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 5/31. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — SEA
Jun 4 — Jun 111
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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 May 5, 2026.

This American Airlines deal was found by Cheapflights users on 5/4. 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.
Tue 9/12:51 pm
BUF
-
SEA
1 stop11h 08m
American Airlines
Tue 9/85:10 am
SEA
-
BUF
1 stop9h 54m
American Airlines
Deal found 5/4$391
This Southwest deal was found by Cheapflights users on 5/4. 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 9/912:00 pm
BUF
-
SEA
2 stops11h 25m
Southwest
Tue 9/155:20 am
SEA
-
BUF
1 stop6h 55m
Southwest
Deal found 5/4$396
This American Airlines deal was found by Cheapflights users on 5/2. 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.
Wed 6/248:00 am
BUF
-
SEA
1 stop9h 15m
American Airlines
Tue 6/301:58 pm
SEA
-
BUF
1 stop7h 40m
American Airlines
Deal found 5/2$398
This United Airlines deal was found by Cheapflights users on 4/30. 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 6/33:00 pm
BUF
-
SEA
1 stop8h 46m
United Airlines
Sat 6/610:40 pm
SEA
-
BUF
1 stop8h 25m
United Airlines
Deal found 4/30$406
This American Airlines deal was found by Cheapflights users on 5/4. 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 5/305:25 am
BUF
-
SEA
1 stop9h 16m
American Airlines
Tue 6/910:27 am
SEA
-
BUF
1 stop8h 25m
American Airlines
Deal found 5/4$411
This Southwest deal was found by Cheapflights users on 5/5. 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.
Tue 6/26:55 pm
BUF
-
SEA
1 stop8h 15m
Southwest
Tue 6/97:30 pm
SEA
-
BUF
2 stops9h 30m
Southwest
Deal found 5/5$416
This Delta deal was found by Cheapflights users on 5/4. 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 6/210:32 am
BUF
-
SEA
1 stop12h 38m
Delta
Wed 6/107:15 am
SEA
-
BUF
1 stop9h 11m
Delta
Deal found 5/4$417
This CheapTicketsDeal deal was found by Cheapflights users on 5/2. 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 CheapTicketsDeal is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/196:32 pm
BUF
-
SEA
1 stop8h 10m
JetBlue
Sat 8/2911:12 pm
SEA
-
BUF
1 stop8h 45m
JetBlue
Deal found 5/2$418
This Delta deal was found by Cheapflights users on 5/4. 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.
Thu 5/283:53 pm
BUF
-
SEA
1 stop9h 52m
Delta
Sat 6/611:25 am
SEA
-
BUF
1 stop9h 54m
Delta
Deal found 5/4$421
This Kiwi.com deal was found by Cheapflights users on 5/3. 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.
Sat 8/2212:29 pm
BUF
-
SEA
2 stops24h 19m
Multiple Airlines
Sun 8/3011:59 pm
SEA
-
BUF
1 stop7h 46m
Multiple Airlines
Deal found 5/3$422
This Kiwi.com deal was found by Cheapflights users on 5/3. 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.
Wed 6/32:49 pm
BUF
-
SEA
2 stops22h 47m
Multiple Airlines
Wed 6/106:24 pm
SEA
-
BUF
1 stop13h 32m
Multiple Airlines
Deal found 5/3$425

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 May 5, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$391
(American Airlines)

One-way from

$141
(Kiwi.com)

Popular in

November

Cheapest in

October

Average price

$470
Provider with most accurate pricing for Buffalo-Seattle/Tacoma Intl flight deals.
Provider most trusted by Cheapflights users for Buffalo-Seattle/Tacoma Intl flights.
From Buffalo to Seattle/Tacoma Intl
One-way flight from Buffalo to Seattle/Tacoma Intl
High demand for flights, 1% potential price rise
Cheapest flight prices on average. 2% potential price decrease ($12 potential savings vs. average RT price).
Average for round-trip flights in May 2026

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 May 5, 2026.
Use the filters below to find and compare flights from Buffalo to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Wed 6/3

6:55 pm-12:10 am

1 stop8h 15m

Seattle/Tacoma Intl

Sat 6/6

7:35 pm-7:55 am

2 stops9h 20m

$426

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Wed 6/24

9:00 am-9:45 pm

2 stops15h 45m

Seattle/Tacoma Intl

Tue 6/30

9:25 pm-8:00 am

1 stop7h 35m

$470

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Fri 7/3

7:30 pm-11:59 pm

1 stop7h 29m

Seattle/Tacoma Intl

Tue 7/7

10:40 pm-9:41 am

1 stop8h 01m

$477
Quickest round-trip

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Fri 9/11

7:10 pm-11:30 pm

1 stop7h 20m

Seattle/Tacoma Intl

Sun 9/27

5:40 am-4:25 pm

1 stop7h 45m

$477

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Thu 8/20

5:25 pm-12:20 am

1 stop9h 55m

Seattle/Tacoma Intl

Sun 8/30

11:00 pm-12:45 pm

2 stops10h 45m

$482

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Wed 10/28

7:30 am-3:45 pm

2 stops11h 15m

Seattle/Tacoma Intl

Fri 10/30

5:00 pm-7:50 am

2 stops11h 50m

$487

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Fri 8/14

3:55 pm-10:55 pm

2 stops10h 00m

Seattle/Tacoma Intl

Sun 8/23

11:00 pm-12:45 pm

2 stops10h 45m

$487

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Sat 6/20

5:25 pm-1:10 am

2 stops10h 45m

Seattle/Tacoma Intl

Sun 6/28

6:25 pm-8:10 am

2 stops10h 45m

$504

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Tue 9/22

6:00 am-3:36 pm

2 stops12h 36m

Seattle/Tacoma Intl

Wed 9/23

12:29 pm-11:23 pm

1 stop7h 54m

$506

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Tue 6/2

7:00 am-11:38 am

1 stop7h 38m

Seattle/Tacoma Intl

Fri 6/5

11:20 pm-9:50 am

1 stop7h 30m

$514

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/3

Showing 1-10 of 20 resultsSorted by cheapest first
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 May.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice 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?

The best time to book flights from Buffalo to Seattle is 36 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, October is the cheapest month in which you can book a flight from Buffalo to Seattle (average of $329). Flying from Buffalo to Seattle in November is currently the most expensive (average of $581). 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.

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 May 5, 2026.
Peruse reviews from past customers who have flown with Southwest,Delta, andUnited 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.

Food

7.0

Comfort

8.0

Boarding

8.1

Overall

7.9

Entertainment

7.5

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

Food

7.0

Comfort

8.0

Boarding

8.1

Overall

7.9

Entertainment

7.5

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

Food

7.0

Comfort

8.0

Boarding

8.1

Overall

7.9

Entertainment

7.5

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

Food

7.0

Comfort

8.0

Boarding

8.1

Overall

7.9

Entertainment

7.5

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

Food

7.0

Comfort

8.0

Boarding

8.1

Overall

7.9

Entertainment

7.5

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

Food

7.0

Comfort

8.0

Boarding

8.1

Overall

7.9

Entertainment

7.5

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

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 47m. 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 $238. JetBlue is currently priced 68% 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. Southwest flights start at $98 while deals on JetBlue start at $127 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, October is the cheapest month in which you can book a flight from Buffalo to Seattle (average of $329). Flying from Buffalo to Seattle in November is currently the most expensive (average of $581). 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
Tacoma
Ocean Shores
Olympia
Lynnwood
Lacey
Edmonds
Leavenworth
Snoqualmie
Tumwater
Tukwila
Puyallup
Kent
Renton
Kirkland
Ellensburg
Fife
Lakewood
Issaquah
Shoreline

Browse thousands of different options on Cheapflights for your next trip

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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 May 5, 2026.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$145Average$299FlexibilityNo cancel feeOn-time62%
FrontierCheapest$150Average$277FlexibilityNo cancel feeOn-time62%
DeltaCheapest$238Average$492FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$268Average$484FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$324Average$479FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$335Average$459FlexibilityNo cancel feeOn-time63%

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