Cheap Flights to King County | Popular Routes to King County from HK$776

View HK$776 flight on Sat, 10 Jan 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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Cheap round-trip flights to King County

Prices were available within the past 7 days and start at HK$776 for one-way flights and HK$1,229 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sat, 10 Jan - Sat, 17 Jan
LAX
Los Angeles
SEA
Seattle
HK$1,229 Return, found 2 days ago
HK$1,229
Return
found 2 days ago
Select Delta flight, departing Sat, 10 Jan from Los Angeles to Seattle, returning Sat, 17 Jan, priced at HK$1,229 found 2 days ago
United
Sat, 10 Jan - Sat, 17 Jan
LAX
Los Angeles
SEA
Seattle
HK$1,638 Return, found 2 days ago
HK$1,638
Return
found 2 days ago
Select United flight, departing Sat, 10 Jan from Los Angeles to Seattle, returning Sat, 17 Jan, priced at HK$1,638 found 2 days ago
American Airlines
Sat, 17 Jan - Sun, 18 Jan
LAX
Los Angeles
SEA
Seattle
HK$1,638 Return, found 4 days ago
HK$1,638
Return
found 4 days ago
Select American Airlines flight, departing Sat, 17 Jan from Los Angeles to Seattle, returning Sun, 18 Jan, priced at HK$1,638 found 4 days ago
American Airlines
Sat, 17 Jan - Sun, 18 Jan
LAX
Los Angeles
PAE
Seattle
HK$1,767 Return, found 4 days ago
HK$1,767
Return
found 4 days ago
Select American Airlines flight, departing Sat, 17 Jan from Los Angeles to Seattle, returning Sun, 18 Jan, priced at HK$1,767 found 4 days ago
Alaska Airlines
Fri, 2 Jan - Wed, 7 Jan
LAX
Los Angeles
SEA
Seattle
HK$2,122 Return, found 13 hours ago
HK$2,122
Return
found 13 hours ago
Select Alaska Airlines flight, departing Fri, 2 Jan from Los Angeles to Seattle, returning Wed, 7 Jan, priced at HK$2,122 found 13 hours ago
Philippine Airlines
Thu, 16 Jul - Thu, 23 Jul
HKG
Hong Kong SAR
SEA
Seattle
HK$4,581 Return, found 6 hours ago
HK$4,581
Return
found 6 hours ago
Select Philippine Airlines flight, departing Thu, 16 Jul from Hong Kong SAR to Seattle, returning Thu, 23 Jul, priced at HK$4,581 found 6 hours ago
Air Canada
Thu, 2 Apr - Sat, 11 Apr
HKG
Hong Kong SAR
SEA
Seattle
HK$4,634 Return, found 8 hours ago
HK$4,634
Return
found 8 hours ago
Select Air Canada flight, departing Thu, 2 Apr from Hong Kong SAR to Seattle, returning Sat, 11 Apr, priced at HK$4,634 found 8 hours ago
Hainan Airlines
Mon, 22 Dec - Tue, 27 Jan
HKG
Hong Kong SAR
SEA
Seattle
HK$5,053 Return, found 5 days ago
HK$5,053
Return
found 5 days ago
Select Hainan Airlines flight, departing Mon, 22 Dec from Hong Kong SAR to Seattle, returning Tue, 27 Jan, priced at HK$5,053 found 5 days ago
China Airlines
Tue, 5 May - Tue, 12 May
HKG
Hong Kong SAR
SEA
Seattle
HK$5,113 Return, found 15 hours ago
HK$5,113
Return
found 15 hours ago
Select China Airlines flight, departing Tue, 5 May from Hong Kong SAR to Seattle, returning Tue, 12 May, priced at HK$5,113 found 15 hours ago
Cathay Pacific
Thu, 2 Apr - Tue, 7 Apr
HKG
Hong Kong SAR
SEA
Seattle
HK$5,143 Return, found 9 hours ago
HK$5,143
Return
found 9 hours ago
Select Cathay Pacific flight, departing Thu, 2 Apr from Hong Kong SAR to Seattle, returning Tue, 7 Apr, priced at HK$5,143 found 9 hours ago

About King County

Expedia offers flights to King County to meet every traveller's needs. Whatever your flight need - Expedia has the flight for you. So choose from flights to King County or destinations around the world and discover how easy it is to make your flight reservations on Expedia.

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 HK$1,229.
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 HK$1,229 and HK$5,143. Many lucky travellers nabbed one-way tickets from Los Angeles (LAX) for only HK$776.
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 traveling 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 HK$1,229 to HK$5,143.
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.

Philippine Airlines
Thu, 16 Jul - Thu, 23 Jul
HKG
Hong Kong SAR
SEA
Seattle
HK$4,581 Return, found 6 hours ago
HK$4,581
Return
found 6 hours ago
Select Philippine Airlines flight, departing Thu, 16 Jul from Hong Kong SAR to Seattle, returning Thu, 23 Jul, priced at HK$4,581 found 6 hours ago
*Available to Expedia members.