Cheap Flights to King County

View AU$558 flight on Wed, 18 Mar 2026Opens in a new window

Popular airlines to King County

  • Alaska Airlines

    Alaska Airlines

  • Delta

    Delta

  • American Airlines

    American Airlines

  • United

    United

  • Southwest Airlines

    Southwest Airlines

  • Frontier Airlines

    Frontier Airlines

  • Air Canada

    Air Canada

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Cheapest Flights to King County

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Sun, 22 Mar - Sun, 19 Apr
BNE
Brisbane
SEA
Seattle
AU$1,056 Return, found 21 hours ago
AU$1,056
Return
found 21 hours ago
Select American Airlines flight, departing Sun, 22 Mar from Brisbane to Seattle, returning Sun, 19 Apr, priced at AU$1,056 found 21 hours ago
Air Canada
Sun, 22 Mar - Sun, 19 Apr
BNE
Brisbane
SEA
Seattle
AU$1,067 Return, found 21 hours ago
AU$1,067
Return
found 21 hours ago
Select Air Canada flight, departing Sun, 22 Mar from Brisbane to Seattle, returning Sun, 19 Apr, priced at AU$1,067 found 21 hours ago
Delta
Wed, 28 Jan - Wed, 25 Feb
BNE
Brisbane
SEA
Seattle
AU$1,071 Return, found 2 hours ago
AU$1,071
Return
found 2 hours ago
Select Delta flight, departing Wed, 28 Jan from Brisbane to Seattle, returning Wed, 25 Feb, priced at AU$1,071 found 2 hours ago
United
Thu, 5 Feb - Sat, 21 Feb
BNE
Brisbane
SEA
Seattle
AU$1,072 Return, found 22 hours ago
AU$1,072
Return
found 22 hours ago
Select United flight, departing Thu, 5 Feb from Brisbane to Seattle, returning Sat, 21 Feb, priced at AU$1,072 found 22 hours ago
Hainan Airlines
Wed, 18 Mar - Sat, 18 Apr
PVG
Shanghai
SEA
Seattle
AU$1,085 Return, found 10 hours ago
AU$1,085
Return
found 10 hours ago
Select Hainan Airlines flight, departing Wed, 18 Mar from Shanghai to Seattle, returning Sat, 18 Apr, priced at AU$1,085 found 10 hours ago
Philippine Airlines
Wed, 9 Sept - Wed, 23 Sept
MEL
Melbourne
SEA
Seattle
AU$1,238 Return, found 3 days ago
AU$1,238
Return
found 3 days ago
Select Philippine Airlines flight, departing Wed, 9 Sept from Melbourne to Seattle, returning Wed, 23 Sept, priced at AU$1,238 found 3 days ago
All Nippon Airways
Tue, 17 Mar - Sun, 19 Apr
PVG
Shanghai
SEA
Seattle
AU$1,259 Return, found 1 day ago
AU$1,259
Return
found 1 day ago
Select All Nippon Airways flight, departing Tue, 17 Mar from Shanghai to Seattle, returning Sun, 19 Apr, priced at AU$1,259 found 1 day ago
Asiana Airlines
Sat, 14 Mar - Fri, 10 Apr
PVG
Shanghai
SEA
Seattle
AU$1,263 Return, found 1 day ago
AU$1,263
Return
found 1 day ago
Select Asiana Airlines flight, departing Sat, 14 Mar from Shanghai to Seattle, returning Fri, 10 Apr, priced at AU$1,263 found 1 day ago
Korean Air
Tue, 17 Mar - Sun, 19 Apr
PVG
Shanghai
SEA
Seattle
AU$1,263 Return, found 1 day ago
AU$1,263
Return
found 1 day ago
Select Korean Air flight, departing Tue, 17 Mar from Shanghai to Seattle, returning Sun, 19 Apr, priced at AU$1,263 found 1 day ago
Delta
Tue, 17 Mar - Sun, 19 Apr
PVG
Shanghai
SEA
Seattle
AU$1,321 Return, found 1 day ago
AU$1,321
Return
found 1 day ago
Select Delta flight, departing Tue, 17 Mar from Shanghai to Seattle, returning Sun, 19 Apr, priced at AU$1,321 found 1 day ago

Trending flights to King County

These prices were available within the past 7 days. Prices quoted are per person, return, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Sun, 22 Mar - Sun, 19 Apr
BNE
Brisbane
SEA
Seattle
AU$1,056 Return, found 21 hours ago
AU$1,056
Return
found 21 hours ago
Select American Airlines flight, departing Sun, 22 Mar from Brisbane to Seattle, returning Sun, 19 Apr, priced at AU$1,056 found 21 hours ago

Frequently asked questions

How do I find cheap flights to King County that have flexible change policies?
We know that things can change in the blink of an eye, so locking in a flexible ticket with Expedia is always a clever idea. Tick the "No change fee" box underneath the "Flexible change policies" filter. Your low-cost, flexible flight to King County is only a few clicks away.
Which airlines fly to King County?
When you're ready to book your ticket to or near King County, these carriers look forward to welcoming you on board:

  • Alaska Airlines - 8 781 flights to or near King County each month, including 8 781 flights to Seattle - Tacoma Intl. Airport (SEA) per month.
  • Delta Air Lines - 4 186 flights to or near King County each month, including 4 186 flights to Seattle - Tacoma Intl. Airport (SEA) per month.
  • United Airlines - 828 flights to or near King County each month, including 828 flights to Seattle - Tacoma Intl. Airport (SEA) per month.

How can I find cheap tickets to King County?
Book in advance, fly in or out of nearby airports, avoid peak travel periods — there are plenty of ways! One more is to take advantage of Expedia's "flexible dates" feature. Search for your King County flight, then compare the prices for nearby dates. In the last seven days, the best price for a flight to King County was AU$1,056.
How much is a flight to King County?
There were plenty of affordable fares for the taking in the last seven days, with the price of a return flight to King County ranging between AU$1,056 and AU$1,321. Many lucky travellers nabbed one-way tickets from Shanghai (PVG) for only AU$558.
What are the most popular airports to fly into in King County?
Depending on which carrier you travel with and departure city, one of these leading airports will be your entry point to King County:

  • Seattle - Tacoma Intl. Airport (SEA) - 15 456 flights per month.
  • Boeing Field Airport (BFI) - 247 flights per month.

When is the cheapest time to fly to King County?
If you'd prefer to spend your money experiencing King County rather than on your flight there, depart early in the week. The most cost-effective day to travel is generally Tuesday, with Monday running a close second. With many folks travelling over the weekend, Saturday often has the highest fares.
How much is a plane ticket to King County?
In the last seven days, plane fares to King County varied from AU$1,056 to AU$1,321.
What is the best time to go to King County?
A terrific time to check out Seattle is after June 20 when summer starts. In King County's most populated city, temperatures range from 13ºC to 24ºC during this time — glorious weather for touring around! March, April and May are the most popular months for tourists.
What months are the cheapest to book a flight to King County?
February is the cheapest month to reserve a seat for your King County adventure. Airfares cost the most over the festive month of December, so steer clear of this time if possible.

Book with confidence

King County Flights

When was the last time you embarked on a grand adventure? Whether it was last month or years ago, there’s never been a better time to start planning your next big trip. Book tickets to King County today and get ready to build your travel itinerary, from exploring the area with your family to recharging in the change of scenery. During your stay, visit the must-see attractions, chow down on the local cuisine, and relish in a holiday state of mind. However you decide to spend your upcoming trip, we’re here to make your travel plans easy and affordable.

Book Your King County Airfare

At Expedia.com.au, it’s simple to find cheap flights to King County that won’t cause your wallet to flinch. Browse through our inventory of King County flights and find airfare matching your preferred times and dates. Looking for a red-eye flight or an afternoon departure? Don’t worry, we’ve got you covered. You can even take advantage of our convenient My Scratchpad online feature, which lets you track your search results with ease. No more excuses; book your travel arrangements with us today to make your dream trip a reality.

King County Flights

Travel information

King County Flights Information

Airlines serving
Hainan Airlines, American Airlines, Air Canada, Delta, United, Qantas Airways, Philippine Airlines, Jetstar, All Nippon Airways, Asiana Airlines, Korean Air
Roundtrip price
from AU$1,056
King County Flights Information

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