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Cheap Flights from Buffalo (BUF) to Washington D.C. (IAD)

Compare Buffalo Niagara to Washington Dulles flight deals

Find the cheapest month or even day of the year to fly to Washington Dulles

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Flight deals from Buffalo Niagara to Washington Dulles

Looking for a cheap last-minute deal or the best return flight from Buffalo Niagara Airport to Washington Dulles Airport? If you want to travel next month, return fares start from $326. Find the lowest prices on one-way and return tickets right here.
Washington D.C..$273 per passenger.Departing Wed, 5 Aug, returning Wed, 12 Aug.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Buffalo Niagara on Wed, 5 Aug, arriving in Washington Dulles.Inbound indirect flight with Frontier Airlines, departs from Washington Dulles on Wed, 12 Aug, arriving in Buffalo Niagara.Price includes taxes and charges.From $273, select.
Washington D.C..$290 per passenger.Departing Sat, 19 Sep, returning Sat, 26 Sep.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Buffalo Niagara on Sat, 19 Sep, arriving in Washington Dulles.Inbound indirect flight with Frontier Airlines, departs from Washington Dulles on Sat, 26 Sep, arriving in Buffalo Niagara.Price includes taxes and charges.From $290, select.
Washington D.C..$299 per passenger.Departing Tue, 20 Oct, returning Wed, 21 Oct.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Buffalo Niagara on Tue, 20 Oct, arriving in Washington Dulles.Inbound indirect flight with Frontier Airlines, departs from Washington Dulles on Wed, 21 Oct, arriving in Buffalo Niagara.Price includes taxes and charges.From $299, select.
Washington D.C..$324 per passenger.Departing Fri, 31 Jul, returning Wed, 5 Aug.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Buffalo Niagara on Fri, 31 Jul, arriving in Washington Dulles.Inbound indirect flight with Frontier Airlines, departs from Washington Dulles on Wed, 5 Aug, arriving in Buffalo Niagara.Price includes taxes and charges.From $324, select.
Washington D.C..$326 per passenger.Departing Wed, 12 Aug, returning Tue, 25 Aug.Return flight with United.Outbound direct flight with United departs from Buffalo Niagara on Wed, 12 Aug, arriving in Washington Dulles.Inbound direct flight with United departs from Washington Dulles on Tue, 25 Aug, arriving in Buffalo Niagara.Price includes taxes and charges.From $326, select.
Washington D.C..$326 per passenger.Departing Sat, 25 Jul, returning Wed, 29 Jul.Return flight with United.Outbound direct flight with United departs from Buffalo Niagara on Sat, 25 Jul, arriving in Washington Dulles.Inbound direct flight with United departs from Washington Dulles on Wed, 29 Jul, arriving in Buffalo Niagara.Price includes taxes and charges.From $326, select.
Washington D.C..$326 per passenger.Departing Tue, 21 Jul, returning Tue, 4 Aug.Return flight with United.Outbound direct flight with United departs from Buffalo Niagara on Tue, 21 Jul, arriving in Washington Dulles.Inbound direct flight with United departs from Washington Dulles on Tue, 4 Aug, arriving in Buffalo Niagara.Price includes taxes and charges.From $326, select.
Washington D.C..$341 per passenger.Departing Mon, 23 Nov, returning Mon, 7 Dec.Return flight with United.Outbound direct flight with United departs from Buffalo Niagara on Mon, 23 Nov, arriving in Washington Dulles.Inbound direct flight with United departs from Washington Dulles on Mon, 7 Dec, arriving in Buffalo Niagara.Price includes taxes and charges.From $341, select.
Washington D.C..$341 per passenger.Departing Wed, 14 Oct, returning Wed, 21 Oct.Return flight with United.Outbound direct flight with United departs from Buffalo Niagara on Wed, 14 Oct, arriving in Washington Dulles.Inbound direct flight with United departs from Washington Dulles on Wed, 21 Oct, arriving in Buffalo Niagara.Price includes taxes and charges.From $341, select.
Washington D.C..$341 per passenger.Departing Wed, 2 Dec, returning Wed, 16 Dec.Return flight with United.Outbound direct flight with United departs from Buffalo Niagara on Wed, 2 Dec, arriving in Washington Dulles.Inbound direct flight with United departs from Washington Dulles on Wed, 16 Dec, arriving in Buffalo Niagara.Price includes taxes and charges.From $341, select.
Washington D.C..$344 per passenger.Departing Sat, 9 Jan, returning Sat, 23 Jan.Return flight with United.Outbound direct flight with United departs from Buffalo Niagara on Sat, 9 Jan, arriving in Washington Dulles.Inbound direct flight with United departs from Washington Dulles on Sat, 23 Jan, arriving in Buffalo Niagara.Price includes taxes and charges.From $344, select.
Washington D.C..$357 per passenger.Departing Fri, 6 Nov, returning Sat, 7 Nov.Return flight with United.Outbound direct flight with United departs from Buffalo Niagara on Fri, 6 Nov, arriving in Washington Dulles.Inbound direct flight with United departs from Washington Dulles on Sat, 7 Nov, arriving in Buffalo Niagara.Price includes taxes and charges.From $357, select.
Washington D.C..$368 per passenger.Departing Thu, 24 Sep, returning Thu, 1 Oct.Return flight with Delta.Outbound indirect flight with Delta, departs from Buffalo Niagara on Thu, 24 Sep, arriving in Washington Dulles.Inbound indirect flight with Delta, departs from Washington Dulles on Thu, 1 Oct, arriving in Buffalo Niagara.Price includes taxes and charges.From $368, select.
Washington D.C..$402 per passenger.Departing Fri, 18 Dec, returning Fri, 1 Jan.Return flight with United.Outbound direct flight with United departs from Buffalo Niagara on Fri, 18 Dec, arriving in Washington Dulles.Inbound direct flight with United departs from Washington Dulles on Fri, 1 Jan, arriving in Buffalo Niagara.Price includes taxes and charges.From $402, select.
Washington D.C..$438 per passenger.Departing Wed, 9 Sep, returning Sun, 13 Sep.Return flight with United.Outbound direct flight with United departs from Buffalo Niagara on Wed, 9 Sep, arriving in Washington Dulles.Inbound direct flight with United departs from Washington Dulles on Sun, 13 Sep, arriving in Buffalo Niagara.Price includes taxes and charges.From $438, select.
Washington D.C..$456 per passenger.Departing Thu, 3 Sep, returning Thu, 8 Oct.Return flight with United.Outbound direct flight with United departs from Buffalo Niagara on Thu, 3 Sep, arriving in Washington Dulles.Inbound direct flight with United departs from Washington Dulles on Thu, 8 Oct, arriving in Buffalo Niagara.Price includes taxes and charges.From $456, select.

Find the cheapest month to fly from Buffalo Niagara to Washington Dulles

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Buffalo Niagara to Washington Dulles flights are currently cheapest in August.
Jun
from $592
Jul
from $326
Aug
from $272
Sep
from $289
Oct
from $298
Nov
from $356
Dec
from $340
Jan
from $343
Feb
from $663
Mar
Find prices
Apr
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May
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Direct flights from Buffalo Niagara to Washington Dulles

Buffalo Niagara to Washington Dulles: Alternative routes

Compare routes from Buffalo Niagara to Washington D.C. below. You may find an airport to fly into that's cheaper, faster, or easier than Washington Dulles.

Washington Ronald Reagan

5km from central Washington D.C.
Closest
from $334
Search flights

Camp Springs Andrews AFB

17km from central Washington D.C.
Search flights

Washington Dulles

37km from central Washington D.C.
from $273
Search flights

Baltimore Washington International

44km from central Washington D.C.
Cheapest
from $239
Search flights

Manassas

47km from central Washington D.C.
Search flights

Buffalo to Washington D.C.: Flight information

The things to know before you go.
Cheapest flight found$273
Cheapest month to flyAugust
Average flight time1 hr, 20 mins
Most popular airlineUnited
Average flights per week108

Finding cheap flights from Buffalo Niagara to Washington Dulles: Frequently asked questions

The best price we found for a return flight from Buffalo Niagara to Washington Dulles is $273. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
1 hour and 20 minutes is the average flight time from Buffalo Niagara to Washington Dulles.
United, GoJet Airlines and CommutAir fly direct from Buffalo Niagara to Washington Dulles.
As of June 2026, there are 108 flights per week flying from Buffalo Niagara to Washington Dulles.
The cheapest month to fly from Buffalo Niagara to Washington Dulles is usually August.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Buffalo Niagara Airport to Washington Dulles Airport on Wednesday, 5 August 2026.
Yes – the average flight time is 1 hour and 20 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Washington Dulles but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Washington D.C. is around 40 days in advance, so don’t leave your flight to the last minute.

Currently, Frontier Airlines and United offer the cheapest flight tickets to Washington Dulles.

Flying from Buffalo Niagara Airport (BUF) to Washington Dulles Airport (IAD): what you need to know

  • Around 1 hour 20 minutes is how long you can expect to be travelling on a direct flight from Buffalo Niagara Airport to Washington Dulles Airport.

  • Washington DC's timezone is UTC-5, which is the same as Buffalo.

  • Every week, there are 23 Buffalo Niagara Airport to Washington Dulles Airport flights. If you'd like to take off early, select the 06:00 United Airlines flight. If you're eager to make the most of your day before flying, the latest flight is at 19:55 with United Airlines.

  • Your BUF to IAD flight won't wait if you're late, so get to the airport with time to spare. Arrive up to one hour in advance for domestic flights and two hours ahead for international travel.

  • During popular months such as August, it's a good idea to get to the airport well in advance. Plan to arrive two hours before a domestic departure and four hours ahead of an international flight whenever you're travelling during peak periods in general.

  • United is your gateway to exploring Washington DC (and maybe even some other exciting corners of the United States!). Check out the direct flights from Buffalo Niagara Airport to Washington Dulles Airport offered by this popular airline.

  • The majority of travellers choose to fly with United on this route.

  • With 76.92% of services arriving as scheduled, United is the most punctual carrier offering BUF to IAD flights.

  • We make it a piece of cake to book a flight with a stopover. To see all your options for tickets from Buffalo Niagara Airport to Washington Dulles Airport, uncheck 'Direct flights only.' Then, choose a flight with a stop long enough to explore your chosen city. Popular stopovers between BUF and IAD include:

    • Charlotte Douglas Airport

    • New York Newark Airport

    • Detroit Wayne County Airport

How to find the cheapest flights from Buffalo Niagara Airport (BUF) to Washington Dulles Airport (IAD)

  • At the moment, $133 is the cheapest price we've found for a one-way Buffalo Niagara Airport to Washington Dulles Airport flight. The best price for a return plane ticket is $272. Keep in mind that fares can change due to demand at the time of booking.

  • To score cheap tickets from BUF to IAD, reserve your trip five months before your departure.

  • The cheapest month for flights from Buffalo Niagara Airport to Washington Dulles Airport is October. Use the 'Whole month' tool to find the lowest prices if you have a flexible schedule.

  • Stay on top of deals for cheap flights from BUF to IAD by creating a Price Alert. You'll receive an email or push notification on the app when a lower fare becomes available.

  • Discover the perfect flight for you by using the filters. To see the 'Fastest,' 'Best' or 'Cheapest' flights from Buffalo Niagara Airport to Washington Dulles Airport, use the 'Sort by' tool. You can also filter by departure and arrival times, airline, and journey duration.

Handy information about Buffalo Niagara Airport (BUF)

  • The address for BUF is Genesee Street.

  • 74% of flights that take off from Buffalo Niagara Airport arrive at their destination on time.

  • To get to Buffalo Niagara Airport from central Buffalo, it takes around 20 minutes by car. Of course, this depends on traffic conditions. It's approximately 16 kilometres from the airport to the city centre.

  • You can expect a journey time of roughly 40 minutes when using public transport.

  • Looking for a convenient hotel near BUF? If you're boarding an early flight from Buffalo Niagara Airport to Washington Dulles Airport, these accommodation options will have you moments from check-in:

Arriving at Washington Dulles Airport (IAD)

Getting from Washington Dulles Airport (IAD) to central Washington DC

  • You'll find IAD at 1 Saarinen Circle.

  • From Washington Dulles Airport, Washington DC is approximately 40 kilometres away. It takes around 45 minutes to reach the centre driving.

  • Travelling to the centre on public transport will take you roughly 1 hour 10 minutes.

When to fly to Washington Dulles Airport (IAD)

  • The quietest month for a flight from Buffalo Niagara Airport to Washington Dulles Airport is February, while July is the most popular. Pick the ideal time to visit Washington DC based on whether you prefer a bustling atmosphere or a more laid-back vibe.

  • Before locking in your flight from Buffalo Niagara Airport to Washington Dulles Airport, think about the type of weather you enjoy. July is the warmest month in Washington DC, with the temperature ranging from 19ºC (66ºF) to 33ºC (91ºF).

  • If you'd rather travel in cooler conditions, look for a cheap ticket from BUF to IAD in January. Average temperatures are between -6ºC (21ºF) and 10ºC (50ºF) then.

Explore more of the United States

  • You've seen Washington DC, now it's time to explore other parts of the United States. Travel about 322 kilometres north-east to New York to check off its leading sights. From Central Park to Statue of Liberty and Metropolitan Museum of Art, there's plenty to keep you busy.

  • If you're looking to explore another well-known destination in the United States, consider Philadelphia, roughly 193 kilometres north-east of Washington DC. Independence Hall, Liberty Bell and Philadelphia Museum of Art are among its highlights.

Plan the rest of your trip from Buffalo to Washington D.C.

Prices shown on this page are estimated lowest prices only. Found in the last 12 days.