IAD - BUF

$55 Find Cheap Flights from Washington Dulles Airport to Buffalo

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Dulles Intl to Buffalo departing on 12/4. 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
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Buffalo

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Buffalo, 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 Washington, D.C. to Buffalo, as well as popular online travel agencies
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 23% or moreCompare multiple travel sites with one search.

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

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

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

Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Dulles Intl to Buffalo (IAD-BUF)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Dulles Intl to Buffalo 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 for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Dulles Intl to Buffalo

Thu, Nov 13 - Sat, Nov 15
United Airlines Logo
8:25 am - 9:48 amIAD-BUF
1h 23mnonstop
United Airlines Logo
10:36 am - 11:55 amBUF-IAD
1h 19mnonstop
$209United Airlines
Find Deal
Sun, Dec 14 - Mon, Dec 15
Frontier Logo
9:21 am - 4:00 pmIAD-BUF
6h 39m1 stop
Frontier Logo
11:40 am - 5:25 pmBUF-IAD
5h 45m1 stop
$210Frontier
Find Deal
Fri, Dec 5 - Mon, Dec 8
Frontier Logo
9:20 pm - 2:15 pmIAD-BUF
16h 55m1 stop
Frontier Logo
11:40 am - 5:25 pmBUF-IAD
5h 45m1 stop
$212Frontier
Find Deal
Mon, Dec 29 - Mon, Jan 5
United Airlines Logo
8:20 am - 9:46 amIAD-BUF
1h 26mnonstop
United Airlines Logo
7:48 pm - 9:20 pmBUF-IAD
1h 32mnonstop
$213United Airlines
Find Deal
Thu, Dec 11 - Sun, Dec 14
United Airlines Logo
12:50 pm - 2:22 pmIAD-BUF
1h 32mnonstop
United Airlines Logo
3:00 pm - 4:21 pmBUF-IAD
1h 21mnonstop
$215United Airlines
Find Deal
Wed, Apr 29 - Wed, May 6
Delta Logo
1:00 pm - 6:57 pmIAD-BUF
5h 57m1 stop
Delta Logo
7:25 pm - 10:59 pmBUF-IAD
3h 34m1 stop
$219Delta
Find Deal
Mon, Dec 29 - Mon, Jan 5
Frontier Logo
9:58 pm - 12:52 pmIAD-BUF
14h 54m1 stop
Frontier Logo
10:43 am - 9:03 pmBUF-IAD
10h 20m1 stop
$230Frontier
Find Deal
Wed, Nov 12 - Wed, Nov 19
American Airlines Logo
7:55 am - 12:07 pmIAD-BUF
4h 12m1 stop
American Airlines Logo
6:33 pm - 11:07 pmBUF-IAD
4h 34m1 stop
$259American Airlines
Find Deal
Sat, Nov 15 - Sun, Nov 16
Delta Logo
5:03 pm - 10:57 pmIAD-BUF
5h 54m1 stop
Delta Logo
6:12 am - 10:24 amBUF-IAD
4h 12m1 stop
$274Delta
Find Deal
Fri, Dec 5 - Mon, Dec 8
American Airlines Logo
7:59 am - 12:10 pmIAD-BUF
4h 11m1 stop
American Airlines Logo
6:35 pm - 11:08 pmBUF-IAD
4h 33m1 stop
$283American Airlines
Find Deal

Everything you should know

Top airlines
United Airlines
Cheapest • from $209 (round-trip)
United Airlines
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
9 weeks
in advance
Our data shows that travelers who book at least 9 weeks in advance save around 33% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
January
Cheapest • 17% price drop
December
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest round-trip
$209
Overall average: $356
United Airlines
Thu 11/13Sat 11/15
IAD - BUF • Non-stop
Cheapest one-way
$55
Typical prices: $243-$328
Frontier
Thu 12/4
IAD - BUF • 1 stop
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Buffalo!
Booking Insights

KAYAK's insights & trends for Dulles Intl to Buffalo flights

Get data-powered insights and trends into flights from Dulles Intl to Buffalo 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 Washington Dulles Airport to Buffalo?

The average price of all round-trip flights from Washington, D.C. Dulles Intl Airport to Buffalo clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from Washington Dulles Airport to Buffalo, look for departures on Saturdays and avoid leaving on a Sunday, as it's usually the priciest day. When flying back from Buffalo, Friday is the cheapest day to fly and Saturday is the most expensive.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Washington, D.C. Dulles Intl Airport to Buffalo, 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 Washington, D.C. Dulles Intl Airport to Buffalo is January, where tickets cost $254 (return) on average. On the other hand, the most expensive months are November and February, where the average cost of round-trip tickets is $356 and $352 respectively.

Can I save money by flying with a layover from Washington, D.C. Dulles Intl Airport to Buffalo?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 1 stop layover the cheapest option at $354 on average.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Washington, D.C. Dulles Intl Airport to Buffalo, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Washington, D.C. Dulles Intl Airport to Buffalo, you should book around 9 weeks before departure, which saves you about 33% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 22 weeks before departure.

Find deals

Good to know

Low seasonJanuary
Cheapest flight$55
Best time to beat the crowds with an average 17% drop in price.
Most popular time to fly and prices are also 3% lower on average.
Flight from Washington Dulles Airport to Buffalo

When to book flights from Dulles Intl to Buffalo

Are your dates flexible? Find out the best times to travel from Dulles Intl to Buffalo 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 Washington Dulles Airport to Buffalo flights

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

    In the last 3 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to Buffalo was $55 for a one-way ticket and $209 for a round-trip.

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

    No

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

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

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

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

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

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

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

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

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

    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 Washington Dulles Airport to Buffalo.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Buffalo from Washington Dulles Airport 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 Washington Dulles Airport to Buffalo?

    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 Buffalo with an airline and back to Washington Dulles Airport with another airline. Booking your flights between Washington Dulles Airport and BUF 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 Washington Dulles Airport to Buffalo?

    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 Buffalo from Washington Dulles Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Washington, D.C. Dulles Intl Airport to Buffalo

  • Looking for a cheap flight? 25% of our users found flights on this route for $203 or less one-way and $239 or less round-trip.

Prefer to fly direct from Washington Dulles Airport to Buffalo?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Washington, D.C. Dulles Intl to Buffalo.
Find which airlines fly direct from Washington, D.C. Dulles Intl Airport to Buffalo Airport, which days they fly and book direct flights.

Direct departures

Washington, D.C. Dulles Intl to Buffalo

Monday

United Airlines

United Airlines

Tuesday

United Airlines

United Airlines

Wednesday

United Airlines

United Airlines

Thursday

United Airlines

United Airlines

Friday

United Airlines

United Airlines

Saturday

United Airlines

United Airlines

Sunday

United Airlines

United Airlines

See more direct flights

Direct returns

Buffalo to Washington, D.C. Dulles Intl

Monday

United Airlines

United Airlines

Tuesday

United Airlines

United Airlines

Wednesday

United Airlines

United Airlines

Thursday

United Airlines

United Airlines

Friday

United Airlines

United Airlines

Saturday

United Airlines

United Airlines

Sunday

United Airlines

United Airlines

See more direct flights

Reviews of the top airline flying from Dulles Intl to Buffalo

 
See real verified KAYAK customer reviews for airlines flying from Washington, D.C. to Buffalo. 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 Dulles Intl to Buffalo? 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.
7.4
United AirlinesOverall score based on 8995 reviews
6.6Food
7.7Boarding
8.1Crew
7.3Comfort
7.1Entertainment
Airline reviews

Short flight but an "eager to help" crew made the journey more enjoyable!

10.0 ExcellentAlan, Oct 2025IAD - PVD
Read more United Airlines reviews

Short flight but an "eager to help" crew made the journey more enjoyable!

During booking, I kept trying submitting my payment from the Mexican website and it didn't work. After I had the idea to change it to the Canadian website, it worked but I had to be charged the equivalent of 50 CAD more. I received the clear instruction that I would only be able to check-in at the airport and that it was impossible to select a seat 24 hours before departure, that I had to pay 144 CAD to do so, although not only was I able to check-in 24 hours before departure, but I could have selected my seats for free then. All in all, I almost threw $200 out the window due to misleading information. Besides, the app kept crashing, the information to get to the gate on the app was inaccurate, my gate was switched and I was only informed once in the air (luckily I had noticed the departure pannel), I was not addressed in my language beforehand and even if I tried I was immediately answered in English (which meant the crew understood but didn't want to answer accordingly), there was only one snack & beverage service on my medium haul flight and no beverage service on my short haul flight. To be fair, the planes were comfortable, the crew apart from the language issue was helpful, dynamic and engaging, the plane was clean and the directions were clear and direct. United has a lot of potential to be one of my favourite airlines, but the devil is in the details and a lot of them missed the target.

Better WiFi. I cannot understand that in 2025, United is so behind on a technology that is now a necessity and still painfully unreliable, slow and keeps disconnecting.

Great service on board. Boarding a bit slow due to process. Food was pretty average.

Very small cramped plane for an international flight. Everything else was good, but it was maybe the smallest comfort-wise I've ever been on for longer than 3-4 hours and the trip was 7.5

Flight was delayed 3 hours. No food and drink vouchers was provided. They offered a mini pretzel bag and water .

Staff was rude. Didn’t give water for 2 hours. Worst service

Was on time until within 1 hour of flight-how does that happen? Staff very friendly.

I liked the choice of lemon ginger tea. I think stewardesses can be more considerate of older people needs.

We were given vouchers we couldn’t use with a 5.5 hour delay

Everything you need to know for your flight from Dulles Intl to Buffalo

Information on your arrival and departure airports

Washington Dulles Airport (IAD)
Buffalo (BUF)

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.