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Dulles Intl

$97+ Cheap flights from Buffalo (BUF) to Dulles Intl (IAD)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/23. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — IAD
Aug 23 — Aug 301
Sat 8/23
Sat 8/30
1 adult, Economy
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Cheapflights Tip: The best prices from Buffalo to Washington, D.C. Dulles Intl are usually found in May or June, booked 62 days in advance, depart on a Friday or Thursday and return on a Thursday

Cheap flight deals from Buffalo to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Buffalo (BUF) to Dulles Intl (IAD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated August 18, 2025.

Round-trip from

$179
(United Airlines)

One-way from

$97
(FlightHub)

Popular in

August

Cheapest in

May

Average price

$299

Good round-trip deal

$777 or less

Good one-way deal

$173 or less
From Buffalo to Washington, D.C. Dulles Intl
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One-way flight from Buffalo to Washington, D.C. Dulles Intl
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Highest demand for flights based on searches. 0% potential increase in price ($2 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Price to beat on a round-trip flight from Buffalo to Washington, D.C. Dulles Intl.
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Price to beat on a one-way flight from Buffalo to Washington, D.C. Dulles Intl.
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Find flight deals from Buffalo to Dulles Intl

Cheapest flights from Buffalo to Dulles Intl
Explore the most affordable flight options available from Buffalo to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 18, 2025.

This United Airlines deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/116:00 amBUF - IAD
Nonstop1h 19mUnited Airlines
Sun 9/1410:30 pmIAD - BUF
Nonstop1h 29mUnited Airlines
Deal found 8/17$179
This FlightHub deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/36:59 pmBUF - IAD
1 stop23h 25mFrontier
Sun 10/51:55 pmIAD - BUF
1 stop21h 27mFrontier
Deal found 8/17$184
This FlightHub deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/179:13 pmBUF - IAD
1 stop23h 40mFrontier
Sun 10/194:40 pmIAD - BUF
1 stop18h 39mFrontier
Deal found 8/17$185
This Frontier deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1112:17 pmBUF - IAD
1 stop11h 58mFrontier
Sun 9/1410:09 pmIAD - BUF
2 stops13h 13mFrontier
Deal found 8/17$186
This FlightHub deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/56:59 pmBUF - IAD
1 stop23h 25mFrontier
Mon 9/86:10 amIAD - BUF
1 stop5h 12mFrontier
Deal found 8/15$187
This Frontier deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/251:23 pmBUF - IAD
1 stop6h 46mFrontier
Sun 9/286:10 amIAD - BUF
1 stop5h 12mFrontier
Deal found 8/16$189
This FlightHub deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2212:23 pmBUF - IAD
1 stop11h 53mFrontier
Sun 8/246:10 amIAD - BUF
1 stop5h 30mFrontier
Deal found 8/16$190
This United Airlines deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/146:00 amBUF - IAD
Nonstop1h 20mUnited Airlines
Sun 9/218:25 amIAD - BUF
Nonstop1h 21mUnited Airlines
Deal found 8/17$191
This Frontier deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/41:23 pmBUF - IAD
1 stop6h 46mFrontier
Fri 9/56:10 amIAD - BUF
1 stop5h 12mFrontier
Deal found 8/16$193
This United Airlines deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2810:30 amBUF - IAD
Nonstop1h 15mUnited Airlines
Sun 9/218:25 amIAD - BUF
Nonstop1h 21mUnited Airlines
Deal found 8/17$194
This FlightHub deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/2412:15 pmBUF - IAD
1 stop11h 56mFrontier
Sun 10/264:40 pmIAD - BUF
1 stop18h 39mFrontier
Deal found 8/16$195
This FlightHub deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2212:23 pmBUF - IAD
1 stop11h 53mFrontier
Sat 8/235:37 pmIAD - BUF
1 stop18h 03mFrontier
Deal found 8/16$196

Cheapflights Fare Finder

 
Customize your flight search to find flights from Buffalo to Dulles Intl that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 18, 2025.
Use the filters below to find and compare flights from Buffalo to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Buffalo

Fly to

Dulles Intl

Route

Depart

Return

Price

BuffaloWashington, D.C.

BUF - IAD

BUFIAD

Buffalo

Thu 9/11

6:00 am-7:19 am

Nonstop1h 19m

Washington, D.C. Dulles Intl

Sun 9/14

10:30 pm-11:59 pm

Nonstop1h 29m

$179

BuffaloWashington, D.C.

BUF - IAD

BUFIAD

Buffalo

Wed 9/17

10:40 am-11:55 am

Nonstop1h 15m

Washington, D.C. Dulles Intl

Sat 9/20

10:30 pm-11:59 pm

Nonstop1h 29m

$179

BuffaloWashington, D.C.

BUF - IAD

BUFIAD

Buffalo

Fri 10/3

6:59 pm-6:24 pm

1 stop23h 25m

Washington, D.C. Dulles Intl

Sun 10/5

1:55 pm-11:22 am

1 stop21h 27m

$184

BuffaloWashington, D.C.

BUF - IAD

BUFIAD

Buffalo

Fri 10/17

9:13 pm-8:53 pm

1 stop23h 40m

Washington, D.C. Dulles Intl

Sun 10/19

4:40 pm-11:19 am

1 stop18h 39m

$185

BuffaloWashington, D.C.

BUF - IAD

BUFIAD

Buffalo

Fri 9/19

12:17 pm-12:15 am

1 stop11h 58m

Washington, D.C. Dulles Intl

Sun 9/21

10:09 pm-11:22 am

2 stops13h 13m

$186

BuffaloWashington, D.C.

BUF - IAD

BUFIAD

Buffalo

Thu 10/30

2:42 pm-12:11 am

1 stop9h 29m

Washington, D.C. Dulles Intl

Sat 11/1

8:36 pm-2:47 pm

2 stops18h 11m

$186

BuffaloWashington, D.C.

BUF - IAD

BUFIAD

Buffalo

Thu 9/11

12:17 pm-12:15 am

1 stop11h 58m

Washington, D.C. Dulles Intl

Sun 9/14

10:09 pm-11:22 am

2 stops13h 13m

$186

BuffaloWashington, D.C.

BUF - IAD

BUFIAD

Buffalo

Fri 10/31

2:42 pm-12:11 am

1 stop9h 29m

Washington, D.C. Dulles Intl

Sat 11/1

8:36 pm-2:47 pm

2 stops18h 11m

$186

BuffaloWashington, D.C.

BUF - IAD

BUFIAD

Buffalo

Fri 9/5

6:59 pm-6:24 pm

1 stop23h 25m

Washington, D.C. Dulles Intl

Mon 9/8

6:10 am-11:22 am

1 stop5h 12m

$187

BuffaloWashington, D.C.

BUF - IAD

BUFIAD

Buffalo

Thu 9/25

1:23 pm-8:09 pm

1 stop6h 46m

Washington, D.C. Dulles Intl

Sun 9/28

6:10 am-11:22 am

1 stop5h 12m

$189

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/16

Showing 1-10 of 20 results
1
2

Best time to book a flight from Buffalo to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Buffalo with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Buffalo to Washington, D.C. Dulles Intl Airport

How far ahead should I book a flight from Buffalo to Washington, D.C. Dulles Intl Airport?

Use this chart to determine the optimal time to book a round-trip flight from Buffalo to Dulles Intl. Price data was last updated on August 8, 2025.

Booking 62 days in advance of your planned departure date is, on average, the best time to get cheap flights from Buffalo to Washington, D.C. Dulles Intl Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Buffalo to Washington, D.C. Dulles Intl Airport?

Currently, July is the cheapest month in which you can book a flight from Buffalo to Washington, D.C. Dulles Intl Airport (average of $302). Flying from Buffalo to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from BUF to IAD?

Find hourly flight availability from Buffalo to Dulles Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 18, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 57% on flights from Buffalo to Washington, D.C. Dulles Intl Airport by exploring options for tickets in the morning.

What is the cheapest day to fly from Buffalo to Washington, D.C. Dulles Intl Airport?

Use this chart to determine the cheapest time to fly round-trip from Buffalo to Dulles Intl. Price data was last updated on August 17, 2025.

Travelers seeking maximum savings on their Buffalo to Washington, D.C. Dulles Intl Airport flight should consider departing on Friday afternoons when fares are most often at their lowest. Saturday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Dulles Intl

Get insights into the airlines that provide service to Dulles Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Dulles Intl. Reviews last updated August 18, 2025.
Get a feel of what it's like to fly with United Airlines from Buffalo to Washington, D.C. Dulles Intl Airport by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,925 reviews

Comfort

7.3

Entertainment

7.1

Overall

7.4

Boarding

7.7

Crew

8.1

Food

6.6

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!
United Airlines
7.4
Good
8,925 reviews
United Airlines
7.4
Good
8,925 reviews

Comfort

7.3

Entertainment

7.1

Overall

7.4

Boarding

7.7

Crew

8.1

Food

6.6

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

Related info for your journey

Find useful and relevant information for your journey from Buffalo to Dulles Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Buffalo to Washington, D.C. Dulles Intl?

    Most people fly from Buffalo (BUF) if they book a flight from Buffalo to Washington, D.C. Dulles Intl. On average, Buffalo has 6 outbound flights to Washington, D.C. Dulles Intl per day from 1 airline. Buffalo is conveniently located just 8.3 mi from Buffalo’s city center.

  • How long is the flight from Buffalo to Washington, D.C. Dulles Intl Airport?

    United Airlines and Frontier can get you from Buffalo to Washington, D.C. Dulles Intl Airport in just under 1h 19m. Your travel time can differ by up to 22h 06m. Buffalo and Washington, D.C. Dulles Intl Airport are separated by a distance of 284 mi. This flight may include one or multiple stops.

  • What is the cheapest airline to fly from Buffalo to Washington, D.C. Dulles Intl Airport round-trip?

    According to our current data, United Airlines ($190), offers the cheapest pricing from Buffalo to Washington, D.C. Dulles Intl Airport. United Airlines is priced at 28% lower than the current average price of a flight leaving 3 months from now.

  • What are the most reliable airlines from Buffalo to Washington, D.C. Dulles Intl Airport?

    Before booking your flight to Washington, D.C. Dulles Intl Airport from Buffalo, check out the most reliable airlines to get you to your destination on time: Republic Airways (92%), Mesa Airlines (82%), CommutAir( 74%).

  • What are the cheapest flights from Buffalo to Washington, D.C. Dulles Intl Airport?

    Looking for the cheapest flight from Buffalo to Washington, D.C. Dulles Intl Airport? While on average our users pay $1,063, our data indicates the cheapest price to be $128. The most popular route (Buffalo - Washington, D.C. Dulles Intl), is priced around $191.

  • Can I find deals for flights from Buffalo to Dulles Intl that include hotel bookings?

    Yes. In addition to deals on Buffalo to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Buffalo to Dulles Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Buffalo to Dulles Intl.

  • Can I find deals for business class flights from Buffalo to Dulles Intl?

    Yes. Cheapflights offers flight deals from Buffalo to Dulles Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Buffalo to Washington, D.C. Dulles Intl Airport?

    Currently, July is the cheapest month in which you can book a flight from Buffalo to Washington, D.C. Dulles Intl Airport (average of $302). Flying from Buffalo to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Washington, D.C. Dulles Intl Airport?

Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locations
Woodbridge
Arlington
Alexandria
Tysons
Silver Spring
Springfield
Fredericksburg
Gaithersburg
Towson
Linthicum Heights
Fairfax
Manassas
Falls Church
Laurel
Rockville
Oxon Hill
National Harbor
Dundalk
Waldorf
Bowie

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Alternative routes for Buffalo to Dulles Intl

See prices for flight routes from nearby airports that may be better suited for you.
LaGuardia to Dulles Intl flights
John F Kennedy Intl to Reagan-National flights
John F Kennedy Intl to Dulles Intl flights
Newark to Dulles Intl flights
Newark to Reagan-National flights
LaGuardia to Reagan-National flights
LaGuardia to Baltimore flights
John F Kennedy Intl to Baltimore flights
Newark to Baltimore flights
Buffalo to Baltimore flights
Syracuse to Dulles Intl flights
Rochester to Baltimore flights
Albany to Reagan-National flights
Rochester to Dulles Intl flights
Syracuse to Reagan-National flights
Buffalo to Reagan-National flights
Albany to Dulles Intl flights
White Plains to Dulles Intl flights
Rochester to Reagan-National flights
White Plains to Reagan-National flights
Ithaca to Dulles Intl flights
Albany to Baltimore flights
Syracuse to Baltimore flights
White Plains to Baltimore flights
Islip to Baltimore flights
Stewart to Baltimore flights
Ithaca to Reagan-National flights
Islip to Reagan-National flights
Ithaca to Baltimore flights
Saranac Lake to Reagan-National flights
Stewart to Dulles Intl flights
Binghamton to Dulles Intl flights
Elmira to Baltimore flights
Watertown to Reagan-National flights
Plattsburgh to Baltimore flights
Elmira to Reagan-National flights
Rutland to Reagan-National flights
Binghamton to Reagan-National flights
Saranac Lake to Baltimore flights
Stewart to Reagan-National flights
Rutland to Baltimore flights
Watertown to Baltimore flights
Niagara Falls to Baltimore flights
Rutland to Dulles Intl flights
Saranac Lake to Dulles Intl flights

Top airline flying from Buffalo to Dulles Intl

Discover the top airline that operate flights from Buffalo to Dulles Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$190Average$270FlexibilityNo cancel feeOn-time69%

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