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$81+ Cheap flights from Dulles Intl (IAD) to Buffalo (BUF)

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 1/12. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — BUF
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to Buffalo are usually found in March or April, booked 19 days in advance, depart on a Saturday or Wednesday and return on a Friday

Cheap flight deals from Dulles Intl to Buffalo

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

This United Airlines deal was found by Cheapflights users on 12/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/3012:40 pmIAD - BUF
Nonstop1h 34mUnited Airlines
Tue 1/62:49 pmBUF - IAD
Nonstop1h 30mUnited Airlines
Deal found 12/16$233
This American Airlines deal was found by Cheapflights users on 12/16. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/301:57 pmIAD - BUF
1 stop4h 34mAmerican Airlines
Tue 1/66:32 pmBUF - IAD
1 stop4h 40mAmerican Airlines
Deal found 12/16$259
This United Airlines deal was found by Cheapflights users on 12/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/1612:50 pmIAD - BUF
Nonstop1h 32mUnited Airlines
Tue 12/237:48 pmBUF - IAD
Nonstop1h 32mUnited Airlines
Deal found 12/15$279
This United Airlines deal was found by Cheapflights users on 12/17. 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 12/255:30 pmIAD - BUF
Nonstop1h 36mUnited Airlines
Sun 1/410:29 amBUF - IAD
Nonstop1h 26mUnited Airlines
Deal found 12/17$303
This Delta deal was found by Cheapflights users on 12/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/285:29 pmIAD - BUF
1 stop5h 59mDelta
Tue 1/65:44 pmBUF - IAD
1 stop5h 22mDelta
Deal found 12/16$308
This United Airlines deal was found by Cheapflights users on 12/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/295:30 pmIAD - BUF
Nonstop1h 36mUnited Airlines
Thu 1/17:48 pmBUF - IAD
Nonstop1h 32mUnited Airlines
Deal found 12/15$309
This United Airlines deal was found by Cheapflights users on 12/17. 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.
Sat 12/208:20 amIAD - BUF
Nonstop1h 26mUnited Airlines
Sat 12/277:48 pmBUF - IAD
Nonstop1h 32mUnited Airlines
Deal found 12/17$314
This United Airlines deal was found by Cheapflights users on 12/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/288:20 amIAD - BUF
Nonstop1h 26mUnited Airlines
Tue 1/610:25 amBUF - IAD
Nonstop1h 30mUnited Airlines
Deal found 12/16$316
This United Airlines deal was found by Cheapflights users on 12/17. 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.
Tue 12/308:20 amIAD - BUF
Nonstop1h 26mUnited Airlines
Sat 1/310:29 amBUF - IAD
Nonstop1h 26mUnited Airlines
Deal found 12/17$320

Find flight deals from Dulles Intl to Buffalo

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Buffalo (BUF). 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 18, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$198
(Frontier)

One-way from

$81
(Expedia)

Popular in

February

Cheapest in

March

Average price

$299

Good round-trip deal

$209 or less
Provider with most accurate pricing for Washington, D.C. Dulles Intl-Buffalo flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. Dulles Intl-Buffalo flights.
Search Deals
From Washington, D.C. Dulles Intl to Buffalo
Search Deals
One-way flight from Washington, D.C. Dulles Intl to Buffalo
Search Deals
High demand for flights, 4% potential price rise
Search Deals
Cheapest flight prices on average. 0% potential price decrease ($4 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 Washington, D.C. Dulles Intl to Buffalo.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Dulles Intl to Buffalo 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 18, 2025.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Buffalo that are best for you.

Fly from

Dulles Intl

Fly to

Buffalo

Route

Depart

Return

Price

Washington, D.C.Buffalo

IAD - BUF

IADBUF

Washington, D.C. Dulles Intl

Wed 4/15

9:30 am-3:11 pm

1 stop5h 41m

Buffalo

Sat 4/18

7:25 pm-10:59 pm

1 stop3h 34m

$199

Washington, D.C.Buffalo

IAD - BUF

IADBUF

Washington, D.C. Dulles Intl

Fri 2/6

7:49 pm-12:16 am

1 stop4h 27m

Buffalo

Sun 2/8

7:00 am-11:43 am

1 stop4h 43m

$199

Washington, D.C.Buffalo

IAD - BUF

IADBUF

Washington, D.C. Dulles Intl

Wed 1/14

6:00 am-11:27 am

1 stop5h 27m

Buffalo

Wed 1/21

6:03 am-11:52 am

1 stop5h 49m

$199

Washington, D.C.Buffalo

IAD - BUF

IADBUF

Washington, D.C. Dulles Intl

Fri 2/6

7:49 pm-12:16 am

1 stop4h 27m

Buffalo

Mon 2/9

7:00 am-11:43 am

1 stop4h 43m

$199

Washington, D.C.Buffalo

IAD - BUF

IADBUF

Washington, D.C. Dulles Intl

Thu 1/29

6:00 am-9:53 am

1 stop3h 53m

Buffalo

Sun 2/1

6:03 am-11:52 am

1 stop5h 49m

$199

Washington, D.C.Buffalo

IAD - BUF

IADBUF

Washington, D.C. Dulles Intl

Sat 1/17

12:40 pm-2:14 pm

Nonstop1h 34m

Buffalo

Sun 1/18

2:49 pm-4:19 pm

Nonstop1h 30m

$208

Washington, D.C.Buffalo

IAD - BUF

IADBUF

Washington, D.C. Dulles Intl

Sat 1/24

12:40 pm-2:14 pm

Nonstop1h 34m

Buffalo

Tue 1/27

2:49 pm-4:19 pm

Nonstop1h 30m

$239

Washington, D.C.Buffalo

IAD - BUF

IADBUF

Washington, D.C. Dulles Intl

Fri 2/27

10:18 pm-11:44 pm

Nonstop1h 26m

Buffalo

Sun 3/1

6:07 am-7:35 am

Nonstop1h 28m

$239

Washington, D.C.Buffalo

IAD - BUF

IADBUF

Washington, D.C. Dulles Intl

Wed 4/15

12:35 pm-1:46 pm

Nonstop1h 11m

Buffalo

Sat 4/18

7:55 pm-9:14 pm

Nonstop1h 19m

$239

Washington, D.C.Buffalo

IAD - BUF

IADBUF

Washington, D.C. Dulles Intl

Sat 4/18

10:15 pm-11:26 pm

Nonstop1h 11m

Buffalo

Tue 4/21

2:44 pm-4:03 pm

Nonstop1h 19m

$239

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/18

Showing 1-10 of 16 results
1
2

Compare providers for flights from Dulles Intl to Buffalo

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 Dulles Intl to Buffalo in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice 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 Washington, D.C. Dulles Intl Airport-Buffalo flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Washington, D.C. Dulles Intl Airport-Buffalo flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Washington, D.C. Dulles Intl Airport-Buffalo flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Buffalo 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 Washington, D.C. Dulles Intl Airport-Buffalo 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 Dulles Intl to Buffalo

Have a flexible travel schedule? Discover the best time to fly to Buffalo from Dulles Intl 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 Washington, D.C. Dulles Intl Airport to Buffalo

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

Use this chart to determine the optimal time to book a round-trip flight from Dulles Intl to Buffalo. Price data was last updated on December 12, 2025.

To ensure you get the cheapest price possible for a flight from Washington, D.C. Dulles Intl Airport to Buffalo, you should look to book at least 19 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, April is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Buffalo (average of $157). Flying from Washington, D.C. Dulles Intl Airport to Buffalo in February is currently the most expensive (average of $226). 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 IAD to BUF?

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

It’s typically best to fly out from Washington, D.C. Dulles Intl Airport to Buffalo at noon. Doing so could potentially save you 40% on the flight price compared to flying in the afternoon, which is usually more expensive.

Reviews of airlines servicing Buffalo

Get insights into the airlines that provide service to Buffalo. 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 Buffalo. Reviews last updated December 18, 2025.
Read reviews from past customers who have flown United Airlines from Washington, D.C. Dulles Intl Airport to Buffalo. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,091 reviews

Comfort

7.3

Entertainment

7.1

Boarding

7.7

Crew

8.1

Overall

7.4

Food

6.6

Reviews

1 / 20
4.0
Okay

Kevin,Dec 2025

BOS - EWR

Seems like every United flight has a delay and it’s always someone else’s fault. Step up and take some accountability
United Airlines
7.4
Good
9,091 reviews
United Airlines
7.4
Good
9,091 reviews

Comfort

7.3

Entertainment

7.1

Boarding

7.7

Crew

8.1

Overall

7.4

Food

6.6

Reviews

1 / 20
4.0
Okay

Kevin,Dec 2025

BOS - EWR

Seems like every United flight has a delay and it’s always someone else’s fault. Step up and take some accountability

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to Buffalo. 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 into for flights to Buffalo from Washington, D.C. Dulles Intl?

    For a flight from Washington, D.C. Dulles Intl to Buffalo, you will be flying into Buffalo. Buffalo (BUF) is just 8.3 mi from the center of the city. Buffalo is the only Buffalo airport and it handles 1 inbound flight from Washington, D.C. Dulles Intl per day. 1 airline has flights to Buffalo from Washington, D.C. Dulles Intl on a regular basis.

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

    A quick flight from Washington, D.C. Dulles Intl Airport to Buffalo can take about 5h 41m. Delta provides one of the quickest options available for as low as $199. There are 284 mi between Washington, D.C. Dulles Intl Airport and Buffalo.

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

    Currently priced at $179, United Airlines will fly you from Washington, D.C. Dulles Intl Airport to Buffalo and back. In addition to United Airlines, many other airlines offer competitively priced options for your trip. You may be able to fly from Washington, D.C. Dulles Intl Airport to Buffalo for 41% less than the average price by searching for this airline.

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

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Washington, D.C. Dulles Intl Airport to Buffalo on time: CommutAir (83%), United Airlines (75%), Republic Airways (75%).

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

    On average you can expect to pay $236 for a flight from Washington, D.C. Dulles Intl Airport to Buffalo. The cheapest flight overall is $179 while the most popular route, (Washington, D.C. Dulles Intl - Buffalo) is currently priced at $179.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Dulles Intl to Buffalo 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 Washington, D.C. Dulles Intl Airport to Buffalo?

    Currently, April is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Buffalo (average of $157). Flying from Washington, D.C. Dulles Intl Airport to Buffalo in February is currently the most expensive (average of $226). 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 Buffalo?

Book flights to Buffalo if you plan to visit one of these locations
Lockport
Cheektowaga
Batavia
Williamsville
Orchard Park
Eden
Amherst
West Seneca

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Alternative routes for Dulles Intl to Buffalo

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

Top airline flying from Dulles Intl to Buffalo

Discover the top airline that operate flights from Dulles Intl to Buffalo. 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 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$179Average$307FlexibilityNo cancel feeOn-time69%

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