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Dulles Intl

$74+ 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 2/21. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — IAD
Feb 13 — Feb 201
Fri 2/13
Fri 2/20
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 80 days in advance, depart on a Friday or Thursday and return on a Saturday

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 January 14, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$168
(Mytrip)

One-way from

$74
(Mytrip)

Popular in

January

Cheapest in

May

Average price

$293

Good round-trip deal

$259 or less

Good one-way deal

$309 or less
Provider with most accurate pricing for Buffalo-Washington, D.C. Dulles Intl flight deals.
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Provider most trusted by Cheapflights users for Buffalo-Washington, D.C. Dulles Intl flights.
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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. 4% potential increase in price ($11 potential increase over avg. RT price).
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Cheapest flight prices on average. 0% potential price decrease ($3 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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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 January 14, 2026.

This Mytrip deal was found by Cheapflights users on 1/12. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/216:40 pm
BUF
-
IAD
1 stop18h 39m
Frontier
Thu 2/268:07 pm
IAD
-
BUF
1 stop20h 03m
Frontier
Deal found 1/12$168
This United Airlines deal was found by Cheapflights users on 1/12. 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.
Fri 2/69:55 am
BUF
-
IAD
Nonstop1h 38m
United Airlines
Tue 2/1012:40 pm
IAD
-
BUF
Nonstop1h 34m
United Airlines
Deal found 1/12$179
This Expedia deal was found by Cheapflights users on 1/13. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/57:59 pm
BUF
-
IAD
1 stop12h 41m
Frontier
Mon 2/91:31 pm
IAD
-
BUF
1 stop28h 50m
Frontier
Deal found 1/13$181
This United Airlines deal was found by Cheapflights users on 1/13. 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 2/59:55 am
BUF
-
IAD
Nonstop1h 38m
United Airlines
Mon 2/912:40 pm
IAD
-
BUF
Nonstop1h 34m
United Airlines
Deal found 1/13$186
This United Airlines deal was found by Cheapflights users on 1/12. 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.
Fri 2/206:07 am
BUF
-
IAD
Nonstop1h 28m
United Airlines
Mon 2/2310:18 pm
IAD
-
BUF
Nonstop1h 26m
United Airlines
Deal found 1/12$187
This United Airlines deal was found by Cheapflights users on 1/14. 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.
Fri 3/137:30 pm
BUF
-
IAD
Nonstop1h 28m
United Airlines
Sun 3/1510:15 pm
IAD
-
BUF
Nonstop1h 27m
United Airlines
Deal found 1/14$192
This Delta deal was found by Cheapflights users on 1/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/510:33 am
BUF
-
IAD
1 stop6h 13m
Delta
Sun 2/87:49 pm
IAD
-
BUF
1 stop4h 27m
Delta
Deal found 1/14$199
This United Airlines deal was found by Cheapflights users on 1/12. 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.
Sat 6/276:00 am
BUF
-
IAD
Nonstop1h 19m
United Airlines
Wed 7/110:15 pm
IAD
-
BUF
Nonstop1h 11m
United Airlines
Deal found 1/12$210
This United Airlines deal was found by Cheapflights users on 1/12. 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.
Tue 3/317:45 pm
BUF
-
IAD
Nonstop1h 20m
United Airlines
Mon 4/138:32 am
IAD
-
BUF
Nonstop1h 28m
United Airlines
Deal found 1/12$211
This United Airlines deal was found by Cheapflights users on 1/13. 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.
Fri 3/137:30 pm
BUF
-
IAD
Nonstop1h 28m
United Airlines
Sat 3/1410:15 pm
IAD
-
BUF
Nonstop1h 27m
United Airlines
Deal found 1/13$214
This Delta deal was found by Cheapflights users on 1/12. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/66:03 am
BUF
-
IAD
1 stop5h 49m
Delta
Tue 2/1012:23 pm
IAD
-
BUF
1 stop6h 39m
Delta
Deal found 1/12$219

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 January 14, 2026.
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 4/16

7:45 pm-9:05 pm

Nonstop1h 20m

Washington, D.C. Dulles Intl

Sun 4/19

8:32 am-10:00 am

Nonstop1h 28m

$179

BuffaloWashington, D.C.

BUF - IAD

BUFIAD

Buffalo

Fri 5/1

6:00 am-7:19 am

Nonstop1h 19m

Washington, D.C. Dulles Intl

Sun 5/10

12:35 pm-1:46 pm

Nonstop1h 11m

$179

BuffaloWashington, D.C.

BUF - IAD

BUFIAD

Buffalo

Tue 3/3

6:07 am-7:35 am

Nonstop1h 28m

Washington, D.C. Dulles Intl

Sat 3/7

10:15 pm-11:42 pm

Nonstop1h 27m

$179

BuffaloWashington, D.C.

BUF - IAD

BUFIAD

Buffalo

Fri 2/6

9:55 am-11:33 am

Nonstop1h 38m

Washington, D.C. Dulles Intl

Sun 2/8

12:40 pm-2:14 pm

Nonstop1h 34m

$179

BuffaloWashington, D.C.

BUF - IAD

BUFIAD

Buffalo

Fri 5/1

10:20 am-11:41 am

Nonstop1h 21m

Washington, D.C. Dulles Intl

Wed 5/6

8:25 am-9:47 am

Nonstop1h 22m

$179

BuffaloWashington, D.C.

BUF - IAD

BUFIAD

Buffalo

Wed 2/11

9:55 am-11:33 am

Nonstop1h 38m

Washington, D.C. Dulles Intl

Mon 2/16

5:15 pm-6:46 pm

Nonstop1h 31m

$179

BuffaloWashington, D.C.

BUF - IAD

BUFIAD

Buffalo

Thu 2/5

9:55 am-11:33 am

Nonstop1h 38m

Washington, D.C. Dulles Intl

Mon 2/9

12:40 pm-2:14 pm

Nonstop1h 34m

$186

BuffaloWashington, D.C.

BUF - IAD

BUFIAD

Buffalo

Fri 3/13

7:30 pm-8:58 pm

Nonstop1h 28m

Washington, D.C. Dulles Intl

Sun 3/15

10:15 pm-11:42 pm

Nonstop1h 27m

$192

BuffaloWashington, D.C.

BUF - IAD

BUFIAD

Buffalo

Fri 2/27

7:00 am-11:44 am

1 stop4h 44m

Washington, D.C. Dulles Intl

Sun 3/1

6:00 am-11:43 am

1 stop5h 43m

$199

BuffaloWashington, D.C.

BUF - IAD

BUFIAD

Buffalo

Wed 3/4

5:44 pm-11:09 pm

1 stop5h 25m

Washington, D.C. Dulles Intl

Wed 3/11

6:00 am-9:50 am

1 stop3h 50m

$199

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/12

Showing 1-10 of 21 results
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Compare providers for flights from Buffalo to Dulles Intl

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Buffalo to Dulles Intl in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Buffalo-Washington, D.C. Dulles Intl Airport flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Buffalo-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Buffalo-Washington, D.C. Dulles Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Buffalo-Washington, D.C. Dulles Intl Airport flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Buffalo-Washington, D.C. Dulles Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 January 9, 2026.

Booking 80 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, April is the cheapest month in which you can book a flight from Buffalo to Washington, D.C. Dulles Intl Airport (average of $157). Flying from Buffalo to Washington, D.C. Dulles Intl Airport in March is currently the most expensive (average of $213). 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 January 14, 2026.

Unlike at noon, when flights are generally more expensive, you can save up to 59% 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 January 10, 2026.

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

How much does it cost to fly round-trip from Buffalo to Washington, D.C. Dulles Intl Airport?

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 January 14, 2026.
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
9,163 reviews

Food

6.6

Entertainment

7.1

Crew

8.1

Overall

7.4

Boarding

7.7

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
United Airlines
7.4
Good
9,163 reviews
United Airlines
7.4
Good
9,163 reviews

Food

6.6

Entertainment

7.1

Crew

8.1

Overall

7.4

Boarding

7.7

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

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 7 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 can get you from Buffalo to Washington, D.C. Dulles Intl Airport in just under 1h 20m. Your travel time will be generally consistent. Buffalo and Washington, D.C. Dulles Intl Airport are separated by a distance of 284 mi. All flights are typically nonstop.

  • 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 ($184), offers the cheapest pricing from Buffalo to Washington, D.C. Dulles Intl Airport. United Airlines is priced at 30% 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 (85%), United Airlines (75%), Avianca( 73%).

  • 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 $401, our data indicates the cheapest price to be $175. The most popular route (Buffalo - Washington, D.C. Dulles Intl), is priced around $179.

  • 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, April is the cheapest month in which you can book a flight from Buffalo to Washington, D.C. Dulles Intl Airport (average of $157). Flying from Buffalo to Washington, D.C. Dulles Intl Airport in March is currently the most expensive (average of $213). 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
Alexandria
Woodbridge
Tysons
Arlington
Owings Mills
Springfield
Silver Spring
Hanover
Fredericksburg
Linthicum Heights
Rockville
Laurel
Towson
Manassas
National Harbor
Largo
Bowie
McLean
Clinton
Herndon

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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.
John F Kennedy Intl to Dulles Intl flights
LaGuardia to Reagan-National flights
John F Kennedy Intl to Reagan-National flights
Newark to Reagan-National flights
LaGuardia to Dulles Intl flights
Newark to Dulles Intl flights
LaGuardia to Baltimore flights
John F Kennedy Intl to Baltimore flights
Newark to Baltimore flights
Rochester to Dulles Intl flights
Syracuse to Dulles Intl flights
Albany to Dulles Intl flights
Buffalo to Baltimore flights
Syracuse to Reagan-National flights
Rochester to Baltimore flights
Rochester to Reagan-National flights
Syracuse to Baltimore flights
Albany to Reagan-National flights
White Plains to Reagan-National flights
Albany to Baltimore flights
Ithaca to Dulles Intl flights
White Plains to Dulles Intl flights
Buffalo to Reagan-National flights
Ithaca to Reagan-National flights
Stewart to Baltimore flights
White Plains to Baltimore flights
Islip to Baltimore flights
Islip to Reagan-National flights
Saranac Lake to Reagan-National flights
Ithaca to Baltimore flights
Rutland to Reagan-National flights
Elmira to Reagan-National flights
Binghamton to Reagan-National flights
Watertown to Reagan-National flights
Stewart to Dulles Intl flights
Elmira to Baltimore flights
Stewart to Reagan-National flights
Saranac Lake to Baltimore flights
Watertown to Baltimore flights
Niagara Falls to Baltimore flights
Saranac Lake to Dulles Intl flights
Rutland to Dulles Intl flights
Rutland to Baltimore flights
Binghamton to Dulles Intl flights
Plattsburgh to Baltimore 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 January 14, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$184Average$269FlexibilityNo cancel feeOn-time69%

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