours ago
United
Sat, Aug 30 - Sun, Aug 31
BOS
Boston
IAD
Washington
$159 Roundtrip, found 10 hours ago
$159
Roundtrip
found 10 hours ago
Select United flight, departing Sat, Aug 30 from Boston to Washington, returning Sun, Aug 31, priced at $159 found 10 hours ago
Frontier Airlines
Thu, Jul 31 - Sat, Aug 2
BOS
Boston
IAD
Washington
$218 Roundtrip, found 1 hour ago
$218
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Thu, Jul 31 from Boston to Washington, returning Sat, Aug 2, priced at $218 found 1 hour ago
Delta
Sun, Aug 31 - Fri, Sep 5
BOS
Boston
IAD
Washington
$237 Roundtrip, found 1 hour ago
$237
Roundtrip
found 1 hour ago
Select Delta flight, departing Sun, Aug 31 from Boston to Washington, returning Fri, Sep 5, priced at $237 found 1 hour ago
American Airlines
Thu, Oct 30 - Sun, Nov 2
BOS
Boston
IAD
Washington
$253 Roundtrip, just found
$253
Roundtrip
just found
Select American Airlines flight, departing Thu, Oct 30 from Boston to Washington, returning Sun, Nov 2, priced at $253 just found

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

January is typically the cheapest month to fly

From $117 - $147 per traveler.

Graph displaying average flight prices per month

Alternative airports near Washington

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

Select flight to Ronald Reagan Washington National DCA. Cheapest and Closest option available. Average driving time to city center is 8 minutes. Flights from $212
DCA
Ronald Reagan Washington National
CheapestClosest
Average driving time to city center8 min
Flights from $212
Flights from Boston (BOS) to Washington (IAD)
Origin airport
Logan Intl.
Destination airport
Washington Dulles Intl.
Airlines serving
American Airlines, Delta, Frontier Airlines, United
Roundtrip price
$130
Distance
411 mi
Average flight time
1 hour 41 mins

Boston to Washington Flights

The cheapest times to fly from Boston to Washington

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 Boston to Washington are during the month of November. You can find some of the cheapest flights from Boston to Washington with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Boston to Washington

Sunday is one of the best days to book for cheap flights from Boston to Washington: 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 Boston to Washington

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 Boston to Washington 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 Boston to Washington 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 Boston to Washington 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 Logan Intl. Airport (BOS) to Washington Dulles Intl. Airport (IAD) cost?
Find cheap return fares from Logan Intl. Airport (BOS) to Washington Dulles Intl. Airport (IAD) starting at $150. Snag a seat and set off on your next adventure. 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 BOS on August 9 2025 and touching down at IAD. The price was last updated on July 23 2025 and has not changed since.
What is the cheapest month to fly from BOS to IAD?
The cheapest flights from BOS to IAD 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 Logan Intl. Airport (BOS) to Washington Dulles Intl. Airport (IAD)?
You can fly directly from Logan Intl. Airport (BOS) to Washington Dulles Intl. Airport (IAD) on a United Airlines flight.
What is the cheapest airline that flies from BOS to IAD?
Jet off from BOS to IAD with United. This carrier currently offers the cheapest one-way fare for this route, starting from $81. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from BOS on October 18 2025. Prices were last updated on July 23 2025 and have not changed since.
How many flights per day from Logan Intl. Airport (BOS) to Washington Dulles Intl. Airport (IAD)?
Every day on average, 4 nonstop flights operate from Logan Intl. Airport (BOS) to Washington Dulles Intl. Airport (IAD). Choose the departure date that works for you.
What are the most popular departure times for flights from Logan Intl. Airport (BOS) to Washington Dulles Intl. Airport (IAD)?
More travelers fly between BOS and IAD at 9 AM than at any other point in the day. Looking to skip the crowds? Consider flying outside peak hours and it's possible you'll save on your fare as well.
What day of the week has the most flights from BOS to IAD?
Friday has the most flights from Logan Intl. Airport (BOS) to Washington Dulles Intl. Airport (IAD). Consider traveling on this day and you'll have a greater chance of finding a departure that fits your itinerary.
What is the earliest flight from Logan Intl. Airport (BOS) to Washington Dulles Intl. Airport (IAD)?
Logan Intl. Airport (BOS)'s first flight to Washington Dulles Intl. Airport (IAD) departs at approximately 5:45AM UTC-5. With a travel time of 1h 46m, you'll land at around 7:31AM UTC-5.
How long does it take to fly from Logan Intl. Airport (BOS) to Washington Dulles Intl. Airport (IAD)?
Flights from BOS to IAD have an average travel time of 1 hour and 45 minutes. The distance between the two is 410 mi.
What airline has the least delays from BOS to IAD?
With 100% of journeys usually landing on schedule, Lufthansa has the best on-time performance for direct flights from Logan Intl. Airport (BOS) to Washington Dulles Intl. Airport (IAD). To check your flight status and get notifications if anything changes, use the Expedia App.
What is the best time to fly from Logan Intl. Airport (BOS) to Washington Dulles Intl. Airport (IAD)?
Book a flight from Logan Intl. Airport (BOS) to Washington Dulles Intl. Airport (IAD) that leaves before 3 PM to reduce the likelihood of delays. Departures after this time have a 22% higher chance of being canceled, on average.**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 Washington from Logan Intl. Airport (BOS)?
You can arrive at any one of these Washington airports following your direct flight from Logan Intl. Airport (BOS):

  • Ronald Reagan Washington National Airport (DCA)
  • Baltimore Washington Intl. Thurgood Marshall Airport (BWI)
  • Washington Dulles Intl. Airport (IAD)

Is it cheaper to buy a plane ticket from Logan Intl. Airport (BOS) to Washington Dulles Intl. Airport (IAD) last-minute?
Booking your flight from BOS to IAD shortly before your journey is generally more expensive. But if you're flexible with your schedule, you could land a cheap last-minute fare.
Is it cheaper to book a BOS to IAD flight and hotel package?
Compared with arranging flights and hotels separately, booking a BOS to IAD flight and hotel package with Expedia could lead to significant savings. Better yet, having it all in one place will take the stress out of planning your trip. Just secure your flights and choose from our wide range of stays, then customize your trip with extras like activities, tours and car rentals.
Can I cancel or change the date of my flight from Logan Intl. Airport (BOS) to Washington Dulles Intl. Airport (IAD)?
Typically, you can reschedule or cancel your BOS to IAD flight. However, there may be additional fees, especially if your booking was made more than 24 hours ago. Check your itinerary for the airline's fees and rules on flight changes, or if you need more information, visit our Customer Service portal.

Explore a world of travel with Expedia

*Available to One Key members.