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Cheap flights from Buffalo to Seattle from C$ 247

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 31/8. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — SEA
3 Sep — 10 Sep1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Buffalo to Seattle

Enter your travel dates to find the best prices.

Cheapest flights from Buffalo to Seattle
Explore the most affordable flight options available from Buffalo to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 4 August 2026.

Sat 5/95:15 p.m. -
1 stop7h 15m
Fri 11/95:15 a.m. -
1 stop7h 00m
Deal found 1/8C$ 516
Fri 30/1012:15 p.m. -
1 stop9h 20m
Sat 7/116:00 a.m. -
1 stop6h 01m
Deal found 3/8C$ 533
Tue 25/86:25 p.m. -
1 stop8h 10m
Wed 9/910:30 p.m. -
1 stop9h 40m
Deal found 4/8C$ 540
Sat 19/95:15 p.m. -
1 stop9h 43m
Mon 21/96:00 a.m. -
1 stop8h 52m
Deal found 4/8C$ 550
Mon 21/96:56 p.m. -
1 stop8h 15m
Thu 24/96:15 a.m. -
1 stop8h 03m
Deal found 3/8C$ 551
Tue 15/912:35 p.m. -
1 stop8h 20m
Sat 26/911:00 p.m. -
2 stops10h 15m
Deal found 2/8C$ 557
Thu 1/1012:19 p.m. -
1 stop11h 25m
Sun 4/1011:42 p.m. -
1 stop10h 47m
Deal found 1/8C$ 559
Tue 25/83:00 p.m. -
2 stops11h 05m
Wed 2/95:20 a.m. -
2 stops9h 25m
Deal found 3/8C$ 564
Fri 28/87:52 p.m. -
1 stop7h 02m
Sat 5/95:30 a.m. -
1 stop6h 44m
Deal found 3/8C$ 566
Fri 4/93:54 p.m. -
1 stop9h 11m
Sat 12/911:05 p.m. -
1 stop6h 19m
Deal found 4/8C$ 573

Find flight deals from Buffalo to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Buffalo (BUF) to Seattle (SEA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 4 August 2026.

Round-trip from

C$ 516

One-way from

C$ 247

Popular in

April

Cheapest in

February

Average price

C$ 727
Southwest
  • Southwest
  • 5/9-11/9
  • 2 total stops
  • 14h 15m total
  • Buffalo to Seattle
Search Deals
Frontier
  • Frontier
  • 31/8
  • 2 total stops
  • 28h 46m total
  • Buffalo to Seattle
Search Deals
Highest demand for flights based on searches. 1% potential increase in price (C$ 17 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 18 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Buffalo to Seattle that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 4 August 2026.
Use the filters below to find and compare flights from Buffalo to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Sat 12/9

10:27 a.m.-5:42 p.m.

2 stops10h 15m

Seattle/Tacoma Intl

Sat 19/9

11:00 p.m.-9:18 a.m.

1 stop7h 18m

C$ 523

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Wed 9/9

7:25 p.m.-11:55 p.m.

1 stop7h 30m

Seattle/Tacoma Intl

Thu 17/9

11:45 a.m.-11:53 p.m.

1 stop9h 08m

C$ 540

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Tue 15/9

12:35 p.m.-5:55 p.m.

1 stop8h 20m

Seattle/Tacoma Intl

Sat 26/9

11:05 p.m.-10:50 a.m.

1 stop8h 45m

C$ 550

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Tue 1/9

12:00 p.m.-8:25 p.m.

2 stops11h 25m

Seattle/Tacoma Intl

Tue 8/9

10:30 p.m.-2:20 p.m.

1 stop12h 50m

C$ 599

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Fri 28/8

3:55 p.m.-10:55 p.m.

2 stops10h 00m

Seattle/Tacoma Intl

Mon 31/8

11:00 p.m.-3:25 p.m.

1 stop13h 25m

C$ 599

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Sat 22/8

8:55 a.m.-4:14 p.m.

2 stops10h 19m

Seattle/Tacoma Intl

Sat 29/8

8:10 a.m.-7:00 p.m.

1 stop7h 50m

C$ 668

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Sun 13/9

7:00 p.m.-11:15 p.m.

1 stop7h 15m

Seattle/Tacoma Intl

Sun 20/9

11:05 p.m.-10:45 a.m.

1 stop8h 40m

C$ 685
Quickest round-trip

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Thu 20/8

7:52 p.m.-11:54 p.m.

1 stop7h 02m

Seattle/Tacoma Intl

Tue 1/9

11:10 p.m.-8:15 a.m.

1 stop6h 05m

C$ 701

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Thu 20/8

5:25 p.m.-12:20 a.m.

1 stop9h 55m

Seattle/Tacoma Intl

Tue 1/9

11:05 p.m.-12:30 p.m.

2 stops10h 25m

C$ 708

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Sat 19/9

7:00 a.m.-11:32 a.m.

1 stop7h 32m

Seattle/Tacoma Intl

Mon 21/9

11:00 p.m.-2:18 p.m.

2 stops12h 18m

C$ 711

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/8

Showing 1-10 of 19 resultsSorted by cheapest first
1
2

Best time to book a flight from Buffalo to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Buffalo with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

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

To ensure you get the cheapest price possible for a flight from Buffalo to Seattle, you should look to book at least 47 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Buffalo to Seattle?

Currently, February is the cheapest month in which you can book a flight from Buffalo to Seattle (average of C$ 540). Flying from Buffalo to Seattle in April is currently the most expensive (average of C$ 825). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost to fly round-trip from Buffalo to Seattle?

Airfare is below average for this route at the moment.

Buffalo to Seattle flights typically cost between C$ 620 and C$ 964 in September.
The cheapest round-trip price found within the last 5 days was C$ 516 on Southwest (5 Sep-11 Sep).

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Seattle. Reviews last updated 4 August 2026.
Get a feel of what it's like to fly with Southwest and Delta from Buffalo to Seattle by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,220 reviews
Check prices

Entertainment

7.5

Food

7.0

Comfort

8.0

Overall

8.0

Crew

8.6

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Libby,Jun 2026

TUS - LAS

One delay in a 2 layover flight=a good trip. The crew was great.
Southwest
8.0
Very good
4,220 reviews
Southwest
8.0
Very good
4,220 reviews
Check prices

Entertainment

7.5

Food

7.0

Comfort

8.0

Overall

8.0

Crew

8.6

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Libby,Jun 2026

TUS - LAS

One delay in a 2 layover flight=a good trip. The crew was great.
Delta
7.8
Good
8,487 reviews
Southwest
8.0
Very good
4,220 reviews
Check prices

Entertainment

7.5

Food

7.0

Comfort

8.0

Overall

8.0

Crew

8.6

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Libby,Jun 2026

TUS - LAS

One delay in a 2 layover flight=a good trip. The crew was great.

Related info for your journey

Find useful and relevant information for your journey from Buffalo to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Buffalo to Seattle?

    There are many flights that can get you from Buffalo to Seattle in 7h 30m. Fly via United Airlines, Delta, or Southwest to get the fastest option. Buffalo and Seattle are separated by a distance of 3404 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • What are the cheapest airlines flying from Buffalo to Seattle round-trip?

    According to our current data, Delta (C$ 235), and Southwest (C$ 431) offers the cheapest pricing from Buffalo to Seattle. Delta is priced at 65% lower than the current average price of a flight leaving 3 months from now.

  • Can I find deals for flights from Buffalo to Seattle that include hotel bookings?

    Yes. In addition to deals on Buffalo to Seattle flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Buffalo to Seattle?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Buffalo to Seattle.

  • Can I find deals for business class flights from Buffalo to Seattle?

    Yes. Cheapflights offers flight deals from Buffalo to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Buffalo to Seattle?

    Currently, February is the cheapest month in which you can book a flight from Buffalo to Seattle (average of C$ 540). Flying from Buffalo to Seattle in April is currently the most expensive (average of C$ 825). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
SeaTac
Kent
Leavenworth
Mukilteo
Tacoma
Renton
Cashmere
Lynnwood
Ellensburg
Tukwila
Olympia
Marysville
Federal Way
Kirkland

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Buffalo to Seattle

See prices for flight routes from nearby airports that may be better suited for you.
Newark to Seattle flights
Buffalo to Portland flights
John F Kennedy Intl to Seattle flights

Top 2 airlines flying from Buffalo to Seattle

Discover the top 2 airlines that operate flights from Buffalo to Seattle. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 4 August 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapestC$ 235AverageC$ 540FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
SouthwestCheapestC$ 431AverageC$ 782FlexibilityNo cancel feeOn-time63%
Search Southwest flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Buffalo to Seattle?

Cheapflights makes it easy to find Buffalo to Seattle flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Buffalo to Seattle?

Cheapflights simply makes it quick and affordable to book flights from Buffalo to Seattle by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Buffalo to Seattle with no change fees?

Yes, we can. To see specific flights from Buffalo to Seattle with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Buffalo to Seattle become cheaper?

Not ready to book yet? You can track prices for flights from Buffalo to Seattle on Cheapflights with our Price Alert feature and get notified when better prices are available.

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