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$148+ 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 7/4. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — SEA
jun. 17 — jun. 241
mar. 6/17
mar. 6/24
1 adult, Economy
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Cheapflights Tip: The best prices from Buffalo to Seattle/Tacoma Intl are usually found in October or March, 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 junio 12, 2025.

Round-trip from

$296
(American Airlines)

One-way from

$148
(Booking.com)

Popular in

December

Cheapest in

October

Average price

$446
From Buffalo to Seattle/Tacoma Intl
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One-way flight from Buffalo to Seattle/Tacoma Intl
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Highest demand for flights based on searches. 3% potential increase in price ($17 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($10 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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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 junio 12, 2025.

This American Airlines deal was found by Cheapflights users on 6/10. 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. 10/712:26 pmBUF - SEA
1 stop14h 24mAmerican Airlines
dom. 10/121:29 pmSEA - BUF
1 stop7h 25mAmerican Airlines
Deal found 6/10$296
This Frontier deal was found by Cheapflights users on 6/11. 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.
lun. 8/182:11 pmBUF - SEA
1 stop7h 48mFrontier
lun. 8/256:17 amSEA - BUF
1 stop6h 43mFrontier
Deal found 6/11$301
This Southwest deal was found by Cheapflights users on 6/11. 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.
mié. 12/106:00 amBUF - SEA
2 stops10h 25mSouthwest
mié. 12/175:40 amSEA - BUF
2 stops12h 00mSouthwest
Deal found 6/11$307
This Delta deal was found by Cheapflights users on 6/11. 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.
lun. 8/187:41 pmBUF - SEA
1 stop7h 13mDelta
jue. 8/286:00 amSEA - BUF
1 stop8h 42mDelta
Deal found 6/11$328
This Sun Country Air deal was found by Cheapflights users on 6/10. 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 Sun Country Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 7/411:29 amBUF - SEA
1 stop14h 18mSun Country Air
mié. 7/96:21 pmSEA - BUF
1 stop12h 59mSun Country Air
Deal found 6/10$330
This United Airlines deal was found by Cheapflights users on 6/10. 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.
mar. 10/710:55 amBUF - SEA
2 stops10h 07mUnited Airlines
lun. 10/1311:40 pmSEA - BUF
1 stop7h 18mUnited Airlines
Deal found 6/10$337
This Mytrip deal was found by Cheapflights users on 6/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 7/1011:17 amBUF - SEA
2 stops32h 08mMultiple Airlines
jue. 7/1711:57 pmSEA - BUF
1 stop7h 47mMultiple Airlines
Deal found 6/10$369
This Alaska Airlines deal was found by Cheapflights users on 6/10. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 9/174:27 pmBUF - SEA
1 stop8h 33mAlaska Airlines
lun. 9/2212:59 amSEA - BUF
1 stop7h 12mAlaska Airlines
Deal found 6/10$447
This JetBlue deal was found by Cheapflights users on 6/12. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 7/181:55 pmBUF - SEA
1 stop11h 09mJetBlue
lun. 7/2811:20 pmSEA - BUF
1 stop9h 36mJetBlue
Deal found 6/12$451

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 junio 12, 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

mar. 10/7

12:26 pm-11:50 pm

1 stop14h 24m

Seattle/Tacoma Intl

dom. 10/12

1:29 pm-11:54 pm

1 stop7h 25m

$296

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

lun. 8/18

2:11 pm-6:59 pm

1 stop7h 48m

Seattle/Tacoma Intl

lun. 8/25

6:17 am-4:00 pm

1 stop6h 43m

$301

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

sáb. 9/20

3:25 pm-8:30 pm

1 stop8h 05m

Seattle/Tacoma Intl

sáb. 9/27

9:10 pm-7:55 am

1 stop7h 45m

$315

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

lun. 8/18

7:41 pm-11:54 pm

1 stop7h 13m

Seattle/Tacoma Intl

jue. 8/28

6:00 am-5:42 pm

1 stop8h 42m

$328

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

vie. 7/4

11:29 am-10:47 pm

1 stop14h 18m

Seattle/Tacoma Intl

mié. 7/9

6:21 pm-10:20 am

1 stop12h 59m

$330

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

mar. 10/7

10:55 am-6:02 pm

2 stops10h 07m

Seattle/Tacoma Intl

lun. 10/13

11:40 pm-9:58 am

1 stop7h 18m

$337

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

jue. 7/10

11:17 am-4:25 pm

2 stops32h 08m

Seattle/Tacoma Intl

jue. 7/17

11:57 pm-10:44 am

1 stop7h 47m

$369

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

mié. 9/17

11:54 am-5:52 pm

1 stop8h 58m

Seattle/Tacoma Intl

mar. 9/23

12:59 am-11:11 am

1 stop7h 12m

$447

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

vie. 7/4

11:29 am-10:47 pm

1 stop14h 18m

$148

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

mié. 8/20

12:02 pm-8:21 pm

1 stop11h 19m

$149

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/9

Showing 1-10 of 15 results
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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 June 9, 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 July is currently the most expensive (average of $391). 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 junio 12, 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 in the afternoon.

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.

Rainfall in Seattle by month

Plan your trip to Seattle by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Seattle ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit Seattle when rainfall is around 0.7 in.

Temperature in Seattle by month

Plan your trip to Seattle by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Seattle, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).

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 junio 12, 2025.
Read reviews from past customers who have flown Alaska Airlines, Southwest and Delta from Buffalo to Seattle. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Overall

8.0

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Overall

8.0

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Southwest
8.0
Very good
4,287 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Overall

8.0

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Delta
8.0
Very good
7,946 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Overall

8.0

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
United Airlines
7.4
Good
8,790 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Overall

8.0

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
JetBlue
7.3
Good
2,925 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Overall

8.0

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

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.

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

    Cheapflights users have booked flights from Buffalo to Seattle round-trip from $296. Other airlines that can offer you cheap pricing are Frontier, from $301, and Southwest, from $315. American Airlines is currently priced 37% 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 Sun Country Air, which is currently one of the cheapest options available, starting at $148. Delta flights start at $149 while deals on United Airlines start at $170 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 July is currently the most expensive (average of $391). 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
SeaTac
Tukwila
Tacoma
Lakewood
Ocean Shores
Lacey
Leavenworth
Federal Way
Lynnwood
Olympia
Shoreline
Kent
Cle Elum
Centralia
Kirkland
Aberdeen
Renton
Shelton
Silverdale
Issaquah

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Buffalo to Seattle

See prices for flight routes from nearby airports that may be better suited for you.
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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 junio 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$145Average$287FlexibilityNo cancel feeOn-time62%
FrontierCheapest$166Average$280FlexibilityNo cancel feeOn-time62%
Sun Country AirCheapest$187Average$367FlexibilityNo cancel feeOn-time83%
American AirlinesCheapest$313Average$443FlexibilityNo cancel feeOn-time71%
DeltaCheapest$332Average$497FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$332Average$485FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$356Average$505FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$509Average$656FlexibilityNo cancel feeOn-time75%

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