IAD - BUF

$72 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 10/16. 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

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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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

Fri, Sep 26 - Mon, Sep 29
Frontier Logo
7:14 pm - 6:14 pmIAD-BUF
23h 00m1 stop
Frontier Logo
12:17 pm - 12:15 amBUF-IAD
11h 58m1 stop
$231Frontier
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Thu, Dec 4 - Sun, Dec 7
Frontier Logo
6:00 am - 6:04 pmIAD-BUF
12h 04m1 stop
Frontier Logo
11:50 am - 12:19 amBUF-IAD
12h 29m2 stops
$232Frontier
Find Deal
Mon, Oct 13 - Mon, Oct 20
Frontier Logo
6:04 am - 11:19 amIAD-BUF
5h 15m1 stop
Frontier Logo
12:15 pm - 11:18 pmBUF-IAD
11h 03m1 stop
$236Frontier
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Thu, Oct 9 - Sat, Oct 18
United Airlines Logo
12:45 pm - 2:12 pmIAD-BUF
1h 27mnonstop
United Airlines Logo
7:45 pm - 9:07 pmBUF-IAD
1h 22mnonstop
$239United Airlines
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Sat, Nov 15 - Tue, Nov 18
United Airlines Logo
12:48 pm - 2:20 pmIAD-BUF
1h 32mnonstop
United Airlines Logo
2:55 pm - 4:21 pmBUF-IAD
1h 26mnonstop
$243United Airlines
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Thu, Oct 16 - Mon, Oct 20
Frontier Logo
1:07 pm - 7:34 pmIAD-BUF
6h 27m1 stop
Frontier Logo
9:13 pm - 7:46 pmBUF-IAD
22h 33m2 stops
$244Frontier
Find Deal
Sat, Oct 18 - Sun, Oct 19
Delta Logo
7:59 pm - 11:56 pmIAD-BUF
3h 57m1 stop
Delta Logo
7:00 am - 11:57 amBUF-IAD
4h 57m1 stop
$253Delta
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Sat, Nov 15 - Tue, Nov 18
American Airlines Logo
8:09 pm - 12:08 amIAD-BUF
3h 59m1 stop
American Airlines Logo
6:33 pm - 11:07 pmBUF-IAD
4h 34m1 stop
$257American Airlines
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Sat, Oct 4 - Tue, Oct 7
Delta Logo
6:16 pm - 10:36 pmIAD-BUF
4h 20m1 stop
Delta Logo
7:30 pm - 11:00 pmBUF-IAD
3h 30m1 stop
$259Delta
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Mon, Nov 3 - Tue, Nov 4
American Airlines Logo
7:59 am - 12:07 pmIAD-BUF
4h 08m1 stop
American Airlines Logo
6:33 pm - 11:07 pmBUF-IAD
4h 34m1 stop
$267American Airlines
Find Deal

Everything you should know

Top airlines
Frontier
Cheapest • from $231 (round-trip)
United Airlines
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
6 weeks
in advance
Our data shows that travelers who book at least 6 weeks in advance save around 26% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
January
Cheapest • 18% price drop
October
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest round-trip
$231
Overall average: $348
Frontier
Fri 9/26Mon 9/29
IAD - BUF • 1 stop
Cheapest non-stop
$239
Typical prices: $264-474
United Airlines
Thu 10/9Sat 10/18
IAD - BUF • Non-stop
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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 Tuesdays 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 October, where the average cost of round-trip tickets is $369 and $361 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 $332 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 6 weeks before departure, which saves you about 26% 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$72
Best time to beat the crowds with an average 18% drop in price.
Most popular time to fly with an average 16% 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 $72 for a one-way ticket and $231 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, Delta, JetBlue, and Air Canada 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 $212 or less one-way and $311 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 8929 reviews
8.1Crew
7.7Boarding
7.1Entertainment
7.3Comfort
6.6Food
Airline reviews

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

8.0 ExcellentTim, Aug 2025IAD - MUC
Read more United Airlines reviews

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

I fly UAL 7-8 times per year. This flight was not up to snuff because it boarded very late "due to unexpected delays in restocking the plane" and yet Flight Aware showed the plane had landed some 10 hours earlier--so I think they could have planned accordingly. The FA's were nice but harried. The video system had to be rebooted 3-4 times. The food service was rather abrupt; they forgot my row and when I asked for my meal, they brought it with some impatience. Overall, the flight was fine, but the little details made it feel somewhat mundane and hurried.

I didn’t get on plane. Passport being processed by consulate with visa application. Tried to cancel through underpricer after purchasing cacelling for any reason. No dice, they are thieves.

When I booked it on Kayak it aaid that I wasn't allowed hamd luggage. I called United Airlines and it took them 6 minutes to figure out if I was allowed free hand luggage. Surely something that simple they should be able to tell me instantly.

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)

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