A calm lake with a wooden fence and trees on the left, a clear sky, and a distant city skyline.

Cheap Flights to Northwest Seattle

View ₩66,300 flight on Fri, Oct 30, 2026Opens in a new window

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  • United

  • Southwest Airlines

  • Frontier Airlines

  • Air Canada

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How much is the cheapest flight to Northwest Seattle?

Prices were available within the past 7 days and start at ₩66,300 for one-way flights and ₩131,900 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Alaska Airlines
United
American Airlines
Southwest Airlines

Frequently asked questions

How do I find cheap flights to Northwest Seattle that have flexible change policies?
By using our smart "No change fee" filter, that's how. All you have to do is enter your preferred dates and destination, click "Search," then check the box directly under the "Flexible change policies" subheading (it's on the left of your screen). Expedia makes it easy to find flexible, low-priced tickets to Northwest Seattle.
Which airlines fly to Northwest Seattle?
When it's time for a well-earned break, these top airlines will make journeying to Northwest Seattle a total breeze:
  • Kenmore Air - 243 flights to or near Northwest Seattle each month, including 243 flights to Boeing Field Airport (BFI) per month.
  • Sun Country Airlines - 4 flights to or near Northwest Seattle each month, including 4 flights to Boeing Field Airport (BFI) per month.
How can I find cheap tickets to Northwest Seattle?
A great strategy for finding cheap airfares is to be flexible with your travel dates. Start by searching for your flight to Northwest Seattle, then click on the "flexible dates" box for a list of prices for nearby days. Want another tip? Book ahead of time. To give you an idea of costs, ₩131,900 was the best price for a flight to Northwest Seattle in the last seven days.
How much is a flight to Northwest Seattle?
In the last seven days, return airfares to Northwest Seattle sold for as low as ₩131,900 and reached a maximum of ₩723,200. For one-way fares departing from San Francisco (SFO), the lowest price during this time was just ₩66,300.
What are the most popular airports to fly into in Northwest Seattle?
Book your flight to Boeing Field Airport (BFI) and sample the best that Northwest Seattle has to offer. As the region's main entry point, around 247 flights land here every month.
When is the cheapest time to fly to Northwest Seattle?
If you're not fixed on your travel dates to Northwest Seattle, depart early in the week. The cheapest day to take off is usually Tuesday, followed closely by Monday. Saturday is typically the costliest day, with a lot of people choosing to take off on the weekend.
How much is a plane ticket to Northwest Seattle?
In the last seven days, ticket prices to Northwest Seattle ranged from ₩131,900 to ₩723,200.
What months are the cheapest to book a flight to Northwest Seattle?
February is the most affordable month to reserve a seat for your Northwest Seattle adventure. Fares are at a premium during December, so avoid this time if you can.

Book with confidence

Searching for cheap flights to Northwest Seattle? No travel company presents more choices than Expedia if you're looking to compare flights to Northwest Seattle. With more airlines, cheaper flights, fewer stops, and more departure and arrival times travellers should ensure they search on Expedia before any holiday to Seattle. Expedia provides the cheapest flights to many destinations in Seattle and you may find even greater savings if you combine your flight with a hotel stay in Northwest Seattle.

Travel information

Destination airport
Lake Union Seaplane Base
Destination airport IATA code
LKE
Destination city name
Seattle
Roundtrip price
₩414,475

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