HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Seattle

$130+ 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
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Buffalo to Seattle with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Buffalo to Seattle/Tacoma Intl are usually found in September or October, 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 September 15, 2025.

Round-trip from

$197
(Frontier)

One-way from

$130
(American Airlines)

Popular in

December

Cheapest in

September

Average price

$411
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. 7% potential increase in price ($39 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($12 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
Search Deals

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 September 15, 2025.

This Priceline deal was found by Cheapflights users on 9/12. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/264:57 pmBUF - SEA
1 stop10h 33mFrontier
Mon 9/296:12 amSEA - BUF
1 stop6h 51mFrontier
Deal found 9/12$155
This Frontier deal was found by Cheapflights users on 9/14. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/264:57 pmBUF - SEA
1 stop10h 33mFrontier
Mon 10/66:12 amSEA - BUF
1 stop6h 51mFrontier
Deal found 9/14$197
This Frontier deal was found by Cheapflights users on 9/14. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/105:24 pmBUF - SEA
1 stop21h 43mFrontier
Thu 10/161:02 pmSEA - BUF
1 stop24h 27mFrontier
Deal found 9/14$232
This Frontier deal was found by Cheapflights users on 9/14. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/309:04 pmBUF - SEA
2 stops18h 09mFrontier
Thu 11/61:08 pmSEA - BUF
2 stops21h 39mFrontier
Deal found 9/14$242
This American Airlines deal was found by Cheapflights users on 9/13. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/15:27 pmBUF - SEA
1 stop9h 27mAmerican Airlines
Mon 11/312:42 pmSEA - BUF
1 stop7h 44mAmerican Airlines
Deal found 9/13$249
This Kiwi.com deal was found by Cheapflights users on 9/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/256:22 pmBUF - SEA
2 stops33h 08mFrontier
Sun 10/56:12 amSEA - BUF
1 stop30h 51mFrontier
Deal found 9/13$251
This Frontier deal was found by Cheapflights users on 9/12. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/264:57 pmBUF - SEA
1 stop10h 33mFrontier
Sun 9/286:12 amSEA - BUF
1 stop6h 50mFrontier
Deal found 9/12$256
This Delta deal was found by Cheapflights users on 9/15. 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.
Wed 10/156:20 amBUF - SEA
1 stop7h 13mDelta
Wed 10/226:00 amSEA - BUF
1 stop6h 16mDelta
Deal found 9/15$259
This FlightHub deal was found by Cheapflights users on 9/13. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/194:57 pmBUF - SEA
1 stop30h 42mFrontier
Sat 9/277:00 amSEA - BUF
1 stop30h 02mFrontier
Deal found 9/13$268
This Delta deal was found by Cheapflights users on 9/14. 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.
Wed 10/224:35 pmBUF - SEA
1 stop10h 19mDelta
Sat 10/256:00 amSEA - BUF
1 stop7h 25mDelta
Deal found 9/14$269
This Delta deal was found by Cheapflights users on 9/13. 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.
Fri 10/2412:49 pmBUF - SEA
1 stop8h 34mDelta
Mon 10/279:55 pmSEA - BUF
1 stop10h 06mDelta
Deal found 9/13$272

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 September 15, 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

Wed 10/15

6:00 am-11:03 am

1 stop8h 03m

Seattle/Tacoma Intl

Tue 10/21

12:34 am-10:42 am

1 stop7h 08m

$259

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Wed 10/15

6:20 am-10:33 am

1 stop7h 13m

Seattle/Tacoma Intl

Wed 10/22

11:15 pm-8:23 am

1 stop6h 08m

$259

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Sat 11/1

11:11 am-7:27 pm

2 stops11h 16m

Seattle/Tacoma Intl

Sun 11/2

12:59 am-2:25 pm

1 stop10h 26m

$259

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Fri 10/24

12:49 pm-6:23 pm

1 stop8h 34m

Seattle/Tacoma Intl

Mon 10/27

9:55 pm-11:01 am

1 stop10h 06m

$272

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Fri 9/26

12:17 pm-12:30 am

2 stops15h 13m

Seattle/Tacoma Intl

Mon 9/29

6:12 am-4:03 pm

1 stop6h 51m

$278

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Thu 10/23

5:39 pm-10:59 pm

1 stop8h 20m

Seattle/Tacoma Intl

Fri 10/24

12:30 pm-11:43 pm

1 stop8h 13m

$279

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Thu 10/16

3:55 pm-10:36 pm

1 stop9h 41m

Seattle/Tacoma Intl

Sun 10/19

11:56 pm-4:31 pm

1 stop13h 35m

$281

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Mon 11/10

3:40 pm-12:35 am

2 stops11h 55m

Seattle/Tacoma Intl

Fri 11/14

5:55 pm-7:55 am

2 stops11h 00m

$289

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Tue 10/14

5:27 pm-12:27 am

1 stop10h 00m

$130

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Thu 10/30

6:20 am-10:33 am

1 stop7h 13m

$133

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Showing 1-10 of 15 results
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?

Use this chart to determine the optimal time to book a round-trip flight from Buffalo to Seattle. Price data was last updated on September 12, 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 June is currently the most expensive (average of $387). 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 September 15, 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 at noon.

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.

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 September 15, 2025.
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
4,242 reviews

Crew

8.6

Boarding

8.1

Entertainment

7.5

Food

7.0

Comfort

8.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,242 reviews
Southwest
8.0
Very good
4,242 reviews

Crew

8.6

Boarding

8.1

Entertainment

7.5

Food

7.0

Comfort

8.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Delta
8.0
Very good
7,954 reviews
Southwest
8.0
Very good
4,242 reviews

Crew

8.6

Boarding

8.1

Entertainment

7.5

Food

7.0

Comfort

8.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
United Airlines
7.4
Good
8,929 reviews
Southwest
8.0
Very good
4,242 reviews

Crew

8.6

Boarding

8.1

Entertainment

7.5

Food

7.0

Comfort

8.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,242 reviews

Crew

8.6

Boarding

8.1

Entertainment

7.5

Food

7.0

Comfort

8.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
JetBlue
7.2
Good
2,912 reviews
Southwest
8.0
Very good
4,242 reviews

Crew

8.6

Boarding

8.1

Entertainment

7.5

Food

7.0

Comfort

8.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

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 13m. 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 $155, and Sun Country Air, from $304. JetBlue is currently priced 73% 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 American Airlines, which is currently one of the cheapest options available, starting at $130. Delta flights start at $133 while deals on United Airlines start at $140 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 June is currently the most expensive (average of $387). 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
SeaTac
Tukwila
Tacoma
Lakewood
Ocean Shores
Lynnwood
Edmonds
Leavenworth
Renton
Lacey
Olympia
Kent
Federal Way
Cle Elum
Puyallup
Chehalis
Kirkland
Issaquah
Aberdeen
Shoreline

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Buffalo to Seattle

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Seattle flights
Newark to Seattle flights
LaGuardia to Seattle flights
John F Kennedy Intl to Portland flights
Newark to Portland flights
LaGuardia to Portland flights
Rochester to Seattle flights
Newark to Spokane flights
John F Kennedy Intl to Spokane flights
Albany to Seattle flights
Syracuse to Seattle flights
Islip to Seattle flights
White Plains to Seattle flights
LaGuardia to Spokane flights
Ithaca to Seattle flights
Islip to Portland flights
Buffalo to Portland flights
Rochester to Portland flights
Albany to Portland flights
Syracuse to Portland flights
Elmira to Seattle flights
White Plains to Portland flights
John F Kennedy Intl to Pasco flights
Buffalo to Spokane flights
LaGuardia to Pasco flights
John F Kennedy Intl to Bellingham flights
Newark to Bellingham flights
Newark to Pasco flights
John F Kennedy Intl to Wenatchee flights
Albany to Spokane flights
Newark to Wenatchee flights
Syracuse to Pasco flights
Rochester to Spokane flights
Newark to Walla Walla flights
LaGuardia to Bellingham flights
John F Kennedy Intl to Walla Walla flights
Watertown to Seattle flights
Binghamton to Seattle flights
Ithaca to Portland flights
Elmira to Portland flights
Binghamton to Portland flights
Newark to Pullman flights
Rutland to Seattle flights
John F Kennedy Intl to Yakima flights
LaGuardia to Yakima flights
Plattsburgh to Seattle flights
White Plains to Spokane flights
Rutland to Portland flights
Newark to Yakima flights

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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$125Average$287FlexibilityNo cancel feeOn-time62%
FrontierCheapest$155Average$280FlexibilityNo cancel feeOn-time62%
Sun Country AirCheapest$304Average$367FlexibilityNo cancel feeOn-time83%
DeltaCheapest$330Average$488FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$341Average$471FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$344Average$485FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$345Average$454FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$558Average$696FlexibilityNo cancel feeOn-time75%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.