$90 Cheap United flights Washington (IAD) to Buffalo (BUF)

Finding cheap one-way United Airlines flights from IAD to BUF from $90 on Expedia is a breeze — just filter by “Price (lowest to highest).” Alternatively, check out our affordable round-trip fares from $179 for your next break.**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.

United Airlines flights to Buffalo are often cheaper in the off-peak months of January and February. Whether you’re after a return or one-way ticket, you could land a better deal then.

Start searching one to three months ahead of your travel date to find cheaper fares on United Airlines flights from Washington Dulles Intl. Airport (IAD) to Buffalo Niagara Intl. Airport (BUF). 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.* Nail your timing, 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.

United Airlines has direct flights from Washington Dulles Intl. Airport (IAD) to Buffalo Niagara Intl. Airport (BUF), with 21 weekly departures. Simply select the “Nonstop” and “Airline” filters while searching on Expedia to see all direct United Airlines flights to BUF.

Depart Washington Dulles Intl. Airport (IAD) for Buffalo Niagara Intl. Airport (BUF) on a direct United Airlines flight, and you’ll be in the sky for around 1h 27m.

If you’re looking for flexibility, Tuesday offers the most choice for United Airlines flights from Washington Dulles Intl. Airport (IAD) to Buffalo Niagara Intl. Airport (BUF). You can select from 3 different departures.

The first United Airlines flight from IAD to BUF departs at 12:35PM UTC-5, touching down at 2:02PM UTC-5. If you want to set off later, the last United Airlines flight leaves IAD at 10:10PM UTC-5 and lands at BUF at 11:31PM UTC-5. Flying earlier is generally a wise choice as morning flights are less likely to be canceled.**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.

Many United Airlines flights from Washington Dulles Intl. Airport (IAD) to Buffalo arrive at Buffalo Niagara Intl. Airport (BUF). This is the airline’s main entry point to this city. It’s worth browsing Expedia for flights to nearby airports such as Billy Bishop Toronto City Airport (YTZ), as tickets may be cheaper.

A rewarding loyalty program and the opportunity to collect points through United Mileage Plus are the start of the reasons to travel from IAD to BUF with United Airlines. Plus, when you join our One Key™ program, you can receive OneKeyCash™* on top of United Airlines’s loyalty program earnings. You can put it toward your future trips.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

United Airlines typically uses Embraer ERJ planes for flights from Washington Dulles Intl. Airport (IAD) to Buffalo Niagara Intl. Airport (BUF). This carrier also operates the Boeing 737-800 on this route. Keep in mind that aircraft type can vary due to operational demands, so the plane you catch could be different when you travel.

Depending on the type of fare you purchased, a fee generally applies if you change or cancel your booking more than 24 hours after it’s been confirmed. To find plane tickets with more flexibility, select our “No cancel fee” or “Changes included” filter when you search for flights. For additional information on canceling or modifying your reservation, visit “Trips,” select your flight and tick “Manage Booking.”