BUF - IAD

$87 Find Cheap Flights from Buffalo to Washington Dulles Airport

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 1/29. 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 Washington, D.C. Dulles Intl 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
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$177
Overall average: $254
Frontier
Sun 1/11Sun 1/18
BUF - IAD • 1 stop
Cheapest non-stop
$179
Typical prices: $249-$332
United Airlines
Wed 1/14Mon 1/19
BUF - IAD • Non-stop
Top airlines
United Airlines
Cheapest • from $179 (round-trip)
United Airlines
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
2 weeks
in advance
Our data shows that travelers who book at least 2 weeks in advance save around 25% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
May
Cheapest • 7% price drop
March
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 Dulles Intl!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights 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 for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Buffalo to Dulles Intl

Sun, Jan 11 - Sun, Jan 18
Frontier Logo
1:15 pm - 3:27 pm
BUF
-
IAD
26h 12m1 stop
Frontier Logo
8:49 am - 8:03 pm
IAD
-
BUF
11h 14m1 stop
$177Frontier
Tue, Jan 13 - Tue, Jan 20
United Airlines Logo
2:49 pm - 4:19 pm
BUF
-
IAD
1h 30mnonstop
United Airlines Logo
12:40 pm - 2:14 pm
IAD
-
BUF
1h 34mnonstop
$179United Airlines
Tue, Jan 6 - Fri, Jan 23
United Airlines Logo
10:25 am - 11:55 am
BUF
-
IAD
1h 30mnonstop
United Airlines Logo
12:40 pm - 2:14 pm
IAD
-
BUF
1h 34mnonstop
$190United Airlines
Wed, Jan 7 - Sat, Jan 24
Delta Logo
5:44 pm - 11:06 pm
BUF
-
IAD
5h 22m1 stop
Delta Logo
5:27 pm - 10:57 pm
IAD
-
BUF
5h 30m1 stop
$199Delta
Fri, Jan 9 - Sun, Jan 18
Frontier Logo
1:15 pm - 11:28 am
BUF
-
IAD
22h 13m1 stop
Frontier Logo
7:27 pm - 10:49 am
IAD
-
BUF
15h 22m2 stops
$205Frontier
Fri, Jan 9 - Sat, Jan 24
Frontier Logo
1:15 pm - 11:28 am
BUF
-
IAD
22h 13m1 stop
Frontier Logo
11:39 am - 12:44 pm
IAD
-
BUF
25h 05m1 stop
$209Frontier
Tue, Jan 6 - Sat, Jan 24
Delta Logo
5:44 pm - 11:06 pm
BUF
-
IAD
5h 22m1 stop
Delta Logo
6:00 am - 11:45 am
IAD
-
BUF
5h 45m1 stop
$214Delta
Fri, Jan 9 - Fri, Jan 23
Multiple Airlines Logo
1:15 pm - 11:28 am
BUF
-
IAD
22h 13m1 stop
Multiple Airlines Logo
2:58 pm - 11:34 am
IAD
-
BUF
20h 36m2 stops
$218Multiple Airlines
Mon, Jan 5 - Fri, Jan 23
Frontier Logo
10:43 am - 9:03 pm
BUF
-
IAD
10h 20m1 stop
Frontier Logo
9:35 am - 6:36 pm
IAD
-
BUF
9h 01m1 stop
$219Frontier
Thu, Jan 8 - Wed, Jan 21
Delta Logo
7:45 pm - 11:43 am
BUF
-
IAD
15h 58m1 stop
Delta Logo
7:49 pm - 12:16 am
IAD
-
BUF
4h 27m1 stop
$221Delta
Booking Insights

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

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

When flying from Buffalo to Washington Dulles Airport, you should consider leaving on a Friday and avoid Saturdays if you are looking for the best rates. For your return to Buffalo, you’ll find the best rates on Saturdays and the most expensive ones on Sundays.

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 round-trip 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 May, where tickets cost $243 (return) on average. On the other hand, the most expensive months are October and March, where the average cost of round-trip tickets is $286 and $284 respectively.

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

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 $239 on average.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip 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 week.

To get a below average price on the flight from Buffalo to Washington, D.C. Dulles Intl Airport, you should book around 2 weeks before departure, which saves you about 25% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 15 weeks before departure.

Find deals

Good to know

Low seasonJuly
Cheapest flight$87
Best time to beat the crowds with an average 7% drop in price.
Most popular time to fly with an average 8% 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 $87 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?

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

  • 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.

  • 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.

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

  • Looking for a cheap flight? 25% of our users found flights on this route for $175 or less one-way and $274 or less round-trip.

Prefer to fly direct from Buffalo to Washington Dulles Airport?

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

Direct departures

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

Direct returns

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

Reviews of the top airline 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.
7.4
United AirlinesOverall score based on 9095 reviews
7.7Boarding
6.6Food
8.1Crew
7.3Comfort
7.1Entertainment
Airline reviews

The food is terrible. The same pasta or chicken with bad taste and presentation

6.0 GoodClaudia, Dec 2025
GUA - IAD
Read more United Airlines reviews

The food is terrible. The same pasta or chicken with bad taste and presentation

It was probably one of the worst flights I’ve been on. The restrooms were never cleaned or stocked. The food was very subpar, and i usually enjoy airline food, so I was disappointed. It was just all around a bad experience. The only saving grace was the flight attendants.

The only downside was my cell phone charger wouldn’t work in the charging port but everyone else’s would work in them all. My cell phone cable works fine in my hotel room in Frankfurt.

Great crew, excellent landing, good food. Over all great experience. Thank you!

One bag is incorrect and not acceptable for an international flight. The food was not just good. I won't fly with them again.

Not pleasant trip cross country when the entertainment and WiFi system not working. No entertainment for entirety of route. Staff was rather nonchalant in that they dismissed the problem due to age of plane. It would have been nice to know this up front so I could have come prepared to read or download movies before boarding Coincidentally or not, there was a similar issue with the entertainment system on my previous flight I took on my fist leg of the trip. There are no seat TVs, so you must rely on the app when it works. United can do better. Also, what use it it to pay for boarding group 2 when half of the passengers are in the same line as you?

Crew was dismissive. Snacks and refills not offered. Poor business class experience. Bed not comfortable compared to Emirates or BA.

Flight was delayed for 5 hours because crew didn’t have enough time to rest - this seems like it could have been avoided with better scheduling. Food was not good.

IAD with the archaic people movers is just a place to be avoided.

Overall, it was good. I was seating next to a wonderful lady and did not notice how time flew. Thanks

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

Information on your arrival and departure airports

Buffalo (BUF)
Dulles Intl (IAD)