$140 Cheap Flights from Seattle (SEA) to Buffalo (BUF)

View $140 flight on Wed, Oct 22, 2025Opens in a new window

Popular airlines from Seattle-Tacoma International Airport (SEA) to Buffalo Niagara Intl. Airport (BUF)

Cheap Flights from Seattle to Buffalo (SEA-BUF)

Prices were available within the past 7 days and start at $140 for one-way flights and $265 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

JetBlue Airways
Tue, Oct 21 - Thu, Oct 23
SEA
Seattle
BUF
Buffalo
$265 Roundtrip, found 1 hour ago
$265
Roundtrip
found 1 hour ago
Select JetBlue Airways flight, departing Tue, Oct 21 from Seattle to Buffalo, returning Thu, Oct 23, priced at $265 found 1 hour ago
JetBlue Airways
Tue, Oct 21 - Sat, Oct 25
SEA
Seattle
BUF
Buffalo
$269 Roundtrip, found 1 hour ago
$269
Roundtrip
found 1 hour ago
Select JetBlue Airways flight, departing Tue, Oct 21 from Seattle to Buffalo, returning Sat, Oct 25, priced at $269 found 1 hour ago
JetBlue Airways
Mon, Oct 20 - Sat, Oct 25
SEA
Seattle
BUF
Buffalo
$273 Roundtrip, found 1 hour ago
$273
Roundtrip
found 1 hour ago
Select JetBlue Airways flight, departing Mon, Oct 20 from Seattle to Buffalo, returning Sat, Oct 25, priced at $273 found 1 hour ago
Delta
Tue, Nov 4 - Wed, Nov 12
SEA
Seattle
BUF
Buffalo
$279 Roundtrip, just found
$279
Roundtrip
just found
Select Delta flight, departing Tue, Nov 4 from Seattle to Buffalo, returning Wed, Nov 12, priced at $279 just found
United
Wed, Nov 12 - Tue, Nov 18
SEA
Seattle
BUF
Buffalo
$279 Roundtrip, found 4 hours ago
$279
Roundtrip
found 4 hours ago
Select United flight, departing Wed, Nov 12 from Seattle to Buffalo, returning Tue, Nov 18, priced at $279 found 4 hours ago
American Airlines
Wed, Nov 12 - Tue, Nov 18
SEA
Seattle
BUF
Buffalo
$279 Roundtrip, found 4 hours ago
$279
Roundtrip
found 4 hours ago
Select American Airlines flight, departing Wed, Nov 12 from Seattle to Buffalo, returning Tue, Nov 18, priced at $279 found 4 hours ago
JetBlue Airways
Tue, Oct 21 - Fri, Oct 24
SEA
Seattle
BUF
Buffalo
$280 Roundtrip, found 1 hour ago
$280
Roundtrip
found 1 hour ago
Select JetBlue Airways flight, departing Tue, Oct 21 from Seattle to Buffalo, returning Fri, Oct 24, priced at $280 found 1 hour ago
Southwest Airlines
Wed, Dec 3 - Wed, Dec 10
SEA
Seattle
BUF
Buffalo
$281 Roundtrip, found 2 days ago
$281
Roundtrip
found 2 days ago
Select Southwest Airlines flight, departing Wed, Dec 3 from Seattle to Buffalo, returning Wed, Dec 10, priced at $281 found 2 days ago
JetBlue Airways
Wed, Oct 22 - Thu, Oct 23
SEA
Seattle
BUF
Buffalo
$282 Roundtrip, found 1 hour ago
$282
Roundtrip
found 1 hour ago
Select JetBlue Airways flight, departing Wed, Oct 22 from Seattle to Buffalo, returning Thu, Oct 23, priced at $282 found 1 hour ago
United
Wed, Nov 12 - Tue, Nov 18
SEA
Seattle
BUF
Buffalo
$283 Roundtrip, found 4 hours ago
$283
Roundtrip
found 4 hours ago
Select United flight, departing Wed, Nov 12 from Seattle to Buffalo, returning Tue, Nov 18, priced at $283 found 4 hours ago

Find the cheapest month to fly from Seattle (SEA) to Buffalo (BUF)

September is typically the cheapest month to fly

From $197 - $704 per traveler.

Alternative airports near Buffalo

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Buffalo Niagara Intl. BUF. Cheapest and Closest option available. Average driving time to city center is 16 minutes. Flights from $361
BUF
Buffalo Niagara Intl.
CheapestClosest
Average driving time to city center16 min
Flights from $361

Frequently asked questions

How much does a flight from Seattle - Tacoma Intl. Airport (SEA) to Buffalo Niagara Intl. Airport (BUF) cost?
Snag a cheap one-way flight from $140 or cheap return flight from $265 from Seattle - Tacoma Intl. Airport (SEA) to Buffalo Niagara Intl. Airport (BUF) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Seattle - Tacoma Intl. Airport (SEA) to Buffalo Niagara Intl. Airport (BUF)?
Planning your getaway for October can help you save, as it's the cheapest month for flights between SEA and BUF. You'll often find the lowest prices during the off-season.
What is the cheapest airline that flies from Seattle - Tacoma Intl. Airport (SEA) to Buffalo Niagara Intl. Airport (BUF)?
To find the cheapest airline flying from SEA to BUF, use Expedia's filter tool. Tailor your search based on your travel needs, such as preferred carriers and ideal departure window. You can then sort your results by "Price (lowest to highest)" to see the most affordable options first.
How many flights per day from Seattle - Tacoma Intl. Airport (SEA) to Buffalo Niagara Intl. Airport (BUF)?
There aren't any daily direct flights from Seattle - Tacoma Intl. Airport (SEA) to Buffalo Niagara Intl. Airport (BUF). But you can choose flights with layovers. Filter your search results on Expedia to include one or two stops, and you'll be soaring above the clouds in no time at all.
What day of the week has the most flights from SEA to BUF?
You'll usually find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can vary from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Seattle - Tacoma Intl. Airport (SEA) to Buffalo Niagara Intl. Airport (BUF)?
Select a flight from Seattle - Tacoma Intl. Airport (SEA) to Buffalo Niagara Intl. Airport (BUF) that leaves before 3 PM to reduce the likelihood of delays and cancellations. Departures later than this are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Seattle - Tacoma Intl. Airport (SEA) to Buffalo Niagara Intl. Airport (BUF) last-minute?
Last-minute fares from SEA to BUF are usually more expensive. To lock in the lowest prices, start searching for flights well in advance. That being said, if your travel plans are flexible, you may score a cheap ticket just before your departure.
Is it cheaper to book a SEA to BUF flight and hotel package?
You'll typically save money by securing a SEA to BUF flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's easy to manage everything in one place. After selecting your ideal flights and accommodations, consider adding extras such as car rentals, activities and tours.
Can I cancel or change the date of my flight from Seattle - Tacoma Intl. Airport (SEA) to Buffalo Niagara Intl. Airport (BUF)?
If you reserved your SEA to BUF flight in the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the fare type you purchased, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal for more information.

Travel information

Travel information

Origin airport
Seattle - Tacoma Intl.
Destination airport
Buffalo Niagara Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, JetBlue Airways, Southwest Airlines, United
Roundtrip price
$265
Distance
2116 mi

Book with confidence

Book with confidence

Seattle to Buffalo Flights

The cheapest times to fly from Seattle to Buffalo

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Seattle to Buffalo are during the month of October. You can find some of the cheapest flights from Seattle to Buffalo with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Seattle to Buffalo

Sunday is one of the best days to book for cheap flights from Seattle to Buffalo: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Seattle to Buffalo

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Seattle to Buffalo in 2025. You can also book with separate airlines for your outbound and return journeys, from $140 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Seattle to Buffalo flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Seattle to Buffalo airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Seattle to Buffalo Flights

Explore a world of travel with Expedia

Explore a world of travel with Expedia

*Available to One Key members.