Flight Destinations in King County

View ฿2,505 flight on Tue, 28 Apr 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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Cheap round-trip flights to King County

Prices were available within the past 7 days and start at ฿2,505 for one-way flights and ฿3,740 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Thu, 7 May - Sun, 17 May
LAX
Los Angeles
SEA
Seattle
฿3,740 Return, found 10 hours ago
฿3,740
Return
found 10 hours ago
Select Delta flight, departing Thu, 7 May from Los Angeles to Seattle, returning Sun, 17 May, priced at ฿3,740 found 10 hours ago
Delta
Tue, 14 Apr - Sat, 18 Apr
LAX
Los Angeles
SEA
Seattle
฿4,700 Return, found 4 days ago
฿4,700
Return
found 4 days ago
Select Delta flight, departing Tue, 14 Apr from Los Angeles to Seattle, returning Sat, 18 Apr, priced at ฿4,700 found 4 days ago
Delta
Thu, 7 May - Sun, 17 May
LAX
Los Angeles
SEA
Seattle
฿5,335 Return, found 10 hours ago
฿5,335
Return
found 10 hours ago
Select Delta flight, departing Thu, 7 May from Los Angeles to Seattle, returning Sun, 17 May, priced at ฿5,335 found 10 hours ago
Delta
Tue, 7 Apr - Wed, 8 Apr
LAX
Los Angeles
SEA
Seattle
฿5,595 Return, found 6 days ago
฿5,595
Return
found 6 days ago
Select Delta flight, departing Tue, 7 Apr from Los Angeles to Seattle, returning Wed, 8 Apr, priced at ฿5,595 found 6 days ago
Delta
Fri, 6 Mar - Sat, 7 Mar
LAX
Los Angeles
SEA
Seattle
฿5,660 Return, found 2 days ago
฿5,660
Return
found 2 days ago
Select Delta flight, departing Fri, 6 Mar from Los Angeles to Seattle, returning Sat, 7 Mar, priced at ฿5,660 found 2 days ago
Delta
Tue, 14 Apr - Sat, 18 Apr
LAX
Los Angeles
SEA
Seattle
฿5,690 Return, found 4 days ago
฿5,690
Return
found 4 days ago
Select Delta flight, departing Tue, 14 Apr from Los Angeles to Seattle, returning Sat, 18 Apr, priced at ฿5,690 found 4 days ago
United
Thu, 7 May - Sun, 17 May
LAX
Los Angeles
SEA
Seattle
฿5,975 Return, found 10 hours ago
฿5,975
Return
found 10 hours ago
Select United flight, departing Thu, 7 May from Los Angeles to Seattle, returning Sun, 17 May, priced at ฿5,975 found 10 hours ago
United
Thu, 7 May - Sun, 17 May
LAX
Los Angeles
SEA
Seattle
฿6,145 Return, found 10 hours ago
฿6,145
Return
found 10 hours ago
Select United flight, departing Thu, 7 May from Los Angeles to Seattle, returning Sun, 17 May, priced at ฿6,145 found 10 hours ago
American Airlines
Thu, 7 May - Sun, 17 May
LAX
Los Angeles
SEA
Seattle
฿7,105 Return, found 10 hours ago
฿7,105
Return
found 10 hours ago
Select American Airlines flight, departing Thu, 7 May from Los Angeles to Seattle, returning Sun, 17 May, priced at ฿7,105 found 10 hours ago
Alaska Airlines
Mon, 2 Mar - Tue, 10 Mar
SAN
San Diego
SEA
Seattle
฿8,530 Return, found 20 hours ago
฿8,530
Return
found 20 hours ago
Select Alaska Airlines flight, departing Mon, 2 Mar from San Diego to Seattle, returning Tue, 10 Mar, priced at ฿8,530 found 20 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 ฿3,740.
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 ฿3,740 and ฿21,055. Many lucky travellers nabbed one-way tickets from Los Angeles (LAX) for only ฿2,505.
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.

How much is a plane ticket to King County?
In the last seven days, plane fares to King County varied from ฿3,740 to ฿21,055.
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.

Korean Air
Wed, 22 Apr - Mon, 4 May
BKK
Bangkok
SEA
Seattle
฿21,055 Return, found 1 day ago
฿21,055
Return
found 1 day ago
Select Korean Air flight, departing Wed, 22 Apr from Bangkok to Seattle, returning Mon, 4 May, priced at ฿21,055 found 1 day ago
*Available to Expedia members.