C$235 Cheap Flights from Seattle (SEAA) to Buffalo Niagara (BUF)

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Flight deals from Seattle to Buffalo Niagara Airport

Looking for a cheap last-minute deal or the best return flight from Seattle to Buffalo Niagara Airport? If you want to travel next month, return fares start from C$633. Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Seattle to Buffalo Niagara

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Seattle to Buffalo Niagara flights are currently cheapest in May.

Seattle to Buffalo Niagara: Alternative routes

Compare routes from Seattle to Buffalo below. You may find an airport to fly into that's cheaper, faster, or easier than Buffalo Niagara.

Seattle to Buffalo: Flight information

The things to know before you go.
Cheapest flight foundC$235
Cheapest month to flyMay

Finding cheap flights from Seattle to Buffalo Niagara: Frequently asked questions

The best price we found for a return flight from Seattle to Buffalo Niagara is C$445. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Seattle to Buffalo Niagara. But we found flights with one stop from C$445.
As of March 2026, there are no flights flying from Seattle to Buffalo Niagara.
The cheapest month to fly from Seattle to Buffalo Niagara is usually May.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Seattle to Buffalo Niagara Airport on Monday, May 18, 2026.
No airlines currently offer direct flights between Seattle and Buffalo Niagara Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Buffalo Niagara but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Buffalo is around 40 days in advance, so don’t leave your flight to the last minute.
The cheapest airline that flies to Buffalo Niagara is Frontier Airlines .

Flying from Seattle to Buffalo Niagara International Airport (BUF): what you need to know

  • Get your travels underway at Seattle-Tacoma International Airport (SEA), the main airport in Seattle. Search for flights from Seattle to Buffalo Niagara International Airport (BUF) that fly out of this terminal.

  • Buffalo Niagara International Airport is located in Buffalo. The city operates in the UTC-4 timezone and is 3 hours ahead of Seattle.

  • Arrive at the airport on time so you don't miss your flight from Seattle to BUF. Be there at least two hours ahead for international flights and an hour early for domestic departures to avoid the mad dash to your gate.

  • If you're flying during a peak month like July, get to the terminal even earlier. You'll want to arrive up to four hours before international flights and two hours ahead of domestic departures. You can expect lines to be longer during high seasons like summer and spring break.

Airports in Seattle

Seattle-Tacoma International Airport (SEA)

  • From the centre of Seattle, SEA is around 23 kilometres away. Use navigation apps or visit the official airport website to find the best way to arrive at the terminal.

  • Want a handy hotel near Seattle-Tacoma International Airport? If you're catching an early flight from Seattle to Buffalo Niagara International Airport, these accommodation options will have you sleeping moments from your departure lounge:

Lake Union Sea Plane Base (LKE)

About Buffalo Niagara International Airport (BUF)

Getting from Buffalo Niagara International Airport (BUF) to central Buffalo

  • Buffalo Niagara International Airport is approximately 18 kilometres from the centre of Buffalo. With your own car rental or if you're catching a cab, the drive is about 21 minutes.

  • Travelling by public transport takes about 1 hour and 15 minutes.

How to find the cheapest flights from Seattle to Buffalo Niagara International Airport (BUF)

  • Pick up a one-way ticket from Seattle to Buffalo Niagara International Airport from C$235 or travel return from just C$445. The prices shown are based on availability and could change when you book.

  • Don't leave things to the last minute. You're more likely to find flight tickets from Seattle to BUF if you book ahead. Airlines often offer some excellent early bird rates.

  • If you're flexible with your trip dates, take advantage of the 'Whole month' tool. It'll find the lowest price across each month when searching for your ticket from Seattle to Buffalo Niagara International Airport.

  • Log into your online account or use the app to create a Price Alert. You'll be notified right away if the price has dropped. It's simple to do, and it'll save you time searching for flight tickets from Seattle to BUF every day.

  • Use the filters to tailor your flights from Seattle to Buffalo Niagara International Airport. Select your ideal departure and arrival times, airlines and number of stops. You can also sort your results by 'Cheapest' to see the best deals.

The best time to fly from Seattle to Buffalo Niagara International Airport (BUF)

  • August is the busiest month to hop on a flight from Seattle to Buffalo Niagara International Airport while May is the quietest. To work out the best time to visit Buffalo, consider the pace you like to travel at.

  • Before locking in your flight from Seattle to BUF, think about the kind of weather you enjoy. July is the warmest month in Buffalo, with the temperature ranging from 15ºC to 28ºC.

  • If you like travelling in cooler conditions, look for a cheap flight from Seattle to Buffalo Niagara International Airport in January when temperatures average between -10ºC and 2ºC.

More about Buffalo

Complete your Buffalo trip with a car rental

  • Close all those tabs and let us do the hard work for you. We've also got incredible deals on car rentals in Buffalo once you've booked your cheap flight from Seattle to Buffalo Niagara International Airport. Instantly compare prices all in one place and drive off with the perfect rental for less.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.