$69 Cheap United flights Washington (IAD) to Boston (BOS)

Scoring cheap one-way United Airlines flights from IAD to BOS from $69 on Expedia couldn’t be easier — just filter by “Price (lowest to highest).” Or check out our affordable return fares from $137 for your next exciting vacation.**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.

January is one of the most affordable months to jet away to Boston with United Airlines. You could also find fantastic deals on one-way and return tickets in February.

Start searching one to three months ahead of your departure date to get cheap fares on United Airlines flights from Washington Dulles Intl. Airport (IAD) to Logan Intl. Airport (BOS). You can save 25% by booking your domestic flight 34 to 86 days in advance compared to last-minute reservations made 6 to 12 days out. You could also reduce costs by buying your fare on a Sunday, as it’s 6% cheaper on average than a Monday, the most expensive day to book.* Time it well, and you can enjoy significant savings on domestic journeys.*Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC’s global airline sales database.

Easily travel from Washington Dulles Intl. Airport (IAD) to Logan Intl. Airport (BOS) on any of United Airlines’s 28 direct weekly flights. Apply our “Nonstop” and “Airline” filters to find the United Airlines flight that’ll land at BOS at your preferred time.

Depart Washington Dulles Intl. Airport (IAD) for Logan Intl. Airport (BOS) on a direct United Airlines flight, and you’ll be in the air for approximately 1h 35m.

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 suit your schedule.

Jetting off from IAD at 8:20AM UTC-5, the earliest United Airlines flight to BOS lands at 9:55AM UTC-5. Traveling early means you’ll be less likely to experience delays.* Prefer to travel later? The last United Airlines flight from IAD to BOS departs at 10:24PM UTC-5 and touches down at 11:59PM UTC-5.*Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.

United Airlines flights from Washington Dulles Intl. Airport (IAD) to Boston land at Logan Intl. Airport (BOS) and T.F. Green Airport (PVD). The main Boston gateway served by this airline is BOS. It’s always worth comparing flights arriving at nearby airports on Expedia as there may be cheaper fares.

Journey from IAD to BOS with United Airlines and look forward to a range of perks including a rewarding loyalty program. When you book through Expedia as a United Mileage Plus and One Key™ member, you may also earn OneKeyCash™* to use on select future travel purchases.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

United Airlines generally uses Boeing 737-800 planes for flights from Washington Dulles Intl. Airport (IAD) to Logan Intl. Airport (BOS). This airline also operates the Boeing 737 MAX 8 on this route. Keep in mind that aircraft type can change depending on operational requirements, so the plane you catch could be different on the day.

Changes are usually free within 24 hours of booking, but your airline may add a charge after that. For more details about altering your flights, head to your “Trips,” select your flight and click on “Manage Booking.” If you want the freedom to change your plans without additional costs, tick the “Changes included” and “No cancel fee” filters when planning your trip.