S$124 Cheap Flights from Boston to Washington

View S$124 flight on Fri, 22 Aug, 2025Opens in a new window

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

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Cheap Flights from Boston to Washington (BOS-IAD)

Prices were available within the past 7 days and start at S$124 for one-way flights and S$238 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Fri, 22 Aug - Wed, 27 Aug
BOS
Boston
IAD
Washington
S$238 Return, found 1 day ago
S$238
Return
found 1 day ago
Select United flight, departing Fri, 22 Aug from Boston to Washington, returning Wed, 27 Aug, priced at S$238 found 1 day ago
United
Fri, 22 Aug - Wed, 27 Aug
BOS
Boston
IAD
Washington
S$250 Return, found 1 day ago
S$250
Return
found 1 day ago
Select United flight, departing Fri, 22 Aug from Boston to Washington, returning Wed, 27 Aug, priced at S$250 found 1 day ago
United
Tue, 5 Aug - Wed, 6 Aug
BOS
Boston
IAD
Washington
S$252 Return, found 6 days ago
S$252
Return
found 6 days ago
Select United flight, departing Tue, 5 Aug from Boston to Washington, returning Wed, 6 Aug, priced at S$252 found 6 days ago
United
Wed, 20 Aug - Wed, 27 Aug
BOS
Boston
IAD
Washington
S$253 Return, found 3 days ago
S$253
Return
found 3 days ago
Select United flight, departing Wed, 20 Aug from Boston to Washington, returning Wed, 27 Aug, priced at S$253 found 3 days ago
United
Tue, 26 Aug - Thu, 28 Aug
BOS
Boston
IAD
Washington
S$265 Return, found 4 days ago
S$265
Return
found 4 days ago
Select United flight, departing Tue, 26 Aug from Boston to Washington, returning Thu, 28 Aug, priced at S$265 found 4 days ago
Delta
Fri, 22 Aug - Wed, 27 Aug
BOS
Boston
IAD
Washington
S$272 Return, found 1 day ago
S$272
Return
found 1 day ago
Select Delta flight, departing Fri, 22 Aug from Boston to Washington, returning Wed, 27 Aug, priced at S$272 found 1 day ago
United
Fri, 22 Aug - Wed, 27 Aug
BOS
Boston
IAD
Washington
S$282 Return, found 1 day ago
S$282
Return
found 1 day ago
Select United flight, departing Fri, 22 Aug from Boston to Washington, returning Wed, 27 Aug, priced at S$282 found 1 day ago
Delta
Tue, 26 Aug - Thu, 28 Aug
BOS
Boston
IAD
Washington
S$285 Return, found 4 days ago
S$285
Return
found 4 days ago
Select Delta flight, departing Tue, 26 Aug from Boston to Washington, returning Thu, 28 Aug, priced at S$285 found 4 days ago
United
Sat, 2 Aug - Tue, 5 Aug
BOS
Boston
IAD
Washington
S$290 Return, found 2 days ago
S$290
Return
found 2 days ago
Select United flight, departing Sat, 2 Aug from Boston to Washington, returning Tue, 5 Aug, priced at S$290 found 2 days ago
American Airlines
Tue, 26 Aug - Thu, 28 Aug
BOS
Boston
IAD
Washington
S$327 Return, found 4 days ago
S$327
Return
found 4 days ago
Select American Airlines flight, departing Tue, 26 Aug from Boston to Washington, returning Thu, 28 Aug, priced at S$327 found 4 days ago

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

January is typically the cheapest month to fly

From S$149 - S$187 per traveller.

Graph displaying average flight prices per month

Boston to Washington route information
Origin airport
Logan Intl.
Destination airport
Washington Dulles Intl.
Return price
S$237
Distance
657 km
Average flight time
1 hour 41 mins

Flights from Boston to Chantilly

There are several airlines that operate frequent flights from Boston (BOS) to Washington D.C. (IAD) including

The earliest flight leaves Logan Intl. Airport at 05:40 and arrives at Washington Dulles Intl. Airport at 07:17. The last flight of the day departs Boston at 19:41 and arrives at Washington D.C. at 21:21.

The flight distance from Boston to Washington D.C. is about 666 km, the shortest flight is 01 hours 32 minutes with United Airlines."

Expedia lets you search across the largest number of airlines and Chantilly flights, which means that you’ll be able to find a great flight deal at the perfect travel date and time. Our simple-to-use booking engine makes looking for terrific bargains easy and hassle-free; just enter your travel dates and departure city, and let Expedia do the rest! Adjust your travel dates and explore connecting flights to find an even better deal on your Boston Chantilly flight!

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Combine your Chantilly flight with a hotel and/or car rental for a package deal designed to save you even more money! Discover additional savings by booking in advance or find a last minute deal. There are tons of ways to save on your flights from Boston to Chantilly with Expedia. Use us as your stop travel destination and have the confidence that you’re getting a bargain!

Frequently asked questions

How much is a flight from BOS to Dulles Intl. Airport?
The lowest price advertised for a round-trip journey between BOS and Dulles Intl. Airport is S$238. But you better move fast. This figure is based on fares quoted within the last 7 days on Expedia for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Logan Intl. Airport (BOS) to IAD?
This can differ between airlines, as each has its own set of terms and conditions. Visit the Customer Service Portal, where you'll find simple instructions on how to cancel your flight online.
How do I find cheap flights from BOS to Dulles Intl. Airport that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for BOS to Dulles Intl. Airport flights, you'll see a "no change fees" filter for you to select.
How far is the flight from BOS to Dulles Intl. Airport?
With a flight distance of 660 kilometres, it's just a hop from Logan Intl. Airport (BOS) to Dulles Intl. Airport. It might be a quick flight, but it's still worth bringing something to keep you busy on board.
Which airlines fly direct from BOS to Washington Dulles Intl. Airport (IAD)?
United Airlines (UA) will take you from BOS to IAD safely and comfortably. You can choose from 121 flights every month on this route.
Are BOS to Dulles Intl. Airport flight tickets cheaper when they're purchased at the last minute?
It is possible to score an amazing last-minute deal from BOS to IAD, but it can also be hit-or-miss. As many airlines advertise prices up to 12 months in advance, it's worthwhile keeping an eye on fares early and being ready to book when you spot a good bargain. Expedia compares carrier prices and updates flight deals all the time, so you can feel confident knowing you're always seeing the latest offers.

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