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Cheap flights from Buffalo to Seattle from C$ 183

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 18/8. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — SEA
4 Aug — 11 Aug1
1 adult

Cheapflights Tip: The best prices from Buffalo to Seattle/Tacoma Intl are usually found in October or March, booked 69 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 30 July 2025.

Round-trip from

C$ 383

One-way from

C$ 183

Popular in

December

Cheapest in

October

Average price

C$ 629
Frontier
  • Frontier
  • 19/9-27/9
  • 2 total stops
  • 40h 35m total
  • Buffalo to Seattle
Search Deals
Frontier
  • Frontier
  • 18/8
  • 1 total stop
  • 7h 48m total
  • Buffalo to Seattle
Search Deals
Highest demand for flights based on searches. 4% potential increase in price (C$ 41 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 20 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 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 30 July 2025.

Fri 19/94:57 p.m.BUF - SEA
1 stop30h 42mFrontier
Sat 27/97:00 a.m.SEA - BUF
1 stop30h 02mFrontier
Deal found 28/7C$ 382
Sat 27/96:30 p.m.BUF - SEA
1 stop6h 46mDelta
Tue 30/96:00 a.m.SEA - BUF
1 stop9h 03mDelta
Deal found 28/7C$ 448
Wed 15/105:55 p.m.BUF - SEA
1 stop7h 35mUnited Airlines
Wed 22/105:00 a.m.SEA - BUF
2 stops8h 53mUnited Airlines
Deal found 28/7C$ 455
Tue 2/96:45 p.m.BUF - SEA
1 stop7h 50mSouthwest
Mon 8/911:10 p.m.SEA - BUF
2 stops9h 50mSouthwest
Deal found 29/7C$ 491

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 30 July 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

Fri 19/9

4:57 p.m.-8:39 p.m.

1 stop30h 42m

Seattle/Tacoma Intl

Sat 27/9

7:00 a.m.-4:02 p.m.

1 stop30h 02m

C$ 382

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Sat 27/9

6:30 p.m.-10:16 p.m.

1 stop6h 46m

Seattle/Tacoma Intl

Tue 30/9

6:00 a.m.-6:03 p.m.

1 stop9h 03m

C$ 448

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Wed 15/10

5:55 p.m.-10:30 p.m.

1 stop7h 35m

Seattle/Tacoma Intl

Wed 22/10

5:00 a.m.-4:53 p.m.

2 stops8h 53m

C$ 455

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Tue 2/9

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

1 stop7h 50m

Seattle/Tacoma Intl

Mon 8/9

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

2 stops9h 50m

C$ 491

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Mon 18/8

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

1 stop7h 48m

C$ 183

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Thu 21/8

11:45 a.m.-10:43 p.m.

1 stop13h 58m

C$ 190

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Wed 17/9

3:55 p.m.-10:20 p.m.

1 stop9h 25m

C$ 201

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Sat 13/9

7:00 a.m.-2:48 p.m.

1 stop10h 48m

C$ 223

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Wed 20/8

4:43 p.m.-11:59 p.m.

1 stop10h 16m

C$ 225

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Tue 9/9

4:05 p.m.-11:10 p.m.

2 stops10h 05m

C$ 232

Flights are sorted by cheapest round-trip flights first.

Deals found on 29/7

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 25 July 2025.

To ensure you get the cheapest price possible for a flight from Buffalo to Seattle, you should look to book at least 69 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$ 262). 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 30 July 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.

What’s the top layover airport for flights from Buffalo to Seattle?

Share of one-stop round-trip flights from Buffalo to Seattle chosen by Cheapflights users in the past 12 months, using the same layover each way.

Chicago (ORD) – chosen by Cheapflights users on 40% of one-stop itineraries from Buffalo to Seattle on Cheapflights.

What’s the cheapest layover airport for flights from Buffalo to Seattle?

Average round-trip fare for 1-stop flights from Buffalo to Seattle, chosen by Cheapflights users in the past 12 months, with the same layover each way.

Las Vegas (LAS) is the most affordable 1-stop option, with an average round-trip price of C$ 582.

What’s the fastest layover option from Buffalo to Seattle?

Shortest average travel time for 1-stop one-way flights from Buffalo to Seattle, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Flights via Las Vegas (LAS) have the shortest average one-way travel time for 1-stop routes: 3h 45m.

Which airport typically offers the quickest layover for flights from Buffalo to Seattle?

Average layover duration for 1-stop one-way flights from Buffalo to Seattle, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Chicago (MDW) offer the fastest connection on this route, with an average layover time of 1h 08m.

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 30 July 2025.
Get a feel of what it's like to fly with Alaska Airlines,Southwest, andDelta 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

Boarding

8.1

Comfort

7.8

Food

7.1

Entertainment

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Boarding

8.1

Comfort

7.8

Food

7.1

Entertainment

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.
Southwest
8.0
Very good
4,241 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Boarding

8.1

Comfort

7.8

Food

7.1

Entertainment

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.
Delta
8.0
Very good
7,980 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Boarding

8.1

Comfort

7.8

Food

7.1

Entertainment

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.
United Airlines
7.4
Good
8,896 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Boarding

8.1

Comfort

7.8

Food

7.1

Entertainment

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Boarding

8.1

Comfort

7.8

Food

7.1

Entertainment

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.

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, Frontier (C$ 383), American Airlines (C$ 447), and Delta (C$ 448) offers the cheapest pricing from Buffalo to Seattle. Frontier is priced at 40% 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 Frontier, which is currently one of the cheapest options available, starting at C$ 183. Sun Country Air flights start at C$ 190 while deals on JetBlue start at C$ 201 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$ 262). 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 Seattle?

Book flights to Seattle if you plan to visit one of these locations
Leavenworth
SeaTac
Tukwila
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.
Newark to Seattle flights
John F Kennedy Intl to Seattle flights
Buffalo to Portland flights

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 30 July 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapestC$ 469AverageC$ 894FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
SouthwestCheapestC$ 471AverageC$ 588FlexibilityNo cancel feeOn-time63%
Search Southwest flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

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?

Cheapflights simply makes it quick and affordable to book flights from Buffalo to Seattle by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

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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