IAD - BUF

$90 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 4/28. 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
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Everything you should know

Cheapest round-trip
$196
Overall average: $249
Frontier
Mon 4/27Mon 5/4
IAD - BUF • 1 stop
Cheapest non-stop
$219
Typical prices: $234-$343
United Airlines
Thu 4/9Tue 4/14
IAD - BUF • Non-stop
Top airlines
Cheapest • from $164 (round-trip)
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
You can fly direct with United Airlines. Average duration is 1h 28m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
Top layover airports
Cheapest • Avg $205 (round-trip)
Shortest trip • 3h 57m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 2 weeks in advance save around 30% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 17% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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!
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

Mon, Apr 27 - Mon, May 4
Frontier Logo
6:19 pm - 12:42 pm
IAD
-
BUF
18h 23m
1 stop
Frontier Logo
12:32 pm - 12:36 am
BUF
-
IAD
12h 04m
1 stop
$196Frontier
Mon, Apr 20 - Wed, Apr 22
Frontier Logo
6:00 am - 11:47 am
IAD
-
BUF
5h 47m
1 stop
Frontier Logo
1:56 pm - 12:36 am
BUF
-
IAD
10h 40m
1 stop
$197Frontier
Fri, May 8 - Tue, May 12
Frontier Logo
6:17 pm - 11:33 am
IAD
-
BUF
17h 16m
1 stop
Frontier Logo
11:36 am - 10:12 am
BUF
-
IAD
22h 36m
1 stop
$200Frontier
Wed, Apr 15 - Thu, Apr 16
Frontier Logo
7:00 am - 12:52 pm
IAD
-
BUF
5h 52m
1 stop
Frontier Logo
12:35 pm - 12:36 am
BUF
-
IAD
12h 01m
1 stop
$201Frontier
Mon, May 4 - Wed, May 6
Frontier Logo
6:00 am - 11:47 am
IAD
-
BUF
5h 47m
1 stop
Frontier Logo
2:49 pm - 11:09 pm
BUF
-
IAD
8h 20m
1 stop
$202Frontier
Thu, Apr 2 - Thu, Apr 9
Frontier Logo
6:00 am - 12:17 pm
IAD
-
BUF
6h 17m
1 stop
Frontier Logo
1:02 pm - 12:36 am
BUF
-
IAD
11h 34m
1 stop
$215Frontier
Thu, Apr 9 - Tue, Apr 14
United Airlines Logo
8:32 am - 10:00 am
IAD
-
BUF
1h 28mnonstop
United Airlines Logo
7:45 pm - 9:05 pm
BUF
-
IAD
1h 20mnonstop
$219United Airlines
Mon, Apr 20 - Mon, Apr 27
Frontier Logo
6:00 am - 11:47 am
IAD
-
BUF
5h 47m
1 stop
Frontier Logo
12:32 pm - 12:36 am
BUF
-
IAD
12h 04m
1 stop
$222Frontier
Wed, Apr 29 - Wed, May 6
Frontier Logo
6:20 am - 10:34 am
IAD
-
BUF
28h 14m
2 stops
Frontier Logo
2:49 pm - 11:09 pm
BUF
-
IAD
8h 20m
1 stop
$226Frontier
Thu, Apr 2 - Tue, Apr 7
Frontier Logo
6:00 am - 12:17 pm
IAD
-
BUF
6h 17m
1 stop
Frontier Logo
1:02 pm - 12:36 am
BUF
-
IAD
11h 34m
1 stop
$236Frontier
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 Mondays 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 April, where tickets cost $249 (return) on average. On the other hand, the most expensive months are October and July, where the average cost of round-trip tickets is $333 and $327 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 $323 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 2 weeks before departure, which saves you about 30% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 22 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$90
Best time to beat the crowds but there is an average 6% increase in price.
Most popular time to fly with an average 9% increase in price.
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 $90 for a one-way ticket and $164 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 $133 or less one-way and $254 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 9431 reviews
7.3Comfort
7.7Boarding
8.1Crew
7.1Entertainment
6.6Food
Airline reviews

The flight was delayed so we were dead tired, and after that the turbulence was horrible. I was very scared.

4.0 OkayOlga, Mar 2026
IAD - TYS
Read more United Airlines reviews

The flight was delayed so we were dead tired, and after that the turbulence was horrible. I was very scared.

Wifi took a while to kick in and we had a maintenance issue that took over 40 mins at the gate in Washington before pulling back

Very good. Because of the delays with my previous flight, I missed my connection, but I was able to book another flight through the United app easily.

Was happy we finally got upgraded in 1st class. The seat getting old. The cushiness need some improvement.

Ineffective communication with United resulted in lost baggage. Their Baggage Tracing counter at MUC was shut down from 11:00-14:15 on my arrival. Undertrained, underinformed staff had me Running all over MUC to find someone to help me to no avail. Staff was rude, unhelpful, and unable to effectively use the systems they did have operational. They refused to contact United in any way or provide any accommodation or other resources while I waited for my luggage. This has destroyed my downstream itinerary. If they had even the slightest visibility I may have been able to reschedule/plan, but again, their staff provided nothing, and did nothing more than their website, which doesn’t even work on a standard phone browser. Miserable failure at all levels that weren’t associated with the operation of the aircraft.

Sat next to a one year old. She crawled all over the place and made me laugh.

The Crew and the food was the worst I ever had in Business Class. First they told us there were no space for carry on. It was plenty of space over our 2 row seats, we had to ask to let us travel with it which was accepted. They were aware that we had to run for the connection due to the previous flight delay. Have us one hour waiting for more customers and not even offer a glass of water. Then started the service and they started to serve other passengers drinks in business and did not offer any drinks until they serve our pre ordered meal and I ask for something to drink. I had to wait until they finished to serve all passengers until Inget something. The crew was the worts I ever had for Business Class in my life.

Not great experience - we were super late boarding due to issues with aircraft. Then when we finally all got onboard and seated and they started taxiing out to the runway they just stopped then turned around and went back to the airport. Apparently the crew “ran out of time” to legally fly us. They mentioned that they were about 2 minutes away from taking off. I understand the rules and safety but kinda wonder why they would have bothered boarding us in the first place? Had to go all the way back and de plane and then wait in a HUGE line to get a hotel (this is somewhere around 2:30am) finally got to hotel by Uber (no shuttle after 20min so gave up) and they ended up putting us all back on the same aircraft at 10am next morning so got about 2.5 hours sleep. They did give us. $250 credit, but it was a São Paulo Brazil flight out of Dulles. The flight and everything was fine.

Starlink wifi on the Embraer E175 is an excellent experience. I was able to connect and work from IAD all the way to approach into BTV.

7 hours delayed due to operational issues on United’s end. Basically laziness.

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

Information on your arrival and departure airports