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Cheap flights from Buffalo to Seattle from C$ 226

BUF — SEA
2 Dec — 9 Dec1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Buffalo to Seattle

Enter your travel dates to find the best prices.

Cheapest flights from Buffalo to Seattle

Wed 25/117:25 p.m. -
1 stop8h 55m
Wed 2/129:25 a.m. -
1 stop8h 25m
Deal found 28/10C$ 454
Wed 25/115:58 p.m. -
1 stop8h 09m
Wed 2/125:05 a.m. -
2 stops8h 52m
Deal found 28/10C$ 461
Fri 20/116:35 a.m. -
1 stop7h 34m
Fri 27/119:45 a.m. -
1 stop6h 11m
Deal found 29/10C$ 510
Thu 24/126:55 p.m. -
1 stop7h 40m
Tue 29/1212:15 a.m. -
1 stop6h 50m
Deal found 30/10C$ 527
Wed 2/1212:45 p.m. -
2 stops13h 05m
Sat 5/121:05 p.m. -
1 stop6h 20m
Deal found 30/10C$ 534
Fri 25/126:00 a.m. -
1 stop7h 44m
Wed 6/111:10 p.m. -
1 stop8h 29m
Deal found 28/10C$ 549
Tue 1/126:55 p.m. -
1 stop7h 40m
Fri 4/125:40 a.m. -
2 stops12h 10m
Deal found 28/10C$ 569
Sat 21/113:20 p.m. -
1 stop10h 40m
Fri 4/121:36 p.m. -
1 stop7h 25m
Deal found 31/10C$ 570
Sun 22/116:35 a.m. -
1 stop7h 34m
Wed 2/1210:40 p.m. -
1 stop9h 25m
Deal found 31/10C$ 576
Mon 21/122:40 p.m. -
1 stop14h 05m
Mon 28/1212:15 a.m. -
1 stop6h 50m
Deal found 28/10C$ 581

Find flight deals from Buffalo to Seattle

Round-trip from

C$ 454

One-way from

C$ 226

Popular in

April

Cheapest in

February

Average price

C$ 676
Southwest
  • Southwest
  • 25/11-2/12
  • 2 total stops
  • 17h 20m total
  • Buffalo to Seattle
Search Deals
Delta
  • Delta
  • 14/12-31/12
  • 1 total stop
  • 11h 38m total
  • Buffalo to Seattle
Search Deals
High demand for flights, 0% potential price rise
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 21 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2026
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Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BuffaloSeattle

BUF Buffalo - SEA Seattle/Tacoma Intl

BUFSEA

Buffalo

Mon 14/12

6:00 a.m.-2:38 p.m.

1 stop11h 38m

Seattle/Tacoma Intl

Wed 31/12

12:00 a.m.-3:00 a.m.

Nonstop0h 00m

C$ 226

BuffaloSeattle

BUF Buffalo - SEA Seattle/Tacoma Intl

BUFSEA

Buffalo

Mon 11/1

7:45 a.m.-1:10 p.m.

1 stop8h 25m

Seattle/Tacoma Intl

Wed 31/12

12:00 a.m.-3:00 a.m.

Nonstop0h 00m

C$ 264

BuffaloSeattle

BUF Buffalo - SEA Seattle/Tacoma Intl

BUFSEA

Buffalo

Wed 6/1

3:53 p.m.-10:21 p.m.

1 stop9h 28m

Seattle/Tacoma Intl

Wed 31/12

12:00 a.m.-3:00 a.m.

Nonstop0h 00m

C$ 264

BuffaloSeattle

BUF Buffalo - SEA Seattle/Tacoma Intl

BUFSEA

Buffalo

Thu 7/1

9:55 a.m.-6:12 p.m.

2 stops11h 17m

Seattle/Tacoma Intl

Wed 31/12

12:00 a.m.-3:00 a.m.

Nonstop0h 00m

C$ 271

BuffaloSeattle

BUF Buffalo - SEA Seattle/Tacoma Intl

BUFSEA

Buffalo

Thu 7/1

3:53 p.m.-10:21 p.m.

1 stop9h 28m

Seattle/Tacoma Intl

Wed 31/12

12:00 a.m.-3:00 a.m.

Nonstop0h 00m

C$ 275

BuffaloSeattle

BUF Buffalo - SEA Seattle/Tacoma Intl

BUFSEA

Buffalo

Sun 6/12

4:55 p.m.-11:05 p.m.

1 stop9h 10m

Seattle/Tacoma Intl

Wed 31/12

12:00 a.m.-3:00 a.m.

Nonstop0h 00m

C$ 313

BuffaloSeattle

BUF Buffalo - SEA Seattle/Tacoma Intl

BUFSEA

Buffalo

Sun 10/1

8:15 a.m.-5:40 p.m.

2 stops12h 25m

Seattle/Tacoma Intl

Wed 31/12

12:00 a.m.-3:00 a.m.

Nonstop0h 00m

C$ 320

BuffaloSeattle

BUF Buffalo - SEA Seattle/Tacoma Intl

BUFSEA

Buffalo

Mon 14/12

10:30 a.m.-11:44 p.m.

3 stops16h 14m

Seattle/Tacoma Intl

Wed 31/12

12:00 a.m.-3:00 a.m.

Nonstop0h 00m

C$ 333

BuffaloSeattle

BUF Buffalo - SEA Seattle/Tacoma Intl

BUFSEA

Buffalo

Thu 25/3

6:00 a.m.-1:15 p.m.

1 stop10h 15m

Seattle/Tacoma Intl

Wed 31/12

12:00 a.m.-3:00 a.m.

Nonstop0h 00m

C$ 355
Quickest round-trip

BuffaloSeattle

BUF Buffalo - SEA Seattle/Tacoma Intl

BUFSEA

Buffalo

Mon 8/3

7:45 p.m.-12:35 a.m.

1 stop7h 50m

Seattle/Tacoma Intl

Wed 31/12

12:00 a.m.-3:00 a.m.

Nonstop0h 00m

C$ 355

Flights are sorted by cheapest round-trip flights first.

Deals found on 29/10

Showing 1-10 of 21 resultsSorted by cheapest first
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3

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

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?

To ensure you get the cheapest price possible for a flight from Buffalo to Seattle, you should look to book at least 46 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, February is the cheapest month in which you can book a flight from Buffalo to Seattle (average of C$ 536). Flying from Buffalo to Seattle in April is currently the most expensive (average of C$ 863). 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.

How much does it cost to fly round-trip from Buffalo to Seattle?

Airfare is below average for this route at the moment.

Buffalo to Seattle flights typically cost between C$ 588 and C$ 710 in November.
The cheapest round-trip price found within the last 5 days was C$ 454 on Southwest (25 Nov-2 Dec).

Reviews of airlines servicing Seattle

Get a feel of what it's like to fly with 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.
Southwest
8.0
Very good
4,220 reviews
Check prices

Comfort

8.0

Boarding

8.1

Entertainment

7.5

Food

7.0

Crew

8.6

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Patricia,Oct 2026

DAL - TPA

I love flying southwest, Both flights were packed full full - so not room for all carry one and bags had to be checked but still good flights.
Southwest
8.0
Very good
4,220 reviews
Southwest
8.0
Very good
4,220 reviews
Check prices

Comfort

8.0

Boarding

8.1

Entertainment

7.5

Food

7.0

Crew

8.6

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Patricia,Oct 2026

DAL - TPA

I love flying southwest, Both flights were packed full full - so not room for all carry one and bags had to be checked but still good flights.
Delta
7.8
Good
8,697 reviews
Southwest
8.0
Very good
4,220 reviews
Check prices

Comfort

8.0

Boarding

8.1

Entertainment

7.5

Food

7.0

Crew

8.6

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Patricia,Oct 2026

DAL - TPA

I love flying southwest, Both flights were packed full full - so not room for all carry one and bags had to be checked but still good flights.

Related info for your journey

  • How long is the flight from Buffalo to Seattle?

    There are many flights that can get you from Buffalo to Seattle in 11h 05m. Fly via Southwest or Delta to get the fastest option. Buffalo and Seattle are separated by a distance of 3404 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

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

    According to our current data, Delta (C$ 233), and Southwest (C$ 613) offers the cheapest pricing from Buffalo to Seattle. Delta is priced at 67% lower than the current average price of a flight leaving 3 months from now.

  • 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, February is the cheapest month in which you can book a flight from Buffalo to Seattle (average of C$ 536). Flying from Buffalo to Seattle in April is currently the most expensive (average of C$ 863). 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
SeaTac
Kent
Tukwila
Mukilteo
Ellensburg
Renton
Lynnwood
Cashmere
Tacoma
Marysville
Federal Way
Kirkland
Leavenworth

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Buffalo to Seattle

Newark to Seattle flights
John F Kennedy Intl to Seattle flights
Buffalo to Portland flights

Top 2 airlines flying from Buffalo to Seattle

AirlineCheapestAverageFlexibilityOn-time
DeltaCheapestC$ 233AverageC$ 537FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
SouthwestCheapestC$ 613AverageC$ 702FlexibilityNo cancel feeOn-time63%
Search Southwest flights

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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?

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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