Cheap Flights to King County

View AU$107 flight on Wed, 4 Mar 2026Opens in a new window

Popular airlines to King County

  • Alaska Airlines

  • Delta

  • American Airlines

  • United

  • Southwest Airlines

  • Frontier Airlines

  • 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.

Delta
Sat, 7 Mar - Mon, 9 Mar
LAX
Los Angeles
SEA
Seattle
AU$166 Return, found 1 day ago
AU$166
Return
found 1 day ago
Select Delta flight, departing Sat, 7 Mar from Los Angeles to Seattle, returning Mon, 9 Mar, priced at AU$166 found 1 day ago
Delta
Thu, 19 Mar - Sat, 28 Mar
SAN
San Diego
SEA
Seattle
AU$166 Return, found 3 hours ago
AU$166
Return
found 3 hours ago
Select Delta flight, departing Thu, 19 Mar from San Diego to Seattle, returning Sat, 28 Mar, priced at AU$166 found 3 hours ago
Alaska Airlines
Fri, 13 Mar - Sun, 15 Mar
LAX
Los Angeles
PAE
Seattle
AU$166 Return, found 1 day ago
AU$166
Return
found 1 day ago
Select Alaska Airlines flight, departing Fri, 13 Mar from Los Angeles to Seattle, returning Sun, 15 Mar, priced at AU$166 found 1 day ago
Hawaiian Airlines
Thu, 26 Mar - Sat, 28 Mar
LAX
Los Angeles
SEA
Seattle
AU$209 Return, found 2 days ago
AU$209
Return
found 2 days ago
Select Hawaiian Airlines flight, departing Thu, 26 Mar from Los Angeles to Seattle, returning Sat, 28 Mar, priced at AU$209 found 2 days ago
Delta
Sat, 11 Apr - Sat, 18 Apr
SFO
San Francisco
SEA
Seattle
AU$212 Return, found 5 days ago
AU$212
Return
found 5 days ago
Select Delta flight, departing Sat, 11 Apr from San Francisco to Seattle, returning Sat, 18 Apr, priced at AU$212 found 5 days ago
Alaska Airlines
Tue, 17 Mar - Tue, 24 Mar
SFO
San Francisco
PAE
Seattle
AU$212 Return, found 6 days ago
AU$212
Return
found 6 days ago
Select Alaska Airlines flight, departing Tue, 17 Mar from San Francisco to Seattle, returning Tue, 24 Mar, priced at AU$212 found 6 days ago
American Airlines
Wed, 11 Mar - Sat, 14 Mar
LAX
Los Angeles
SEA
Seattle
AU$251 Return, found 2 days ago
AU$251
Return
found 2 days ago
Select American Airlines flight, departing Wed, 11 Mar from Los Angeles to Seattle, returning Sat, 14 Mar, priced at AU$251 found 2 days ago
United
Wed, 25 Mar - Tue, 31 Mar
LAX
Los Angeles
SEA
Seattle
AU$294 Return, found 2 days ago
AU$294
Return
found 2 days ago
Select United flight, departing Wed, 25 Mar from Los Angeles to Seattle, returning Tue, 31 Mar, priced at AU$294 found 2 days ago
Alaska Airlines
Thu, 14 May - Sun, 17 May
SAN
San Diego
PAE
Seattle
AU$334 Return, found 1 day ago
AU$334
Return
found 1 day ago
Select Alaska Airlines flight, departing Thu, 14 May from San Diego to Seattle, returning Sun, 17 May, priced at AU$334 found 1 day ago
American Airlines
Thu, 19 Mar - Sat, 28 Mar
CLD
Carlsbad
SEA
Seattle
AU$418 Return, found 4 days ago
AU$418
Return
found 4 days ago
Select American Airlines flight, departing Thu, 19 Mar from Carlsbad to Seattle, returning Sat, 28 Mar, priced at AU$418 found 4 days ago

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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 Information

Airlines serving
Delta, Alaska Airlines, American Airlines, United, Hawaiian Airlines
Roundtrip price
from AU$166

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$166.
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$166 and AU$864. Many lucky travellers nabbed one-way tickets from San Francisco (SFO) for only AU$107.
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$166 to AU$864.
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.

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
Mon, 23 Feb - Tue, 10 Mar
BNE
Brisbane
SEA
Seattle
AU$864 Return, found 6 days ago
AU$864
Return
found 6 days ago
Select American Airlines flight, departing Mon, 23 Feb from Brisbane to Seattle, returning Tue, 10 Mar, priced at AU$864 found 6 days ago
*Available to Expedia members.