BUF - SEA

C$ 138 Find Cheap Flights from Buffalo to Seattle

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 Seattle departing on 6/6. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Seattle

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Buffalo to Seattle, 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 Seattle, as well as popular online travel agencies
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Cheap Flight Deals from Buffalo to Seattle (BUF-SEA)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Buffalo to Seattle 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.

Recent round-trip flight deals from Buffalo to Seattle

KAYAK's recommended round-trip deals from the most popular airlines that fly from Buffalo to Seattle.
Discover the best prices for you by selecting your travel dates on KAYAK.
Choose your dates
JetBlue Logo
3:05 p.m. - 8:54 p.m.BUF-SEA
8h 49m1 stop
JetBlue Logo
9:14 p.m. - 10:39 a.m.SEA-BUF
10h 25m1 stop
C$ 374JetBlue
Find Deal
Wed, 11 Jun - Sun, 15 Jun
Delta Logo
6:30 a.m. - 10:28 a.m.BUF-SEA
6h 58m1 stop
Delta Logo
10:55 p.m. - 8:17 a.m.SEA-BUF
6h 22m1 stop
C$ 424Delta
Find Deal
Wed, 14 May - Tue, 27 May
JetBlue Logo
3:05 p.m. - 8:54 p.m.BUF-SEA
8h 49m1 stop
JetBlue Logo
11:20 p.m. - 11:44 a.m.SEA-BUF
9h 24m1 stop
C$ 425JetBlue
Find Deal
Fri, 6 Jun - Fri, 13 Jun
United Airlines Logo
7:55 p.m. - 12:59 a.m.BUF-SEA
8h 04m1 stop
United Airlines Logo
12:55 p.m. - 11:44 p.m.SEA-BUF
7h 49m1 stop
C$ 452United Airlines
Find Deal
Sat, 7 Jun - Wed, 11 Jun
Delta Logo
3:50 p.m. - 8:30 p.m.BUF-SEA
7h 40m1 stop
Delta Logo
6:05 a.m. - 6:17 p.m.SEA-BUF
9h 12m1 stop
C$ 474Delta
Find Deal
Tue, 16 Sep - Wed, 24 Sep
United Airlines Logo
7:45 p.m. - 12:56 a.m.BUF-SEA
8h 11m1 stop
United Airlines Logo
11:20 p.m. - 9:46 a.m.SEA-BUF
7h 26m1 stop
C$ 479United Airlines
Find Deal
Sat, 26 Jul - Sat, 2 Aug
Southwest Logo
12:50 p.m. - 8:55 p.m.BUF-SEA
11h 05m2 stops
Southwest Logo
9:10 p.m. - 8:05 a.m.SEA-BUF
7h 55m1 stop
C$ 481Southwest
Find Deal
Tue, 16 Sep - Tue, 23 Sep
Southwest Logo
12:50 p.m. - 7:55 p.m.BUF-SEA
10h 05m2 stops
Southwest Logo
11:00 p.m. - 12:00 p.m.SEA-BUF
10h 00m2 stops
C$ 488Southwest
Find Deal
Tue, 16 Sep - Tue, 23 Sep
Alaska Airlines Logo
3:00 p.m. - 10:00 p.m.BUF-SEA
10h 00m1 stop
Alaska Airlines Logo
8:08 a.m. - 11:22 p.m.SEA-BUF
12h 14m2 stops
C$ 594Alaska Airlines
Find Deal
Mon, 12 May - Tue, 20 May
Alaska Airlines Logo
1:39 p.m. - 8:00 p.m.BUF-SEA
9h 21m1 stop
Alaska Airlines Logo
8:10 a.m. - 11:42 p.m.SEA-BUF
12h 32m2 stops
C$ 624Alaska Airlines
Find Deal
Sat, 9 Aug - Tue, 19 Aug

KAYAK's insights & trends for Buffalo to Seattle flights

Get data-powered insights and trends into flights from Buffalo to Seattle 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 Seattle?

The average price of all round-trip flights from Buffalo to Seattle clicked on KAYAK for each day over the last 12 months.
Your flight ticket price will generally be cheaper if you fly to Seattle on a Friday and more expensive on a Thursday. On your return trip to Buffalo, you should consider flying back on a Friday, and avoid Wednesdays for better deals.

What is the cheapest month to fly from Buffalo to Seattle?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Buffalo to Seattle, 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 Seattle is October, where tickets cost C$ 541 (return) on average. On the other hand, the most expensive months are July and December, where the average cost of round-trip tickets is C$ 812 and C$ 796 respectively.

How far in advance should I book a flight from Buffalo to Seattle?

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 Seattle, 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 Seattle, you should book around 4 weeks before departure. For the absolute cheapest price, our data suggests you should book 24 weeks before departure.

Good to know

Low season

March

High season

October

Cheapest flight

C$ 138
Best time to beat the crowds (14% less expensive on average)
Most popular time to fly and prices are also 20% lower on average.
Flight from Buffalo to Seattle

When to book flights from Buffalo to Seattle

Are your dates flexible? Find out the best times to travel from Buffalo to Seattle 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 flights from Buffalo to Seattle

  • Are there any transportation options to get me from the Seattle Tacoma International Airport to downtown Seattle?

    A very convenient choice for transportation from the airport is to travel on the King County Metro bus route 124, that can make the trip in around 40 minutes. You can also ride on the Sound Transit 1-Line that will take you from the airport to the downtown area in around 30 minutes.

  • If I plan on renting a car when I arrive at Seattle Tacoma International Airport, where will I find the rental car companies?

    All the rental car companies that operate at this airport do so at the offsite rental car facility. To access this facility after a flight, travel aboard one of the complimentary shuttle buses that passengers can pick up on the lower drive outside of the baggage claim level. There are pick-up points at both ends of the terminal building.

  • If I am going to be using a rideshare service to get me from the Seattle Tacoma International Airport after a flight, where should I plan on meeting my ride?

    All rideshare service vehicles will make their pick-ups at this airport on floor number three of the parking garage. Passengers should look for their vehicles in Parking Rows G, H, I, and J in both the Purple and Orange sections of the garage.

  • Are there any hotels that have a convenient location close to the terminal buildings at the sea Seattle Tacoma International Airport?

    A very convenient choice that sits right along Pacific Highway South across from the terminal building at the airport is the Hilton Seattle Airport & Conference Center, and passengers can access this hotel by walking directly from the airport to the hotel via the sky bridge. Travelers who prefer not to walk will also find this airport offers a complimentary airport shuttle.

  • What is the cheapest flight from Buffalo to Seattle?

    In the last 3 days, the lowest price for a flight from Buffalo to Seattle was C$ 100 for a one-way ticket and C$ 271 for a round-trip.

  • Which airports will I be using when flying from Buffalo to Seattle?

    Buffalo airport is called Buffalo and the only airport in Seattle is Seattle/Tacoma Intl.

  • Which airlines offer Wi-Fi service onboard planes from Buffalo to Seattle?

    Only Delta offers inflight Wi-Fi service on the Buffalo to Seattle flight route.

  • Which aircraft models fly most regularly from Buffalo to Seattle?

    The Airbus A319 is the aircraft model that flies most regularly on the Buffalo to Seattle flight route.

  • Which airline alliances offer flights from Buffalo to Seattle?

    SkyTeam, Star Alliance, and oneworld are the airline alliances operating flights between Buffalo and Seattle, with SkyTeam being the most commonly used for this route.

  • Which is the best airline for flights from Buffalo to Seattle, Southwest or United Airlines?

    The two airlines most popular with KAYAK users for flights from Buffalo to Seattle are Southwest and United Airlines. With an average price for the route of C$ 623 and an overall rating of 8.0, Southwest is the most popular choice. United Airlines is also a great choice for the route, with an average price of C$ 890 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Buffalo to Seattle?

    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 Seattle.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Buffalo to Seattle?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seattle 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 Seattle?

    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 Seattle with an airline and back to Buffalo with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Buffalo to Seattle?

    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 Seattle from Buffalo up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

KAYAK’s top tips for finding a cheap flight from Buffalo to Seattle

  • A fantastic way to get to the Buffalo Niagara International Airport (BUF) from the center of Buffalo without having to drive in your own car is to take the Line 24 bus operated by NFTA can make this trip in around 30 minutes.
  • If you plan on driving your own car to Buffalo Niagara International Airport, this airport allows you to book your parking and reserve a spot online on their website. Passengers looking for the most economical choice for parking at this airport should consider the Economy Parking Lot, that has ample blue signage showing its location just offsite from the airport property.
  • If you plan on taking a pet or a service animal with you through the Buffalo Niagara International Airport, it is important to know that this airport offers a pet relief area just outside of the terminal building as well as an indoor pet relief area with a location between Gates 11 and 14.
  • If you are looking for a way to pass the time before a flight from the Buffalo Niagara International Airport, this airport offers a barbershop that you will find on the upper level of the airport just before the security checkpoint.
  • If you are a mother who is nursing and traveling through the Buffalo Niagara International Airport, this airport features a nursing room that has a location near gate 14. The nursing room features a comfortable leather chair, power outlets, a table, as well as a sink.
See more tips

Top 3 airlines serving from Buffalo to Seattle

 
See real verified KAYAK customer reviews for airlines flying from Buffalo to Seattle. 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 Seattle? 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.
8.0
SouthwestOverall score based on 4287 reviews
8.0Comfort
8.6Crew
7.1Food
8.2Boarding
7.6Entertainment
Airline reviews

The price of the tickets isn't matching the flight experience. No matter how long the flight is, you're only getting pretzels. The flight attendants looked unkept and over it.

6.0 GoodJennifer, Apr 2025FLL - RDU
Read more Southwest reviews

The price of the tickets isn't matching the flight experience. No matter how long the flight is, you're only getting pretzels. The flight attendants looked unkept and over it.

Plz don't take away free bags and free seating

The seats were a bit cramped and worn, but otherwise okay.

I would have liked to arrive on time - not 5 hours late!

After a 3 hour layover in Denver my flight was delayed over 5 hours! No explanation; no assistance; no offer to provide compensation; no one at Southwest was willing to offer any assistance. 8 hours in the Denver airport - ridiculous!

It was a perfect flight in all aspects! Both legs!

Only one drink pass through the cabin for a 4 hour flight. Quite rough and bumpy landing.

Boarding process, crew were good. But the seats were so uncomfortable that was all I could focus on. I literally had to sit forward so that all 3 of us could fit in row. I will try to avoid Southwest in the future for any flights over 60 minutes.

1.5 hour delay, poor service, no compassion from the crew. Terrible experience

Great flight, 47 passengers on a 180 seat plane. Stewardess was pleasant and cheerful.

Multiple delays and not straight answer from the United team

Stewardess spilled orange juice on my clothes/seat no help no apology just threw napkins at me to clean the mess up. Not Happy.

Smooth flight. Boarding was chaotic. Could not hear the gate agent over the intercom. People were lined up in the wrong lines. Groups one and two were told to board through line one and group 3 through line 2. All very confusing. Once in the air, the flight was smooth. There was no entertainment option on this aircraft, even though it was a larger aircraft.

The plane pushed back from the gate on time. However, it stopped on the ramp, and we waited for over 20 minutes before the aircraft pulled back to the gate. Apparently, something of importance had to be removed from the aircraft by the gate agent. I found this to be odd. The delay was not significant, but I felt that whatever was on the aircraft that had to be taken off, should’ve been done before we pushed back from the gate.

Electric plugs didn't work. Entertainment system wasn't working

The design of the light switch on the arm rest is ridiculous.

Smooth boarding process. Early departure, smooth flight, early arrival. The entertainment package has very good recent movie options. The flight crew were friendly and professional.

leg space better than expected. two washrooms for one plane isn't enough.

The gate attendant let me walk right by her with a bag too big for the overhead compartment

I just got back from a trip with 3 flights each way. The flights were good and we were happy with out experience. There was one steward on our first flight that was harsh and grump with passengers. It did not leave a good impression. All of the other flight crews were great on the other five flights.

There were five broken seats on the plane. The crew was very rude in telling people they had to get off the plane and get a flight the next day. No call for volunteers, but telling people they had to get off. One woman was flying with her elderly mother and daughter and was told she had to leave or all three had to leave. Fortunately, a volunteer offered to stay. The situation was handled poorly.

It was a code share with Alaska - would have been great if I actually made it on the plane, claimed I didn’t have a ticket or a seat even thought I was checked in.

Delays on all NY flights. There was no communication on why but they didn’t say it was weather. Other carriers were not delayed.

Extraordinary service in business class, and very good breakfast and snacks. A really lovely flight.

They cancelled our flight without warning OR a refund. Never doing business with American Airlines again! This is the second AA booked trip in a row that we've had challenges with.

I got bumped due to weight restrictions even tho there were empty seats on my flight. I got put on an other flight with a stopover. My flight that originally was going to take 5-6 hours ever up being 14+ hours and my luggage arrived to my destination without me because I was made to check in my luggage on my original flight when I was deemed ok to board only to be asked to deplane. Worst flight experience.

I was pleasantly surprised with an upgrade at boarding. I finally had a mostly gluten free food options and a very attentive attendant.

It was good. It’s been a long time since my wife and I fly any where and things have changed. Our trip was to see our new grandson. We fly economy and that was not good for my bad back. It was a quick flight but uncomfortable.

Staff at the gate were incredibly rude, hostile and threatening. Never fly American Airlines.

AA had a nationwide tech glitch today and after two connections snd hours of delay, I arrived 7 hours late to my destination

Everything you need to know for your flight from Buffalo to Seattle

Information on your arrival and departure airports

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