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$151+ Cheap flights from Seattle to Buffalo (SEA - BUF)

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 4/21. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BUF
Apr 22 — Apr 291
Wed 4/22
Wed 4/29
1 adult, Economy
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Cheap flight deals from Seattle to Buffalo

Cheapest flights from Seattle to Buffalo
Explore the most affordable flight options available from Seattle to Buffalo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 23, 2026.

This Kiwi.com deal was found by Cheapflights users on 3/20. 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.
Mon 5/47:12 pm
SEA
-
BUF
2 stops12h 29m
Multiple Airlines
Thu 5/2811:41 am
BUF
-
SEA
1 stop13h 59m
Multiple Airlines
Deal found 3/20$363
This Kiwi.com deal was found by Cheapflights users on 3/20. 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.
Tue 4/287:12 pm
SEA
-
BUF
2 stops14h 30m
Multiple Airlines
Thu 5/2811:41 am
BUF
-
SEA
1 stop13h 59m
Multiple Airlines
Deal found 3/20$369
This Delta deal was found by Cheapflights users on 3/20. 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 4/286:00 am
SEA
-
BUF
1 stop6h 13m
Delta
Wed 6/33:52 pm
BUF
-
SEA
1 stop9h 54m
Delta
Deal found 3/20$391
This Southwest deal was found by Cheapflights users on 3/22. 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.
Wed 5/611:45 pm
SEA
-
BUF
1 stop7h 30m
Southwest
Mon 5/118:00 pm
BUF
-
SEA
1 stop7h 05m
Southwest
Deal found 3/22$392
This Southwest deal was found by Cheapflights users on 3/18. 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 5/66:00 am
SEA
-
BUF
2 stops9h 15m
Southwest
Wed 5/136:55 pm
BUF
-
SEA
1 stop8h 15m
Southwest
Deal found 3/18$396
This Kiwi.com deal was found by Cheapflights users on 3/20. 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 4/307:12 pm
SEA
-
BUF
2 stops13h 11m
Multiple Airlines
Thu 5/2811:41 am
BUF
-
SEA
1 stop13h 59m
Multiple Airlines
Deal found 3/20$397
This KAYAK deal was found by Cheapflights users on 3/22. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/1711:41 pm
SEA
-
BUF
1 stop9h 55m
JetBlue
Tue 6/231:26 pm
BUF
-
SEA
1 stop12h 20m
JetBlue
Deal found 3/22$403
This Southwest deal was found by Cheapflights users on 3/20. 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.
Mon 5/411:55 pm
SEA
-
BUF
1 stop7h 25m
Southwest
Wed 5/136:55 pm
BUF
-
SEA
1 stop8h 15m
Southwest
Deal found 3/20$406
This American Airlines deal was found by Cheapflights users on 3/21. 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.
Wed 5/67:00 am
SEA
-
BUF
1 stop7h 30m
American Airlines
Wed 5/133:01 pm
BUF
-
SEA
1 stop10h 37m
American Airlines
Deal found 3/21$407
This Kiwi.com deal was found by Cheapflights users on 3/20. 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 5/27:12 pm
SEA
-
BUF
2 stops13h 25m
Multiple Airlines
Thu 5/2811:41 am
BUF
-
SEA
1 stop13h 59m
Multiple Airlines
Deal found 3/20$408
This Southwest deal was found by Cheapflights users on 3/18. 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.
Thu 4/3011:55 pm
SEA
-
BUF
1 stop7h 20m
Southwest
Tue 5/123:10 pm
BUF
-
SEA
2 stops10h 20m
Southwest
Deal found 3/18$411

Find flight deals from Seattle to Buffalo

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Buffalo (BUF). 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 March 23, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$363
(Kiwi.com)

One-way from

$151
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$387
Provider with most accurate pricing for Seattle/Tacoma Intl-Buffalo flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Buffalo flights.
Search Deals
From Seattle/Tacoma Intl to Buffalo
Search Deals
One-way flight from Seattle/Tacoma Intl to Buffalo
Search Deals
Highest demand for flights based on searches. 20% potential increase in price ($118 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($17 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Buffalo 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 March 23, 2026.
Use the filters below to find and compare flights from Seattle to Buffalo that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

SeattleBuffalo

SEA - BUF

SEABUF

Seattle/Tacoma Intl

Wed 5/6

6:00 am-3:20 pm

1 stop6h 20m

Buffalo

Wed 5/13

6:55 pm-12:10 am

1 stop8h 15m

$391

SeattleBuffalo

SEA - BUF

SEABUF

Seattle/Tacoma Intl

Wed 4/15

6:00 am-3:20 pm

1 stop6h 20m

Buffalo

Wed 4/15

6:55 pm-12:10 am

1 stop8h 15m

$406

SeattleBuffalo

SEA - BUF

SEABUF

Seattle/Tacoma Intl

Thu 4/30

5:15 am-3:25 pm

1 stop7h 10m

Buffalo

Tue 5/12

6:55 pm-12:10 am

1 stop8h 15m

$406

SeattleBuffalo

SEA - BUF

SEABUF

Seattle/Tacoma Intl

Wed 7/22

6:15 pm-10:26 am

1 stop13h 11m

Buffalo

Thu 7/30

11:41 am-10:46 pm

1 stop14h 05m

$467

SeattleBuffalo

SEA - BUF

SEABUF

Seattle/Tacoma Intl

Mon 5/4

11:55 pm-10:20 am

1 stop7h 25m

Buffalo

Mon 5/11

4:00 pm-12:05 am

2 stops11h 05m

$482

SeattleBuffalo

SEA - BUF

SEABUF

Seattle/Tacoma Intl

Sat 5/2

12:56 pm-11:55 pm

1 stop7h 59m

Buffalo

Wed 5/6

6:00 am-2:11 pm

1 stop11h 11m

$509

SeattleBuffalo

SEA - BUF

SEABUF

Seattle/Tacoma Intl

Thu 4/30

4:00 pm-7:19 pm

1 stop24h 19m

Buffalo

Tue 6/2

4:55 pm-11:57 pm

1 stop10h 02m

$513

SeattleBuffalo

SEA - BUF

SEABUF

Seattle/Tacoma Intl

Tue 5/5

12:51 pm-11:05 pm

1 stop7h 14m

Buffalo

Wed 5/6

2:45 pm-8:53 pm

1 stop9h 08m

$517
Cheapest one-way

SeattleBuffalo

SEA - BUF

SEABUF

Seattle/Tacoma Intl

Tue 6/9

7:30 pm-8:00 am

2 stops9h 30m

$159

SeattleBuffalo

SEA - BUF

SEABUF

Seattle/Tacoma Intl

Wed 4/15

7:05 pm-9:47 am

2 stops11h 42m

$201

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/23

Showing 1-10 of 19 resultsSorted by cheapest first
1
2

Compare providers for flights from Seattle to Buffalo

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 Seattle to Buffalo in March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 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 Seattle-Buffalo flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Buffalo flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Buffalo flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-Buffalo 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 Seattle-Buffalo 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 Seattle to Buffalo

Have a flexible travel schedule? Discover the best time to fly to Buffalo from Seattle 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 Seattle to Buffalo

How far ahead should I book a flight from Seattle to Buffalo?

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Buffalo. Price data was last updated on March 13, 2026.

The best time to book flights from Seattle to Buffalo is 11 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 Seattle to Buffalo?

Currently, September is the cheapest month in which you can book a flight from Seattle to Buffalo (average of $150). Flying from Seattle to Buffalo in November is currently the most expensive (average of $269). 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 Buffalo

Get insights into the airlines that provide service to Buffalo. 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 Buffalo. Reviews last updated March 23, 2026.
See what other customers who have flown with Southwest,Delta, andUnited Airlines from Seattle to Buffalo have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,324 reviews

Crew

8.6

Entertainment

7.5

Comfort

8.0

Boarding

8.1

Overall

8.0

Food

7.0

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.
Southwest
8.0
Very good
4,324 reviews
Southwest
8.0
Very good
4,324 reviews

Crew

8.6

Entertainment

7.5

Comfort

8.0

Boarding

8.1

Overall

8.0

Food

7.0

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.
Delta
7.9
Good
8,319 reviews
Southwest
8.0
Very good
4,324 reviews

Crew

8.6

Entertainment

7.5

Comfort

8.0

Boarding

8.1

Overall

8.0

Food

7.0

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.
United Airlines
7.4
Good
9,462 reviews
Southwest
8.0
Very good
4,324 reviews

Crew

8.6

Entertainment

7.5

Comfort

8.0

Boarding

8.1

Overall

8.0

Food

7.0

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.
American Airlines
7.1
Good
11,489 reviews
Southwest
8.0
Very good
4,324 reviews

Crew

8.6

Entertainment

7.5

Comfort

8.0

Boarding

8.1

Overall

8.0

Food

7.0

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.
Frontier
5.7
Fair
3,019 reviews
Southwest
8.0
Very good
4,324 reviews

Crew

8.6

Entertainment

7.5

Comfort

8.0

Boarding

8.1

Overall

8.0

Food

7.0

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 Seattle to Buffalo. 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 Seattle to Buffalo?

    There are many flights that can get you from Seattle to Buffalo in 6h 13m. Fly via Delta or Southwest to get the fastest option. There are 2115 mi between Seattle and Buffalo. Both multi-stop and nonstop flights can be found to your destination and back.

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

    Our cheapest airline available from Seattle to Buffalo is JetBlue. Our recent data shows that you can find tickets from as low as $131 on this airline. Additional options worth looking into are Frontier and Delta, starting at $139 and $218 round-trip. JetBlue is 72% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Seattle to Buffalo one-way?

    $73 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on Sun Country Air and JetBlue, with prices starting from $116 and $131, respectively.

  • Can I find deals for flights from Seattle to Buffalo that include hotel bookings?

    Yes. In addition to deals on Seattle to Buffalo flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Buffalo?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Buffalo.

  • Can I find deals for business class flights from Seattle to Buffalo?

    Yes. Cheapflights offers flight deals from Seattle to Buffalo 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 Seattle to Buffalo?

    Currently, September is the cheapest month in which you can book a flight from Seattle to Buffalo (average of $150). Flying from Seattle to Buffalo in November is currently the most expensive (average of $269). 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
Lockport
Cheektowaga
Batavia
Williamsville
Orchard Park
Eden
Amherst
West Seneca

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.

Top 7 airlines flying from Seattle to Buffalo

Discover the top 7 airlines that operate flights from Seattle to Buffalo. 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 March 23, 2026.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$131Average$270FlexibilityNo cancel feeOn-time62%
FrontierCheapest$139Average$262FlexibilityNo cancel feeOn-time62%
DeltaCheapest$218Average$450FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$286Average$455FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$296Average$498FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$335Average$456FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$500Average$776FlexibilityNo cancel feeOn-time75%

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