$86 Cheap Flights from Buffalo (BUF) to Washington (IAD)

View $86 flight on Thu, May 7, 2026Opens in a new window

Popular airlines from Buffalo Niagara Intl. Airport (BUF) to Washington Dulles Intl. Airport (IAD)

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Cheap Flights from Buffalo to Washington (BUF-IAD)

Prices were available within the past 7 days and start at $86 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
Sat, May 9 - Fri, May 15
BUF
Buffalo
IAD
Washington
$170 Roundtrip, found 5 days ago
$170
Roundtrip
found 5 days ago
Select Frontier Airlines flight, departing Sat, May 9 from Buffalo to Washington, returning Fri, May 15, priced at $170 found 5 days ago
Frontier Airlines
Tue, Apr 28 - Wed, Apr 29
BUF
Buffalo
IAD
Washington
$180 Roundtrip, found 4 hours ago
$180
Roundtrip
found 4 hours ago
Select Frontier Airlines flight, departing Tue, Apr 28 from Buffalo to Washington, returning Wed, Apr 29, priced at $180 found 4 hours ago
Frontier Airlines
Thu, May 7 - Mon, May 11
BUF
Buffalo
IAD
Washington
$181 Roundtrip, found 17 hours ago
$181
Roundtrip
found 17 hours ago
Select Frontier Airlines flight, departing Thu, May 7 from Buffalo to Washington, returning Mon, May 11, priced at $181 found 17 hours ago
Frontier Airlines
Tue, Apr 28 - Wed, Apr 29
BUF
Buffalo
IAD
Washington
$190 Roundtrip, found 5 hours ago
$190
Roundtrip
found 5 hours ago
Select Frontier Airlines flight, departing Tue, Apr 28 from Buffalo to Washington, returning Wed, Apr 29, priced at $190 found 5 hours ago
Frontier Airlines
Sat, Apr 25 - Tue, Apr 28
BUF
Buffalo
IAD
Washington
$201 Roundtrip, found 4 hours ago
$201
Roundtrip
found 4 hours ago
Select Frontier Airlines flight, departing Sat, Apr 25 from Buffalo to Washington, returning Tue, Apr 28, priced at $201 found 4 hours ago
Frontier Airlines
Fri, May 8 - Mon, May 11
BUF
Buffalo
IAD
Washington
$202 Roundtrip, found 17 hours ago
$202
Roundtrip
found 17 hours ago
Select Frontier Airlines flight, departing Fri, May 8 from Buffalo to Washington, returning Mon, May 11, priced at $202 found 17 hours ago
United
Thu, Apr 23 - Mon, Apr 27
BUF
Buffalo
IAD
Washington
$207 Roundtrip, found 4 days ago
$207
Roundtrip
found 4 days ago
Select United flight, departing Thu, Apr 23 from Buffalo to Washington, returning Mon, Apr 27, priced at $207 found 4 days ago
United
Fri, May 8 - Mon, May 11
BUF
Buffalo
IAD
Washington
$211 Roundtrip, found 1 day ago
$211
Roundtrip
found 1 day ago
Select United flight, departing Fri, May 8 from Buffalo to Washington, returning Mon, May 11, priced at $211 found 1 day ago
Delta
Fri, Apr 17 - Mon, Apr 20
BUF
Buffalo
IAD
Washington
$219 Roundtrip, found 22 hours ago
$219
Roundtrip
found 22 hours ago
Select Delta flight, departing Fri, Apr 17 from Buffalo to Washington, returning Mon, Apr 20, priced at $219 found 22 hours ago
American Airlines
Thu, Oct 1 - Mon, Oct 5
BUF
Buffalo
IAD
Washington
$279 Roundtrip, found 8 hours ago
$279
Roundtrip
found 8 hours ago
Select American Airlines flight, departing Thu, Oct 1 from Buffalo to Washington, returning Mon, Oct 5, priced at $279 found 8 hours ago

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Alternative airports near Washington

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Ronald Reagan Washington National DCA. Cheapest and Closest option available. Average driving time to city center is 8 minutes. Flights from $234
DCA
Ronald Reagan Washington National
CheapestClosest
Average driving time to city center8 min
Flights from $234

Frequently asked questions

How much does a flight from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Washington, DC (IAD-Washington Dulles Intl.) cost?
You can find cheap one-way flights from $86 and cheap return flights from $170 Buffalo, NY (BUF-Buffalo Niagara Intl.) to Washington, DC (IAD-Washington Dulles Intl.) with Expedia. One-way flights typically cost between $164 and $707, and return flights often range between $293 and $1090. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Buffalo, NY (BUF-Buffalo Niagara Intl.) to Washington, DC (IAD-Washington Dulles Intl.) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Washington, DC (IAD-Washington Dulles Intl.)?
May is the cheapest month to fly from Buffalo (BUF) to Washington, DC (IAD), with average round-trip fares around $259. This is about 16% lower than the average price throughout the year, as travel demand is typically lower in late spring. Other cheap months to fly from Buffalo to Washington, DC include January and August.*Averages based on flights available on Expedia in the last year.
Which airlines fly direct from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Washington, DC (IAD-Washington Dulles Intl.)?
United operates around 32 direct flights from BUF to IAD every week.
How do I find cheap flights from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Washington, DC (IAD-Washington Dulles Intl.)?
To find a cheap flight from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Washington, DC (IAD-Washington Dulles Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best airline to fly with from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Washington, DC (IAD-Washington Dulles Intl.)?
The best airline to fly with from Buffalo, NY (BUF) to Washington, DC (IAD) will differ from traveler to traveler. If you like to fly early, United offers early morning flights. If price is the most important factor, United typically offers the lowest fares. Delta offers the most daily flights from BUF to IAD, which is great if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.
What is the best time to fly from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Washington, DC (IAD-Washington Dulles Intl.)?
When flying from Buffalo, NY (BUF) to Washington, DC (IAD), May and August are the best months to consider. May offers an average return flight price of about $259, making it an economical choice. August is also popular, providing a good number of flights, which means you can find a schedule that fits your needs while enjoying pleasant weather in DC.*Prices based on flights available on Expedia in the last year.
How many flights per day from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Washington, DC (IAD-Washington Dulles Intl.)?
You can find approximately 4 nonstop flights per day from Buffalo Niagara Intl. (BUF) to Washington Dulles Intl. (IAD). For more options, look at flights that include layovers.
What is the earliest flight from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Washington, DC (IAD-Washington Dulles Intl.)?
The earliest flight from Buffalo Niagara International Airport (BUF) to Washington Dulles International Airport (IAD) typically departs at around 5:05 AM, operated by Southwest Airlines. This seasonal service is available in June, July, and August, making it a convenient option for early risers. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What are the most popular departure times for flights from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Washington, DC (IAD-Washington Dulles Intl.)?
For flights from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Washington, DC (IAD-Washington Dulles Intl.), the most popular departure times are from 6am to 9am. This time window accounts for around 31% of total traffic. Airlines like Delta and United operate flights during this period. Many travelers prefer this timing as it allows them to arrive in Washington, DC with plenty of time to start their day.
How long does it take to fly from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Washington, DC (IAD-Washington Dulles Intl.)?
Flying nonstop from BUF to IAD takes around 1 hour 30 minutes, with the route covering approximately 283 miles. Flights with a layover typically take 3 hours 20 minutes longer than direct options. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Washington, DC (IAD-Washington Dulles Intl.)?
First class seats are offered on the BUF to IAD route. First class cabins are available on:

  • Delta Air Lines
  • United Airlines
  • American Airlines

How do I earn miles on a Buffalo, NY (BUF-Buffalo Niagara Intl.) to Washington, DC (IAD-Washington Dulles Intl.) flight with Expedia?
It's easy to earn miles on a Buffalo, NY (BUF-Buffalo Niagara Intl.) to Washington, DC (IAD-Washington Dulles Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Washington from Buffalo Niagara Intl. (BUF)?
When traveling from Buffalo Niagara Intl. (BUF) to Washington, you can fly into Ronald Reagan Washington National (DCA) and Washington Dulles Intl. (IAD). Some flights may connect through major hubs like Philadelphia Intl. (PHL), LaGuardia (LGA), Charlotte-Douglas Intl. (CLT) before reaching Washington. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Washington, DC (IAD-Washington Dulles Intl.) at the last minute?
Typically, booking a last minute flight from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Washington, DC (IAD-Washington Dulles Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Buffalo, NY (BUF-Buffalo Niagara Intl.) to Washington, DC (IAD-Washington Dulles Intl.) flight and hotel package?
Securing a Buffalo, NY (BUF-Buffalo Niagara Intl.) to Washington, DC (IAD-Washington Dulles Intl.) Fairfax County Vacation Packages is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Washington, DC (IAD-Washington Dulles Intl.)?
If you booked your Buffalo, NY (BUF-Buffalo Niagara Intl.) to Washington, DC (IAD-Washington Dulles Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Buffalo Niagara Intl.
Destination airport
Washington Dulles Intl.
Airlines serving
American Airlines, Delta, Frontier Airlines, United
Roundtrip price
$170
Distance
283 mi
Average flight time
1 hour 26 mins

Book with confidence

Buffalo to Washington Flights

The cheapest times to fly from Buffalo to Washington

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 Buffalo to Washington are during the month of May. You can find some of the cheapest flights from Buffalo to Washington with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Buffalo to Washington

Sunday is one of the best days to book for cheap flights from Buffalo to Washington: 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 Buffalo to Washington

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 Buffalo to Washington in 2026. You can also book with separate airlines for your outbound and return journeys, from $86 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 Buffalo to Washington 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 Buffalo to Washington 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.

 

Buffalo to Washington Flights

*Flight schedules are subject to change.

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*Available to One Key members.