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$124+ 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 9/10. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BUF
ago. 12 — ago. 191
mar. 8/12
mar. 8/19
1 adult, Economy
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Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Buffalo are usually found in September or October, booked 58 days in advance, depart on a Wednesday or Tuesday and return on a Tuesday

Cheap 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 agosto 7, 2025.

Round-trip from

$228
(Southwest)

One-way from

$124
(American Airlines)

Popular in

December

Cheapest in

September

Average price

$490
From Seattle/Tacoma Intl to Buffalo
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One-way flight from Seattle/Tacoma Intl to Buffalo
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Highest demand for flights based on searches. 7% potential increase in price ($39 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($13 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find 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 agosto 7, 2025.

This American Airlines deal was found by Cheapflights users on 8/5. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 9/205:26 amSEA - BUF
1 stop8h 20mAmerican Airlines
sáb. 9/277:35 amBUF - SEA
1 stop12h 54mAmerican Airlines
Deal found 8/5$253
This American Airlines deal was found by Cheapflights users on 8/5. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 10/2212:34 amSEA - BUF
1 stop13h 23mAmerican Airlines
sáb. 10/2511:11 amBUF - SEA
1 stop12h 35mAmerican Airlines
Deal found 8/5$254
This Southwest deal was found by Cheapflights users on 8/7. 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.
lun. 9/2211:10 pmSEA - BUF
2 stops9h 50mSouthwest
mar. 9/306:50 amBUF - SEA
1 stop7h 20mSouthwest
Deal found 8/7$255
This United Airlines deal was found by Cheapflights users on 8/7. 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.
jue. 9/411:54 pmSEA - BUF
1 stop6h 59mUnited Airlines
jue. 9/115:54 pmBUF - SEA
1 stop7h 26mUnited Airlines
Deal found 8/7$269
This American Airlines deal was found by Cheapflights users on 8/7. 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.
jue. 10/912:34 amSEA - BUF
1 stop13h 23mAmerican Airlines
mar. 10/1411:11 amBUF - SEA
1 stop16h 16mAmerican Airlines
Deal found 8/7$270
This United Airlines deal was found by Cheapflights users on 8/5. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 9/207:00 amSEA - BUF
1 stop6h 52mUnited Airlines
sáb. 9/271:14 pmBUF - SEA
2 stops11h 10mUnited Airlines
Deal found 8/5$274
This Frontier deal was found by Cheapflights users on 8/6. 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.
vie. 9/56:12 amSEA - BUF
1 stop6h 50mFrontier
vie. 9/194:57 pmBUF - SEA
1 stop10h 33mFrontier
Deal found 8/6$278
This American Airlines deal was found by Cheapflights users on 8/5. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 8/266:10 amSEA - BUF
1 stop12h 52mAmerican Airlines
sáb. 8/305:45 pmBUF - SEA
1 stop8h 33mAmerican Airlines
Deal found 8/5$283
This FlightHub deal was found by Cheapflights users on 8/5. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 8/147:48 pmSEA - BUF
1 stop14h 28mFrontier
vie. 8/224:55 pmBUF - SEA
1 stop10h 39mFrontier
Deal found 8/5$285
This American Airlines deal was found by Cheapflights users on 8/6. 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.
jue. 11/135:24 amSEA - BUF
1 stop7h 53mAmerican Airlines
dom. 11/1611:23 amBUF - SEA
1 stop14h 55mAmerican Airlines
Deal found 8/6$286

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 agosto 7, 2025.
Use the filters below to find and compare flights from Seattle to Buffalo that are best for you.

Fly from

Seattle

Fly to

Buffalo

Route

Depart

Return

Price

SeattleBuffalo

SEA - BUF

SEABUF

Seattle/Tacoma Intl

sáb. 9/20

5:26 am-4:46 pm

1 stop8h 20m

Buffalo

sáb. 9/27

7:35 am-5:29 pm

1 stop12h 54m

$253

SeattleBuffalo

SEA - BUF

SEABUF

Seattle/Tacoma Intl

mié. 10/22

12:34 am-4:57 pm

1 stop13h 23m

Buffalo

sáb. 10/25

11:11 am-8:46 pm

1 stop12h 35m

$254

SeattleBuffalo

SEA - BUF

SEABUF

Seattle/Tacoma Intl

lun. 9/22

11:10 pm-12:00 pm

2 stops9h 50m

Buffalo

mar. 9/30

6:50 am-11:10 am

1 stop7h 20m

$255

SeattleBuffalo

SEA - BUF

SEABUF

Seattle/Tacoma Intl

jue. 9/4

11:54 pm-9:53 am

1 stop6h 59m

Buffalo

jue. 9/11

5:54 pm-10:20 pm

1 stop7h 26m

$269

SeattleBuffalo

SEA - BUF

SEABUF

Seattle/Tacoma Intl

jue. 10/9

12:34 am-4:57 pm

1 stop13h 23m

Buffalo

mar. 10/14

11:11 am-12:27 am

1 stop16h 16m

$270

SeattleBuffalo

SEA - BUF

SEABUF

Seattle/Tacoma Intl

sáb. 9/20

7:00 am-4:52 pm

1 stop6h 52m

Buffalo

sáb. 9/27

1:14 pm-9:24 pm

2 stops11h 10m

$274

SeattleBuffalo

SEA - BUF

SEABUF

Seattle/Tacoma Intl

vie. 9/5

6:12 am-4:02 pm

1 stop6h 50m

Buffalo

vie. 9/19

4:57 pm-12:30 am

1 stop10h 33m

$278

SeattleBuffalo

SEA - BUF

SEABUF

Seattle/Tacoma Intl

mar. 8/26

6:10 am-10:02 pm

1 stop12h 52m

Buffalo

sáb. 8/30

5:45 pm-11:18 pm

1 stop8h 33m

$283

SeattleBuffalo

SEA - BUF

SEABUF

Seattle/Tacoma Intl

jue. 8/21

4:40 pm-4:00 pm

1 stop20h 20m

Buffalo

lun. 8/25

4:55 pm-12:34 am

1 stop10h 39m

$285

SeattleBuffalo

SEA - BUF

SEABUF

Seattle/Tacoma Intl

jue. 11/13

5:24 am-4:17 pm

1 stop7h 53m

Buffalo

dom. 11/16

11:23 am-11:18 pm

1 stop14h 55m

$286

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/6

Showing 1-10 of 21 results
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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 August 1, 2025.

The best time to book flights from Seattle to Buffalo is 58 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, January is the cheapest month in which you can book a flight from Seattle to Buffalo (average of $256). Flying from Seattle to Buffalo in December is currently the most expensive (average of $337). 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 SEA to BUF?

Find hourly flight availability from Seattle to Buffalo. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated agosto 7, 2025.

One of the essential ways to save on airfare from Seattle to Buffalo is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the afternoon could potentially save you up to 15% on airfare.

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

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

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

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 agosto 7, 2025.
See what other customers who have flown with Alaska Airlines, Southwest, and Delta 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.
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Entertainment

7.1

Comfort

7.8

Boarding

8.1

Overall

8.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Entertainment

7.1

Comfort

7.8

Boarding

8.1

Overall

8.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Southwest
8.0
Very good
4,247 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Entertainment

7.1

Comfort

7.8

Boarding

8.1

Overall

8.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Delta
8.0
Very good
7,987 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Entertainment

7.1

Comfort

7.8

Boarding

8.1

Overall

8.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
United Airlines
7.4
Good
8,916 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Entertainment

7.1

Comfort

7.8

Boarding

8.1

Overall

8.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Entertainment

7.1

Comfort

7.8

Boarding

8.1

Overall

8.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

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.

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

    Our cheapest airline available from Seattle to Buffalo is American Airlines. Our recent data shows that you can find tickets from as low as $253 on this airline. An additional option worth looking into is Southwest, starting at $255. American Airlines is 47% 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?

    $124 is the cheapest one-way deal found within the past few days, from American Airlines. You may also be able to find cheap deals on Delta and Frontier, with prices starting from $135 and $137, 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, January is the cheapest month in which you can book a flight from Seattle to Buffalo (average of $256). Flying from Seattle to Buffalo in December is currently the most expensive (average of $337). 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
Orchard Park
Lockport
Batavia
Williamsville
Eden
Amherst
West Seneca

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Alternative routes for Seattle to Buffalo

See prices for flight routes from nearby airports that may be better suited for you.
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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 agosto 7, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$159Average$252FlexibilityNo cancel feeOn-time62%
JetBlueCheapest$220Average$319FlexibilityNo cancel feeOn-time62%
DeltaCheapest$326Average$488FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$341Average$476FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$342Average$468FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$342Average$538FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$445Average$606FlexibilityNo cancel feeOn-time75%

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