BUF - SEA

C$ 204 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 20/8. 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

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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Flights Deals

Cheap Flights 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.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Buffalo to Seattle

Fri, 24 Oct - Mon, 27 Oct
JetBlue Logo
3:55 p.m. - 10:10 p.m.BUF-SEA
9h 15m1 stop
JetBlue Logo
11:59 p.m. - 11:50 a.m.SEA-BUF
8h 51m1 stop
C$ 371JetBlue
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Mon, 18 Aug - Wed, 27 Aug
Delta Logo
3:58 p.m. - 10:07 p.m.BUF-SEA
9h 09m1 stop
Delta Logo
9:25 a.m. - 6:36 p.m.SEA-BUF
6h 11m1 stop
C$ 406Delta
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Wed, 27 Aug - Wed, 3 Sep
United Airlines Logo
5:54 p.m. - 10:20 p.m.BUF-SEA
7h 26m1 stop
United Airlines Logo
11:11 a.m. - 11:58 p.m.SEA-BUF
9h 47m2 stops
C$ 413United Airlines
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Sat, 20 Sep - Sat, 27 Sep
Southwest Logo
3:25 p.m. - 8:30 p.m.BUF-SEA
8h 05m1 stop
Southwest Logo
9:10 p.m. - 7:55 a.m.SEA-BUF
7h 45m1 stop
C$ 431Southwest
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Tue, 19 Aug - Wed, 27 Aug
Southwest Logo
12:50 p.m. - 7:55 p.m.BUF-SEA
10h 05m2 stops
Southwest Logo
9:10 p.m. - 7:55 a.m.SEA-BUF
7h 45m1 stop
C$ 447Southwest
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Mon, 18 Aug - Thu, 28 Aug
Delta Logo
7:41 p.m. - 11:54 p.m.BUF-SEA
7h 13m1 stop
Delta Logo
6:00 a.m. - 5:42 p.m.SEA-BUF
8h 42m1 stop
C$ 448Delta
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Fri, 4 Jul - Wed, 9 Jul
Sun Country Air Logo
11:29 a.m. - 10:47 p.m.BUF-SEA
14h 18m1 stop
Sun Country Air Logo
6:21 p.m. - 10:20 a.m.SEA-BUF
12h 59m1 stop
C$ 451Sun Country Air
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Tue, 7 Oct - Mon, 13 Oct
United Airlines Logo
10:55 a.m. - 6:02 p.m.BUF-SEA
10h 07m2 stops
United Airlines Logo
11:40 p.m. - 9:58 a.m.SEA-BUF
7h 18m1 stop
C$ 461United Airlines
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Thu, 10 Jul - Thu, 17 Jul
Sun Country Air Logo
11:17 a.m. - 7:59 a.m.BUF-SEA
23h 42m1 stop
Sun Country Air Logo
6:21 p.m. - 10:44 a.m.SEA-BUF
13h 23m1 stop
C$ 472Sun Country Air
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Fri, 8 Aug - Sun, 17 Aug
American Airlines Logo
6:29 a.m. - 12:35 p.m.BUF-SEA
9h 06m1 stop
American Airlines Logo
5:24 a.m. - 6:33 p.m.SEA-BUF
10h 09m1 stop
C$ 536American Airlines
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Useful Info

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$ 566 (return) on average. On the other hand, the most expensive months are December and May, where the average cost of round-trip tickets is C$ 788 and C$ 711 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 15 weeks before departure.


Good to know

Low seasonMarch
High seasonOctober
Cheapest flightC$ 204
Best time to beat the crowds (12% less expensive on average)
Most popular time to fly and prices are also 13% 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$ 149 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 oneworld 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$ 617 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$ 881 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.

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.

Top airlines flying 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
8.2Boarding
8.0Comfort
7.6Entertainment
7.1Food
8.6Crew
Airline reviews

Southwest is typically delayed, and it gets wearisome. It is no longer a discount airline and you get way less than you pay for when it comes to comfort and Ce.

6.0 GoodDavid, Jun 2025BWI - COS
Read more Southwest reviews

Southwest is typically delayed, and it gets wearisome. It is no longer a discount airline and you get way less than you pay for when it comes to comfort and Ce.

We sat on the plane on the tarmac for 4 hours.

I'm not a fan of Southwest's model. I don't like the herding style of boarding.

Flight crew and cabin crew were great. I had to rearrange flights because my original flight was 3hrs delayed for weather, the rub is the flight I moved to boarded on time then we sat at the gate for 2 hours because scheduling stole our first officer for another flight, TWICE. Then our actual FO was an hour delayed. To make it worse my original flight went from a 3 hour delay to departing 15min EARLY. Just poor scheduling operations all around.

Bring back peanuts Take our drink orders when were all seated, especially after you switch to assigned seating.

Staff was far less than helpful at all times. Departure and arrival times mean nothing to Southwest. Extremely disappointed, will never fly with them again, and I’ll be sure to share my experience with all.

It is southwest seat was ok. Not the most comfortable seat

I’ve always loved Southwest. No issues at all. I was flying standby and the gate agent was extremely friendly and helpful. Boarding was smooth and I was able to get a window seat in the emergency exit row. Crew was fantastic! They were very professional and accommodating. We had to divert from our destination due to weather but the flight crew kept everyone at ease and informed us of all pertinent information. Excellent flight

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

it was so bad. I tried to board my flight from vancouver to saskatoon. And to my surprise they did not board me cause the flight was changed and no email was send to me. and on my boarding pass which i got from seattle says different flight. I did not knew anyone from Vancouver, air canada crew was rude, i asked for today flight but they were rude and i had early morning dental appointment in saskatoon. I was so much in pain and my whole day is wasted today. and i suffered alot. They did provide me hotel but they did not provide me any food. I am really really disappointed first time had so bad experience with air canada. I may think twice to book it again. If i can get any reply or any composition that would be great. Thanks

It was fine, definitely older planes with no charging or anything. There’s no entertainment set up on board, but it is nice that they allow you to access the in flight entertainment from your phone without having to pay for the Wi-Fi and they do offer free texting.

Boarding was mayhem. Late boarding by 15 minutes because of lack of staff (missing 1 flight attendant. We had to wait for an arrival of another plane before we could board). Flight was a little rough, but cannot blame on airlines.

Impressed with the service despite turbulence because of the weather. Both flights arrived before their scheduled times.

Very comfortable (upgraded to business class). The audio on my screen didn’t work, but I managed to play the audio through my phone while watching the screen.

Great experience…left a bit behind schedule but made up fir that in the air and landed 10 minutes early 😁

I was supposed to be on business class at first class from Denver back to Miami due to weather changes. I missed my connection and it’s put on a flight to Fort Lauderdale. Instead of honoring my business class/1st class ticket, they put me in coach, but there were two first class seats open. I think it’s absolutely disgusting that I paid for first class $1300 ticket and they put me in economy and they had to open seats available and I have still not been refunded the difference. I ended up having to eat a snack box instead of the meal I was supposed to get and did not get home till 2 AM so I think that’s a little pathetic that I had to live off crackers for dinner And my poor dog ate some cheese and salami. Oh yes, apparently when they switched me to the new flight they forgot to mention I had a service dog

Excellent service despite turbulence during the flight. Flight attendants were remarkable!

I liked that the flight was nonstop from ORD to CIU for $200 round trip.

Smooth flight, especially take off and landing, and great crew on board. Really loved the stroopwaffles!

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

Information on your arrival and departure airports

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