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Cheap flights from Buffalo to Seattle from C$ 277

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 6/7. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — SEA
6 mar. — 13 mar.1
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 februar 2026.

on. 20/512:25 p.m.
BUF
-
SEA
1 stop11h 28m
JetBlue
to. 28/511:30 a.m.
SEA
-
BUF
1 stop8h 27m
JetBlue
Deal found 3/2C$ 410
ti. 14/47:00 a.m.
BUF
-
SEA
1 stop10h 42m
Delta
ti. 28/411:14 p.m.
SEA
-
BUF
1 stop9h 25m
Delta
Deal found 3/2C$ 490
on. 1/45:55 p.m.
BUF
-
SEA
1 stop7h 42m
United Airlines
ti. 14/411:59 p.m.
SEA
-
BUF
2 stops11h 18m
United Airlines
Deal found 4/2C$ 497
ma. 20/47:59 p.m.
BUF
-
SEA
1 stop17h 59m
Delta
ti. 28/411:14 p.m.
SEA
-
BUF
1 stop9h 25m
Delta
Deal found 3/2C$ 500
fr. 3/711:29 a.m.
BUF
-
SEA
1 stop14h 17m
Sun Country Air
sø. 5/711:59 p.m.
SEA
-
BUF
1 stop7h 57m
Sun Country Air
Deal found 2/2C$ 505
ti. 14/47:00 a.m.
BUF
-
SEA
1 stop10h 42m
Delta
to. 23/411:14 p.m.
SEA
-
BUF
1 stop9h 25m
Delta
Deal found 3/2C$ 508
on. 9/911:15 a.m.
BUF
-
SEA
1 stop14h 01m
Delta
ti. 15/93:30 p.m.
SEA
-
BUF
1 stop16h 05m
Delta
Deal found 31/1C$ 509
on. 13/512:25 p.m.
BUF
-
SEA
1 stop11h 28m
JetBlue
sø. 17/511:59 p.m.
SEA
-
BUF
1 stop8h 30m
JetBlue
Deal found 4/2C$ 514
ma. 20/47:59 p.m.
BUF
-
SEA
1 stop17h 59m
Delta
to. 23/411:14 p.m.
SEA
-
BUF
1 stop9h 25m
Delta
Deal found 3/2C$ 518
ma. 29/611:47 a.m.
BUF
-
SEA
1 stop8h 10m
Sun Country Air
to. 9/76:39 p.m.
SEA
-
BUF
1 stop12h 52m
Sun Country Air
Deal found 2/2C$ 519
ti. 14/47:00 a.m.
BUF
-
SEA
1 stop10h 42m
Delta
sø. 26/411:14 p.m.
SEA
-
BUF
1 stop13h 00m
Delta
Deal found 3/2C$ 522

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 februar 2026.

Round-trip from

C$ 410

One-way from

C$ 284

Popular in

November

Cheapest in

October

Average price

C$ 524
JetBlue
  • JetBlue
  • 20/5-28/5
  • 2 total stops
  • 19h 55m total
  • Buffalo to Seattle
Search Deals
Sun Country Air
  • Sun Country Air
  • 19/7
  • 1 total stop
  • 14h 05m total
  • Buffalo to Seattle
Search Deals
Highest demand for flights based on searches. 0% potential increase in price (C$ 6 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 24 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 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 februar 2026.
Use the filters below to find and compare flights from Buffalo to Seattle that are best for you.

Fly from

Buffalo

Fly to

Seattle

Route

Depart

Return

Price

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

on. 20/5

12:25 p.m.-8:53 p.m.

1 stop11h 28m

Seattle/Tacoma Intl

to. 28/5

11:30 a.m.-10:57 p.m.

1 stop8h 27m

C$ 507

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

on. 15/4

3:54 p.m.-9:49 p.m.

1 stop8h 55m

Seattle/Tacoma Intl

lø. 25/4

6:00 a.m.-10:39 p.m.

1 stop13h 39m

C$ 508

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

on. 13/5

12:25 p.m.-8:53 p.m.

1 stop11h 28m

Seattle/Tacoma Intl

sø. 17/5

11:59 p.m.-11:29 a.m.

1 stop8h 30m

C$ 514

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

fr. 15/5

12:25 p.m.-8:53 p.m.

1 stop11h 28m

Seattle/Tacoma Intl

sø. 17/5

11:59 p.m.-11:29 a.m.

1 stop8h 30m

C$ 514

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

to. 2/7

11:17 a.m.-10:46 p.m.

1 stop14h 29m

Seattle/Tacoma Intl

to. 9/7

6:39 p.m.-10:31 a.m.

1 stop12h 52m

C$ 519

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

ma. 29/6

11:47 a.m.-4:57 p.m.

1 stop8h 10m

Seattle/Tacoma Intl

sø. 5/7

11:59 p.m.-10:56 a.m.

1 stop7h 57m

C$ 519

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

to. 2/7

11:17 a.m.-10:46 p.m.

1 stop14h 29m

Seattle/Tacoma Intl

sø. 5/7

11:59 p.m.-10:56 a.m.

1 stop7h 57m

C$ 519

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

on. 8/4

6:55 p.m.-12:10 a.m.

1 stop8h 15m

Seattle/Tacoma Intl

on. 15/4

11:45 p.m.-10:15 a.m.

1 stop7h 30m

C$ 526

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

ti. 14/4

7:00 a.m.-2:42 p.m.

1 stop10h 42m

Seattle/Tacoma Intl

to. 23/4

11:59 p.m.-6:51 p.m.

2 stops15h 52m

C$ 529

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

on. 15/4

3:54 p.m.-9:49 p.m.

1 stop8h 55m

Seattle/Tacoma Intl

ma. 27/4

11:59 p.m.-3:14 p.m.

2 stops12h 15m

C$ 529

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/2

Showing 1-10 of 21 results
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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?

Use this chart to determine the optimal time to book a round-trip flight from Buffalo to Seattle. Price data was last updated on 30 January 2026.

To ensure you get the cheapest price possible for a flight from Buffalo to Seattle, you should look to book at least 48 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, September is the cheapest month in which you can book a flight from Buffalo to Seattle (average of C$ 212). Flying from Buffalo to Seattle in December is currently the most expensive (average of C$ 445). 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.

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 februar 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
4,274 reviews
Check prices

Entertainment

7.5

Crew

8.6

Overall

8.0

Boarding

8.1

Comfort

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Southwest
8.0
Very good
4,274 reviews
Southwest
8.0
Very good
4,274 reviews
Check prices

Entertainment

7.5

Crew

8.6

Overall

8.0

Boarding

8.1

Comfort

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Delta
7.9
Good
8,146 reviews
Southwest
8.0
Very good
4,274 reviews
Check prices

Entertainment

7.5

Crew

8.6

Overall

8.0

Boarding

8.1

Comfort

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

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 8h 55m. Fly via Delta, JetBlue, or Sun Country Air 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$ 228), and Southwest (C$ 418) offers the cheapest pricing from Buffalo to Seattle. Delta is priced at 62% 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, September is the cheapest month in which you can book a flight from Buffalo to Seattle (average of C$ 212). Flying from Buffalo to Seattle in December is currently the most expensive (average of C$ 445). 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
Leavenworth
SeaTac
Mukilteo
Tacoma
Kent
Bothell
Cashmere
Tukwila
Olympia
Renton
Marysville
Lynnwood
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 februar 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapestC$ 228AverageC$ 525FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
SouthwestCheapestC$ 418AverageC$ 582FlexibilityNo 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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