$259 Cheap United flights Washington (DCA) to Buffalo (BUF)

View $259 flight on Sun, Oct 26, 2025Opens in a new window

$259 Cheap United flights Washington (DCA) to Buffalo (BUF)

Prices were available within the past 7 days and start at $259 for one-way flights and $369 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Fri, Nov 28 - Thu, Dec 4
DCA
Washington
BUF
Buffalo
$369 Roundtrip, found 1 day ago
$369
Roundtrip
found 1 day ago
Select United flight, departing Fri, Nov 28 from Washington to Buffalo, returning Thu, Dec 4, priced at $369 found 1 day ago
Flights from Washington (DCA) to Buffalo (BUF)
Origin airport
Ronald Reagan Washington National
Destination airport
Buffalo Niagara Intl.
Airlines serving
American Airlines, Delta, JetBlue Airways, Southwest Airlines, United
Popular airline
JetBlue Airways
Distance
295 mi
Average flight time
1 hour 22 mins

Frequently asked questions

How much is a United Airlines flight from Ronald Reagan Washington National Airport (DCA) to Buffalo Niagara Intl. Airport (BUF)?
Landing cheap one-way United Airlines flights from DCA to BUF from $259 on Expedia couldn't be simpler — just filter by "Price (lowest to highest)." Alternatively, check out our affordable return fares from $369 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.
What is the cheapest month to fly from DCA to BUF with United Airlines?
Search for one-way or return flights to Buffalo in January or February. You could find an affordable fare with United Airlines during these off-season months.
What is the cheapest time to book flights from Ronald Reagan Washington National Airport (DCA) to Buffalo Niagara Intl. Airport (BUF) with United Airlines?
To find cheap United Airlines fares from Ronald Reagan Washington National Airport (DCA) to Buffalo Niagara Intl. Airport (BUF), start searching one to three months before your planned departure. Reserving domestic flights 34 to 86 days in advance could save you 25% compared to booking just 6 to 12 days ahead. The day you book can also impact how much you pay. Sunday tends to be the most affordable, while Monday is often the most expensive for domestic flights. You can save 6% on average by booking your journey on a Sunday.**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.
Does United Airlines fly nonstop from Ronald Reagan Washington National Airport (DCA) to Buffalo Niagara Intl. Airport (BUF)?
To figure out if there's a direct route from DCA to BUF with United Airlines or another airline, check the "Nonstop" box when browsing for tickets.
What is the earliest United Airlines flight from DCA to BUF?
Find United Airlines's earliest flights from DCA to BUF by checking our "Morning" and "Early Morning" filters. Not only will you get to your destination sooner, early departures also have a 20% less chance of being 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.
What airports does United Airlines fly into in Buffalo?
United Airlines flights from Ronald Reagan Washington National Airport (DCA) to Buffalo arrive at Buffalo Niagara Intl. Airport (BUF). This is the main entry point to this city.
Why fly with United Airlines from DCA to BUF?
With a rewarding loyalty program, United Airlines is a top pick for many travelers journeying from DCA to BUF. Plus, if you're a United Mileage Plus and One Key™ member booking through Expedia, you could earn OneKeyCash™* on eligible flights along with your airline miles.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
Can I change or cancel my United Airlines flight from Ronald Reagan Washington National Airport (DCA) to Buffalo Niagara Intl. Airport (BUF)?
Depending on the type of ticket you purchased, a fee typically applies if you modify or cancel your flight more than 24 hours after it's confirmed. To find plane tickets with more flexibility, select our "Changes included" or "No cancel fee" filter while looking for flights. To learn more about modifying or canceling your reservation, head to "Trips," select your flight and click on "Manage Booking."

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*Available to One Key members.