BUF - SEA

C$ 246 Find Cheap Flights from Buffalo to Seattle – Compare and Save

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Everything you should know

Cheapest round-trip
C$ 433
Typical prices: C$ 586-C$ 845
Southwest
Sat 17/2Mon 19/2
BUF - SEA • 1 stop
Cheapest one-way flights
C$ 246
Typical prices: C$ 322-C$ 530
Frontier
Mon 22/10
BUF - SEA • 2 stops
Direct flights
Not available
There are currently no direct flights between Buffalo and Seattle. You'll need to take a connecting flight to reach the destination.
Insights
Insights
When to book
20 weeks
in advance
Our data shows that travellers who book at least 20 weeks in advance save around 46% compared to booking last minute.
Insights
Insights
When to travel
February
Cheapest • 25% price drop
July
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Denver Intl (DEN)
Cheapest • Avg C$ 447 (round-trip)
Detroit Metropolitan Wayne County (DTW)
Shortest trip • 7h 20m (one-way)
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Insights
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We hope you enjoy your trip to Seattle!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Buffalo to Seattle (BUF-SEA)

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

Recent round-trip flight deals from Buffalo to Seattle

Wed, 17 Feb - Fri, 19 Feb
Southwest Logo
7:45 a.m. - 1:00 p.m.BUF  Buffalo-SEA Seattle/Tacoma Intl
8h 15m1 stop Chicago Midway
Southwest Logo
12:15 a.m. - 10:20 a.m.SEA  Seattle/Tacoma Intl-BUF Buffalo
7h 05m1 stop Chicago Midway
C$ 433Southwest
Wed, 17 Feb - Fri, 19 Feb
Southwest Logo
8:10 a.m. - 5:05 p.m.BUF  Buffalo-SEA Seattle/Tacoma Intl
11h 55m2 stops Baltimore/Washington Denver Intl
Southwest Logo
12:15 a.m. - 10:20 a.m.SEA  Seattle/Tacoma Intl-BUF Buffalo
7h 05m1 stop Chicago Midway
C$ 441Southwest
Sat, 3 Oct - Tue, 6 Oct
Delta Logo
11:06 a.m. - 6:30 p.m.BUF  Buffalo-SEA Seattle/Tacoma Intl
10h 24m1 stop New York John F Kennedy Intl
Delta Logo
11:50 a.m. - 11:59 p.m.SEA  Seattle/Tacoma Intl-BUF Buffalo
9h 09m1 stop New York John F Kennedy Intl
C$ 523Delta
Sat, 13 Feb - Sat, 20 Feb
Delta Logo
11:20 a.m. - 7:23 p.m.BUF  Buffalo-SEA Seattle/Tacoma Intl
11h 03m1 stop New York John F Kennedy Intl
Delta Logo
6:00 a.m. - 5:06 p.m.SEA  Seattle/Tacoma Intl-BUF Buffalo
8h 06m1 stop Detroit Metropolitan Wayne County
C$ 523Delta
Sat, 10 Oct - Mon, 19 Oct
American Airlines Logo
5:50 p.m. - 12:36 a.m.BUF  Buffalo-SEA Seattle/Tacoma Intl
9h 46m1 stop Chicago O'Hare Intl
American Airlines Logo
10:48 p.m. - 10:18 a.m.SEA  Seattle/Tacoma Intl-BUF Buffalo
8h 30m1 stop Philadelphia
C$ 523American Airlines
Wed, 7 Oct - Mon, 12 Oct
United Airlines Logo
1:48 p.m. - 6:52 p.m.BUF  Buffalo-SEA Seattle/Tacoma Intl
8h 04m1 stop Chicago O'Hare Intl
United Airlines Logo
11:13 p.m. - 9:29 a.m.SEA  Seattle/Tacoma Intl-BUF Buffalo
7h 16m1 stop Chicago O'Hare Intl
C$ 523United Airlines
Thu, 1 Oct - Wed, 7 Oct
Delta Logo
9:04 a.m. - 2:49 p.m.BUF  Buffalo-SEA Seattle/Tacoma Intl
8h 45m1 stop Detroit Metropolitan Wayne County
Delta Logo
3:00 p.m. - 11:59 p.m.SEA  Seattle/Tacoma Intl-BUF Buffalo
5h 59m1 stop Detroit Metropolitan Wayne County
C$ 523Delta
Sat, 30 Jan - Tue, 2 Feb
United Airlines Logo
10:20 a.m. - 6:09 p.m.BUF  Buffalo-SEA Seattle/Tacoma Intl
10h 49m2 stops Chicago O'Hare Intl Denver Intl
United Airlines Logo
10:54 a.m. - 8:52 p.m.SEA  Seattle/Tacoma Intl-BUF Buffalo
6h 58m1 stop Chicago O'Hare Intl
C$ 530United Airlines
Thu, 26 Nov - Mon, 30 Nov
Southwest Logo
8:00 a.m. - 5:30 p.m.BUF  Buffalo-SEA Seattle/Tacoma Intl
12h 30m2 stops Chicago Midway Phoenix Sky Harbor Intl
Southwest Logo
12:15 a.m. - 10:40 a.m.SEA  Seattle/Tacoma Intl-BUF Buffalo
7h 25m1 stop Chicago Midway
C$ 530Southwest
Thu, 5 Nov - Mon, 9 Nov
Southwest Logo
7:10 p.m. - 12:40 a.m.BUF  Buffalo-SEA Seattle/Tacoma Intl
8h 30m1 stop Chicago Midway
Southwest Logo
6:35 p.m. - 8:25 a.m.SEA  Seattle/Tacoma Intl-BUF Buffalo
10h 50m2 stops San Diego Baltimore/Washington
C$ 530Southwest
Booking Insights

Price, demand, and travel trends for Buffalo to Seattle flights

Use KAYAK data on prices, travel dates, airlines, and seasonal trends to compare options and book flights from Buffalo to Seattle with more confidence.

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

Round-trip flights from Buffalo to Seattle start at C$ 433. Prices are below average for this route right now, with typical round-trip fares ranging from C$ 586 to C$ 845. The lowest price found in the past 5 days was C$ 433 on Southwest.

What's the cheapest day of the week to fly from Buffalo to Seattle?

Monday is the cheapest day of the week to fly from Buffalo to Seattle and is 14% cheaper than the average day. Saturday is the most expensive day with flight prices 10% higher than average. Based on deals found by KAYAK users in the last 12 months.

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

  • February is the cheapest month to fly from Buffalo to Seattle at C$ 533 round-trip.
  • April (C$ 814) and June (C$ 778) are the most expensive months.
  • The price difference between flying in the cheapest and most expensive months is 52% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are prices from Buffalo to Seattle the cheapest?

Flights from Buffalo to Seattle are cheapest 20 weeks before departure. Booking in this window typically costs about 46% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

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Key details for Buffalo to Seattle flights

Low season

December

Cheapest flight

C$ 246
Best time to beat the crowds (15% less expensive on average)
Most popular time to fly (8% more expensive on average)
Flights 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

Your Buffalo to Seattle flight questions, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines, and booking questions.

  • 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.

  • Which airports can I use when flying from Buffalo to Seattle?

    Flights from Buffalo to Seattle usually depart from Buffalo (BUF) and arrive at Seattle/Tacoma Intl (SEA).

  • Which cabin classes can I book on flights from Buffalo to Seattle?

    Only Economy Class is available on flights from Buffalo to Seattle.

  • Which airports do connecting flights from Buffalo to Seattle pass through?

    One-stop flights from Buffalo to Seattle most commonly connect through:

    • Chicago O'Hare Intl (ORD) – 57% of one-stop connections
    • Chicago Midway (MDW) – 15% of one-stop connections
    • Detroit Metropolitan Wayne County (DTW) – 12% of one-stop connections
    • Denver Intl (DEN) – 5% of one-stop connections

    Chicago O'Hare Intl (ORD) handles the largest share of one-stop connections on this route.

  • Can I save money by using flexible dates for flights from Buffalo to Seattle?

    Yes. Being flexible with your travel dates can save you up to 22% on the Buffalo to Seattle route. Monday is the cheapest departure day at C$ 614 round-trip on average, while Saturday is the most expensive at C$ 785, a difference of C$ 171. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • Which popular places can I visit in Seattle?

    Some of the most popular sights in Seattle are Lumen Field, T-Mobile Park, and Seattle Waterfront. These are among the most viewed places in Seattle on KAYAK.

  • How expensive are last-minute Buffalo to Seattle flights?

    Last-minute fares on this route – booked within 2 weeks of departure – run 46% above the route average of C$ 711. Book 20 weeks before departure for the lowest fares.

  • How long does a flight from Buffalo to Seattle take?

    A direct flight from Buffalo to Seattle takes 0h 00m, covering 5,477 km.

  • Do I need a passport to fly from Buffalo to Seattle?

    No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID, or another TSA-accepted form of identification.

  • How are flight prices from Buffalo to Seattle looking right now?

    One-way fares from Buffalo to Seattle are currently lower than usual. Average one-way flight prices are about C$ 301, which is 28% below the typical average for this route.

  • How much time can I save by choosing a different layover airport when travelling from Buffalo to Seattle?

    Flying via Detroit Metropolitan Wayne County (DTW) gives the shortest average 1-stop total travel time at 7h 20m, compared with 7h 37m via Chicago Midway (MDW) and 7h 45m via Chicago O'Hare Intl (ORD).

  • What is the time difference between Buffalo and Seattle?

    Seattle is 3 hours behind Buffalo (Pacific Time vs Eastern Time). Plan for the time shift when scheduling connections or first-day activities.

  • What car rental options are available at Seattle/Tacoma Intl Airport (SEA)?

    Seattle/Tacoma Intl Airport (SEA) hosts 5 major car rental companies, with daily rates starting from around C$ 5 for economy cars. Top options include:
    • Fox
    • Europcar
    • Thrifty
    • Budget
    • Dollar

  • How much should I expect to pay for a Buffalo to Seattle flight?

    Round-trip flights from Buffalo to Seattle range from C$ 586 to C$ 845, with an average of C$ 711 over the past 12 months. Anything below C$ 586 counts as a good deal.

Your guide to booking Buffalo to Seattle flights

Get tips on when to book, when to fly, and what to know before your trip.
  • If your dates are flexible, aim for a Monday departure instead of Saturday. On this route, Monday flights average C$ 614 – about C$ 171 less than Saturday (22% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 20 weeks before you fly. On this route, that window historically saves about 46% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your Buffalo to Seattle trip for February. Fares historically average C$ 533 round-trip in that month – typically C$ 282 less than the most expensive month, which is April (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Seattle/Tacoma Intl Airport.
    - Seattle Airport Marriott
    - Coast Gateway Hotel
    - Fairfield by Marriott Inn & Suites Seattle Sea-Tac Airport
  • 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.

More options for your flight from Buffalo to Seattle

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