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Dulles Intl

$109+ 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 8/20. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — IAD
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 62 days in advance, depart on a Friday or Thursday and return on a Thursday

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 June 12, 2025.

Round-trip from

$189
(United Airlines)

One-way from

$109
(Delta)

Popular in

October

Cheapest in

May

Average price

$251

Good round-trip deal

$402 or less

Good one-way deal

$171 or less
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 ($10 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 June 2025
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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 June 12, 2025.

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.
Fri 6/277:45 pmBUF - IAD
Nonstop1h 21mUnited Airlines
Sat 6/2810:20 pmIAD - BUF
Nonstop1h 24mUnited Airlines
Deal found 6/10$189
This Delta deal was found by Cheapflights users on 6/11. 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 8/77:00 amBUF - IAD
1 stop5h 02mDelta
Sun 8/106:00 amIAD - BUF
1 stop6h 10mDelta
Deal found 6/11$199
This American Airlines deal was found by Cheapflights users on 6/11. 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.
Wed 9/176:01 amBUF - IAD
2 stops7h 50mAmerican Airlines
Sat 9/2012:48 pmIAD - BUF
1 stop5h 11mAmerican Airlines
Deal found 6/11$256
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/31:12 pmBUF - IAD
1 stop10h 52mFrontier
Sat 7/56:07 pmIAD - BUF
1 stop22h 09mFrontier
Deal found 6/10$291
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/311:23 amBUF - IAD
2 stops22h 00mMultiple Airlines
Sat 7/512:40 pmIAD - BUF
1 stop22h 04mMultiple Airlines
Deal found 6/10$324

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 12, 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

Fri 6/27

7:45 pm-9:06 pm

Nonstop1h 21m

Washington, D.C. Dulles Intl

Sat 6/28

10:20 pm-11:44 pm

Nonstop1h 24m

$189

BuffaloWashington, D.C.

BUF - IAD

BUFIAD

Buffalo

Thu 8/7

7:00 am-12:02 pm

1 stop5h 02m

Washington, D.C. Dulles Intl

Sun 8/10

6:00 am-12:10 pm

1 stop6h 10m

$199

BuffaloWashington, D.C.

BUF - IAD

BUFIAD

Buffalo

Mon 8/18

2:44 pm-6:52 pm

1 stop4h 08m

Washington, D.C. Dulles Intl

Wed 8/20

7:44 am-1:50 pm

1 stop6h 06m

$263

BuffaloWashington, D.C.

BUF - IAD

BUFIAD

Buffalo

Thu 7/3

1:12 pm-12:04 am

1 stop10h 52m

Washington, D.C. Dulles Intl

Sat 7/5

6:07 pm-4:16 pm

1 stop22h 09m

$291

BuffaloWashington, D.C.

BUF - IAD

BUFIAD

Buffalo

Thu 7/3

11:23 am-9:23 am

2 stops22h 00m

Washington, D.C. Dulles Intl

Sat 7/5

12:40 pm-10:44 am

1 stop22h 04m

$324

BuffaloWashington, D.C.

BUF - IAD

BUFIAD

Buffalo

Wed 8/20

6:20 am-11:32 am

1 stop5h 12m

$109

BuffaloWashington, D.C.

BUF - IAD

BUFIAD

Buffalo

Sat 8/23

8:00 pm-9:19 pm

Nonstop1h 19m

$113

BuffaloWashington, D.C.

BUF - IAD

BUFIAD

Buffalo

Wed 7/2

10:09 am-5:11 pm

1 stop7h 02m

$130

BuffaloWashington, D.C.

BUF - IAD

BUFIAD

Buffalo

Fri 7/11

11:29 am-11:43 am

1 stop24h 14m

$144

BuffaloWashington, D.C.

BUF - IAD

BUFIAD

Buffalo

Sun 8/17

1:14 pm-12:12 am

1 stop10h 58m

$162

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 12 results
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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 June 9, 2025.

Booking 62 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, August is the cheapest month in which you can book a flight from Buffalo to Washington, D.C. Dulles Intl Airport (average of $309). Flying from Buffalo to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of $349). 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 12, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 61% 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 8, 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.

Weekly flight availability from Buffalo to Washington, D.C. Dulles Intl Airport

Explore weekly flight availability from Buffalo to Dulles Intl. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated June 12, 2025.

The most flights from BUF to IAD are scheduled on a Monday (13 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (8 on average).

Rainfall in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Washington, D.C. Dulles Intl Airport ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. Dulles Intl Airport when rainfall is around 2.6 in.

Temperature in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Washington, D.C. Dulles Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

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 12, 2025.
Get a feel of what it's like to fly with Delta, Qatar Airways and United Airlines from Buffalo to Washington, D.C. by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,950 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kymberlee,Oct 2024

JFK - ATL

Overall it was good on the flight. Before the flight with checking the bag at JFK was a nightmare. It took way too long and the Delta concierge was very rude to everyone. But other than that it was fine.
Delta
8.0
Very good
7,950 reviews
Delta
8.0
Very good
7,950 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kymberlee,Oct 2024

JFK - ATL

Overall it was good on the flight. Before the flight with checking the bag at JFK was a nightmare. It took way too long and the Delta concierge was very rude to everyone. But other than that it was fine.
Qatar Airways
7.4
Good
3,584 reviews
Delta
8.0
Very good
7,950 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kymberlee,Oct 2024

JFK - ATL

Overall it was good on the flight. Before the flight with checking the bag at JFK was a nightmare. It took way too long and the Delta concierge was very rude to everyone. But other than that it was fine.
United Airlines
7.4
Good
8,790 reviews
Delta
8.0
Very good
7,950 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kymberlee,Oct 2024

JFK - ATL

Overall it was good on the flight. Before the flight with checking the bag at JFK was a nightmare. It took way too long and the Delta concierge was very rude to everyone. But other than that it was fine.
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,950 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kymberlee,Oct 2024

JFK - ATL

Overall it was good on the flight. Before the flight with checking the bag at JFK was a nightmare. It took way too long and the Delta concierge was very rude to everyone. But other than that it was fine.
Sun Country Air
6.9
Okay
345 reviews
Delta
8.0
Very good
7,950 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kymberlee,Oct 2024

JFK - ATL

Overall it was good on the flight. Before the flight with checking the bag at JFK was a nightmare. It took way too long and the Delta concierge was very rude to everyone. But other than that it was fine.

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 11 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.

  • What are the cheapest airlines flying from Buffalo to Washington, D.C. Dulles Intl Airport round-trip?

    According to our current data, United Airlines ($189), Delta ($199), and American Airlines ($256) offers the cheapest pricing from Buffalo to Washington, D.C. Dulles Intl Airport. United Airlines is priced at 28% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from Buffalo to Washington, D.C. Dulles Intl Airport one-way?

    The cheapest airline one-way is Delta, with whom users have recently found tickets for as low as $109. However, be on the lookout for offers from United Airlines and American Airlines, as they are both options that can get you from Buffalo to Washington, D.C. Dulles Intl Airport for a low price.

  • 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: GoJet (100%), Mesa Airlines (91%), CommutAir( 88%).

  • 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 $1,175, our data indicates the cheapest price to be $109. 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, August is the cheapest month in which you can book a flight from Buffalo to Washington, D.C. Dulles Intl Airport (average of $309). Flying from Buffalo to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of $349). 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
Arlington
Alexandria
Woodbridge
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Silver Spring
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Fredericksburg
Gaithersburg
Fairfax
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Easton
Herndon
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National Harbor
Springfield
Manassas

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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.
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Saranac Lake to Baltimore flights
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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 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$189Average$267FlexibilityNo cancel feeOn-time69%

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