S$141 Cheap Flights from Boston to Washington

View S$141 flight on Wed, 10 Dec, 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 40% on select hotels after you book a flight*
  • payments icon

    Earn twice

    Earn your airline miles on top of our rewards
    Sign in

Cheap Flights from Boston to Washington (BOS-IAD)

Prices were available within the past 7 days and start at S$141 for one-way flights and S$280 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Tue, 16 Sep - Tue, 30 Sep
BOS
Boston
IAD
Washington
S$280 Return, found 6 days ago
S$280
Return
found 6 days ago
Select United flight, departing Tue, 16 Sep from Boston to Washington, returning Tue, 30 Sep, priced at S$280 found 6 days ago
United
Sat, 13 Sep - Tue, 30 Sep
BOS
Boston
IAD
Washington
S$286 Return, found 6 days ago
S$286
Return
found 6 days ago
Select United flight, departing Sat, 13 Sep from Boston to Washington, returning Tue, 30 Sep, priced at S$286 found 6 days ago
United
Sat, 13 Sep - Mon, 29 Sep
BOS
Boston
IAD
Washington
S$293 Return, found 6 days ago
S$293
Return
found 6 days ago
Select United flight, departing Sat, 13 Sep from Boston to Washington, returning Mon, 29 Sep, priced at S$293 found 6 days ago
United
Sat, 30 Aug - Tue, 16 Sep
BOS
Boston
IAD
Washington
S$294 Return, found 6 days ago
S$294
Return
found 6 days ago
Select United flight, departing Sat, 30 Aug from Boston to Washington, returning Tue, 16 Sep, priced at S$294 found 6 days ago
United
Mon, 8 Sep - Tue, 23 Sep
BOS
Boston
IAD
Washington
S$299 Return, found 6 days ago
S$299
Return
found 6 days ago
Select United flight, departing Mon, 8 Sep from Boston to Washington, returning Tue, 23 Sep, priced at S$299 found 6 days ago
United
Sat, 30 Aug - Mon, 15 Sep
BOS
Boston
IAD
Washington
S$300 Return, found 6 days ago
S$300
Return
found 6 days ago
Select United flight, departing Sat, 30 Aug from Boston to Washington, returning Mon, 15 Sep, priced at S$300 found 6 days ago
United
Mon, 8 Sep - Sun, 21 Sep
BOS
Boston
IAD
Washington
S$305 Return, found 6 days ago
S$305
Return
found 6 days ago
Select United flight, departing Mon, 8 Sep from Boston to Washington, returning Sun, 21 Sep, priced at S$305 found 6 days ago
United
Wed, 3 Sep - Mon, 15 Sep
BOS
Boston
IAD
Washington
S$312 Return, found 6 days ago
S$312
Return
found 6 days ago
Select United flight, departing Wed, 3 Sep from Boston to Washington, returning Mon, 15 Sep, priced at S$312 found 6 days ago
United
Sat, 30 Aug - Sun, 14 Sep
BOS
Boston
IAD
Washington
S$313 Return, found 6 days ago
S$313
Return
found 6 days ago
Select United flight, departing Sat, 30 Aug from Boston to Washington, returning Sun, 14 Sep, priced at S$313 found 6 days ago
Delta
Tue, 23 Sep - Sat, 11 Oct
BOS
Boston
IAD
Washington
S$318 Return, found 6 days ago
S$318
Return
found 6 days ago
Select Delta flight, departing Tue, 23 Sep from Boston to Washington, returning Sat, 11 Oct, priced at S$318 found 6 days ago

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

September is typically the cheapest month to fly

From S$143 - S$227 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$279
Distance
657 km
Average flight time
1 hour 42 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!

Browse through dozens of options and rest assured that you’re seeing the best price guaranteed! Our friendly customer service representatives are here to serve you 24 hours day to provide assistance and answer any questions that you may have about booking your Boston to Chantilly trip. There’s simply no substitute for great prices suited to your travel needs and backed by excellent customer support.

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$280. 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.

Explore a world of travel with Expedia

*Available to Expedia members.