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BUF - IAD

Find cheap flights from Buffalo to Washington Dulles Airport from $89

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Buffalo to Dulles Intl departing on 5/21. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Fri 5/24
Fri 5/31

Search hundreds of travel sites at once for deals on flights to Washington Dulles Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Buffalo to Washington, D.C., as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Buffalo to Washington, D.C., as well as popular online travel agencies
In the last 7 days travelers have searched 45,119,101 times on KAYAK, and here is why:

Save 22% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Bundle and saveSave money when you bundle your flight + hotel.

Cheap flight deals from Buffalo to Dulles Intl (BUF-IAD)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Buffalo to Dulles Intl that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
7:59 pm - 9:17 pmBUF-IAD
1h 18mnonstop
8:20 am - 9:41 amIAD-BUF
1h 21mnonstop
$177United Airlines
Find Deal
Wed, May 22 - Wed, May 29
7:48 pm - 9:06 pmBUF-IAD
1h 18mnonstop
10:15 pm - 11:32 pmIAD-BUF
1h 17mnonstop
$178United Airlines
Find Deal
Fri, Sep 13 - Tue, Sep 17
6:15 am - 7:33 amBUF-IAD
1h 18mnonstop
8:25 am - 9:46 amIAD-BUF
1h 21mnonstop
$187United Airlines
Find Deal
Tue, May 14 - Thu, May 16
6:15 am - 7:32 amBUF-IAD
1h 17mnonstop
6:05 am - 10:33 amIAD-BUF
4h 28m1 stop
$188United Airlines
Find Deal
Fri, Aug 23 - Sun, Sep 1
6:00 am - 11:15 amBUF-IAD
5h 15m1 stop
8:12 pm - 12:32 amIAD-BUF
4h 20m1 stop
$194American Airlines
Find Deal
Fri, May 31 - Sun, Jun 2
6:00 am - 10:52 amBUF-IAD
4h 52m1 stop
8:12 pm - 12:32 amIAD-BUF
4h 20m1 stop
$195American Airlines
Find Deal
Sat, Jun 1 - Sun, Jun 2
5:55 pm - 10:46 pmBUF-IAD
4h 51m1 stop
12:30 pm - 6:55 pmIAD-BUF
6h 25m1 stop
$197Delta
Find Deal
Sat, Sep 7 - Wed, Sep 11
6:12 pm - 10:52 pmBUF-IAD
4h 40m1 stop
4:59 pm - 11:56 pmIAD-BUF
6h 57m1 stop
$217Delta
Find Deal
Sat, May 25 - Mon, May 27
5:51 pm - 11:47 pmBUF-IAD
5h 56m1 stop
8:55 am - 1:01 pmIAD-BUF
4h 06m1 stop
$221American Airlines
Find Deal
Fri, Sep 13 - Tue, Sep 17
6:12 pm - 10:52 pmBUF-IAD
4h 40m1 stop
4:59 pm - 11:56 pmIAD-BUF
6h 57m1 stop
$237Delta
Find Deal
Tue, May 14 - Wed, May 15

Flights from Buffalo to Dulles Intl - Travel Insights & Trends

Get data-powered insights and trends into flights from Buffalo to Dulles Intl to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Buffalo to Washington Dulles Airport?

The average price of all flights from Buffalo to Washington, D.C. Dulles Intl Airport clicked on KAYAK for each day over the last 12 months.
If you are looking for a flight deal from Buffalo to Washington Dulles Airport, look for departures on Wednesdays and avoid leaving on a Sunday, as it's usually the priciest day. When flying back from Washington Dulles Airport, Monday is the cheapest day to fly and Sunday is the most expensive.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Buffalo to Washington, D.C. Dulles Intl Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from Buffalo to Washington, D.C. Dulles Intl Airport is February, where tickets cost $240 on average. On the other hand, the most expensive months are May and January, where the average cost of tickets is $384 and $379 respectively.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Buffalo to Washington, D.C. Dulles Intl Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from Buffalo to Washington, D.C. Dulles Intl Airport, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 34 days before departure.

Which airlines provide the cheapest flights from Buffalo to Washington Dulles Airport?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 3 days, United Airlines offered the best one-way deal for that route, at $89. KAYAK users also found Buffalo to Washington Dulles Airport round-trip flights on United Airlines from $177 and on American Airlines from $194.

Which airlines fly non-stop between Buffalo and Washington, D.C. Dulles Intl Airport?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for flights from Buffalo to Washington, D.C. Dulles Intl Airport.
There is just one airline that flies from Buffalo to Washington, D.C. Dulles Intl Airport direct and that is United Airlines. The best one-way deal found from United Airlines for the route is $188.

How many flights are there between Buffalo and Washington, D.C. Dulles Intl Airport per day?

Each day, there are between 5 and 8 nonstop flights that take off from Buffalo and land in Washington, D.C. Dulles Intl Airport, with an average flight time of 1h 18m. The most common departure time is 7:00 pm and most flights take off in the afternoon. Each week, there are 44 flights. The most frequent day of departure is Thursday, when 18% of all weekly flights depart. The fewest flights depart on a Sunday.

Which cabin class options are there for flights between Buffalo and Washington, D.C. Dulles Intl Airport?

The average price of flights for each cabin class for the route found by users searching on KAYAK over the last 2 weeks.
There are 4 cabin class options for the route. These are First, Business, Economy and Prem Economy. Perform a search on KAYAK to find the latest prices and availability for all cabin fares, which differ across airlines.

How long does a flight from Buffalo to Washington Dulles Airport take?

The average nonstop flight takes 1h 14m, covering a distance of 284 miles.

What’s the earliest departure time from Buffalo to Washington Dulles Airport?

Early birds can take the earliest flight from Buffalo at 6:15 am and will be landing in Washington, D.C. Dulles Intl Airport at 7:33 am.

What’s the latest departure time from Buffalo to Washington Dulles Airport?

If you prefer to fly at night, the latest flight from Buffalo to Washington, D.C. Dulles Intl Airport jets off at 7:59 pm and lands at 9:18 pm.

Good to know

Low season

February

High season

October

Cheapest flight

$89
Best time to beat the crowds with an average 25% drop in price.
Most popular time to fly with an average 7% increase in price.
Flight from Buffalo to Washington Dulles Airport

When to book flights from Buffalo to Dulles Intl

Are your dates flexible? Find out the best times to travel from Buffalo to Dulles Intl based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Buffalo to Washington Dulles Airport flights

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

    In the last 3 days, the lowest price for a flight from Buffalo to Washington, D.C. Dulles Intl Airport was $89 for a one-way ticket and $177 for a round-trip.

  • Do I need a passport to fly between Buffalo and Washington Dulles Airport?

    A passport is not required to fly from Buffalo to Washington Dulles Airport.

  • Which airports will I be using when flying from Buffalo to Washington Dulles Airport?

    When flying out of Buffalo you will be using Buffalo. You will be landing at Washington Dulles Airport, also known as Washington, D.C. Dulles Intl.

  • Which airlines offer Wi-Fi service onboard planes from Buffalo to Washington Dulles Airport?

    American Airlines, JetBlue, Sun Country Air, Delta, and Silver Airways offer inflight Wi-Fi service on the Buffalo to Washington Dulles Airport flight route.

  • Which aircraft models fly most regularly from Buffalo to Washington Dulles Airport?

    The Embraer ERJ-135 / ERJ-140 / ERJ-145 is the aircraft model that flies most regularly on the Buffalo to Washington Dulles Airport flight route.

  • Which airline alliances offer flights from Buffalo to Washington Dulles Airport?

    Star Alliance is the only airline alliance operating flights between Buffalo and Washington Dulles Airport.

  • On which days can I fly direct from Buffalo to Washington Dulles Airport?

    There are nonstop flights from Buffalo to Washington Dulles Airport on a daily basis.

  • Which is the best airline for flights from Buffalo to Washington, D.C., Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from Buffalo to Washington, D.C. are Delta and United Airlines. With an average price for the route of $199 and an overall rating of 8.0, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $335 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Buffalo to Washington Dulles Airport?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Buffalo to Washington Dulles Airport.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Buffalo to Washington Dulles Airport?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Washington Dulles Airport from Buffalo is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Buffalo to Washington Dulles Airport?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Washington Dulles Airport with an airline and back to Buffalo with another airline. Booking your flights between Buffalo and IAD can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Buffalo to Washington Dulles Airport?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Washington Dulles Airport from Buffalo up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding a cheap flight from BUF to Washington Dulles Airport

  • Looking for a cheap flight? 25% of our users found flights on this route for $157 or less one-way and $386 or less round-trip.

Prefer to fly non-stop from Buffalo to Washington Dulles Airport?

Find which airlines fly direct from Buffalo to Dulles Intl, which days they fly and book direct flights.

Nonstop departures

Buffalo to Washington, D.C. Dulles Intl

Monday

Avianca, Brussels Airlines, Copa Airlines, +2 more

Avianca, Brussels Airlines, +3 more

Tuesday

Avianca, Brussels Airlines, Copa Airlines, +2 more

Avianca, Brussels Airlines, +3 more

Wednesday

Avianca, Brussels Airlines, Copa Airlines, +2 more

Avianca, Brussels Airlines, +3 more

Thursday

Avianca, Brussels Airlines, Copa Airlines, +2 more

Avianca, Brussels Airlines, +3 more

Friday

Avianca, Brussels Airlines, Copa Airlines, +2 more

Avianca, Brussels Airlines, +3 more

Saturday

Avianca, Brussels Airlines, Copa Airlines, +2 more

Avianca, Brussels Airlines, +3 more

Sunday

Avianca, Brussels Airlines, Copa Airlines, +2 more

Avianca, Brussels Airlines, +3 more

See more direct flights

Nonstop returns

Washington, D.C. Dulles Intl to Buffalo

Monday

Avianca, Brussels Airlines, Copa Airlines, +2 more

Avianca, Brussels Airlines, +3 more

Tuesday

Avianca, Brussels Airlines, Copa Airlines, +2 more

Avianca, Brussels Airlines, +3 more

Wednesday

Avianca, Brussels Airlines, Copa Airlines, +2 more

Avianca, Brussels Airlines, +3 more

Thursday

Avianca, Brussels Airlines, Copa Airlines, +2 more

Avianca, Brussels Airlines, +3 more

Friday

Avianca, Brussels Airlines, Copa Airlines, +2 more

Avianca, Brussels Airlines, +3 more

Saturday

Avianca, Brussels Airlines, Copa Airlines, +2 more

Avianca, Brussels Airlines, +3 more

Sunday

Avianca, Brussels Airlines, Copa Airlines, +2 more

Avianca, Brussels Airlines, +3 more

See more direct flights
See more direct flights

Top airlines flying from Buffalo to Dulles Intl

 
See real verified KAYAK customer reviews for airlines flying from Buffalo to Washington, D.C.. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Buffalo to Dulles Intl? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
DeltaOverall score based on 11004 reviews
8.6crew
7.9comfort
7.5food
8.0entertainment
8.2boarding
Airline reviews

I'm a larger, athletic guy (6'2", 260lbs powerlifter) and I found the seats incredibly uncomfortable with minimal leg room, especially in a window seat. Now, I full understand that being smaller may change my view but even if I was 80lbs less, my legs would be the same size and I was sandwiched between my seat and the seat in front of me.

6.0 GoodDan, Apr 2024LGA - DEN
Read more about Delta reviews

I'm a larger, athletic guy (6'2", 260lbs powerlifter) and I found the seats incredibly uncomfortable with minimal leg room, especially in a window seat. Now, I full understand that being smaller may change my view but even if I was 80lbs less, my legs would be the same size and I was sandwiched between my seat and the seat in front of me.

Seat back monitors and outlets were dead and not working.

It was a crowded flight. They did the best they could.

Service was good for such a short flight. Small plane but smooth flight.

The flight was delayed but we got to our final destination.

Uncomfortable seats on 14 hour flight. Mediocre food. On time and great crew.

The helpful attitude of the staff, and being a wheelchair passenger everyone was helpful and understanding. The trip was made comfortable by the upgraded seat which was given without my request, that was a great surprise. Thank you Delta.

We just spent $6000 on our first trip since pre COVID and we were stranded on the runway of our departing airport for 2 hours and 15 minutes while our layover was only an hour and a half. We were told by the pilot we were next for de-icing and then got bumped by 3 other planes. Pilot went on to say they only had one guy working the de-icing where they usually have at least 2. In Rochester. In the heart of winter. Someone missed a step and should be fired. I'm not done.

Everything went well with the flight. But one of the flight attendants had on inappropriate pants. She had on an old worn out pair of sweat pants. The back seam was unrivaled and should not have been worn for work. If I had not seen her in the airport with the standard type of luggage, I certainly would not have thought she was working for Delta. Not a good look at all for representation.

Great!! I haven’t had a bad experience with them.

It got me where I needed it to; not much more. It had no competition so that was why I chose it.

Plane didn’t even make it off the ground. We all had to get off and walk to a different terminal (lots of confusion) to get on a different plane. Landed fairly late, connections missed.

Crowded flight, but upbeat and kind crew. Pilot greeted us at door, flight attendant thanked a number of “special” passengers for their business, another addressed an eight-year old boy as “young man.” United obviously trying to up their game, but though all of that is nice and notable, flying still feels like moving along a human assembly line, being herded into one small space after another (boarding areas with too few seats, planes with limited personal space, shuttles (IAD) packed too full.

It was ok until we got to DC and I wanted to use my United Club pass and the snobbish receptionist said that they don’t take one pass. It took me everything itch of patience not to tell her off

Food choice was poor and we had to buy on board snacks.

We were offer chocolate cookies , not everyone eat chocolate. Thank you

Lost luggage again. Our second trip to Mykonos, and 2nd time no luggage.

Flight was well orchestrated, made up time despite circling a bit all good on United. Travelers can just be so into themselves that common courtesy has gone out window for some, but that’s not on United.

Loading was quick and efficient. The bate and switch with discount tickets were you are forced to pay for bag.

Good flight, comfortable seats and very quick passage through Heathrow. Boarding in Washington was cramped and not well organized, but the rest was perfect.

Book cheap flights from Buffalo to Washington, D.C.

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Buffalo to Washington, D.C. found on KAYAK in the last 72 hours.
5/21Tue
nonstopUnited Airlines
1h 18mBUF-IAD
$89
7/13Sat
nonstopUnited Airlines
1h 17mBUF-IAD
$90
5/17Fri
nonstopUnited Airlines
1h 18mBUF-IAD
$96
5/31Fri
1 stopAmerican Airlines
5h 15mBUF-IAD
$97
5/30Thu
1 stopDelta
4h 40mBUF-IAD
$98
5/18Sat
nonstopUnited Airlines
1h 19mBUF-IAD
$99
5/14Tue
1 stopDelta
4h 40mBUF-IAD
$108
5/8Wed
1 stopAmerican Airlines
4h 19mBUF-IAD
$163
7/29Mon
1 stopSun Country Air
20h 44mBUF-IAD
$198
7/22Mon
1 stopSun Country Air
20h 31mBUF-IAD
$268

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Last minute flights from Buffalo to Dulles Intl

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Buffalo to Washington, D.C. that are departing in the next 10 days.
4/28Sun
nonstopUnited Airlines
1h 20mBUF-IAD
4/30Tue
multi-stopUnited Airlines
14h 33mIAD-BUF
$475
4/28Sun
multi-stopUnited Airlines
5h 44mBUF-IAD
4/30Tue
multi-stopUnited Airlines
14h 33mIAD-BUF
$480
4/28Sun
nonstopUnited Airlines
1h 20mBUF-IAD
4/30Tue
nonstopUnited Airlines
1h 22mIAD-BUF
$484
4/28Sun
multi-stopUnited Airlines
5h 44mBUF-IAD
4/30Tue
nonstopUnited Airlines
1h 18mIAD-BUF
$493
4/25Thu
nonstopUnited Airlines
1h 19mBUF-IAD
4/26Fri
nonstopUnited Airlines
1h 18mIAD-BUF
$499
4/25Thu
nonstopUnited Airlines
1h 19mBUF-IAD
4/26Fri
nonstopUnited Airlines
1h 21mIAD-BUF
$500
4/25Thu
multi-stopAmerican Airlines
4h 26mBUF-IAD
4/26Fri
multi-stopAmerican Airlines
4h 40mIAD-BUF
$515
4/25Thu
multi-stopDelta
5h 14mBUF-IAD
4/26Fri
multi-stopDelta
5h 48mIAD-BUF
$518
4/28Sun
multi-stopAmerican Airlines
4h 26mBUF-IAD
4/29Mon
multi-stopAmerican Airlines
9h 25mIAD-BUF
$520
4/25Thu
multi-stopAmerican Airlines
8h 56mBUF-IAD
4/26Fri
multi-stopAmerican Airlines
4h 26mIAD-BUF
$521

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Buffalo - Washington Dulles Airport Flights

Departure:

Buffalo (BUF)United States

Destination:

Washington Dulles Airport (IAD)United States

Return flight deals:

Washington Dulles Airport - Buffalo

Cabin classes:

$1,522
$1,158
$1,350
$218