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Dulles Intl

$67+ 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 1/10. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — IAD
Jan 3 — Jan 101
Sat 1/3
Sat 1/10
1 adult, Economy
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Cheapflights Tip: The best prices from Buffalo to Washington, D.C. Dulles Intl are usually found in June or May, booked 30 days in advance, depart on a Friday or Thursday and return on a Saturday

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 December 4, 2025.

This United Airlines deal was found by Cheapflights users on 12/1. 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 12/2510:29 amBUF - IAD
Nonstop1h 26mUnited Airlines
Mon 12/295:30 pmIAD - BUF
Nonstop1h 36mUnited Airlines
Deal found 12/1$179
This United Airlines deal was found by Cheapflights users on 12/2. 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 12/2310:29 amBUF - IAD
Nonstop1h 26mUnited Airlines
Fri 12/268:20 amIAD - BUF
Nonstop1h 26mUnited Airlines
Deal found 12/2$194
This United Airlines deal was found by Cheapflights users on 12/3. 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 12/1810:29 amBUF - IAD
Nonstop1h 26mUnited Airlines
Mon 12/228:20 amIAD - BUF
Nonstop1h 26mUnited Airlines
Deal found 12/3$209
This Frontier deal was found by Cheapflights users on 12/2. 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.
Fri 12/1211:30 amBUF - IAD
1 stop11h 35mFrontier
Sun 12/145:45 amIAD - BUF
1 stop5h 25mFrontier
Deal found 12/2$212
This Frontier deal was found by Cheapflights users on 12/2. 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.
Mon 12/811:40 amBUF - IAD
1 stop11h 25mFrontier
Thu 12/115:45 amIAD - BUF
1 stop5h 25mFrontier
Deal found 12/2$234
This United Airlines deal was found by Cheapflights users on 12/4. 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 12/1210:10 amBUF - IAD
Nonstop1h 25mUnited Airlines
Mon 12/1512:50 pmIAD - BUF
Nonstop1h 32mUnited Airlines
Deal found 12/4$239
This United Airlines deal was found by Cheapflights users on 12/3. 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 12/252:50 pmBUF - IAD
Nonstop1h 29mUnited Airlines
Sun 12/285:30 pmIAD - BUF
Nonstop1h 36mUnited Airlines
Deal found 12/3$240
This United Airlines deal was found by Cheapflights users on 12/1. 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 12/212:50 pmBUF - IAD
Nonstop1h 29mUnited Airlines
Wed 12/3112:40 pmIAD - BUF
Nonstop1h 34mUnited Airlines
Deal found 12/1$254
This United Airlines deal was found by Cheapflights users on 12/4. 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 12/143:00 pmBUF - IAD
Nonstop1h 21mUnited Airlines
Mon 12/228:20 amIAD - BUF
Nonstop1h 26mUnited Airlines
Deal found 12/4$256
This Delta deal was found by Cheapflights users on 12/4. 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 12/116:12 amBUF - IAD
1 stop4h 14mDelta
Mon 12/155:03 pmIAD - BUF
1 stop5h 55mDelta
Deal found 12/4$259
This United Airlines deal was found by Cheapflights users on 12/2. 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 12/910:10 amBUF - IAD
Nonstop1h 25mUnited Airlines
Sat 12/1312:50 pmIAD - BUF
Nonstop1h 32mUnited Airlines
Deal found 12/2$260
This United Airlines deal was found by Cheapflights users on 12/2. 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 12/63:03 pmBUF - IAD
Nonstop1h 21mUnited Airlines
Tue 12/1612:50 pmIAD - BUF
Nonstop1h 32mUnited Airlines
Deal found 12/2$264

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 December 4, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$155
(Kiwi.com)

One-way from

$67
(Kiwi.com)

Popular in

October

Cheapest in

June

Average price

$259

Good round-trip deal

$289 or less

Good one-way deal

$198 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. 4% potential increase in price ($10 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 0% potential price decrease ($3 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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 December 4, 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

Wed 3/11

7:30 pm-8:58 pm

Nonstop1h 28m

Washington, D.C. Dulles Intl

Sat 3/14

10:15 pm-11:42 pm

Nonstop1h 27m

$179

BuffaloWashington, D.C.

BUF - IAD

BUFIAD

Buffalo

Thu 1/8

9:55 am-11:33 am

Nonstop1h 38m

Washington, D.C. Dulles Intl

Mon 1/12

12:40 pm-2:14 pm

Nonstop1h 34m

$179

BuffaloWashington, D.C.

BUF - IAD

BUFIAD

Buffalo

Thu 12/18

2:50 pm-4:19 pm

Nonstop1h 29m

Washington, D.C. Dulles Intl

Tue 1/6

5:48 pm-7:25 pm

Nonstop1h 37m

$188

BuffaloWashington, D.C.

BUF - IAD

BUFIAD

Buffalo

Tue 12/23

10:29 am-11:55 am

Nonstop1h 26m

Washington, D.C. Dulles Intl

Fri 12/26

8:20 am-9:46 am

Nonstop1h 26m

$194

BuffaloWashington, D.C.

BUF - IAD

BUFIAD

Buffalo

Fri 1/9

5:44 pm-11:06 pm

1 stop5h 22m

Washington, D.C. Dulles Intl

Mon 1/12

6:00 am-11:27 am

1 stop5h 27m

$199

BuffaloWashington, D.C.

BUF - IAD

BUFIAD

Buffalo

Sun 2/1

9:55 am-11:33 am

Nonstop1h 38m

Washington, D.C. Dulles Intl

Sun 2/8

12:40 pm-2:14 pm

Nonstop1h 34m

$206

BuffaloWashington, D.C.

BUF - IAD

BUFIAD

Buffalo

Wed 3/18

10:32 am-11:55 am

Nonstop1h 23m

Washington, D.C. Dulles Intl

Sat 3/21

10:15 pm-11:42 pm

Nonstop1h 27m

$206

BuffaloWashington, D.C.

BUF - IAD

BUFIAD

Buffalo

Thu 1/8

7:00 am-11:43 am

1 stop4h 43m

Washington, D.C. Dulles Intl

Sun 1/11

6:00 am-11:27 am

1 stop5h 27m

$209

BuffaloWashington, D.C.

BUF - IAD

BUFIAD

Buffalo

Sun 2/1

10:33 am-4:46 pm

1 stop6h 13m

Washington, D.C. Dulles Intl

Sun 2/8

12:32 pm-4:59 pm

1 stop4h 27m

$209

BuffaloWashington, D.C.

BUF - IAD

BUFIAD

Buffalo

Thu 12/18

6:12 am-10:26 am

1 stop4h 14m

Washington, D.C. Dulles Intl

Tue 1/6

7:49 pm-12:16 am

1 stop4h 27m

$214

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/2

Showing 1-10 of 20 results
1
2

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 December.
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 November 28, 2025.

Booking 30 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, January is the cheapest month in which you can book a flight from Buffalo to Washington, D.C. Dulles Intl Airport (average of $148). Flying from Buffalo to Washington, D.C. Dulles Intl Airport in March is currently the most expensive (average of $217). 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 December 4, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 58% 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 November 29, 2025.

Travelers seeking maximum savings on their Buffalo to Washington, D.C. Dulles Intl Airport flight should consider departing on Thursday mornings 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 December 4, 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
9,066 reviews

Crew

8.1

Food

6.6

Comfort

7.3

Overall

7.4

Boarding

7.7

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
United Airlines
7.4
Good
9,066 reviews
United Airlines
7.4
Good
9,066 reviews

Crew

8.1

Food

6.6

Comfort

7.3

Overall

7.4

Boarding

7.7

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000

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 Delta can get you from Buffalo to Washington, D.C. Dulles Intl Airport in just under 1h 28m. Your travel time can differ by up to 3h 54m. 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 27% 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%), CommutAir (86%), Lufthansa( 84%).

  • 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 $364, our data indicates the cheapest price to be $128. 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, January is the cheapest month in which you can book a flight from Buffalo to Washington, D.C. Dulles Intl Airport (average of $148). Flying from Buffalo to Washington, D.C. Dulles Intl Airport in March is currently the most expensive (average of $217). 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
Hanover
Silver Spring
Fredericksburg
Fairfax
Linthicum Heights
Manassas
Laurel
Towson
National Harbor
Bowie
Largo
McLean
Clinton
Upper Marlboro

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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 Reagan-National flights
John F Kennedy Intl to Reagan-National flights
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Newark to Reagan-National flights
Newark to Dulles Intl flights
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John F Kennedy Intl to Baltimore flights
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LaGuardia to Baltimore flights
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Rochester to Dulles Intl flights
Albany to Reagan-National flights
Albany to Dulles Intl flights
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Rochester to Reagan-National flights
White Plains to Reagan-National flights
Syracuse to Reagan-National flights
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Buffalo to Reagan-National flights
Ithaca to Dulles Intl flights
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Islip to Baltimore flights
Stewart to Baltimore flights
Ithaca to Reagan-National flights
Saranac Lake to Reagan-National flights
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Binghamton to Reagan-National flights
Elmira to Reagan-National flights
Binghamton to Dulles Intl flights
Ithaca to Baltimore flights
Rutland to Reagan-National flights
Elmira to Baltimore flights
Watertown to Reagan-National flights
Stewart to Reagan-National flights
Plattsburgh to Baltimore flights
Watertown to Baltimore flights
Saranac Lake to Baltimore flights
Rutland to Dulles Intl flights
Saranac Lake to Dulles Intl flights
Rutland to Baltimore flights
Niagara Falls 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 December 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$186Average$270FlexibilityNo cancel feeOn-time69%

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