HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Seattle

$141+ 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 12/18. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — SEA
nov. 22 — nov. 291
sam. 11/22
sam. 11/29
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 49 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 octobre 23, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$221
(American Airlines)

One-way from

$141
(American Airlines)

Popular in

December

Cheapest in

September

Average price

$414
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. 8% potential increase in price ($43 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($9 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 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 octobre 23, 2025.

This American Airlines deal was found by Cheapflights users on 10/22. 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.
sam. 12/67:27 amBUF - SEA
1 stop18h 58mAmerican Airlines
ven. 12/1212:38 amSEA - BUF
1 stop10h 42mAmerican Airlines
Deal found 10/22$221
This American Airlines deal was found by Cheapflights users on 10/22. 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.
ven. 12/52:50 pmBUF - SEA
1 stop11h 35mAmerican Airlines
mar. 12/99:00 amSEA - BUF
1 stop11h 39mAmerican Airlines
Deal found 10/22$258
This American Airlines deal was found by Cheapflights users on 10/22. 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.
mar. 12/166:20 amBUF - SEA
1 stop9h 46mAmerican Airlines
jeu. 1/152:04 pmSEA - BUF
1 stop17h 48mAmerican Airlines
Deal found 10/22$276
This American Airlines deal was found by Cheapflights users on 10/22. 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.
jeu. 12/42:50 pmBUF - SEA
1 stop11h 35mAmerican Airlines
sam. 12/612:38 amSEA - BUF
1 stop12h 22mAmerican Airlines
Deal found 10/22$283
This American Airlines deal was found by Cheapflights users on 10/23. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven. 12/52:50 pmBUF - SEA
1 stop11h 35mAmerican Airlines
sam. 12/612:38 amSEA - BUF
1 stop10h 42mAmerican Airlines
Deal found 10/23$295
This American Airlines deal was found by Cheapflights users on 10/21. 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.
ven. 12/52:50 pmBUF - SEA
1 stop11h 35mAmerican Airlines
jeu. 12/1112:38 amSEA - BUF
1 stop10h 42mAmerican Airlines
Deal found 10/21$296
This American Airlines deal was found by Cheapflights users on 10/23. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven. 12/52:50 pmBUF - SEA
1 stop11h 35mAmerican Airlines
lun. 12/86:15 amSEA - BUF
1 stop8h 35mAmerican Airlines
Deal found 10/23$308
This Southwest deal was found by Cheapflights users on 10/22. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven. 12/53:00 pmBUF - SEA
1 stop10h 55mSouthwest
mar. 12/98:10 amSEA - BUF
2 stops11h 30mSouthwest
Deal found 10/22$324

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 octobre 23, 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

sam. 2/28

6:00 am-12:29 pm

1 stop9h 29m

Seattle/Tacoma Intl

sam. 2/28

9:55 pm-10:37 am

1 stop9h 42m

$281

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

jeu. 12/4

2:50 pm-11:25 pm

1 stop11h 35m

Seattle/Tacoma Intl

sam. 12/6

12:38 am-4:00 pm

1 stop12h 22m

$283

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

sam. 2/28

7:00 am-11:49 am

1 stop7h 49m

Seattle/Tacoma Intl

sam. 2/28

11:59 pm-2:13 pm

2 stops11h 14m

$309

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

dim. 2/15

3:35 pm-11:40 pm

1 stop11h 05m

Seattle/Tacoma Intl

mer. 2/18

6:45 am-4:15 pm

1 stop6h 30m

$325

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

ven. 12/5

2:50 pm-11:25 pm

1 stop11h 35m

Seattle/Tacoma Intl

dim. 12/7

6:00 am-6:27 pm

1 stop9h 27m

$346

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

ven. 2/13

12:25 pm-10:25 pm

1 stop13h 00m

Seattle/Tacoma Intl

dim. 2/15

11:05 pm-9:45 am

1 stop7h 40m

$357

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

mer. 11/12

5:47 pm-10:23 pm

1 stop7h 36m

Seattle/Tacoma Intl

sam. 11/22

11:10 pm-8:34 am

1 stop6h 24m

$359

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

sam. 12/6

6:12 am-10:40 am

1 stop7h 28m

Seattle/Tacoma Intl

sam. 12/13

11:15 pm-8:34 am

1 stop6h 19m

$365

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

lun. 2/9

11:15 am-7:25 pm

1 stop11h 10m

Seattle/Tacoma Intl

lun. 2/16

9:55 pm-10:37 am

1 stop9h 42m

$379

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

mer. 11/19

6:12 am-10:46 am

1 stop7h 34m

Seattle/Tacoma Intl

mer. 11/26

3:15 pm-5:15 pm

1 stop23h 00m

$386

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/23

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 October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy2 starsTrust Score*1 star

*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 FlightHub the most. FlightHub 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 October 17, 2025.

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 $318). 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 octobre 23, 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 47% on flights from Buffalo to Seattle by exploring options for tickets in the evening.

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. Friday mornings 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 octobre 23, 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
4,236 reviews

Entertainment

7.5

Food

7.0

Comfort

8.0

Overall

8.0

Crew

8.6

Boarding

8.1

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
4,236 reviews
Southwest
8.0
Very good
4,236 reviews

Entertainment

7.5

Food

7.0

Comfort

8.0

Overall

8.0

Crew

8.6

Boarding

8.1

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
7.9
Good
7,982 reviews
Southwest
8.0
Very good
4,236 reviews

Entertainment

7.5

Food

7.0

Comfort

8.0

Overall

8.0

Crew

8.6

Boarding

8.1

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
8,995 reviews
Southwest
8.0
Very good
4,236 reviews

Entertainment

7.5

Food

7.0

Comfort

8.0

Overall

8.0

Crew

8.6

Boarding

8.1

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
11,033 reviews
Southwest
8.0
Very good
4,236 reviews

Entertainment

7.5

Food

7.0

Comfort

8.0

Overall

8.0

Crew

8.6

Boarding

8.1

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
Frontier
5.8
Fair
3,128 reviews
Southwest
8.0
Very good
4,236 reviews

Entertainment

7.5

Food

7.0

Comfort

8.0

Overall

8.0

Crew

8.6

Boarding

8.1

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 49m. 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 American Airlines, from $328. JetBlue is currently priced 73% below the average price you’ll pay for this route.

  • 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 $318). 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
Marysville
Puyallup
Chehalis
Kirkland
Fife
Issaquah

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
Albany to Seattle flights
White Plains to Seattle flights
Syracuse to Seattle flights
John F Kennedy Intl to Spokane flights
Newark to Spokane flights
Albany to Portland flights
Syracuse to Portland flights
LaGuardia to Spokane flights
Ithaca to Seattle flights
Buffalo to Portland flights
Rochester to Portland flights
Islip to Seattle flights
Elmira to Seattle flights
John F Kennedy Intl to Pasco flights
Watertown to Seattle flights
White Plains to Portland flights
Ithaca to Portland flights
John F Kennedy Intl to Bellingham flights
Newark to Pasco flights
Newark to Bellingham flights
Binghamton to Seattle flights
Albany to Spokane flights
Syracuse to Pasco flights
White Plains to Spokane flights
Rochester to Spokane flights
LaGuardia to Pasco flights
Binghamton to Portland flights
John F Kennedy Intl to Wenatchee flights
LaGuardia to Bellingham flights
Newark to Walla Walla flights
Newark to Wenatchee flights
Newark to Pullman flights
Elmira to Portland flights
Newark to Yakima flights
John F Kennedy Intl to Yakima flights
Buffalo to Spokane flights
Watertown to Portland flights
John F Kennedy Intl to Walla Walla flights
Buffalo to Bellingham flights
LaGuardia to Yakima flights
Niagara Falls to Portland flights
Stewart to Portland flights

Top 7 airlines flying from Buffalo to Seattle

Discover the top 7 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 octobre 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$125Average$287FlexibilityNo cancel feeOn-time62%
FrontierCheapest$155Average$280FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$328Average$473FlexibilityNo cancel feeOn-time71%
DeltaCheapest$330Average$502FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$344Average$487FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$345Average$454FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$558Average$672FlexibilityNo 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.