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Cheap flights from Buffalo to Seattle from C$ 204

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 20/8. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — SEA
17 Jun — 24 Jun1
1 adult

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 Friday or Monday and return on a Tuesday

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 12 June 2025.

Round-trip from

C$ 406

One-way from

C$ 204

Popular in

December

Cheapest in

October

Average price

C$ 610
Delta
  • Delta
  • 18/8-27/8
  • 2 total stops
  • 15h 20m total
  • Buffalo to Seattle
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Delta
  • Delta
  • 20/8
  • 1 total stop
  • 11h 19m total
  • Buffalo to Seattle
Search Deals
Highest demand for flights based on searches. 3% potential increase in price (C$ 33 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 18 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 12 June 2025.

Mon 18/83:58 p.m.BUF - SEA
1 stop9h 09mDelta
Wed 27/89:25 a.m.SEA - BUF
1 stop6h 11mDelta
Deal found 11/6C$ 406
Wed 17/96:45 p.m.BUF - SEA
1 stop7h 50mSouthwest
Tue 23/911:10 p.m.SEA - BUF
2 stops9h 50mSouthwest
Deal found 10/6C$ 413
Fri 4/711:29 a.m.BUF - SEA
1 stop14h 18mSun Country Air
Wed 9/76:21 p.m.SEA - BUF
1 stop12h 59mSun Country Air
Deal found 10/6C$ 451
Tue 7/1010:55 a.m.BUF - SEA
2 stops10h 07mUnited Airlines
Mon 13/1011:40 p.m.SEA - BUF
1 stop7h 18mUnited Airlines
Deal found 10/6C$ 461
Fri 8/86:29 a.m.BUF - SEA
1 stop9h 06mAmerican Airlines
Sun 17/85:24 a.m.SEA - BUF
1 stop10h 09mAmerican Airlines
Deal found 10/6C$ 536
Wed 17/911:54 a.m.BUF - SEA
1 stop8h 58mAlaska Airlines
Tue 23/912:59 a.m.SEA - BUF
1 stop7h 12mAlaska Airlines
Deal found 10/6C$ 611
Fri 18/71:55 p.m.BUF - SEA
1 stop11h 09mJetBlue
Mon 28/711:20 p.m.SEA - BUF
1 stop9h 36mJetBlue
Deal found 12/6C$ 617
Fri 11/72:11 p.m.BUF - SEA
1 stop7h 48mMultiple Airlines
Sun 10/811:59 p.m.SEA - BUF
1 stop7h 45mMultiple Airlines
Deal found 11/6C$ 644

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 629,999 searches. Data last updated 12 June 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

Mon 18/8

3:58 p.m.-10:07 p.m.

1 stop9h 09m

Seattle/Tacoma Intl

Wed 27/8

9:25 a.m.-6:36 p.m.

1 stop6h 11m

C$ 406

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Wed 17/9

6:45 p.m.-11:35 p.m.

1 stop7h 50m

Seattle/Tacoma Intl

Tue 23/9

11:10 p.m.-12:00 p.m.

2 stops9h 50m

C$ 413

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Fri 4/7

11:29 a.m.-10:47 p.m.

1 stop14h 18m

Seattle/Tacoma Intl

Wed 9/7

6:21 p.m.-10:20 a.m.

1 stop12h 59m

C$ 451

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Tue 7/10

10:55 a.m.-6:02 p.m.

2 stops10h 07m

Seattle/Tacoma Intl

Mon 13/10

11:40 p.m.-9:58 a.m.

1 stop7h 18m

C$ 461

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Fri 8/8

6:29 a.m.-12:35 p.m.

1 stop9h 06m

Seattle/Tacoma Intl

Sun 17/8

5:24 a.m.-6:33 p.m.

1 stop10h 09m

C$ 536

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Wed 17/9

11:54 a.m.-5:52 p.m.

1 stop8h 58m

Seattle/Tacoma Intl

Tue 23/9

12:59 a.m.-11:11 a.m.

1 stop7h 12m

C$ 611

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Fri 18/7

1:55 p.m.-10:04 p.m.

1 stop11h 09m

Seattle/Tacoma Intl

Mon 28/7

11:20 p.m.-11:56 a.m.

1 stop9h 36m

C$ 617

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Fri 11/7

2:11 p.m.-6:59 p.m.

1 stop7h 48m

Seattle/Tacoma Intl

Sun 10/8

11:59 p.m.-10:44 a.m.

1 stop7h 45m

C$ 644

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Wed 20/8

12:02 p.m.-8:21 p.m.

1 stop11h 19m

C$ 204

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Mon 21/7

11:47 a.m.-10:47 p.m.

1 stop14h 00m

C$ 223

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/6

Showing 1-10 of 12 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 9 June 2025.

To ensure you get the cheapest price possible for a flight from Buffalo to Seattle, you should look to book at least 25 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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 C$ 261). Flying from Buffalo to Seattle in December is currently the most expensive (average of C$ 353). 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 12 June 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 41% on flights from Buffalo to Seattle by exploring options for tickets in the evening.

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 18.0 - 168.0 mm per month. November is typically the wettest month, when rainfall can reach 168.0 mm. July is typically the driest time to visit Seattle when rainfall is around 18.0 mm.

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 19.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 5.0 C).

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 12 June 2025.
Get a feel of what it's like to fly with Alaska Airlines, Southwest and Delta from Buffalo to Seattle by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Overall

8.0

Entertainment

7.1

Comfort

7.8

Food

7.1

Boarding

8.1

Crew

8.5

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
Check prices

Overall

8.0

Entertainment

7.1

Comfort

7.8

Food

7.1

Boarding

8.1

Crew

8.5

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
Check prices

Overall

8.0

Entertainment

7.1

Comfort

7.8

Food

7.1

Boarding

8.1

Crew

8.5

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
Check prices

Overall

8.0

Entertainment

7.1

Comfort

7.8

Food

7.1

Boarding

8.1

Crew

8.5

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
Check prices

Overall

8.0

Entertainment

7.1

Comfort

7.8

Food

7.1

Boarding

8.1

Crew

8.5

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
Check prices

Overall

8.0

Entertainment

7.1

Comfort

7.8

Food

7.1

Boarding

8.1

Crew

8.5

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?

    According to our current data, Delta (C$ 406), Southwest (C$ 413), and Sun Country Air (C$ 451) offers the cheapest pricing from Buffalo to Seattle. Delta is priced at 37% lower than the current average price of a flight leaving 3 months from now.

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

    To fly one-way, consider booking your trip with Delta, which is currently one of the cheapest options available, starting at C$ 204. Sun Country Air flights start at C$ 223 while deals on United Airlines start at C$ 232 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 C$ 261). Flying from Buffalo to Seattle in December is currently the most expensive (average of C$ 353). 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

Travelling to a place near Buffalo?

Book flights to Buffalo if you plan to visit one of these locations
Leavenworth
Tukwila
SeaTac
Tacoma
Marysville
Bothell
Renton
Olympia
Lynnwood

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 2 airlines flying from Buffalo to Seattle

Discover the top 2 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 629,999 searches. Data last updated 12 June 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapestC$ 465AverageC$ 881FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
SouthwestCheapestC$ 494AverageC$ 617FlexibilityNo cancel feeOn-time63%
Search Southwest flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Buffalo to Seattle?

Cheapflights makes it easy to find Buffalo to Seattle flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Buffalo to Seattle?

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Can Cheapflights find flights from Buffalo to Seattle with no change fees?

Yes, we can. To see specific flights from Buffalo to Seattle with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Buffalo to Seattle become cheaper?

Not ready to book yet? You can track prices for flights from Buffalo to Seattle on Cheapflights with our Price Alert feature and get notified when better prices are available.

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