BUF - SEA

C$ 213 Find Cheap Flights from Buffalo to Seattle – Compare and Save

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 23/9. 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, 0 bags

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Everything you should know

Cheapest round-trip
C$ 423
Typical prices: C$ 513-C$ 779
JetBlue
Tue 22/9Tue 22/9
BUF - SEA • 1 stop
Cheapest one-way flights
C$ 213
Typical prices: C$ 193-C$ 306
JetBlue
Wed 23/9
BUF - SEA • 1 stop
Top airlines
Cheapest • from C$ 423 (round-trip)
Best reviews • 8.0 score
Airline reviews
Airline reviews
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Airline reviews
Airline reviews
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Direct flights
Not available
There are currently no direct flights between Buffalo and Seattle. You’ll need at least 1 connection.
Insights
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Top layover airports
Cheapest • Avg C$ 539 (round-trip)
Shortest trip • 7h 09m (one-way)
Insights
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When to book
in advance
Our data shows that travellers who book at least 4 weeks in advance save around 38% compared to booking last minute.
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When to travel
Cheapest • 21% price drop
Most popular
Good to know
Good to know
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KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Seattle!
Flight Deals
Booking Insights
Flight 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

Tue, 22 Sep - Tue, 22 Sep
JetBlue Logo
12:19 p.m. - 8:44 p.m.
BUF
-
SEA
11h 25m
1 stop
JetBlue Logo
11:42 p.m. - 1:29 p.m.
SEA
-
BUF
10h 47m
1 stop
C$ 423JetBlue
Wed, 23 Sep - Wed, 23 Sep
JetBlue Logo
12:19 p.m. - 8:44 p.m.
BUF
-
SEA
11h 25m
1 stop
JetBlue Logo
11:42 p.m. - 1:29 p.m.
SEA
-
BUF
10h 47m
1 stop
C$ 423JetBlue
Sat, 12 Sep - Sat, 19 Sep
JetBlue Logo
11:35 a.m. - 8:44 p.m.
BUF
-
SEA
12h 09m
1 stop
JetBlue Logo
11:42 p.m. - 1:29 p.m.
SEA
-
BUF
10h 47m
1 stop
C$ 432JetBlue
Tue, 22 Sep - Wed, 23 Sep
JetBlue Logo
12:19 p.m. - 8:44 p.m.
BUF
-
SEA
11h 25m
1 stop
JetBlue Logo
11:42 p.m. - 1:29 p.m.
SEA
-
BUF
10h 47m
1 stop
C$ 432JetBlue
Wed, 11 Nov - Wed, 18 Nov
Delta Logo
7:00 a.m. - 2:33 p.m.
BUF
-
SEA
10h 33m
1 stop
Delta Logo
10:50 p.m. - 10:30 a.m.
SEA
-
BUF
8h 40m
1 stop
C$ 515Delta
Sat, 19 Sep - Mon, 21 Sep
Delta Logo
3:53 p.m. - 11:20 p.m.
BUF
-
SEA
10h 27m
1 stop
Delta Logo
10:40 p.m. - 10:26 a.m.
SEA
-
BUF
8h 46m
1 stop
C$ 515Delta
Wed, 23 Sep - Wed, 30 Sep
Delta Logo
3:58 p.m. - 9:15 p.m.
BUF
-
SEA
8h 17m
1 stop
Delta Logo
11:05 p.m. - 8:24 a.m.
SEA
-
BUF
6h 19m
1 stop
C$ 515Delta
Mon, 31 Aug - Thu, 10 Sep
Southwest Logo
9:40 a.m. - 5:35 p.m.
BUF
-
SEA
10h 55m
2 stops
Southwest Logo
11:05 p.m. - 10:45 a.m.
SEA
-
BUF
8h 40m
1 stop
C$ 522Southwest
Sat, 12 Sep - Sat, 19 Sep
Southwest Logo
5:15 p.m. - 9:30 p.m.
BUF
-
SEA
7h 15m
1 stop
Southwest Logo
11:00 p.m. - 12:15 p.m.
SEA
-
BUF
10h 15m
2 stops
C$ 522Southwest
Sat, 29 Aug - Tue, 1 Sep
Southwest Logo
5:15 p.m. - 9:30 p.m.
BUF
-
SEA
7h 15m
1 stop
Southwest Logo
11:05 p.m. - 12:30 p.m.
SEA
-
BUF
10h 25m
2 stops
C$ 522Southwest
Booking Insights

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.

How much is a round-trip flight from Buffalo to Seattle?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Buffalo to Seattle departing in September.

Flight prices are below average for this route right now.

Flights to Seattle from Buffalo usually cost between C$ 618 and C$ 962 in September.
The lowest price found in the past 5 days was C$ 423 on JetBlue (22 Sep–22 Sep).

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 February, where tickets cost C$ 538 (return) on average. On the other hand, the most expensive months are April and November, where the average cost of round-trip tickets is C$ 823 and C$ 815 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, which saves you about 38% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 25 weeks before departure.

Good to know

Low season

January

Cheapest flight

C$ 213
Best time to beat the crowds (3% less expensive on average)
Most popular time to fly (5% more expensive 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 5 days, the lowest price for a flight from Buffalo to Seattle was C$ 213 for a one-way ticket and C$ 423 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 aircraft models fly most regularly from Buffalo to Seattle?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Buffalo to Seattle?

    SkyTeam is the only airline alliance operating flights between Buffalo and Seattle.

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

    The two airlines most popular with KAYAK users for flights from Buffalo to Seattle are Southwest and Delta. With an average price for the route of C$ 780 and an overall rating of 8.0, Southwest is the most popular choice. Delta is also a great choice for the route, with an average price of C$ 539 and an overall rating of 7.8.

  • 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.

Reviews of the 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 4229 reviews
8.0Comfort
7.5Entertainment
8.1Boarding
8.6Crew
7.0Food
Airline reviews

Flight coming out of Buffalo was delayed, so we had to be rescheduled on another flight from Baltimore to Phoenix which means we had a long layover and got home 3.5 hours late. Shuttle to parking stopped at 10pm, so we had to pay for an Uber to the parking lot and got charged an extra day of parking since it was after midnight. Not the best experience. Long day!

2.0 MediocreDawn, Jun 2026
BUF - BWI
Read more Southwest reviews

Flight coming out of Buffalo was delayed, so we had to be rescheduled on another flight from Baltimore to Phoenix which means we had a long layover and got home 3.5 hours late. Shuttle to parking stopped at 10pm, so we had to pay for an Uber to the parking lot and got charged an extra day of parking since it was after midnight. Not the best experience. Long day!

Paid for premium extra leg room but the bin space for rows 1-3 had to go in rows 4-6 and 4-6 had to go to 7-9 because flight attendants have snacks and their luggage upfront. So we pay extra to have to fight thru traffic to get our bags. Only 2nd day of new seating so hope they fix this.

Airline travel is always too cramped to really be pleasant, but the cabin crew on this flight did a pretty good job of making up for it by putting on some music during boarding and sprinkling a few funny remarks into the safety briefing and announcements, and just generally being friendly and helpful. It definitely reminded me of why I prefer the in-flight experience on Southwest!

Delayed flight. Nicest crew member was a SW pilot flying seated next to me who kindly move to seat the final passenger. Flight extra delayed. My cup of refreshment of ginger ale was so packed with ice it was literally 2 sips.

Southwest is Southwest. No frills. If you're luck enough to get a happy crew (we did), then it makes for a nicer flight.

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

Board Milian spokesman with pre boarding , not after A group and without my spouse. Total BS, back to Alaska Airlibes I GO. oner 1.2M miles and 900 flights, and every time I fly SWA I regret it, thos will be last time, I only flew SWA but to time requirements fir a Funeral. NEVER AGAIN SWA

Good crew, funny movies, but you need phone ports in the plane and better snacks. :)

Had a long layover in rainy Chicago. The staff were attentive - my husband needed a wheelchair due to a recent fall and unsteady on his feet. They are wonderful for those of us who need a bit of extra care. My only complaint was discovered upon unpacking our suitcases at home. One (we had 3 carry on size and one just a bit larger) had water damage to everything inside. All the clothing (just happened to be the case with the clean clothes) were wet. I know it was raining, but why would items inside be wet? The paperwork packed in this case was damp with ink running. There were momentos from our 10-day European vacation that I was hoping to scrapbook - but alas, they will be scrapped - too damaged to keep. The boxes of French chocolate were damp on the outside. My expensive camera now has a cracked screen and a Gaudi tea-for-one was cracked - even though it was packed in clothing. I know it happened on this flight as I repacked all four suitcases before leaving New York in the morning. My first unhappy experience with luggage at Southwest.

The a/c wasn’t working very well and it was a very hot flight

Not really a “Delta” problem but worth mentioning: Boarding was a difficult process. TSA seemed understaffed and Pre-Check took longer than regular TSA. The supervisor was frazzled and yelled at travelers. Once through TSA, we had to put our carry-ons through another x-ray machine. Then queue up to board with both boarding pass and ID. Then, when we got to the stairs on the tarmac, we had to show our boarding pass again. Maybe this is just normal for Kona since the terminal is outdoors (but still a “secured” area).

Checkin was good, fllight ws good. Onlly complaint is lack of foot on 6 hour flight from Seattle to Boston. Snacks were flimsy - chips and cookies. could have offered something more substantial for such a long flight. I know you can buy food in airport but for the price you pay for a ticket, they should step up for the passengers.

Flight was delayed, we could have been notified earlier and in a consistent manner. App was not refreshing for another passenger to get the latest flight status. We could have stayed and waited at the hotel instead of waiting at the airport had we known the flight was going to delayed for more than 5 hours. The toilet is too tight, and needs to be cleaned more frequently (every hour). The entertainment screen froze, the touch screen not responding to touch. We were upgraded to comfort, it is more comfortable than regular economy seats.

It was fine. 55 minute flight. No snacks or beverage service offered. Boarding went smoothly and my walker was waiting for me on the jet way.

My flight was cencaled due with the bad weather on Sunday the crew was poorly mistaken my luggage supposed depart with my flight instead I didn’t have my luggage for almost 3 days the website is poorly respond to my complain until I have someone to do it my connection smooth their not even respon or email me even the have my luggage

8 hours late and the plane smelled like urine, that smell in the morning when your child wet the bed in the night.

Everything was good except wifi and a leaking drink chiller. The floor was all wet and my bag was soaked. Did not notice until debarking. Have not heard back from Delta. Even though this was leg one of an international flight in first class, they denied access to their Sky Club - very disappointing!

Prior to takeoff, the pilot told us there was a possibility of not being able to land and going to Portland. Well that happened, we took off and then did 8 loops around Spokane before the pilot told us we ran out of fuel and had to go to Portland. So for a 35 minute flight we have now been on the plane for 3 hours (boarded at 6:50 am and landed in Portland at 10:30). Then, we just sat in Portland's airport with no updates of when we can start heading back. All of a sudden, our pilots and crew just left, leaving us stranded in a different city and state. We continued to sit in Portland until we finally got a new crew assigned and boarded the plane (This was from 10:30-2). We then sat on the plane for an additional hour before take off because they had to count us multiple times. We finally landed in Spokane at 3:55 PM. So a flight that should have taken at max an hour took us 10 hours and we missed the majority of the recruiting event we went for.

Staff was great! Kind and cordial! Middle seat row 28 seat B has a hump in it. Trays were getting stuck when putting down and up. Good flight

This flight was no comparison to our prior flight. I'm thinking it all has to do with the age of the aircraft.

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

Information on your arrival and departure airports