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Dulles Intl

$91+ 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 9/1. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — IAD
Jul 14 — Jul 211
Tue 7/14
Tue 7/21
1 adult, Economy
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Cheap 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 June 14, 2026.

This United Airlines deal was found by Cheapflights users on 6/9. 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 7/23:00 pm
BUF
-
IAD
Nonstop1h 23m
United Airlines
Mon 7/68:25 am
IAD
-
BUF
Nonstop1h 26m
United Airlines
Deal found 6/9$239
This Kiwi.com deal was found by Cheapflights users on 6/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/292:48 pm
BUF
-
IAD
1 stop8h 07m
Frontier
Thu 7/308:33 pm
IAD
-
BUF
1 stop17h 20m
Frontier
Deal found 6/12$240
This Delta deal was found by Cheapflights users on 6/10. 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 8/147:48 pm
BUF
-
IAD
1 stop3h 38m
Delta
Tue 8/186:10 am
IAD
-
BUF
1 stop5h 12m
Delta
Deal found 6/10$242
This Kiwi.com deal was found by Cheapflights users on 6/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/1112:28 pm
BUF
-
IAD
1 stop10h 27m
Frontier
Tue 7/148:33 pm
IAD
-
BUF
1 stop17h 20m
Frontier
Deal found 6/12$249
This Kiwi.com deal was found by Cheapflights users on 6/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/102:48 pm
BUF
-
IAD
1 stop8h 07m
Frontier
Sun 7/128:33 pm
IAD
-
BUF
1 stop17h 20m
Frontier
Deal found 6/10$250
This United Airlines deal was found by Cheapflights users on 6/13. 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.
Sat 7/117:52 pm
BUF
-
IAD
Nonstop1h 23m
United Airlines
Sat 7/1810:26 pm
IAD
-
BUF
Nonstop1h 33m
United Airlines
Deal found 6/13$251
This United Airlines deal was found by Cheapflights users on 6/14. 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.
Sun 6/286:15 am
BUF
-
IAD
Nonstop1h 19m
United Airlines
Sun 7/510:26 pm
IAD
-
BUF
Nonstop1h 33m
United Airlines
Deal found 6/14$254
This Kiwi.com deal was found by Cheapflights users on 6/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/2111:29 am
BUF
-
IAD
1 stop11h 26m
Frontier
Thu 7/238:33 pm
IAD
-
BUF
1 stop17h 20m
Frontier
Deal found 6/10$256
This Expedia deal was found by Cheapflights users on 6/13. 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.
Sat 7/1112:28 pm
BUF
-
IAD
1 stop10h 27m
Frontier
Sat 7/181:21 pm
IAD
-
BUF
1 stop7h 46m
Frontier
Deal found 6/13$258
This Delta deal was found by Cheapflights users on 6/10. 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 7/247:00 am
BUF
-
IAD
1 stop4h 49m
Delta
Mon 7/276:59 pm
IAD
-
BUF
1 stop5h 47m
Delta
Deal found 6/10$259
This United Airlines deal was found by Cheapflights users on 6/10. 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 7/117:52 pm
BUF
-
IAD
Nonstop1h 23m
United Airlines
Tue 7/1410:26 pm
IAD
-
BUF
Nonstop1h 33m
United Airlines
Deal found 6/10$266

Find 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 June 14, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$239
(United Airlines)

One-way from

$91
(Kiwi.com)

Popular in

April

Cheapest in

July

Average price

$327

Good round-trip deal

$364 or less

Good one-way deal

$240 or less
Provider with most accurate pricing for Buffalo-Washington, D.C. Dulles Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Buffalo-Washington, D.C. Dulles Intl flights.
Search Deals
From Buffalo to Washington, D.C. Dulles Intl
Search Deals
One-way flight from Buffalo to Washington, D.C. Dulles Intl
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($20 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($9 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2026
Search Deals
Price to beat on a round-trip flight from Buffalo to Washington, D.C. Dulles Intl.
Search Deals
Price to beat on a one-way flight from Buffalo to Washington, D.C. Dulles Intl.
Search Deals

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 June 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

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BuffaloWashington, D.C.

BUF - IAD

BUFIAD

Buffalo

Thu 7/2

6:15 am-7:34 am

Nonstop1h 19m

Washington, D.C. Dulles Intl

Sun 7/5

10:26 pm-11:59 pm

Nonstop1h 33m

$239

BuffaloWashington, D.C.

BUF - IAD

BUFIAD

Buffalo

Wed 7/1

10:34 am-11:50 am

Nonstop1h 16m

Washington, D.C. Dulles Intl

Fri 7/3

5:30 pm-7:03 pm

Nonstop1h 33m

$239

BuffaloWashington, D.C.

BUF - IAD

BUFIAD

Buffalo

Fri 8/14

7:48 pm-11:26 pm

1 stop3h 38m

Washington, D.C. Dulles Intl

Tue 8/18

6:10 am-11:22 am

1 stop5h 12m

$242

BuffaloWashington, D.C.

BUF - IAD

BUFIAD

Buffalo

Wed 7/1

6:29 am-10:20 am

1 stop3h 51m

Washington, D.C. Dulles Intl

Fri 7/3

5:29 pm-11:59 pm

1 stop6h 30m

$269

BuffaloWashington, D.C.

BUF - IAD

BUFIAD

Buffalo

Fri 8/14

6:12 am-7:35 am

Nonstop1h 23m

Washington, D.C. Dulles Intl

Tue 8/18

10:18 pm-11:44 pm

Nonstop1h 26m

$292

BuffaloWashington, D.C.

BUF - IAD

BUFIAD

Buffalo

Fri 7/24

6:15 am-7:34 am

Nonstop1h 19m

Washington, D.C. Dulles Intl

Mon 7/27

10:26 pm-11:59 pm

Nonstop1h 33m

$309
Quickest round-trip

BuffaloWashington, D.C.

BUF - IAD

BUFIAD

Buffalo

Fri 7/17

10:34 am-11:50 am

Nonstop1h 16m

Washington, D.C. Dulles Intl

Sun 7/19

8:25 am-9:51 am

Nonstop1h 26m

$309

BuffaloWashington, D.C.

BUF - IAD

BUFIAD

Buffalo

Sat 7/4

6:15 am-7:34 am

Nonstop1h 19m

Washington, D.C. Dulles Intl

Sun 7/5

10:26 pm-11:59 pm

Nonstop1h 33m

$310

BuffaloWashington, D.C.

BUF - IAD

BUFIAD

Buffalo

Fri 7/10

7:52 pm-9:15 pm

Nonstop1h 23m

Washington, D.C. Dulles Intl

Mon 7/13

8:25 am-9:51 am

Nonstop1h 26m

$310

BuffaloWashington, D.C.

BUF - IAD

BUFIAD

Buffalo

Tue 7/7

10:34 am-11:50 am

Nonstop1h 16m

Washington, D.C. Dulles Intl

Tue 7/14

10:26 pm-11:59 pm

Nonstop1h 33m

$322

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/9

Showing 1-10 of 22 resultsSorted by cheapest first
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3

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 June.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
ExpediaPrice Accuracy1 starTrust 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Buffalo-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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

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 $243). Flying from Buffalo to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $394). 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 June 14, 2026.

Unlike in the afternoon, when flights are generally more expensive, you can save up to 69% 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 June 13, 2026.

Travelers seeking maximum savings on their Buffalo to Washington, D.C. Dulles Intl Airport flight should consider departing on Friday mornings when fares are most often at their lowest. Sunday 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 June 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
9,818 reviews

Entertainment

7.1

Food

6.6

Crew

8.1

Overall

7.4

Boarding

7.7

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.
United Airlines
7.4
Good
9,818 reviews
United Airlines
7.4
Good
9,818 reviews

Entertainment

7.1

Food

6.6

Crew

8.1

Overall

7.4

Boarding

7.7

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.

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 9 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 Delta 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 2h 19m. 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 ($189), offers the cheapest pricing from Buffalo to Washington, D.C. Dulles Intl Airport. United Airlines is priced at 36% 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 (100%), GoJet (98%), Lufthansa( 91%).

  • 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 $629, our data indicates the cheapest price to be $151. The most popular route (Buffalo - Washington, D.C. Dulles Intl), is priced around $239.

  • 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 $243). Flying from Buffalo to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $394). 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
Tysons
Owings Mills
Springfield
Arlington
Reston
Rockville
Herndon
Fredericksburg
Laurel
Hyattsville
Manassas
Hanover
Chantilly
Lanham
Falls Church
Waldorf
Silver Spring
Largo
Clinton

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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 June 14, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$189Average$289FlexibilityNo cancel feeOn-time69%

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