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 2/6. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — SEA
17 Jan — 24 Jan1
Round-trip
1 adult
Economy
Round-trip
1 adult, Economy, 0 bags
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 Friday or Monday and return on a Tuesday
Cheap flight deals from Buffalo to Seattle
Enter your travel dates to find the best prices.
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 18 December 2025.
Wed 24/125:52 p.m.BUF - SEA
1 stop7h 33mDelta
Wed 31/126:00 a.m.SEA - BUF
1 stop8h 12mDelta
Deal found 16/12C$ 648
Wed 24/126:10 a.m.BUF - SEA
1 stop7h 25mDelta
Tue 6/19:59 p.m.SEA - BUF
1 stop10h 12mDelta
Deal found 16/12C$ 683
Wed 24/121:59 p.m.BUF - SEA
1 stop7h 47mUnited Airlines
Thu 1/17:00 a.m.SEA - BUF
1 stop6h 34mUnited Airlines
Deal found 16/12C$ 718
Thu 25/122:50 p.m.BUF - SEA
2 stops13h 09mUnited Airlines
Thu 1/18:00 a.m.SEA - BUF
1 stop8h 06mUnited Airlines
Deal found 16/12C$ 780
Thu 25/126:10 a.m.BUF - SEA
1 stop7h 25mDelta
Thu 1/111:45 a.m.SEA - BUF
1 stop7h 48mDelta
Deal found 16/12C$ 824
Tue 23/1212:07 p.m.BUF - SEA
1 stop11h 43mDelta
Wed 31/1211:45 a.m.SEA - BUF
1 stop7h 48mDelta
Deal found 16/12C$ 832
Tue 23/126:00 a.m.BUF - SEA
1 stop11h 07mDelta
Tue 6/111:10 p.m.SEA - BUF
1 stop9h 17mDelta
Deal found 16/12C$ 868
Wed 24/125:52 p.m.BUF - SEA
1 stop7h 33mDelta
Mon 5/111:10 p.m.SEA - BUF
2 stops14h 45mDelta
Deal found 16/12C$ 869
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 18 December 2025.
Sat 16/512:25 p.m.BUF - SEA
1 stop11h 28mJetBlue
Tue 26/511:30 a.m.SEA - BUF
1 stop8h 27mJetBlue
Deal found 16/12C$ 511
Mon 12/12:49 p.m.BUF - SEA
1 stop9h 08mUnited Airlines
Thu 15/110:58 a.m.SEA - BUF
1 stop6h 31mUnited Airlines
Deal found 15/12C$ 541
Mon 12/11:20 p.m.BUF - SEA
2 stops12h 10mSouthwest
Thu 15/15:00 a.m.SEA - BUF
1 stop7h 25mSouthwest
Deal found 15/12C$ 543
Sun 3/512:25 p.m.BUF - SEA
1 stop11h 28mJetBlue
Sat 16/511:50 p.m.SEA - BUF
1 stop8h 20mJetBlue
Deal found 17/12C$ 515
Sat 24/15:15 a.m.BUF - SEA
1 stop7h 55mSouthwest
Sun 25/15:00 a.m.SEA - BUF
1 stop7h 25mSouthwest
Deal found 17/12C$ 547
Sun 15/22:54 p.m.BUF - SEA
1 stop9h 02mUnited Airlines
Thu 19/212:55 p.m.SEA - BUF
1 stop7h 04mUnited Airlines
Deal found 17/12C$ 572
Wed 22/46:55 p.m.BUF - SEA
1 stop8h 15mSouthwest
Mon 27/411:55 p.m.SEA - BUF
1 stop7h 25mSouthwest
Deal found 17/12C$ 602
Sun 1/38:25 a.m.BUF - SEA
1 stop8h 24mUnited Airlines
Sat 7/312:25 p.m.SEA - BUF
1 stop8h 10mUnited Airlines
Deal found 16/12C$ 602
Sat 2/52:00 p.m.BUF - SEA
2 stops12h 00mSouthwest
Sun 10/511:55 p.m.SEA - BUF
1 stop7h 20mSouthwest
Deal found 17/12C$ 609
Sat 4/45:50 p.m.BUF - SEA
1 stop8h 00mUnited Airlines
Sat 11/411:59 p.m.SEA - BUF
2 stops10h 27mUnited Airlines
Deal found 17/12C$ 609
Last-minute flights from Buffalo to Seattle
Discover last-minute flight deals from Buffalo to Seattle. Data last updated 18 December 2025 and is based on user searches.
Fri 9/112:20 p.m.BUF - SEA
2 stops13h 15mSouthwest
Mon 12/18:45 a.m.SEA - BUF
1 stop10h 15mSouthwest
Deal found 17/12C$ 620
Mon 12/12:49 p.m.BUF - SEA
1 stop9h 08mUnited Airlines
Thu 15/110:58 a.m.SEA - BUF
1 stop6h 31mUnited Airlines
Deal found 15/12C$ 541
Mon 12/11:20 p.m.BUF - SEA
2 stops12h 10mSouthwest
Thu 15/15:00 a.m.SEA - BUF
1 stop7h 25mSouthwest
Deal found 15/12C$ 543
Fri 16/12:49 p.m.BUF - SEA
2 stops10h 54mUnited Airlines
Sun 18/18:10 a.m.SEA - BUF
1 stop8h 15mUnited Airlines
Deal found 16/12C$ 515
Sat 24/15:15 a.m.BUF - SEA
1 stop7h 55mSouthwest
Sun 25/15:00 a.m.SEA - BUF
1 stop7h 25mSouthwest
Deal found 17/12C$ 547
Mon 26/18:30 a.m.BUF - SEA
1 stop10h 31mUnited Airlines
Thu 29/18:10 a.m.SEA - BUF
1 stop8h 15mUnited Airlines
Deal found 16/12C$ 642
Fri 30/15:44 p.m.BUF - SEA
1 stop7h 05mDelta
Fri 6/29:45 p.m.SEA - BUF
1 stop10h 26mDelta
Deal found 16/12C$ 602
Sat 31/12:08 p.m.BUF - SEA
1 stop11h 44mDelta
Sat 7/27:10 a.m.SEA - BUF
1 stop9h 02mDelta
Deal found 17/12C$ 506
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 18 December 2025.
Tue 2/612:25 p.m.BUF - SEA
1 stop11h 28mJetBlue
Deal found 17/12C$ 233
Tue 27/15:44 p.m.BUF - SEA
1 stop7h 05mDelta
Deal found 17/12C$ 244
Sat 31/111:51 a.m.BUF - SEA
1 stop11h 09mDelta
Deal found 17/12C$ 254
Mon 26/13:38 p.m.BUF - SEA
1 stop22h 41mDelta
Deal found 17/12C$ 258
Thu 29/111:51 a.m.BUF - SEA
1 stop11h 09mDelta
Deal found 17/12C$ 271
Thu 8/18:30 a.m.BUF - SEA
2 stops12h 57mUnited Airlines
Deal found 17/12C$ 278
Mon 5/110:43 a.m.BUF - SEA
3 stops34h 08mMultiple Airlines
Deal found 16/12C$ 282
Sun 25/15:44 p.m.BUF - SEA
1 stop7h 05mDelta
Deal found 17/12C$ 302
Mon 5/110:43 a.m.BUF - SEA
2 stops34h 08mFrontier
Deal found 16/12C$ 304
Wed 7/111:24 a.m.BUF - SEA
2 stops12h 33mUnited Airlines
Deal found 17/12C$ 320
Find 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 18 December 2025.
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 18 December 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
Sat 16/5
12:25 p.m.-8:53 p.m.
1 stop11h 28m
Seattle/Tacoma Intl
Tue 26/5
11:30 a.m.-10:57 p.m.
1 stop8h 27m
C$ 511
BuffaloSeattle
BUF - SEA
BUFSEA
Buffalo
Sun 3/5
12:25 p.m.-8:53 p.m.
1 stop11h 28m
Seattle/Tacoma Intl
Sat 16/5
11:50 p.m.-11:10 a.m.
1 stop8h 20m
C$ 515
BuffaloSeattle
BUF - SEA
BUFSEA
Buffalo
Mon 12/1
2:49 p.m.-8:57 p.m.
1 stop9h 08m
Seattle/Tacoma Intl
Thu 15/1
10:58 a.m.-8:29 p.m.
1 stop6h 31m
C$ 541
BuffaloSeattle
BUF - SEA
BUFSEA
Buffalo
Mon 12/1
1:20 p.m.-10:30 p.m.
2 stops12h 10m
Seattle/Tacoma Intl
Thu 15/1
5:00 a.m.-3:25 p.m.
1 stop7h 25m
C$ 543
BuffaloSeattle
BUF - SEA
BUFSEA
Buffalo
Sat 24/1
5:15 a.m.-10:10 a.m.
1 stop7h 55m
Seattle/Tacoma Intl
Sun 25/1
5:00 a.m.-3:25 p.m.
1 stop7h 25m
C$ 547
BuffaloSeattle
BUF - SEA
BUFSEA
Buffalo
Sun 15/2
2:54 p.m.-8:56 p.m.
1 stop9h 02m
Seattle/Tacoma Intl
Thu 19/2
12:55 p.m.-10:59 p.m.
1 stop7h 04m
C$ 572
BuffaloSeattle
BUF - SEA
BUFSEA
Buffalo
Wed 22/4
6:55 p.m.-12:10 a.m.
1 stop8h 15m
Seattle/Tacoma Intl
Mon 27/4
11:55 p.m.-10:20 a.m.
1 stop7h 25m
C$ 602
BuffaloSeattle
BUF - SEA
BUFSEA
Buffalo
Sun 1/3
8:25 a.m.-1:49 p.m.
1 stop8h 24m
Seattle/Tacoma Intl
Sat 7/3
12:25 p.m.-11:35 p.m.
1 stop8h 10m
C$ 602
BuffaloSeattle
BUF - SEA
BUFSEA
Buffalo
Sat 2/5
2:00 p.m.-11:00 p.m.
2 stops12h 00m
Seattle/Tacoma Intl
Sun 10/5
11:55 p.m.-10:15 a.m.
1 stop7h 20m
C$ 609
BuffaloSeattle
BUF - SEA
BUFSEA
Buffalo
Sat 4/4
5:50 p.m.-10:50 p.m.
1 stop8h 00m
Seattle/Tacoma Intl
Sat 11/4
11:59 p.m.-1:26 p.m.
2 stops10h 27m
C$ 609
Flights are sorted by cheapest round-trip flights first.
Deals found on 17/12
Showing 1-10 of 20 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
Prices
More
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 12 December 2025.
To ensure you get the cheapest price possible for a flight from Buffalo to Seattle, you should look to book at least 48 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, September is the cheapest month in which you can book a flight from Buffalo to Seattle (average of C$ 214). Flying from Buffalo to Seattle in December is currently the most expensive (average of C$ 449). 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 18 December 2025.
Unlike in the morning, when flights are generally more expensive, you can save up to 40% 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 44% 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$ 581.
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 Chicago (MDW) have the shortest average one-way travel time for 1-stop routes: 7h 20m.
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 18 December 2025.
Get a feel of what it's like to fly with Southwest 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.
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
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?
There are many flights that can get you from Buffalo to Seattle in 9h 08m. Fly via JetBlue, United Airlines, or Southwest 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 is the cheapest airline to fly from Buffalo to Seattle round-trip?
According to our current data, Southwest (C$ 422), offers the cheapest pricing from Buffalo to Seattle. Southwest is priced at 32% lower than the current average price of a flight leaving 3 months from now.
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 C$ 214). Flying from Buffalo to Seattle in December is currently the most expensive (average of C$ 449). 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.
Explore flights to Seattle departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 18 December 2025.
Discover the top airline 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 18 December 2025.
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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