$89 Cheap Flights from Buffalo (BUF) to Washington (IAD)

View $89 flight on Wed, Sep 24, 2025Opens 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 $89 for one-way flights and $158 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Wed, Sep 17 - Tue, Sep 30
BUF
Buffalo
IAD
Washington
$158 Roundtrip, found 5 days ago
$158
Roundtrip
found 5 days ago
Select Delta flight, departing Wed, Sep 17 from Buffalo to Washington, returning Tue, Sep 30, priced at $158 found 5 days ago
Delta
Sat, Aug 30 - Mon, Sep 1
BUF
Buffalo
IAD
Washington
$170 Roundtrip, found 4 days ago
$170
Roundtrip
found 4 days ago
Select Delta flight, departing Sat, Aug 30 from Buffalo to Washington, returning Mon, Sep 1, priced at $170 found 4 days ago
United
Thu, Aug 21 - Mon, Aug 25
BUF
Buffalo
IAD
Washington
$177 Roundtrip, found 4 hours ago
$177
Roundtrip
found 4 hours ago
Select United flight, departing Thu, Aug 21 from Buffalo to Washington, returning Mon, Aug 25, priced at $177 found 4 hours ago
United
Fri, Sep 5 - Mon, Sep 8
BUF
Buffalo
IAD
Washington
$178 Roundtrip, just found
$178
Roundtrip
just found
Select United flight, departing Fri, Sep 5 from Buffalo to Washington, returning Mon, Sep 8, priced at $178 just found
United
Sat, Aug 2 - Sun, Aug 3
BUF
Buffalo
IAD
Washington
$179 Roundtrip, found 5 hours ago
$179
Roundtrip
found 5 hours ago
Select United flight, departing Sat, Aug 2 from Buffalo to Washington, returning Sun, Aug 3, priced at $179 found 5 hours ago
United
Sat, Nov 1 - Wed, Nov 5
BUF
Buffalo
IAD
Washington
$182 Roundtrip, found 3 days ago
$182
Roundtrip
found 3 days ago
Select United flight, departing Sat, Nov 1 from Buffalo to Washington, returning Wed, Nov 5, priced at $182 found 3 days ago
United
Thu, Jul 31 - Mon, Aug 4
BUF
Buffalo
IAD
Washington
$184 Roundtrip, found 3 hours ago
$184
Roundtrip
found 3 hours ago
Select United flight, departing Thu, Jul 31 from Buffalo to Washington, returning Mon, Aug 4, priced at $184 found 3 hours ago
United
Fri, Sep 5 - Mon, Sep 8
BUF
Buffalo
IAD
Washington
$186 Roundtrip, just found
$186
Roundtrip
just found
Select United flight, departing Fri, Sep 5 from Buffalo to Washington, returning Mon, Sep 8, priced at $186 just found
Frontier Airlines
Thu, Aug 21 - Mon, Aug 25
BUF
Buffalo
IAD
Washington
$244 Roundtrip, found 4 hours ago
$244
Roundtrip
found 4 hours ago
Select Frontier Airlines flight, departing Thu, Aug 21 from Buffalo to Washington, returning Mon, Aug 25, priced at $244 found 4 hours ago
American Airlines
Sat, Aug 23 - Wed, Aug 27
BUF
Buffalo
IAD
Washington
$251 Roundtrip, found 17 hours ago
$251
Roundtrip
found 17 hours ago
Select American Airlines flight, departing Sat, Aug 23 from Buffalo to Washington, returning Wed, Aug 27, priced at $251 found 17 hours ago

Find the cheapest month to fly from Buffalo (BUF) to Washington (IAD)

April is typically the cheapest month to fly

From $138 - $393 per traveler.

Graph displaying average flight prices per month

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 $239
DCA
Ronald Reagan Washington National
CheapestClosest
Average driving time to city center8 min
Flights from $239
Flights from Buffalo (BUF) to Washington (IAD)
Origin airport
Buffalo Niagara Intl.
Destination airport
Washington Dulles Intl.
Airlines serving
American Airlines, Delta, Frontier Airlines, United
Roundtrip price
$158
Distance
283 mi
Average flight time
1 hour 18 mins

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 September. 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 2025. You can also book with separate airlines for your outbound and return journeys, from $89 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.

 

Frequently asked questions

How much does a flight from Buffalo Niagara Intl. Airport (BUF) to Washington Dulles Intl. Airport (IAD) cost?
You can find cheap return tickets from Buffalo Niagara Intl. Airport (BUF) to Washington Dulles Intl. Airport (IAD) starting from $137. Book a seat and get ready for takeoff. 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 BUF on August 1 2025 and touching down at IAD. The price was last updated on July 7 2025 and has not changed since.
What is the cheapest month to fly from BUF to IAD?
The cheapest flights from BUF to IAD 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 Buffalo Niagara Intl. Airport (BUF) to Washington Dulles Intl. Airport (IAD)?
Take a nonstop flight with United Airlines and go straight from Buffalo Niagara Intl. Airport (BUF) to Washington Dulles Intl. Airport (IAD).
What is the cheapest airline that flies from BUF to IAD?
With prices starting from $87 for a one-way journey from BUF to IAD, United is currently the cheapest airline for this route. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from BUF on August 7 2025. Prices were last updated on July 7 2025 and have not changed since.
How many flights per day from Buffalo Niagara Intl. Airport (BUF) to Washington Dulles Intl. Airport (IAD)?
When departing from Buffalo Niagara Intl. Airport (BUF), you can take your pick from an average of 3 daily nonstop flights to Washington Dulles Intl. Airport (IAD).
What are the most popular departure times for flights from Buffalo Niagara Intl. Airport (BUF) to Washington Dulles Intl. Airport (IAD)?
The 10 AM departures from BUF to IAD are typically the busiest. Greater demand means you'll likely pay more for these departures. If you want to save money, book during off-peak hours.
What day of the week has the most flights from BUF to IAD?
Fly on a Sunday if you're looking for the largest selection of flights from Buffalo Niagara Intl. Airport (BUF) to Washington Dulles Intl. Airport (IAD).
What is the earliest flight from Buffalo Niagara Intl. Airport (BUF) to Washington Dulles Intl. Airport (IAD)?
Buffalo Niagara Intl. Airport (BUF)'s first flight to Washington Dulles Intl. Airport (IAD) leaves at approximately 6:00AM UTC-5. With a total travel time of 1h 29m, you'll arrive at around 7:29AM UTC-5.
How long does it take to fly from Buffalo Niagara Intl. Airport (BUF) to Washington Dulles Intl. Airport (IAD)?
The average flight time from BUF to IAD is 1 hour and 29 minutes, covering a distance of 280 mi.
What airline has the least delays from BUF to IAD?
Consider traveling with Lufthansa if you'd like to fly straight from Buffalo Niagara Intl. Airport (BUF) to Washington Dulles Intl. Airport (IAD) without any interruptions. This airline has the best track record for punctuality, with an on-time performance of 85%. Want real-time updates? You can keep an eye on your flight status using the Expedia App.
What is the best time to fly from Buffalo Niagara Intl. Airport (BUF) to Washington Dulles Intl. Airport (IAD)?
To avoid potential delays on the Buffalo Niagara Intl. Airport (BUF) to Washington Dulles Intl. Airport (IAD) route, aim to fly before 3 PM. Later flights have a 22% higher chance of being canceled.**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 Washington from Buffalo Niagara Intl. Airport (BUF)?
Board a direct flight from Buffalo Niagara Intl. Airport (BUF) to Washington and land at any one of these hubs:

  • Ronald Reagan Washington National Airport (DCA)
  • Washington Dulles Intl. Airport (IAD)
  • Baltimore Washington Intl. Thurgood Marshall Airport (BWI)

Is it cheaper to buy a plane ticket from Buffalo Niagara Intl. Airport (BUF) to Washington Dulles Intl. Airport (IAD) last-minute?
Booking your flight from BUF to IAD just before your getaway is generally more expensive. However, if there's some wiggle room with your travel times and dates, you could grab a cheap last-minute fare.
Is it cheaper to book a BUF to IAD flight and hotel package?
Compared with arranging hotels and flights separately, booking a BUF to IAD flight and hotel package with Expedia could result in significant savings. What's more, having everything in one easy place will take the hassle out of planning your trip. Simply secure your flights and select from our wide range of stays, then personalize your trip with other add-ons like activities and car rentals.
Can I cancel or change the date of my flight from Buffalo Niagara Intl. Airport (BUF) to Washington Dulles Intl. Airport (IAD)?
In most instances, you can modify or cancel your BUF to IAD flight. However, additional fees may apply, especially if you made your booking over 24 hours ago. Check your itinerary for the airline's fees and rules on flight changes, or if you need more details, head to our Customer Service portal.

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