How long is the flight from Buffalo to Seattle?

Departing from Buffalo to Seattle will take you 9h 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 $125. Other airlines that can offer you cheap pricing are Frontier, from $150, and Delta, from $173. JetBlue is currently priced 72% 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.

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.

$160+ Flights from Buffalo to Seattle

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

Find cheap flights from Buffalo to Seattle with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Buffalo to Seattle/Tacoma Intl are usually found in October or September, booked 48 days in advance, depart on a Tuesday or Wednesday and return on a Wednesday

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 8, 2025.

Sun 12/216:45 amBUF - SEA

1 stop10h 17mAmerican Airlines

Wed 12/2412:14 amSEA - BUF

1 stop9h 14mAmerican Airlines

Deal found 12/7

$429

Thu 12/256:30 amBUF - SEA

1 stop8h 33mUnited Airlines

Tue 1/68:10 amSEA - BUF

1 stop8h 15mUnited Airlines

Deal found 12/7

$474

Wed 12/246:30 amBUF - SEA

1 stop8h 33mUnited Airlines

Wed 12/2411:15 pmSEA - BUF

1 stop7h 31mUnited Airlines

Deal found 12/7

$480

Wed 12/246:30 amBUF - SEA

1 stop8h 33mUnited Airlines

Wed 12/315:02 amSEA - BUF

2 stops12h 52mUnited Airlines

Deal found 12/7

$485

Thu 12/256:30 amBUF - SEA

1 stop8h 33mUnited Airlines

Mon 1/56:00 amSEA - BUF

1 stop9h 34mUnited Airlines

Deal found 12/7

$505

Sun 12/212:50 pmBUF - SEA

2 stops11h 22mUnited Airlines

Thu 12/2510:57 amSEA - BUF

1 stop6h 57mUnited Airlines

Deal found 12/7

$507

Wed 12/246:30 amBUF - SEA

1 stop8h 33mUnited Airlines

Tue 1/68:40 amSEA - BUF

2 stops8h 49mUnited Airlines

Deal found 12/7

$518

Wed 12/246:30 amBUF - SEA

1 stop8h 33mUnited Airlines

Thu 12/2510:57 amSEA - BUF

1 stop6h 57mUnited Airlines

Deal found 12/7

$520

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 8, 2025.

Thu 1/83:38 pmBUF - SEA

1 stop9h 47mDelta

Tue 1/2711:10 pmSEA - BUF

1 stop9h 35mDelta

Deal found 12/5

$320

Mon 1/266:20 amBUF - SEA

1 stop9h 55mSouthwest

Tue 2/36:25 amSEA - BUF

2 stops12h 30mSouthwest

Deal found 12/6

$325

Thu 1/89:55 amBUF - SEA

2 stops11h 31mUnited Airlines

Tue 1/278:40 amSEA - BUF

2 stops8h 49mUnited Airlines

Deal found 12/5

$330

Thu 1/87:30 amBUF - SEA

1 stop8h 44mAmerican Airlines

Mon 1/129:45 pmSEA - BUF

2 stops11h 23mAmerican Airlines

Deal found 12/6

$390

Mon 3/26:10 amBUF - SEA

1 stop10h 20mSouthwest

Fri 3/65:15 amSEA - BUF

1 stop7h 00mSouthwest

Deal found 12/5

$388

Tue 3/31:52 pmBUF - SEA

1 stop8h 11mUnited Airlines

Wed 3/410:55 amSEA - BUF

1 stop7h 06mUnited Airlines

Deal found 12/5

$401

Wed 2/411:51 amBUF - SEA

1 stop11h 09mDelta

Sun 2/86:05 amSEA - BUF

1 stop7h 54mDelta

Deal found 12/7

$402

Sat 1/1011:24 amBUF - SEA

2 stops12h 51mUnited Airlines

Sun 1/118:10 amSEA - BUF

1 stop8h 15mUnited Airlines

Deal found 12/7

$407

Fri 1/95:23 pmBUF - SEA

1 stop8h 20mUnited Airlines

Mon 1/127:00 amSEA - BUF

1 stop7h 40mUnited Airlines

Deal found 12/6

$411

Last-minute flights from Buffalo to Seattle
Discover last-minute flight deals from Buffalo to Seattle. Data last updated December 8, 2025 and is based on user searches.

Thu 1/83:38 pmBUF - SEA

1 stop9h 47mDelta

Tue 1/2711:10 pmSEA - BUF

1 stop9h 35mDelta

Deal found 12/5

$320

Thu 1/89:55 amBUF - SEA

2 stops14h 20mUnited Airlines

Tue 1/2710:58 amSEA - BUF

1 stop6h 31mUnited Airlines

Deal found 12/5

$325

Thu 1/812:58 pmBUF - SEA

1 stop9h 06mAmerican Airlines

Mon 1/1212:45 pmSEA - BUF

1 stop7h 56mAmerican Airlines

Deal found 12/6

$385

Fri 1/95:23 pmBUF - SEA

1 stop8h 20mUnited Airlines

Mon 1/127:00 amSEA - BUF

1 stop7h 40mUnited Airlines

Deal found 12/6

$411

Sat 1/105:43 pmBUF - SEA

1 stop7h 06mDelta

Sun 1/1111:10 pmSEA - BUF

1 stop9h 17mDelta

Deal found 12/7

$402

Sat 1/1011:24 amBUF - SEA

2 stops12h 51mUnited Airlines

Sun 1/118:10 amSEA - BUF

1 stop8h 15mUnited Airlines

Deal found 12/7

$407

Sat 1/1012:35 pmBUF - SEA

2 stops12h 45mAmerican Airlines

Sun 1/1111:12 pmSEA - BUF

2 stops9h 56mAmerican Airlines

Deal found 12/7

$412

Mon 1/2612:20 pmBUF - SEA

2 stops13h 10mSouthwest

Tue 2/36:25 amSEA - BUF

2 stops12h 35mSouthwest

Deal found 12/6

$350

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 8, 2025.

Sun 3/81:37 pmBUF - SEA

2 stops25h 53mFrontier

Deal found 12/7

$160

Mon 3/25:50 pmBUF - SEA

1 stop8h 39mAmerican Airlines

Deal found 12/5

$170

Mon 3/28:40 amBUF - SEA

2 stops12h 50mSouthwest

Deal found 12/5

$175

Wed 1/76:53 amBUF - SEA

1 stop9h 11mAmerican Airlines

Deal found 12/7

$184

Sun 3/88:17 amBUF - SEA

1 stop8h 29mUnited Airlines

Deal found 12/7

$219

Sun 3/81:37 pmBUF - SEA

3 stops29h 59mMultiple Airlines

Deal found 12/7

$223

Wed 1/710:45 amBUF - SEA

2 stops13h 27mUnited Airlines

Deal found 12/6

$239

Mon 12/226:29 pmBUF - SEA

1 stop7h 44mAmerican Airlines

Deal found 12/6

$279

Thu 12/255:41 pmBUF - SEA

1 stop8h 06mUnited Airlines

Deal found 12/6

$280

Mon 12/222:45 pmBUF - SEA

2 stops13h 10mSouthwest

Deal found 12/6

$304

Thu 12/256:10 amBUF - SEA

1 stop7h 25mDelta

Deal found 12/7

$320

Find flight deals from Buffalo to Seattle

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$298 (JetBlue)
One-way from	$160 (Kiwi.com)
Popular in	November
Cheapest in	October
Average price	$441

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

High demand for flights, 0% potential price rise

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

Thu 1/8

3:38 pm-10:25 pm

1 stop9h 47m

Seattle/Tacoma Intl

Tue 1/27

11:10 pm-11:45 am

1 stop9h 35m

$320

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Mon 1/26

6:20 am-1:15 pm

1 stop9h 55m

Seattle/Tacoma Intl

Tue 2/3

6:25 am-9:55 pm

2 stops12h 30m

$325

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Thu 1/8

9:55 am-6:26 pm

2 stops11h 31m

Seattle/Tacoma Intl

Tue 1/27

8:40 am-8:29 pm

2 stops8h 49m

$330

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Mon 3/2

6:10 am-1:30 pm

1 stop10h 20m

Seattle/Tacoma Intl

Fri 3/6

5:15 am-3:15 pm

1 stop7h 00m

$388

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Thu 1/8

7:30 am-1:14 pm

1 stop8h 44m

Seattle/Tacoma Intl

Mon 1/12

9:45 pm-12:08 pm

2 stops11h 23m

$390

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Tue 3/3

1:52 pm-7:03 pm

1 stop8h 11m

Seattle/Tacoma Intl

Wed 3/4

10:55 am-9:01 pm

1 stop7h 06m

$401

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Wed 2/4

11:51 am-8:00 pm

1 stop11h 09m

Seattle/Tacoma Intl

Sun 2/8

6:05 am-4:59 pm

1 stop7h 54m

$402

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Sat 1/10

11:24 am-9:15 pm

2 stops12h 51m

Seattle/Tacoma Intl

Sun 1/11

8:10 am-7:25 pm

1 stop8h 15m

$407

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Fri 1/9

5:23 pm-10:43 pm

1 stop8h 20m

Seattle/Tacoma Intl

Mon 1/12

7:00 am-5:40 pm

1 stop7h 40m

$411

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Sun 3/8

1:37 pm-12:30 pm

2 stops25h 53m

$160

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/7

Showing 1-10 of 20 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 $325). 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?

Unlike in the morning, when flights are generally more expensive, you can save up to 47% on flights from Buffalo to Seattle by exploring options for tickets in the evening.

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

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

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

4,254 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

4,254 reviews

Southwest

8.0

Very good

4,254 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

8,011 reviews

Southwest

8.0

Very good

4,254 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

9,089 reviews

Southwest

8.0

Very good

4,254 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

11,045 reviews

Southwest

8.0

Very good

4,254 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

3,085 reviews

Southwest

8.0

Very good

4,254 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 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 $125. Other airlines that can offer you cheap pricing are Frontier, from $150, and Delta, from $173. JetBlue is currently priced 72% 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 $325). 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$125	Average$287	FlexibilityNo cancel fee	On-time62%
Frontier	Cheapest$155	Average$280	FlexibilityNo cancel fee	On-time62%
Delta	Cheapest$318	Average$477	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$327	Average$458	FlexibilityNo cancel fee	On-time71%
Southwest	Cheapest$335	Average$443	FlexibilityNo cancel fee	On-time63%
United Airlines	Cheapest$344	Average$480	FlexibilityNo cancel fee	On-time69%

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$160+ 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 3/8. 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

Cheapflights Tip: The best prices from Buffalo to Seattle/Tacoma Intl are usually found in October or September, booked 48 days in advance, depart on a Tuesday or Wednesday and return on a Wednesday

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 8, 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 8, 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?

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

What is the cheapest day to fly 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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Alternative routes for Buffalo to 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 8, 2025.