£88 Cheap United flights from Washington to Boston (IAD→BOS)

View £88 flight on Tue, 17 Mar 2026Opens in a new window

  • Be in the know

    Get alerts if flight prices drop or rise*

  • Book smarter

    Save up to 25% on select hotels after you book a flight*

  • Earn twice

    Earn your airline miles on top of our rewards
    Sign in

United flights from Washington to Boston (IAD→BOS)

Prices were available within the past 7 days and start at £88 for one-way flights and £174 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Tue, 16 Jun - Thu, 2 Jul
IAD
Washington
BOS
Boston
£174 Return, found 23 hours ago
£174
Return
found 23 hours ago
Select United flight, departing Tue, 16 Jun from Washington to Boston, returning Thu, 2 Jul, priced at £174 found 23 hours ago
United
Wed, 17 Jun - Thu, 2 Jul
IAD
Washington
BOS
Boston
£181 Return, found 23 hours ago
£181
Return
found 23 hours ago
Select United flight, departing Wed, 17 Jun from Washington to Boston, returning Thu, 2 Jul, priced at £181 found 23 hours ago
United
Tue, 16 Jun - Thu, 18 Jun
IAD
Washington
BOS
Boston
£181 Return, found 23 hours ago
£181
Return
found 23 hours ago
Select United flight, departing Tue, 16 Jun from Washington to Boston, returning Thu, 18 Jun, priced at £181 found 23 hours ago
United
Tue, 24 Feb - Tue, 3 Mar
IAD
Washington
BOS
Boston
£182 Return, found 1 day ago
£182
Return
found 1 day ago
Select United flight, departing Tue, 24 Feb from Washington to Boston, returning Tue, 3 Mar, priced at £182 found 1 day ago
United
Wed, 4 Mar - Sat, 21 Mar
IAD
Washington
BOS
Boston
£188 Return, found 1 day ago
£188
Return
found 1 day ago
Select United flight, departing Wed, 4 Mar from Washington to Boston, returning Sat, 21 Mar, priced at £188 found 1 day ago
United
Wed, 17 Jun - Mon, 6 Jul
IAD
Washington
BOS
Boston
£188 Return, found 23 hours ago
£188
Return
found 23 hours ago
Select United flight, departing Wed, 17 Jun from Washington to Boston, returning Mon, 6 Jul, priced at £188 found 23 hours ago

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 centre is 7 minutes. Flights from £181
BOS
Logan Intl.
CheapestClosest
Average driving time to city centre7 min
Flights from £181

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

February is typically the cheapest month to fly

From £86 - £185 per traveller.
Flight from Washington to Boston route information
Origin airport
Washington Dulles Intl.
Destination airport
Logan Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, United
Popular airline
American Airlines
Distance
657 km
Average flight time
1 hour 37 mins

The Annual Holiday Sale

Members save up to 40% on hotels and holiday homes. Plan this year’s big trip and save.
Book now

Frequently asked questions

How much is a United Airlines flight from Washington Dulles Intl. Airport (IAD) to Logan Intl. Airport (BOS)?
Grab affordable round-trip United Airlines flights from £174 from IAD to BOS by organising your results from "Price (lowest to highest)" on Expedia. Or search for bargains from £88 for a one-way trip.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from IAD to BOS with United Airlines?
United Airlines flights to Boston tend to be cheaper in the low-season months of January and February. Whether you're after a one-way or a return ticket, you could score a better deal then.
Does United Airlines fly nonstop from Washington Dulles Intl. Airport (IAD) to Logan Intl. Airport (BOS)?
United Airlines has direct flights from Washington Dulles Intl. Airport (IAD) to Logan Intl. Airport (BOS), with 28 weekly departures. Just apply the "Nonstop" and "Airline" filters during your search on Expedia to show all direct United Airlines flights to BOS.
How long does it take to fly from IAD to BOS with United Airlines?
From wheels-up to touchdown, a direct United Airlines flight from Washington Dulles Intl. Airport (IAD) to Logan Intl. Airport (BOS) takes around 1h 35m.
Which day of the week has the most United Airlines flights from Washington Dulles Intl. Airport (IAD) to Logan Intl. Airport (BOS)?
Monday has the most United Airlines flights from Washington Dulles Intl. Airport (IAD) to Logan Intl. Airport (BOS). With 4 daily departures, this is the best day of the week to find something that will fit your plans.
What airports does United Airlines fly into in Boston?
United Airlines flights from Washington Dulles Intl. Airport (IAD) to Boston land at Logan Intl. Airport (BOS) and T.F. Green Airport (PVD). The primary Boston gateway serviced by this airline is BOS. It's always worth exploring flights arriving at nearby airports on Expedia as they may offer lower prices.
What type of plane does United Airlines fly from Washington Dulles Intl. Airport (IAD) to Logan Intl. Airport (BOS)?
You'll likely be seated on a Boeing 737-800 or a Boeing 737 MAX 8 when flying United Airlines from Washington Dulles Intl. Airport (IAD) to Logan Intl. Airport (BOS). However, keep in mind that a different plane may be assigned depending on operational factors.
Can I change or cancel my United Airlines flight from Washington Dulles Intl. Airport (IAD) to Logan Intl. Airport (BOS)?
Depending on your fare type, a fee is typically charged if you cancel or change your booking more than 24 hours after it's confirmed. To find plane tickets with more flexibility, select our "Changes included" and "No cancel fee" boxes while looking for flights. For more information on cancelling or modifying your reservation, go to "Trips," select your flight and click on "Manage Booking."

Explore a world of travel with Expedia

*Available to Expedia members.