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Cheap flights from Buffalo to Seattle from C$ 218

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 13/5. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — SEA
9 Apr — 16 Apr1
1 adult

Cheapflights Tip: The best prices from Buffalo to Seattle/Tacoma Intl are usually found in October or September, 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 4 April 2025.

Round-trip from

C$ 383

One-way from

C$ 218

Popular in

July

Cheapest in

October

Average price

C$ 684
JetBlue
  • JetBlue
  • 30/4-6/5
  • 2 total stops
  • 20h 38m total
  • Buffalo to Seattle
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American Airlines
  • American Airlines
  • 13/5
  • 1 total stop
  • 8h 13m total
  • Buffalo to Seattle
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Highest demand for flights based on searches. 8% potential increase in price (C$ 94 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease (C$ 21 potential savings vs. average RT price).
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Average for round-trip flights in April 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 4 April 2025.

Wed 30/410:33 a.m.BUF - SEA
1 stop12h 35mJetBlue
Tue 6/510:40 p.m.SEA - BUF
1 stop8h 03mJetBlue
Deal found 3/4C$ 383
Tue 3/65:51 p.m.BUF - SEA
1 stop7h 51mUnited Airlines
Tue 10/612:55 p.m.SEA - BUF
1 stop7h 49mUnited Airlines
Deal found 3/4C$ 434
Tue 10/66:00 a.m.BUF - SEA
1 stop9h 10mDelta
Tue 17/67:40 a.m.SEA - BUF
1 stop7h 49mDelta
Deal found 3/4C$ 462
Sat 3/54:00 p.m.BUF - SEA
1 stop8h 59mAmerican Airlines
Sat 10/55:22 a.m.SEA - BUF
1 stop10h 20mAmerican Airlines
Deal found 3/4C$ 488
Fri 19/97:50 a.m.BUF - SEA
1 stop9h 05mSouthwest
Thu 25/99:10 p.m.SEA - BUF
1 stop7h 45mSouthwest
Deal found 3/4C$ 510
Tue 13/53:00 p.m.BUF - SEA
2 stops20h 05mAlaska Airlines
Tue 20/511:40 p.m.SEA - BUF
1 stop7h 01mAlaska Airlines
Deal found 3/4C$ 582
Sun 13/711:41 a.m.BUF - SEA
1 stop14h 09mSun Country Air
Sat 19/711:59 p.m.SEA - BUF
1 stop7h 45mSun Country Air
Deal found 4/4C$ 594

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 4 April 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

Wed 30/4

10:33 a.m.-8:08 p.m.

1 stop12h 35m

Seattle/Tacoma Intl

Tue 6/5

10:40 p.m.-9:43 a.m.

1 stop8h 03m

C$ 383

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Tue 3/6

5:51 p.m.-10:42 p.m.

1 stop7h 51m

Seattle/Tacoma Intl

Tue 10/6

12:55 p.m.-11:44 p.m.

1 stop7h 49m

C$ 434

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Tue 10/6

6:00 a.m.-12:10 p.m.

1 stop9h 10m

Seattle/Tacoma Intl

Tue 17/6

7:40 a.m.-6:29 p.m.

1 stop7h 49m

C$ 462

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Sat 3/5

4:00 p.m.-9:59 p.m.

1 stop8h 59m

Seattle/Tacoma Intl

Sat 10/5

5:22 a.m.-6:42 p.m.

1 stop10h 20m

C$ 488

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Wed 30/4

3:25 p.m.-11:50 p.m.

1 stop11h 25m

Seattle/Tacoma Intl

Sat 10/5

4:55 p.m.-10:50 a.m.

2 stops14h 55m

C$ 553

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Tue 13/5

3:00 p.m.-8:05 a.m.

2 stops20h 05m

Seattle/Tacoma Intl

Tue 20/5

11:40 p.m.-9:41 a.m.

1 stop7h 01m

C$ 582

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Tue 13/5

7:32 p.m.-12:45 a.m.

1 stop8h 13m

C$ 218

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Thu 24/4

3:52 p.m.-10:44 p.m.

1 stop9h 52m

C$ 243

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Sat 14/6

3:30 p.m.-12:30 a.m.

2 stops12h 00m

C$ 276

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Sun 1/6

12:47 p.m.-10:45 p.m.

1 stop12h 58m

C$ 280

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/4

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 28 March 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 4 April 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 4 April 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
9,836 reviews
Check prices

Crew

8.5

Boarding

8.2

Comfort

7.9

Overall

8.0

Food

7.1

Entertainment

7.1

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
9,836 reviews
Alaska Airlines
8.0
Very good
9,836 reviews
Check prices

Crew

8.5

Boarding

8.2

Comfort

7.9

Overall

8.0

Food

7.1

Entertainment

7.1

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
4,276 reviews
Alaska Airlines
8.0
Very good
9,836 reviews
Check prices

Crew

8.5

Boarding

8.2

Comfort

7.9

Overall

8.0

Food

7.1

Entertainment

7.1

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
7,901 reviews
Alaska Airlines
8.0
Very good
9,836 reviews
Check prices

Crew

8.5

Boarding

8.2

Comfort

7.9

Overall

8.0

Food

7.1

Entertainment

7.1

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
8,621 reviews
Alaska Airlines
8.0
Very good
9,836 reviews
Check prices

Crew

8.5

Boarding

8.2

Comfort

7.9

Overall

8.0

Food

7.1

Entertainment

7.1

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
2,919 reviews
Alaska Airlines
8.0
Very good
9,836 reviews
Check prices

Crew

8.5

Boarding

8.2

Comfort

7.9

Overall

8.0

Food

7.1

Entertainment

7.1

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?

    According to our current data, JetBlue (C$ 383), United Airlines (C$ 434), and Delta (C$ 462) offers the cheapest pricing from Buffalo to Seattle. JetBlue is priced at 45% 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 American Airlines, which is currently one of the cheapest options available, starting at C$ 218. Delta flights start at C$ 243 while deals on Southwest start at C$ 276 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
SeaTac
Tukwila
Marysville
Bothell
Leavenworth
Tacoma
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 5 airlines flying from Buffalo to Seattle

Discover the top 5 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 4 April 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapestC$ 361AverageC$ 530FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
DeltaCheapestC$ 427AverageC$ 563FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
SouthwestCheapestC$ 503AverageC$ 637FlexibilityNo cancel feeOn-time63%
Search Southwest flights
United AirlinesCheapestC$ 554AverageC$ 911FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Alaska AirlinesCheapestC$ 559AverageC$ 921FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines 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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