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$147+ 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 2/27. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — SEA
Feb 13 — Feb 201
Fri 2/13
Fri 2/20
1 adult, Economy
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Cheap 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 14, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$295
(JetBlue)

One-way from

$147
(Kiwi.com)

Popular in

November

Cheapest in

October

Average price

$506
Provider with most accurate pricing for Buffalo-Seattle/Tacoma Intl flight deals.
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Provider most trusted by Cheapflights users for Buffalo-Seattle/Tacoma Intl flights.
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From Buffalo to Seattle/Tacoma Intl
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One-way flight from Buffalo to Seattle/Tacoma Intl
Search Deals
Highest demand for flights based on searches. 0% potential increase in price ($0 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($12 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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Find 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 14, 2026.

This JetBlue deal was found by Cheapflights users on 1/13. 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 5/1711:30 am
SEA
-
BUF
1 stop8h 27m
JetBlue
Deal found 1/13$295
This Sun Country Air deal was found by Cheapflights users on 1/13. 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 Sun Country Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/1612:17 pm
BUF
-
SEA
1 stop13h 29m
Sun Country Air
Wed 8/196:34 pm
SEA
-
BUF
1 stop13h 11m
Sun Country Air
Deal found 1/13$305
This Sun Country Air deal was found by Cheapflights users on 1/13. 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 Sun Country Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/2811:41 am
BUF
-
SEA
1 stop13h 59m
Sun Country Air
Sat 5/3010:26 am
SEA
-
BUF
1 stop22h 25m
Sun Country Air
Deal found 1/13$315
This JetBlue deal was found by Cheapflights users on 1/13. 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.
Sun 5/2412:25 pm
BUF
-
SEA
1 stop11h 28m
JetBlue
Wed 6/311:30 am
SEA
-
BUF
1 stop8h 27m
JetBlue
Deal found 1/13$330
This JetBlue deal was found by Cheapflights users on 1/13. 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 5/2312:25 pm
BUF
-
SEA
1 stop11h 28m
JetBlue
Tue 6/211:30 am
SEA
-
BUF
1 stop8h 27m
JetBlue
Deal found 1/13$332
This JetBlue deal was found by Cheapflights users on 1/13. 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.
Sun 5/2412:25 pm
BUF
-
SEA
1 stop11h 28m
JetBlue
Thu 6/411:59 pm
SEA
-
BUF
1 stop8h 30m
JetBlue
Deal found 1/13$333
This JetBlue deal was found by Cheapflights users on 1/13. 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 5/2312:25 pm
BUF
-
SEA
1 stop11h 28m
JetBlue
Thu 6/411:59 pm
SEA
-
BUF
1 stop8h 30m
JetBlue
Deal found 1/13$335
This Delta deal was found by Cheapflights users on 1/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/315:50 pm
BUF
-
SEA
1 stop7h 14m
Delta
Wed 4/159:45 pm
SEA
-
BUF
1 stop10h 16m
Delta
Deal found 1/13$359
This American Airlines deal was found by Cheapflights users on 1/12. 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 2/114:01 pm
BUF
-
SEA
1 stop9h 06m
American Airlines
Wed 2/1810:57 pm
SEA
-
BUF
1 stop8h 56m
American Airlines
Deal found 1/12$367
This JetBlue deal was found by Cheapflights users on 1/13. 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.
Mon 5/2512:25 pm
BUF
-
SEA
1 stop11h 28m
JetBlue
Tue 6/211:30 am
SEA
-
BUF
1 stop8h 27m
JetBlue
Deal found 1/13$371
This Southwest deal was found by Cheapflights users on 1/12. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/111:20 pm
BUF
-
SEA
2 stops12h 10m
Southwest
Wed 2/186:45 am
SEA
-
BUF
1 stop6h 30m
Southwest
Deal found 1/12$372
This JetBlue deal was found by Cheapflights users on 1/13. 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.
Sun 5/2412:25 pm
BUF
-
SEA
1 stop11h 28m
JetBlue
Mon 6/111:59 pm
SEA
-
BUF
1 stop8h 30m
JetBlue
Deal found 1/13$374

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 14, 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

Tue 3/31

5:50 pm-10:04 pm

1 stop7h 14m

Seattle/Tacoma Intl

Wed 4/15

9:45 pm-11:01 am

1 stop10h 16m

$359

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Thu 2/5

5:50 am-10:50 am

1 stop8h 00m

Seattle/Tacoma Intl

Mon 2/9

5:00 am-3:25 pm

1 stop7h 25m

$381

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Wed 4/8

3:56 pm-10:24 pm

1 stop9h 28m

Seattle/Tacoma Intl

Mon 4/13

10:40 pm-11:03 am

1 stop9h 23m

$382

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Mon 3/30

1:00 pm-6:26 pm

1 stop8h 26m

Seattle/Tacoma Intl

Wed 4/15

11:59 am-12:38 am

1 stop9h 39m

$382

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Mon 4/13

8:00 pm-12:05 am

1 stop7h 05m

Seattle/Tacoma Intl

Mon 4/20

11:55 pm-10:20 am

1 stop7h 25m

$385

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Tue 3/31

5:50 pm-10:04 pm

1 stop7h 14m

Seattle/Tacoma Intl

Thu 4/16

11:59 pm-3:13 pm

2 stops12h 14m

$397

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Mon 2/16

7:41 pm-11:05 am

1 stop18h 24m

Seattle/Tacoma Intl

Tue 2/17

9:55 pm-12:14 am

1 stop23h 19m

$398

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Mon 3/30

1:00 pm-6:26 pm

1 stop8h 26m

Seattle/Tacoma Intl

Thu 4/16

11:14 pm-11:45 am

1 stop9h 31m

$405

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Wed 4/8

3:56 pm-10:24 pm

1 stop9h 28m

Seattle/Tacoma Intl

Tue 4/14

11:00 pm-11:01 am

1 stop9h 01m

$405

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Tue 4/7

3:56 pm-10:24 pm

1 stop9h 28m

Seattle/Tacoma Intl

Mon 4/13

11:14 pm-11:45 am

1 stop9h 31m

$405

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/13

Showing 1-10 of 21 results
1
2
3

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
eDreamsPrice Accuracy3 starsTrust Score*3 stars
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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Buffalo-Seattle flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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 9, 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 14, 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
4,257 reviews

Comfort

8.0

Boarding

8.1

Entertainment

7.5

Crew

8.6

Food

7.0

Overall

8.0

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
4,257 reviews
Southwest
8.0
Very good
4,257 reviews

Comfort

8.0

Boarding

8.1

Entertainment

7.5

Crew

8.6

Food

7.0

Overall

8.0

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
8,040 reviews
Southwest
8.0
Very good
4,257 reviews

Comfort

8.0

Boarding

8.1

Entertainment

7.5

Crew

8.6

Food

7.0

Overall

8.0

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
9,156 reviews
Southwest
8.0
Very good
4,257 reviews

Comfort

8.0

Boarding

8.1

Entertainment

7.5

Crew

8.6

Food

7.0

Overall

8.0

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
11,118 reviews
Southwest
8.0
Very good
4,257 reviews

Comfort

8.0

Boarding

8.1

Entertainment

7.5

Crew

8.6

Food

7.0

Overall

8.0

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
3,056 reviews
Southwest
8.0
Very good
4,257 reviews

Comfort

8.0

Boarding

8.1

Entertainment

7.5

Crew

8.6

Food

7.0

Overall

8.0

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 7h 14m. 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 $145. Other airlines that can offer you cheap pricing are Frontier, from $150, and Delta, from $173. JetBlue is currently priced 67% 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. JetBlue flights start at $125 while deals on American Airlines start at $138 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
Marysville
Fife
Aberdeen
Shoreline
Centralia
Federal Way
Chehalis

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.
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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 14, 2026.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$145Average$287FlexibilityNo cancel feeOn-time62%
FrontierCheapest$155Average$280FlexibilityNo cancel feeOn-time62%
DeltaCheapest$324Average$486FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$327Average$457FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$335Average$446FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$344Average$474FlexibilityNo cancel feeOn-time69%

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