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Cheap Flights from Buffalo (BUF) to Seattle (SEA)

View AU$219 flight on Wed, 30 Sept 2026Opens in a new window

Popular airlines from Buffalo Niagara Intl. Airport (BUF) to Seattle-Tacoma International Airport (SEA)

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Cheap Flights from Buffalo (BUF) to Seattle (SEA)

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Fri, 21 Aug - Mon, 31 Aug
BUF
Buffalo
SEA
Seattle
AU$438 Return, found 1 day ago
AU$438
Return
found 1 day ago
Select American Airlines flight, departing Fri, 21 Aug from Buffalo to Seattle, returning Mon, 31 Aug, priced at AU$438 found 1 day ago
American Airlines
Fri, 21 Aug - Mon, 31 Aug
BUF
Buffalo
SEA
Seattle
AU$447 Return, found 1 day ago
AU$447
Return
found 1 day ago
Select American Airlines flight, departing Fri, 21 Aug from Buffalo to Seattle, returning Mon, 31 Aug, priced at AU$447 found 1 day ago
American Airlines
Fri, 21 Aug - Mon, 31 Aug
BUF
Buffalo
SEA
Seattle
AU$462 Return, found 1 day ago
AU$462
Return
found 1 day ago
Select American Airlines flight, departing Fri, 21 Aug from Buffalo to Seattle, returning Mon, 31 Aug, priced at AU$462 found 1 day ago
American Airlines
Fri, 21 Aug - Mon, 31 Aug
BUF
Buffalo
SEA
Seattle
AU$485 Return, found 1 day ago
AU$485
Return
found 1 day ago
Select American Airlines flight, departing Fri, 21 Aug from Buffalo to Seattle, returning Mon, 31 Aug, priced at AU$485 found 1 day ago
American Airlines
Fri, 21 Aug - Mon, 31 Aug
BUF
Buffalo
SEA
Seattle
AU$490 Return, found 1 day ago
AU$490
Return
found 1 day ago
Select American Airlines flight, departing Fri, 21 Aug from Buffalo to Seattle, returning Mon, 31 Aug, priced at AU$490 found 1 day ago
American Airlines
Fri, 21 Aug - Mon, 31 Aug
BUF
Buffalo
SEA
Seattle
AU$494 Return, found 1 day ago
AU$494
Return
found 1 day ago
Select American Airlines flight, departing Fri, 21 Aug from Buffalo to Seattle, returning Mon, 31 Aug, priced at AU$494 found 1 day ago
American Airlines
Fri, 21 Aug - Mon, 31 Aug
BUF
Buffalo
SEA
Seattle
AU$501 Return, found 1 day ago
AU$501
Return
found 1 day ago
Select American Airlines flight, departing Fri, 21 Aug from Buffalo to Seattle, returning Mon, 31 Aug, priced at AU$501 found 1 day ago
Delta
Fri, 21 Aug - Mon, 31 Aug
BUF
Buffalo
SEA
Seattle
AU$536 Return, found 1 day ago
AU$536
Return
found 1 day ago
Select Delta flight, departing Fri, 21 Aug from Buffalo to Seattle, returning Mon, 31 Aug, priced at AU$536 found 1 day ago
United
Fri, 21 Aug - Mon, 31 Aug
BUF
Buffalo
SEA
Seattle
AU$558 Return, found 1 day ago
AU$558
Return
found 1 day ago
Select United flight, departing Fri, 21 Aug from Buffalo to Seattle, returning Mon, 31 Aug, priced at AU$558 found 1 day ago
Alaska Airlines
Fri, 21 Aug - Mon, 31 Aug
BUF
Buffalo
SEA
Seattle
AU$1,021 Return, found 1 day ago
AU$1,021
Return
found 1 day ago
Select Alaska Airlines flight, departing Fri, 21 Aug from Buffalo to Seattle, returning Mon, 31 Aug, priced at AU$1,021 found 1 day ago

Find the cheapest month to fly from Buffalo (BUF) to Seattle (SEA)

February is typically the cheapest month to fly

From AU$394 - AU$996 per traveller.

Frequently asked questions

How much does a flight from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) cost?
You can find one-way and return flights from BUF to SEA with Expedia. 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 our cheapest fares first, and use the Price Tracking tool to receive alerts when BUF to SEA ticket fares go up or down.
What is the cheapest month to fly from Buffalo, NY (BUF) to Seattle, WA (SEA)?
The cheapest months to fly from Buffalo, NY (BUF) to Seattle, WA (SEA) are typically during off-peak season when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you are able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Buffalo, NY (BUF) to Seattle, WA (SEA)?
Enter BUF to SEA and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
Southwest Airlines is one of the cheapest airlines offering connecting return flights from Buffalo Niagara Intl. (BUF) to Seattle - Tacoma Intl. (SEA), with prices starting from around AU$445 for flights that can be booked for departure within the next year, typically with a layover in Baltimore Washington Intl. Thurgood Marshall (BWI). These prices are per adult, for economy/coach class. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.
How do I find cheap flights from Buffalo, NY (BUF) to Seattle, WA (SEA)?
To find a cheap flight from Buffalo, NY (BUF) to Seattle, WA (SEA), 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 time to fly from Buffalo, NY (BUF) to Seattle, WA (SEA)?
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 Seattle, WA (SEA-Seattle - Tacoma Intl.)?
There are approximately 66 connecting flights per day from Buffalo Niagara Intl. (BUF) to Seattle - Tacoma Intl. (SEA). Some common connection points include O'Hare Intl. (ORD), Baltimore Washington Intl. Thurgood Marshall (BWI), and Midway Intl. (MDW).
What is the earliest flight from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The earliest flight from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) typically departs around 5:00 AM. This service is operated by American Airlines. This is a seasonal service active in 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 Seattle, WA (SEA-Seattle - Tacoma Intl.)?
You'll find the most flights from Buffalo Niagara Intl. (BUF) to Seattle - Tacoma Intl. (SEA) on a Thursday, with around 44 flights available. This gives you a good selection of options for your travel plans. Major airlines on this route include American Airlines, United, and Delta. Flight schedules are quite consistent throughout the week, so you'll have plenty of options no matter which day you choose to fly.
What are the most popular departure times for flights from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The most popular departure times for flights from Buffalo Niagara Intl. (BUF) to Seattle - Tacoma Intl. (SEA) are in the morning, from 6am to 9am. Many major carriers, including American Airlines, United and Southwest Airlines, offer flights during this window. Many travellers prefer this because it allows for an early start to their journey, giving them more time to settle in upon arrival.
How long does it take to fly from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
There are no nonstop flights from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.). The distance between these two cities is approximately 3405 kilometres. If you're looking for the quickest option, flights with one stop typically take around 8 hours 18 minutes. Flights with two or more stops will take longer, usually around 15 hours 30 minutes. Keep in mind that actual flight times can vary due to factors like routing, weather, and wind patterns.
Can you fly business or first class from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
Yes, you can fly business class or first class between Buffalo, NY (BUF) and Seattle, WA (SEA).Airlines that offer business class service on this route include:
  • Delta

First class cabins are available on Alaska Airlines, Delta, United, and American Airlines.
How do I earn miles on a Buffalo, NY (BUF) to Seattle, WA (SEA) flight with Expedia?
It's easy to earn miles on a Buffalo, NY (BUF) to Seattle, WA (SEA) 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 Seattle, WA (SEA) from Buffalo, NY (BUF)?
If you're planning to travel to Seattle from Buffalo Niagara Intl. (BUF), you can fly directly into Seattle - Tacoma Intl. (SEA). Some flights may connect through major hubs like O'Hare Intl. (ORD), Baltimore Washington Intl. Thurgood Marshall (BWI), or Midway Intl. (MDW) before reaching Seattle. 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) to Seattle, WA (SEA) at the last minute?
Typically, booking a last minute flight from Buffalo, NY (BUF) to Seattle, WA (SEA) 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) to Seattle, WA (SEA) flight and hotel package?
Securing a Buffalo, NY (BUF) to Seattle, WA (SEA) 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 Seattle, WA (SEA)?
If you booked your Buffalo, NY (BUF) to Seattle, WA (SEA) 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
Seattle - Tacoma Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, United
Return price
AU$438
Distance
3385 km

Book with confidence

Your quick guide to flights from Buffalo to Seattle

Pick up great flights from Buffalo to Seattle

With Expedia, you have your pick of flights a day with 20 airlines covering flights from Buffalo to Seattle. Whether you’re on a business trip, a family holiday or a luxury break, just enter your travel dates, hit search then check out your choice of flights. Select from return, one way or multi-city flights, and use the advance search tool if you want a direct or refundable flight. You can narrow your search to show you just your preferred cabin class and airline, too. It’s all easy. You can book direct flights from Buffalo to Seattle that take around hours.

Find cheap flights from Buffalo to Seattle

From the great flight deals with prices currently ranging from AU$438 to AU$1,021, you can choose to see the cheapest flights first. Generally, you can book the cheapest flights from Buffalo to Seattle around 4 to 6 weeks in advance. If your travel dates are flexible, try to avoid weekends and peak seasons – when you are more likely to grab the lowest prices. Even last minute, there are some impressive deals. The cheapest time to fly to Seattle is normally in August.

Reasons to book your flight from Buffalo to Seattle with Expedia

Expedia makes it easy to find, book, and travel, with everything you need all in one place. When you enter your travel details, find fantastic deals just for you on flight tickets from Buffalo to Seattle across all the main airline carriers, so you can save time, dollars, and hassle finding the perfect flight. If you think your plans could change, choose refundable flights so any changes won’t cost you more. Book your flight to Seattle right now and, if you join Expedia Rewards, you earn points this time and every time you travel with Expedia.

Your quick guide to flights from Buffalo to Seattle

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*Available to Expedia members.