$85 Cheap Flights from Washington (IAD) to Buffalo (BUF)

View $85 flight on Sun, May 18, 2025Opens in a new window

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Find available prices by choosing your travel dates.

Cheap Flights from Washington to Buffalo (IAD-BUF)

Prices were available within the past 7 days and start at $85 for one-way flights and $170 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Thu, May 15 - Mon, May 19
IAD
Washington
BUF
Buffalo
$170 Roundtrip, found 5 hours ago
$170
Roundtrip
found 5 hours ago
Select Frontier Airlines flight, departing Thu, May 15 from Washington to Buffalo, returning Mon, May 19, priced at $170 found 5 hours ago
Frontier Airlines
Thu, May 15 - Sat, May 31
IAD
Washington
BUF
Buffalo
$171 Roundtrip, found 13 hours ago
$171
Roundtrip
found 13 hours ago
Select Frontier Airlines flight, departing Thu, May 15 from Washington to Buffalo, returning Sat, May 31, priced at $171 found 13 hours ago
Frontier Airlines
Sat, May 24 - Tue, May 27
IAD
Washington
BUF
Buffalo
$172 Roundtrip, just found
$172
Roundtrip
just found
Select Frontier Airlines flight, departing Sat, May 24 from Washington to Buffalo, returning Tue, May 27, priced at $172 just found
United
Thu, Sep 18 - Sun, Sep 21
IAD
Washington
BUF
Buffalo
$179 Roundtrip, found 5 hours ago
$179
Roundtrip
found 5 hours ago
Select United flight, departing Thu, Sep 18 from Washington to Buffalo, returning Sun, Sep 21, priced at $179 found 5 hours ago
Frontier Airlines
Thu, May 8 - Thu, May 15
IAD
Washington
BUF
Buffalo
$180 Roundtrip, found 1 hour ago
$180
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Thu, May 8 from Washington to Buffalo, returning Thu, May 15, priced at $180 found 1 hour ago
Frontier Airlines
Thu, May 8 - Sat, May 24
IAD
Washington
BUF
Buffalo
$181 Roundtrip, found 1 hour ago
$181
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Thu, May 8 from Washington to Buffalo, returning Sat, May 24, priced at $181 found 1 hour ago
United
Fri, May 9 - Fri, May 16
IAD
Washington
BUF
Buffalo
$184 Roundtrip, found 5 hours ago
$184
Roundtrip
found 5 hours ago
Select United flight, departing Fri, May 9 from Washington to Buffalo, returning Fri, May 16, priced at $184 found 5 hours ago
Delta
Sat, May 24 - Tue, May 27
IAD
Washington
BUF
Buffalo
$186 Roundtrip, found 13 hours ago
$186
Roundtrip
found 13 hours ago
Select Delta flight, departing Sat, May 24 from Washington to Buffalo, returning Tue, May 27, priced at $186 found 13 hours ago
United
Mon, Jun 30 - Sat, Jul 5
IAD
Washington
BUF
Buffalo
$189 Roundtrip, found 5 hours ago
$189
Roundtrip
found 5 hours ago
Select United flight, departing Mon, Jun 30 from Washington to Buffalo, returning Sat, Jul 5, priced at $189 found 5 hours ago
American Airlines
Tue, Jun 17 - Sat, Jun 21
IAD
Washington
BUF
Buffalo
$251 Roundtrip, found 5 hours ago
$251
Roundtrip
found 5 hours ago
Select American Airlines flight, departing Tue, Jun 17 from Washington to Buffalo, returning Sat, Jun 21, priced at $251 found 5 hours ago
Flights from Washington (IAD) to Buffalo (BUF)
Origin airport
Washington Dulles Intl.
Destination airport
Buffalo Niagara Intl.
Airlines serving
American Airlines, Delta, Frontier Airlines, United
Roundtrip price
$170
Distance
283 mi

Washington to Buffalo Flights

The cheapest times to fly from Washington to Buffalo

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Washington to Buffalo are during the month of May. You can find some of the cheapest flights from Washington to Buffalo with Expedia's search tool and vast selection of airlines.

The best time to book a flight from Washington to Buffalo

Sunday is one of the best days to book for cheap flights from Washington to Buffalo: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

How to find cheap round-trip tickets from Washington to Buffalo

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Washington to Buffalo in 2025. You can also book with separate airlines for your outbound and return journeys, from $85 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Washington to Buffalo flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

You could also save big by booking one of Expedia's vacation packages. Bundling together your Washington to Buffalo airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

*Terms apply.

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

Frequently asked questions

How much does a flight from Washington Dulles Intl. Airport (IAD) to Buffalo Niagara Intl. Airport (BUF) cost?
You’ll find cheap return flights from Washington Dulles Intl. Airport (IAD) to Buffalo Niagara Intl. Airport (BUF) starting at $179. Grab a seat and set off on your next adventure. This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a United flight leaving IAD on May 15 2025 and touching down at BUF. The price was last updated on April 23 2025 and has not changed since.
What is the cheapest month to fly from IAD to BUF?
The cheapest flights from IAD to BUF are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from Washington Dulles Intl. Airport (IAD) to Buffalo Niagara Intl. Airport (BUF)?
Fly directly from Washington Dulles Intl. Airport (IAD) to Buffalo Niagara Intl. Airport (BUF) on a United Airlines flight.
What is the cheapest airline that flies from IAD to BUF?
With prices starting from $90 for a one-way flight from IAD to BUF, United is currently the cheapest airline operating this route. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from IAD on May 29 2025. Prices were last updated on April 23 2025 and have not changed since.
How many flights per day from Washington Dulles Intl. Airport (IAD) to Buffalo Niagara Intl. Airport (BUF)?
With, on average, 3 direct flights departing from Washington Dulles Intl. Airport (IAD) to Buffalo Niagara Intl. Airport (BUF) each day, you’ll be on your way in no time.
What are the most popular departure times for flights from Washington Dulles Intl. Airport (IAD) to Buffalo Niagara Intl. Airport (BUF)?
The 5 PM departures from IAD to BUF see the highest demand. These flights can come with a higher price due to their popularity. If you want to save money, book during off-peak hours.
What day of the week has the most flights from IAD to BUF?
If you jet off on a Friday, you’ll get the widest range of options for flights from Washington Dulles Intl. Airport (IAD) to Buffalo Niagara Intl. Airport (BUF).
What is the earliest flight from Washington Dulles Intl. Airport (IAD) to Buffalo Niagara Intl. Airport (BUF)?
The first flight of the day leaving Washington Dulles Intl. Airport (IAD) is at around 12:35PM UTC-5. Board this flight and you’ll land at Buffalo Niagara Intl. Airport (BUF) at approximately 2:02PM UTC-5. The overall travel time is 1h 27m.
How long does it take to fly from Washington Dulles Intl. Airport (IAD) to Buffalo Niagara Intl. Airport (BUF)?
Typically, it takes 1 hour and 27 minutes to travel the 280 mi from IAD to BUF.
What is the best time to fly from Washington Dulles Intl. Airport (IAD) to Buffalo Niagara Intl. Airport (BUF)?
To arrive at Buffalo Niagara Intl. Airport (BUF) on time, book a flight that takes off from Washington Dulles Intl. Airport (IAD) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this hour.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.
What airports do you fly into for Buffalo from Washington Dulles Intl. Airport (IAD)?
Hop on a direct flight from Washington Dulles Intl. Airport (IAD) to Buffalo and touch down at Buffalo Niagara Intl. Airport (BUF). An alternative point of entry into the city is Billy Bishop Toronto City Airport (YTZ).
Is it cheaper to buy a plane ticket from Washington Dulles Intl. Airport (IAD) to Buffalo Niagara Intl. Airport (BUF) last-minute?
Holding off until just before your trip to book a ticket from IAD to BUF often results in higher prices. While you might find some last-minute discounts, they aren’t always guaranteed. Allow some flexibility in your schedule to maximize your chances of getting a bargain.
Is it cheaper to book an IAD to BUF flight and hotel package?
Securing an IAD to BUF flight and hotel package is typically cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your trip in one place. Select from our wide range of hotels and then add flights, car rentals and activities to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Washington Dulles Intl. Airport (IAD) to Buffalo Niagara Intl. Airport (BUF)?
Typically, it’s possible to reschedule or cancel your IAD to BUF flight. However, for bookings made more than 24 hours ago, additional charges may apply. Check your airline’s policies in your itinerary to see what changes are possible and if any costs are involved. You’ll also find more details on our Customer Service portal.

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*Available to One Key members.