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CA $249 Cheap Flights from Buffalo (BUF) to Washington (IAD)

View CA $249 flight on Sat, Sep 5, 2026Opens in a new window

Popular airlines from Buffalo Niagara Intl. Airport (BUF) to Washington Dulles International Airport (IAD)

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Cheap flights from Buffalo (BUF) to Washington (IAD)

Prices were available within the past 7 days and start at CA $249 for one-way flights and CA $340 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Fri, Oct 30 - Mon, Nov 2
BUF
Buffalo
IAD
Washington
CA $340 Roundtrip, found 17 hours ago
CA $340
Roundtrip
found 17 hours ago
Select Delta flight, departing Fri, Oct 30 from Buffalo to Washington, returning Mon, Nov 2, priced at CA $340 found 17 hours ago
Delta
Mon, Aug 31 - Sun, Sep 6
BUF
Buffalo
IAD
Washington
CA $341 Roundtrip, found 6 hours ago
CA $341
Roundtrip
found 6 hours ago
Select Delta flight, departing Mon, Aug 31 from Buffalo to Washington, returning Sun, Sep 6, priced at CA $341 found 6 hours ago
Delta
Thu, Oct 15 - Thu, Nov 12
BUF
Buffalo
IAD
Washington
CA $350 Roundtrip, found 5 days ago
CA $350
Roundtrip
found 5 days ago
Select Delta flight, departing Thu, Oct 15 from Buffalo to Washington, returning Thu, Nov 12, priced at CA $350 found 5 days ago
United
Mon, Aug 31 - Sat, Sep 12
BUF
Buffalo
IAD
Washington
CA $352 Roundtrip, found 6 days ago
CA $352
Roundtrip
found 6 days ago
Select United flight, departing Mon, Aug 31 from Buffalo to Washington, returning Sat, Sep 12, priced at CA $352 found 6 days ago
Delta
Sun, Aug 23 - Sat, Aug 29
BUF
Buffalo
IAD
Washington
CA $353 Roundtrip, found 6 days ago
CA $353
Roundtrip
found 6 days ago
Select Delta flight, departing Sun, Aug 23 from Buffalo to Washington, returning Sat, Aug 29, priced at CA $353 found 6 days ago
Delta
Fri, Sep 11 - Thu, Sep 24
BUF
Buffalo
IAD
Washington
CA $361 Roundtrip, found 1 day ago
CA $361
Roundtrip
found 1 day ago
Select Delta flight, departing Fri, Sep 11 from Buffalo to Washington, returning Thu, Sep 24, priced at CA $361 found 1 day ago
American Airlines
Fri, Aug 28 - Sun, Aug 30
BUF
Buffalo
IAD
Washington
CA $376 Roundtrip, found 15 hours ago
CA $376
Roundtrip
found 15 hours ago
Select American Airlines flight, departing Fri, Aug 28 from Buffalo to Washington, returning Sun, Aug 30, priced at CA $376 found 15 hours ago
American Airlines
Thu, Sep 3 - Mon, Sep 7
BUF
Buffalo
IAD
Washington
CA $377 Roundtrip, found 6 hours ago
CA $377
Roundtrip
found 6 hours ago
Select American Airlines flight, departing Thu, Sep 3 from Buffalo to Washington, returning Mon, Sep 7, priced at CA $377 found 6 hours ago
Delta
Wed, Aug 19 - Wed, Aug 26
BUF
Buffalo
IAD
Washington
CA $380 Roundtrip, found 6 days ago
CA $380
Roundtrip
found 6 days ago
Select Delta flight, departing Wed, Aug 19 from Buffalo to Washington, returning Wed, Aug 26, priced at CA $380 found 6 days ago
United
Mon, Aug 31 - Fri, Sep 11
BUF
Buffalo
IAD
Washington
CA $384 Roundtrip, found 6 days ago
CA $384
Roundtrip
found 6 days ago
Select United flight, departing Mon, Aug 31 from Buffalo to Washington, returning Fri, Sep 11, priced at CA $384 found 6 days ago

Alternative airports near Washington

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Ronald Reagan Washington National DCA. Cheapest and Closest option available. Average driving time to city centre is 8 minutes. Flights from CA $398
DCA
Ronald Reagan Washington National
CheapestClosest
Average driving time to city centre8 min
Flights from CA $398

Find the cheapest month to fly from Buffalo (BUF) to Washington (IAD)

May is typically the cheapest month to fly

From CA $227 - CA $711 per traveller.

Frequently asked questions

How much does a flight from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Washington, DC (IAD-Washington Dulles Intl.) cost?
You can find cheap one-way flights from CA $249 and cheap return flights from CA $340 BUF to IAD with Expedia. One-way flights typically cost between CA$401 and CA$833, and return flights often range between CA$452 and CA$1442. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when BUF to IAD ticket fares go up or down.
What is the cheapest month to fly from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Washington, DC (IAD-Washington Dulles Intl.)?
May is typically the cheapest month to fly from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Washington, DC (IAD-Washington Dulles Intl.), with average return fares around CA$360. May often sees lower prices as it's before the peak summer travel season, when demand tends to increase. January and August are also good months to find deals on this route.
Which airlines fly direct from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Washington, DC (IAD-Washington Dulles Intl.)?
Only one airline offers direct flights from Buffalo Niagara Intl. (BUF) to Washington Dulles Intl. (IAD). United operates 39 direct flights from BUF to IAD every week.
How do I find cheap flights from Buffalo, NY (BUF) to Washington, DC (IAD)?
To find a cheap flight from Buffalo, NY (BUF) to Washington, DC (IAD), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best airline to fly with from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Washington, DC (IAD-Washington Dulles Intl.)?
The best airline to fly with from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Washington, DC (IAD-Washington Dulles Intl.) will differ from traveler to traveler. If you like to fly early, United offers early morning flights. If price is the most important factor, United typically offers the lowest fares. United offers the most daily flights from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Washington, DC (IAD-Washington Dulles Intl.), which is great if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.
What is the best time to fly from Buffalo, NY (BUF) to Washington, DC (IAD)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
How many flights per day from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Washington, DC (IAD-Washington Dulles Intl.)?
You'll find around 6 nonstop flights per day from Buffalo Niagara Intl. (BUF) to Washington Dulles Intl. (IAD). For even more choices, look at flights that include layovers, as there are approximately 28 connecting flights per day. Some common connection points include O'Hare Intl. (ORD), Hartsfield-Jackson Atlanta Intl. (ATL), and Detroit Metropolitan Wayne County (DTW).
What is the earliest flight from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Washington, DC (IAD-Washington Dulles Intl.)?
The earliest flight from Buffalo Niagara Intl. (BUF) to Washington Dulles Intl. (IAD) typically departs around 5:05 AM local time, operated by Southwest Airlines. This is a seasonal service, active in June, July, and August. An early departure like this can help you make the most of your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Washington, DC (IAD-Washington Dulles Intl.)?
You'll typically find the most flights from Buffalo Niagara Intl. (BUF) to Washington Dulles Intl. (IAD) on a Friday, with around 21 flights available. This gives you a good selection of options for your travel plans. Major airlines on this route include United, Delta, and American Airlines. Friday offers notably more flight options compared to other days of the week, making it a convenient day to travel.
What are the most popular departure times for flights from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Washington, DC (IAD-Washington Dulles Intl.)?
The most popular departure times for flights from Buffalo Niagara Intl. (BUF) to Washington Dulles Intl. (IAD) are in the early morning, from 6am to 9am. Many major carriers, including Delta, United and American Airlines, offer flights during this window. Many travellers prefer these times as it allows for an early start to their day in Washington, DC.
How long does it take to fly from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Washington, DC (IAD-Washington Dulles Intl.)?
A non-stop flight from Buffalo Niagara Intl. (BUF) to Washington Dulles Intl. (IAD) typically takes about 1 hour 18 minutes. This route covers a distance of approximately 455 kilometres. If you're looking at flights with one stop, the travel time usually increases to around 5 hours 30 minutes. Flights with two or more stops will take even longer, typically around 10 hours 18 minutes. Keep in mind that actual flight times can vary due to factors like wind patterns and air traffic, so it's always a good idea to allow for some extra time when planning your trip.
Can you fly business or first class from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Washington, DC (IAD-Washington Dulles Intl.)?
You can fly business class or first class between BUF and IAD. You can fly business class with Frontier Airlines and Delta.First class cabins are available on United, Delta, and American Airlines.
How do I earn miles on a Buffalo, NY (BUF-Buffalo Niagara Intl.) to Washington, DC (IAD-Washington Dulles Intl.) flight with Expedia?
It's easy to earn miles on a Buffalo, NY (BUF-Buffalo Niagara Intl.) to Washington, DC (IAD-Washington Dulles Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Washington, DC (IAD) from Buffalo, NY (BUF)?
If you're planning to travel to Washington from Buffalo Niagara Intl. (BUF), you can fly directly into Washington Dulles Intl. (IAD). Some flights may connect through major hubs like LaGuardia (LGA), Logan Intl. (BOS), or Liberty Intl. (EWR) before reaching Washington. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Washington, DC (IAD-Washington Dulles Intl.) at the last minute?
Typically, booking a last minute flight from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Washington, DC (IAD-Washington Dulles Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Buffalo, NY (BUF-Buffalo Niagara Intl.) to Washington, DC (IAD-Washington Dulles Intl.) flight and hotel package?
Securing a Buffalo, NY (BUF-Buffalo Niagara Intl.) to Washington, DC (IAD-Washington Dulles Intl.) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Buffalo, NY (BUF) to Washington, DC (IAD)?
If you booked your Buffalo, NY (BUF) to Washington, DC (IAD) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Buffalo Niagara Intl.
Destination airport
Washington Dulles Intl.
Airlines serving
American Airlines, Delta, United
Roundtrip price
CA $339
Distance
452 km
Average flight time
1 hour 19 mins

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Buffalo to Chantilly Flights

The easy way to book your flights from Buffalo to Washington 

With Expedia, it’s simple to find and book flights to Washington from Buffalo whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from 20 airlines that cover this route. There are nonstop flights to Washington Dulles Intl., too.  

Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from Buffalo to Washington today, tomorrow, or this week.  

 

Save dollars with cheap flights from Buffalo Niagara Intl., BUF to Washington Dulles Intl., IAD 

Sort your search results by price to find great deals on your flight from Buffalo to Washington—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to Washington from Buffalo currently is just CA $340 rising to CA $384.  

Here are more money-saving tips: 

  • Fly in October when flight prices are normally at their lowest 
  • Book about a month to 6 weeks before you travel for the best prices to Washington  
  • Avoid peak season and weekends when flights can cost more
  • Early morning and late-night flights are sometimes cheaper, so try varying your travel times 
  • One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free! 

 

Reasons to choose Expedia for your flight to Washington from Buffalo 

Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. So book your flight to Washington with Expedia today.

Buffalo to Chantilly Flights

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