How long is the flight from Buffalo to Seattle?

Departing from Buffalo to Seattle will take you 9h 08m. 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 $173. 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. JetBlue flights start at $125 while deals on American Airlines start at $138 one-way.

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.

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).

What are the most popular airlines that fly from Buffalo to Seattle?

Before booking your flight from Buffalo to Seattle check out the most popular airlines for this route: American Airlines, United Airlines or Delta.

What is the cheapest time of day to fly from BUF to SEA?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Buffalo to Seattle as you normally would.

Most accurate provider : When it comes to deals on Buffalo-Seattle flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Buffalo-Seattle flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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.

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.

$146+ Flights from Buffalo to Seattle

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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 December 28, 2025.

Wed 12/317:48 pmBUF - SEA

2 stops17h 07mUnited Airlines

Fri 1/21:55 pmSEA - BUF

2 stops20h 29mUnited Airlines

Deal found 12/27

$1,041

Wed 12/312:05 pmBUF - SEA

1 stop11h 25mSouthwest

Fri 1/26:15 amSEA - BUF

1 stop8h 10mSouthwest

Deal found 12/27

$1,067

Best flights from Buffalo to Seattle
Discover carefully curated flight deals from Buffalo to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 28, 2025.

Wed 4/2912:25 pmBUF - SEA

1 stop11h 28mJetBlue

Wed 5/611:59 pmSEA - BUF

1 stop8h 30mJetBlue

Deal found 12/27

$263

Sat 1/172:49 pmBUF - SEA

1 stop9h 08mUnited Airlines

Sun 1/188:10 amSEA - BUF

1 stop8h 15mUnited Airlines

Deal found 12/27

$301

Wed 2/183:39 pmBUF - SEA

1 stop9h 43mDelta

Sat 2/289:55 pmSEA - BUF

1 stop10h 14mDelta

Deal found 12/27

$334

Wed 3/412:20 pmBUF - SEA

2 stops13h 10mSouthwest

Tue 3/1011:00 amSEA - BUF

1 stop10h 15mSouthwest

Deal found 12/26

$364

Tue 5/1212:25 pmBUF - SEA

1 stop11h 28mJetBlue

Sun 5/1711:30 amSEA - BUF

1 stop8h 27mJetBlue

Deal found 12/25

$295

Wed 2/185:44 pmBUF - SEA

1 stop7h 21mDelta

Sun 2/226:00 amSEA - BUF

1 stop13h 57mDelta

Deal found 12/27

$344

Sat 5/212:25 pmBUF - SEA

1 stop11h 28mJetBlue

Sun 5/1011:30 amSEA - BUF

1 stop8h 27mJetBlue

Deal found 12/26

$330

Tue 2/2412:05 pmBUF - SEA

1 stop9h 38mDelta

Wed 2/259:55 pmSEA - BUF

1 stop10h 14mDelta

Deal found 12/27

$359

Sat 5/1612:25 pmBUF - SEA

1 stop11h 28mJetBlue

Tue 5/2611:30 amSEA - BUF

1 stop8h 27mJetBlue

Deal found 12/26

$332

Mon 2/237:41 pmBUF - SEA

1 stop18h 24mDelta

Wed 2/257:10 amSEA - BUF

1 stop8h 50mDelta

Deal found 12/27

$361

Fri 2/207:41 pmBUF - SEA

1 stop18h 12mDelta

Sat 2/286:00 amSEA - BUF

1 stop7h 59mDelta

Deal found 12/27

$365

Last-minute flights from Buffalo to Seattle
Discover last-minute flight deals from Buffalo to Seattle. Data last updated December 28, 2025 and is based on user searches.

Sat 1/172:49 pmBUF - SEA

1 stop9h 08mUnited Airlines

Sun 1/188:10 amSEA - BUF

1 stop8h 15mUnited Airlines

Deal found 12/27

$301

Sat 1/1711:50 amBUF - SEA

2 stops13h 00mAmerican Airlines

Sun 1/1812:45 pmSEA - BUF

1 stop7h 56mAmerican Airlines

Deal found 12/27

$306

Sat 1/1712:58 pmBUF - SEA

1 stop9h 06mAmerican Airlines

Mon 1/192:04 pmSEA - BUF

1 stop6h 44mAmerican Airlines

Deal found 12/27

$343

Sun 1/186:20 amBUF - SEA

1 stop9h 55mSouthwest

Tue 1/278:45 amSEA - BUF

1 stop10h 15mSouthwest

Deal found 12/25

$330

Sun 1/189:55 amBUF - SEA

2 stops11h 31mUnited Airlines

Tue 1/278:40 amSEA - BUF

2 stops8h 49mUnited Airlines

Deal found 12/25

$340

Fri 1/306:20 amBUF - SEA

1 stop9h 55mSouthwest

Wed 2/46:45 amSEA - BUF

1 stop6h 35mSouthwest

Deal found 12/26

$398

One-way flights from Buffalo to Seattle
Search for one-way flight options from Buffalo to Seattle. Find affordable one-way fares based on user searches. Data last updated December 28, 2025.

Mon 3/169:25 pmBUF - SEA

2 stops46h 44mFrontier

Deal found 12/27

$146

Wed 1/2112:58 pmBUF - SEA

1 stop9h 06mAmerican Airlines

Deal found 12/25

$180

Thu 2/57:59 pmBUF - SEA

3 stops42h 40mMultiple Airlines

Deal found 12/27

$188

Thu 2/56:53 amBUF - SEA

1 stop9h 24mAmerican Airlines

Deal found 12/27

$193

Thu 2/56:10 amBUF - SEA

2 stops15h 30mSouthwest

Deal found 12/27

$198

Mon 3/169:25 pmBUF - SEA

3 stops46h 44mMultiple Airlines

Deal found 12/27

$201

Mon 3/167:56 pmBUF - SEA

1 stop17h 49mDelta

Deal found 12/27

$202

Fri 2/201:29 pmBUF - SEA

2 stops25h 32mFrontier

Deal found 12/27

$204

Fri 2/201:29 pmBUF - SEA

3 stops29h 53mMultiple Airlines

Deal found 12/27

$214

Fri 2/205:50 pmBUF - SEA

1 stop8h 39mAmerican Airlines

Deal found 12/27

$219

Fri 1/238:30 amBUF - SEA

2 stops32h 28mUnited Airlines

Deal found 12/25

$244

Find flight deals from Buffalo to Seattle

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$257 (Priceline)
One-way from	$146 (Kiwi.com)
Popular in	November
Cheapest in	October
Average price	$487

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. 1% potential increase in price ($7 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($12 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Wed 4/29

12:25 pm-8:53 pm

1 stop11h 28m

Seattle/Tacoma Intl

Wed 5/6

11:59 pm-11:29 am

1 stop8h 30m

$263

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Tue 5/12

12:25 pm-8:53 pm

1 stop11h 28m

Seattle/Tacoma Intl

Sun 5/17

11:30 am-10:57 pm

1 stop8h 27m

$295

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Sat 1/17

2:49 pm-8:57 pm

1 stop9h 08m

Seattle/Tacoma Intl

Sun 1/18

8:10 am-7:25 pm

1 stop8h 15m

$301

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Sat 5/2

12:25 pm-8:53 pm

1 stop11h 28m

Seattle/Tacoma Intl

Sun 5/10

11:30 am-10:57 pm

1 stop8h 27m

$330

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Sat 5/16

12:25 pm-8:53 pm

1 stop11h 28m

Seattle/Tacoma Intl

Tue 5/26

11:30 am-10:57 pm

1 stop8h 27m

$332

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Wed 2/18

3:39 pm-10:22 pm

1 stop9h 43m

Seattle/Tacoma Intl

Sat 2/28

9:55 pm-11:09 am

1 stop10h 14m

$334

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Wed 2/18

5:44 pm-10:05 pm

1 stop7h 21m

Seattle/Tacoma Intl

Sun 2/22

6:00 am-10:57 pm

1 stop13h 57m

$344

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Tue 2/24

12:05 pm-6:43 pm

1 stop9h 38m

Seattle/Tacoma Intl

Wed 2/25

9:55 pm-11:09 am

1 stop10h 14m

$359

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Mon 2/23

7:41 pm-11:05 am

1 stop18h 24m

Seattle/Tacoma Intl

Wed 2/25

7:10 am-7:00 pm

1 stop8h 50m

$361

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Wed 3/4

12:20 pm-10:30 pm

2 stops13h 10m

Seattle/Tacoma Intl

Tue 3/10

11:00 am-12:15 am

1 stop10h 15m

$364

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/27

Showing 1-10 of 22 results

Compare providers for flights from Buffalo to Seattle

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Buffalo to Seattle in December.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy2 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*1 star
eDreams	Price Accuracy3 stars	Trust Score*3 stars
Cheapflightsfares	Price Accuracy3 stars	Trust Score*2 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 Buffalo-Seattle flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Buffalo-Seattle flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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 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 $326). 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 Seattle

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

4,256 reviews

Reviews

1 / 20

2.0

Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Southwest

8.0

Very good

4,256 reviews

Southwest

8.0

Very good

4,256 reviews

Reviews

1 / 20

2.0

Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Delta

7.9

Good

8,019 reviews

Southwest

8.0

Very good

4,256 reviews

Reviews

1 / 20

2.0

Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

United Airlines

7.4

Good

9,113 reviews

Southwest

8.0

Very good

4,256 reviews

Reviews

1 / 20

2.0

Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

American Airlines

7.2

Good

11,072 reviews

Southwest

8.0

Very good

4,256 reviews

Reviews

1 / 20

2.0

Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Frontier

5.8

Fair

3,065 reviews

Southwest

8.0

Very good

4,256 reviews

Reviews

1 / 20

2.0

Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Related info for your journey

How long is the flight from Buffalo to Seattle?
Departing from Buffalo to Seattle will take you 9h 08m. 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 $173. 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. JetBlue flights start at $125 while deals on American Airlines start at $138 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, 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 $326). 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

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Other flights to Seattle

Top 6 airlines flying from Buffalo to Seattle

Airline	Cheapest	Average	Flexibility	On-time
JetBlue	Cheapest$145	Average$287	FlexibilityNo cancel fee	On-time62%
Frontier	Cheapest$155	Average$280	FlexibilityNo cancel fee	On-time62%
Delta	Cheapest$318	Average$473	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$327	Average$455	FlexibilityNo cancel fee	On-time71%
Southwest	Cheapest$335	Average$444	FlexibilityNo cancel fee	On-time63%
United Airlines	Cheapest$344	Average$481	FlexibilityNo cancel fee	On-time69%

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$146+ 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 3/16. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Buffalo to Seattle with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Buffalo to Seattle

Cheapest flights from Buffalo to SeattleExplore 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 December 28, 2025.

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 December 28, 2025.

Find flight deals from Buffalo to Seattle

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

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

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 December.

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.

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?

What is the cheapest month to book a flight from Buffalo to Seattle?

Reviews of airlines servicing Seattle

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.

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?

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

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

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

How can I find direct flights from Buffalo to Seattle?

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

What is the cheapest month to book a flight from Buffalo to Seattle?

Traveling to a place near Seattle?

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Top 6 airlines flying from Buffalo to Seattle

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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 December 28, 2025.