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$137+ Cheap flights from Buffalo to Seattle (BUF - SEA)

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 2/9. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — SEA
Feb 23 — Mar 21
Mon 2/23
Mon 3/2
1 adult, Economy
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Cheap flight deals from Buffalo to Seattle

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 January 24, 2026.

This JetBlue deal was found by Cheapflights users on 1/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/1612:25 pm
BUF
-
SEA
1 stop11h 28m
JetBlue
Tue 5/2611:59 pm
SEA
-
BUF
1 stop8h 30m
JetBlue
Deal found 1/23$263
This JetBlue deal was found by Cheapflights users on 1/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/2012:25 pm
BUF
-
SEA
1 stop11h 28m
JetBlue
Thu 5/2811:59 pm
SEA
-
BUF
1 stop8h 30m
JetBlue
Deal found 1/23$298
This JetBlue deal was found by Cheapflights users on 1/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/161:35 pm
BUF
-
SEA
1 stop12h 05m
JetBlue
Fri 7/2410:10 pm
SEA
-
BUF
1 stop8h 29m
JetBlue
Deal found 1/23$334
This JetBlue deal was found by Cheapflights users on 1/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/1312:25 pm
BUF
-
SEA
1 stop11h 28m
JetBlue
Sun 5/1711:59 pm
SEA
-
BUF
1 stop8h 30m
JetBlue
Deal found 1/23$337
This American Airlines deal was found by Cheapflights users on 1/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/186:01 pm
BUF
-
SEA
1 stop9h 23m
American Airlines
Wed 2/251:37 pm
SEA
-
BUF
1 stop7h 03m
American Airlines
Deal found 1/22$359
This Booking.com deal was found by Cheapflights users on 1/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/1011:29 am
BUF
-
SEA
1 stop14h 17m
Sun Country Air
Sat 7/186:21 pm
SEA
-
BUF
1 stop13h 20m
Sun Country Air
Deal found 1/23$365
This United Airlines deal was found by Cheapflights users on 1/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/252:54 pm
BUF
-
SEA
1 stop9h 02m
United Airlines
Wed 3/412:55 pm
SEA
-
BUF
1 stop7h 04m
United Airlines
Deal found 1/24$367
This American Airlines deal was found by Cheapflights users on 1/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/184:25 pm
BUF
-
SEA
1 stop8h 32m
American Airlines
Mon 2/2310:57 pm
SEA
-
BUF
1 stop9h 01m
American Airlines
Deal found 1/22$372

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 January 24, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$263
(JetBlue)

One-way from

$137
(Kiwi.com)

Popular in

November

Cheapest in

October

Average price

$506
Provider with most accurate pricing for Buffalo-Seattle/Tacoma Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Buffalo-Seattle/Tacoma Intl flights.
Search Deals
From Buffalo to Seattle/Tacoma Intl
Search Deals
One-way flight from Buffalo to Seattle/Tacoma Intl
Search Deals
Highest demand for flights based on searches. 0% potential increase in price ($3 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($13 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 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 2,558,603 searches. Data last updated January 24, 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

Sat 5/16

12:25 pm-8:53 pm

1 stop11h 28m

Seattle/Tacoma Intl

Tue 5/26

11:59 pm-11:29 am

1 stop8h 30m

$263

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Thu 7/16

1:35 pm-10:40 pm

1 stop12h 05m

Seattle/Tacoma Intl

Fri 7/24

10:10 pm-9:39 am

1 stop8h 29m

$334

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Sun 7/12

11:23 am-7:55 am

1 stop23h 32m

Seattle/Tacoma Intl

Wed 7/15

6:09 pm-9:53 am

1 stop12h 44m

$365

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Wed 2/25

2:54 pm-8:56 pm

1 stop9h 02m

Seattle/Tacoma Intl

Wed 3/4

12:55 pm-10:59 pm

1 stop7h 04m

$367

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Wed 2/25

12:20 pm-11:05 pm

2 stops13h 45m

Seattle/Tacoma Intl

Wed 3/4

8:45 am-10:00 pm

1 stop10h 15m

$372

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Mon 4/13

5:30 am-11:34 am

1 stop9h 04m

Seattle/Tacoma Intl

Mon 4/20

11:16 am-9:30 pm

1 stop7h 14m

$385

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Thu 2/19

6:15 am-10:42 am

1 stop7h 27m

Seattle/Tacoma Intl

Mon 2/23

9:55 pm-11:05 am

1 stop10h 10m

$385

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Sun 7/12

11:23 am-7:55 am

1 stop23h 32m

Seattle/Tacoma Intl

Thu 7/16

11:59 pm-10:41 am

1 stop7h 42m

$385

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Tue 3/24

1:52 pm-7:03 pm

1 stop8h 11m

Seattle/Tacoma Intl

Tue 3/24

11:59 pm-2:14 pm

2 stops11h 15m

$390

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Sun 3/8

9:25 pm-11:19 am

2 stops16h 54m

$142

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/22

Showing 1-10 of 19 results
1
2

Compare providers for flights from Buffalo to Seattle

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Buffalo to Seattle in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Buffalo-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Buffalo-Seattle flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Buffalo-Seattle flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Buffalo-Seattle flights, Cheapflights users trust Expedia the most. Expedia has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Buffalo-Seattle flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 January 16, 2026.

The best time to book flights from Buffalo to Seattle is 48 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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 $155). Flying from Buffalo to Seattle in December is currently the most expensive (average of $326). 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 January 24, 2026.
Peruse reviews from past customers who have flown with Southwest, Delta, and United Airlines from Buffalo to Seattle to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,268 reviews

Overall

8.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Entertainment

7.5

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
4,268 reviews
Southwest
8.0
Very good
4,268 reviews

Overall

8.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Entertainment

7.5

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
8,110 reviews
Southwest
8.0
Very good
4,268 reviews

Overall

8.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Entertainment

7.5

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
United Airlines
7.4
Good
9,194 reviews
Southwest
8.0
Very good
4,268 reviews

Overall

8.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Entertainment

7.5

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
American Airlines
7.2
Good
11,192 reviews
Southwest
8.0
Very good
4,268 reviews

Overall

8.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Entertainment

7.5

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
Frontier
5.7
Fair
3,058 reviews
Southwest
8.0
Very good
4,268 reviews

Overall

8.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Entertainment

7.5

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?

    Departing from Buffalo to Seattle will take you 9h 02m. There are 2115 mi between Buffalo and Seattle. Both multi-stop and nonstop flights can be found to your destination and back.

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

    Cheapflights users have booked flights from Buffalo to Seattle round-trip from $125. Other airlines that can offer you cheap pricing are Frontier, from $150, and Delta, from $173. JetBlue is currently priced 72% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from Buffalo to Seattle one-way?

    To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $93. American Airlines flights start at $138 while deals on Sun Country Air start at $148 one-way.

  • 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 $155). Flying from Buffalo to Seattle in December is currently the most expensive (average of $326). 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

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Tacoma
SeaTac
Lakewood
Ocean Shores
Olympia
Lynnwood
Lacey
Edmonds
Renton
Puyallup
Kirkland
Kent
Tukwila
Fife
Aberdeen
Shoreline
Marysville
Centralia
Federal Way
Chehalis

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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.
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Top 6 airlines flying from Buffalo to Seattle

Discover the top 6 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 2,558,603 searches. Data last updated January 24, 2026.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$125Average$270FlexibilityNo cancel feeOn-time62%
FrontierCheapest$150Average$277FlexibilityNo cancel feeOn-time62%
DeltaCheapest$173Average$473FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$324Average$456FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$326Average$467FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$335Average$446FlexibilityNo cancel feeOn-time63%

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