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$98+ 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 10/5. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — BUF
Aug 25 — Sep 11
Mon 8/25
Mon 9/1
1 adult, Economy
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Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to Buffalo are usually found in January or March, booked 19 days in advance, depart on a Thursday or Tuesday and return on a Friday

Cheap 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 August 20, 2025.

Round-trip from

$209
(Delta)

One-way from

$98
(Kiwi.com)

Popular in

November

Cheapest in

January

Average price

$304

Good round-trip deal

$282 or less

Good one-way deal

$212 or less
From Washington, D.C. Dulles Intl to Buffalo
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One-way flight from Washington, D.C. Dulles Intl to Buffalo
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Highest demand for flights based on searches. 10% potential increase in price ($38 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($8 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 Washington, D.C. Dulles Intl to Buffalo.
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Price to beat on a one-way flight from Washington, D.C. Dulles Intl to Buffalo.
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Find 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 August 20, 2025.

This Delta deal was found by Cheapflights users on 8/18. 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.
Wed 9/31:00 pmIAD - BUF
1 stop5h 07mDelta
Sat 9/66:20 amBUF - IAD
1 stop5h 12mDelta
Deal found 8/18$209
This Frontier deal was found by Cheapflights users on 8/18. 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 9/46:10 amIAD - BUF
1 stop5h 12mFrontier
Sun 9/77:41 pmBUF - IAD
2 stops17h 14mFrontier
Deal found 8/18$210
This FlightHub deal was found by Cheapflights users on 8/18. 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 10/109:38 pmIAD - BUF
1 stop20h 19mFrontier
Mon 10/1312:15 pmBUF - IAD
1 stop11h 56mFrontier
Deal found 8/18$212
This FlightHub deal was found by Cheapflights users on 8/18. 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.
Sat 10/47:14 pmIAD - BUF
1 stop22h 13mFrontier
Mon 10/612:17 pmBUF - IAD
1 stop11h 58mFrontier
Deal found 8/18$214
This Orbitz deal was found by Cheapflights users on 8/18. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/186:10 amIAD - BUF
1 stop5h 12mFrontier
Fri 9/1912:17 pmBUF - IAD
1 stop11h 58mFrontier
Deal found 8/18$216
This FlightHub deal was found by Cheapflights users on 8/18. 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 9/126:10 amIAD - BUF
1 stop5h 12mFrontier
Sun 9/147:41 pmBUF - IAD
1 stop22h 43mFrontier
Deal found 8/18$217
This FlightHub deal was found by Cheapflights users on 8/19. 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 10/316:00 amIAD - BUF
1 stop7h 47mFrontier
Sun 11/22:42 pmBUF - IAD
1 stop9h 29mFrontier
Deal found 8/19$218
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/308:23 pmIAD - BUF
1 stop4h 30mDelta
Tue 9/26:50 pmBUF - IAD
1 stop4h 36mDelta
Deal found 8/17$219
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/187:59 pmIAD - BUF
1 stop3h 57mDelta
Mon 10/277:30 pmBUF - IAD
1 stop3h 31mDelta
Deal found 8/17$220
This Frontier deal was found by Cheapflights users on 8/18. 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 8/216:10 amIAD - BUF
1 stop5h 30mFrontier
Mon 8/2510:12 amBUF - IAD
1 stop10h 36mFrontier
Deal found 8/18$221
This FlightHub deal was found by Cheapflights users on 8/18. 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.
Sat 10/114:22 pmIAD - BUF
1 stop18h 57mFrontier
Mon 10/1312:15 pmBUF - IAD
1 stop11h 56mFrontier
Deal found 8/18$222
This Delta deal was found by Cheapflights users on 8/18. 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 9/128:17 pmIAD - BUF
1 stop18h 51mDelta
Mon 9/157:34 pmBUF - IAD
1 stop3h 32mDelta
Deal found 8/18$223

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 August 20, 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

Thu 9/4

8:23 pm-12:53 am

1 stop4h 30m

Buffalo

Sat 9/6

6:50 pm-11:26 pm

1 stop4h 36m

$209

Washington, D.C.Buffalo

IAD - BUF

IADBUF

Washington, D.C. Dulles Intl

Wed 9/3

1:00 pm-6:07 pm

1 stop5h 07m

Buffalo

Sat 9/6

6:20 am-11:32 am

1 stop5h 12m

$209

Washington, D.C.Buffalo

IAD - BUF

IADBUF

Washington, D.C. Dulles Intl

Thu 9/4

6:10 am-11:22 am

1 stop5h 12m

Buffalo

Sun 9/7

7:41 pm-12:55 pm

2 stops17h 14m

$210

Washington, D.C.Buffalo

IAD - BUF

IADBUF

Washington, D.C. Dulles Intl

Fri 11/7

6:00 am-1:47 pm

1 stop7h 47m

Buffalo

Mon 11/10

2:42 pm-12:11 am

1 stop9h 29m

$210

Washington, D.C.Buffalo

IAD - BUF

IADBUF

Washington, D.C. Dulles Intl

Fri 10/10

9:38 pm-5:57 pm

1 stop20h 19m

Buffalo

Mon 10/13

12:15 pm-12:11 am

1 stop11h 56m

$212

Washington, D.C.Buffalo

IAD - BUF

IADBUF

Washington, D.C. Dulles Intl

Sat 10/4

7:14 pm-5:27 pm

1 stop22h 13m

Buffalo

Mon 10/6

12:17 pm-12:15 am

1 stop11h 58m

$214

Washington, D.C.Buffalo

IAD - BUF

IADBUF

Washington, D.C. Dulles Intl

Thu 9/18

6:10 am-11:22 am

1 stop5h 12m

Buffalo

Fri 9/19

12:17 pm-12:15 am

1 stop11h 58m

$216

Washington, D.C.Buffalo

IAD - BUF

IADBUF

Washington, D.C. Dulles Intl

Fri 9/12

6:10 am-11:22 am

1 stop5h 12m

Buffalo

Sun 9/14

7:41 pm-6:24 pm

1 stop22h 43m

$217

Washington, D.C.Buffalo

IAD - BUF

IADBUF

Washington, D.C. Dulles Intl

Fri 10/31

6:00 am-1:47 pm

1 stop7h 47m

Buffalo

Sun 11/2

2:42 pm-12:11 am

1 stop9h 29m

$218

Washington, D.C.Buffalo

IAD - BUF

IADBUF

Washington, D.C. Dulles Intl

Sat 8/30

8:23 pm-12:53 am

1 stop4h 30m

Buffalo

Tue 9/2

6:50 pm-11:26 pm

1 stop4h 36m

$219

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/19

Showing 1-10 of 20 results
1
2

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 August 8, 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, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Buffalo (average of $256). Flying from Washington, D.C. Dulles Intl Airport to Buffalo in December 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 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 August 20, 2025.

It’s typically best to fly out from Washington, D.C. Dulles Intl Airport to Buffalo in the afternoon. Doing so could potentially save you 11% on the flight price compared to flying at noon, 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 August 20, 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
8,928 reviews

Comfort

7.3

Food

6.6

Crew

8.1

Overall

7.4

Entertainment

7.1

Boarding

7.7

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
8,928 reviews
United Airlines
7.4
Good
8,928 reviews

Comfort

7.3

Food

6.6

Crew

8.1

Overall

7.4

Entertainment

7.1

Boarding

7.7

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 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 6 inbound flights 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 4h 30m. Delta provides one of the quickest options available for as low as $209. There are 284 mi between Washington, D.C. Dulles Intl Airport and Buffalo. Both multi-stop and nonstop flights can be found to your destination and back.

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

    Currently priced at $185, 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: Mesa Airlines (79%), CommutAir (69%), Copa Airlines (67%).

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

    On average you can expect to pay $342 for a flight from Washington, D.C. Dulles Intl Airport to Buffalo. The cheapest flight overall is $145 while the most popular route, (Washington, D.C. Dulles Intl - Buffalo) is currently priced at $158.

  • 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, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Buffalo (average of $256). Flying from Washington, D.C. Dulles Intl Airport to Buffalo in December 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 Buffalo?

Book flights to Buffalo if you plan to visit one of these locations
Lockport
Orchard Park
Batavia
Williamsville
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.
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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 August 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$185Average$318FlexibilityNo cancel feeOn-time69%

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