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$146+ 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 10/14. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — SEA
juil. 7 — juil. 141
lun. 7/7
lun. 7/14
1 adult, Economy
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Cheapflights Tip: The best prices from Buffalo to Seattle/Tacoma Intl are usually found in October or March, booked 25 days in advance, depart on a Tuesday or Wednesday and return on a Wednesday

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 juillet 2, 2025.

Round-trip from

$329
(American Airlines)

One-way from

$162
(Priceline)

Popular in

December

Cheapest in

October

Average price

$496
From Buffalo to Seattle/Tacoma Intl
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One-way flight from Buffalo to Seattle/Tacoma Intl
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Highest demand for flights based on searches. 3% potential increase in price ($18 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($10 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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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 juillet 2, 2025.

This FlightHub deal was found by Cheapflights users on 7/1. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven. 9/194:57 pmBUF - SEA
1 stop30h 46mFrontier
sam. 9/277:00 amSEA - BUF
1 stop30h 02mFrontier
Deal found 7/1$341
This CheapOair deal was found by Cheapflights users on 7/1. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 8/2111:45 amBUF - SEA
1 stop13h 58mMultiple Airlines
sam. 8/306:25 amSEA - BUF
1 stop27h 57mMultiple Airlines
Deal found 7/1$342
This Southwest deal was found by Cheapflights users on 7/2. 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.
mar. 8/56:45 pmBUF - SEA
1 stop7h 50mSouthwest
mar. 8/126:45 amSEA - BUF
1 stop8h 30mSouthwest
Deal found 7/2$343
This JetBlue deal was found by Cheapflights users on 7/1. 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.
mar. 8/52:05 pmBUF - SEA
1 stop10h 54mJetBlue
mar. 8/129:14 pmSEA - BUF
1 stop9h 54mJetBlue
Deal found 7/1$346
This American Airlines deal was found by Cheapflights users on 7/2. 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.
sam. 8/234:58 pmBUF - SEA
1 stop9h 43mAmerican Airlines
ven. 8/2912:46 amSEA - BUF
1 stop7h 19mAmerican Airlines
Deal found 7/2$347
This Cheapflightsfares deal was found by Cheapflights users on 7/1. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven. 8/111:35 amBUF - SEA
1 stop14h 15mSun Country Air
mer. 8/66:40 pmSEA - BUF
1 stop13h 32mSun Country Air
Deal found 7/1$358
This Delta deal was found by Cheapflights users on 7/1. 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.
mar. 8/1912:17 pmBUF - SEA
1 stop8h 34mDelta
mer. 8/279:45 pmSEA - BUF
1 stop10h 12mDelta
Deal found 7/1$380

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 juillet 2, 2025.
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

ven. 9/19

4:57 pm-8:43 pm

1 stop30h 46m

Seattle/Tacoma Intl

sam. 9/27

7:00 am-4:02 pm

1 stop30h 02m

$341

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

jeu. 8/21

11:45 am-10:43 pm

1 stop13h 58m

Seattle/Tacoma Intl

sam. 8/30

6:25 am-1:22 pm

1 stop27h 57m

$342

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

mar. 8/5

6:45 pm-11:35 pm

1 stop7h 50m

Seattle/Tacoma Intl

mar. 8/12

6:45 am-6:15 pm

1 stop8h 30m

$343

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

mar. 8/5

2:05 pm-9:59 pm

1 stop10h 54m

Seattle/Tacoma Intl

mar. 8/12

9:14 pm-10:08 am

1 stop9h 54m

$346

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

sam. 8/23

4:58 pm-11:41 pm

1 stop9h 43m

Seattle/Tacoma Intl

ven. 8/29

12:46 am-11:05 am

1 stop7h 19m

$347

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

ven. 8/1

11:35 am-10:50 pm

1 stop14h 15m

Seattle/Tacoma Intl

mer. 8/6

6:40 pm-11:12 am

1 stop13h 32m

$358

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

mar. 8/19

12:17 pm-5:51 pm

1 stop8h 34m

Seattle/Tacoma Intl

mer. 8/27

9:45 pm-10:57 am

1 stop10h 12m

$380

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

mar. 10/14

3:55 pm-10:10 pm

1 stop9h 15m

$146

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

dim. 8/24

12:09 pm-2:46 pm

1 stop29h 37m

$163

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

mer. 7/30

5:12 pm-11:42 pm

1 stop9h 30m

$172

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/2

Showing 1-10 of 16 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 June 27, 2025.

The best time to book flights from Buffalo to Seattle is 25 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, January is the cheapest month in which you can book a flight from Buffalo to Seattle (average of $238). Flying from Buffalo to Seattle in July is currently the most expensive (average of $390). 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.

What is the cheapest time of day to fly from BUF to SEA?

Find hourly flight availability from Buffalo to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated juillet 2, 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 20% on flights from Buffalo to Seattle by exploring options for tickets in the afternoon.

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

Use this chart to determine the cheapest time to fly round-trip from Buffalo to Seattle. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Buffalo to Seattle flight should consider departing on Wednesday evenings when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

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

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 juillet 2, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Southwest, and Delta 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.
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Food

7.1

Crew

8.5

Comfort

7.8

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Food

7.1

Crew

8.5

Comfort

7.8

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Southwest
8.0
Very good
4,272 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Food

7.1

Crew

8.5

Comfort

7.8

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Delta
8.0
Very good
7,983 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Food

7.1

Crew

8.5

Comfort

7.8

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
United Airlines
7.4
Good
8,861 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Food

7.1

Crew

8.5

Comfort

7.8

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
JetBlue
7.3
Good
2,918 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Food

7.1

Crew

8.5

Comfort

7.8

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

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.

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

    Cheapflights users have booked flights from Buffalo to Seattle round-trip from $329. Other airlines that can offer you cheap pricing are Sun Country Air, from $334, and Frontier, from $341. American Airlines is currently priced 30% 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 $162. Sun Country Air flights start at $163 while deals on JetBlue start at $169 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, January is the cheapest month in which you can book a flight from Buffalo to Seattle (average of $238). Flying from Buffalo to Seattle in July is currently the most expensive (average of $390). 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 Buffalo?

Book flights to Buffalo if you plan to visit one of these locations
SeaTac
Tukwila
Tacoma
Lakewood
Ocean Shores
Lacey
Leavenworth
Lynnwood
Renton
Olympia
Shoreline
Puyallup
Cle Elum
Centralia
Kent
Federal Way
Chehalis
Kirkland
Aberdeen
Shelton

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 8 airlines flying from Buffalo to Seattle

Discover the top 8 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 juillet 2, 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$145Average$287FlexibilityNo cancel feeOn-time62%
FrontierCheapest$166Average$290FlexibilityNo cancel feeOn-time62%
Sun Country AirCheapest$187Average$367FlexibilityNo cancel feeOn-time83%
American AirlinesCheapest$316Average$445FlexibilityNo cancel feeOn-time71%
DeltaCheapest$332Average$494FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$336Average$490FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$345Average$493FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$532Average$656FlexibilityNo cancel feeOn-time75%

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