Flight Destinations in King County

View ฿2,885 flight on Wed, 8 Jul 2026Opens in a new window

Popular airlines to King County

  • Alaska Airlines

  • Delta

  • American Airlines

  • United

  • Southwest Airlines

  • Frontier Airlines

  • JetBlue Airways

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Cheap round-trip flights to King County

Prices were available within the past 7 days and start at ฿2,885 for one-way flights and ฿5,760 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Tue, 30 Jun - Tue, 7 Jul
SFO
San Francisco
SEA
Seattle
฿5,760 Return, found 19 hours ago
฿5,760
Return
found 19 hours ago
Select Delta flight, departing Tue, 30 Jun from San Francisco to Seattle, returning Tue, 7 Jul, priced at ฿5,760 found 19 hours ago
Delta
Sat, 6 Jun - Sun, 7 Jun
LAX
Los Angeles
SEA
Seattle
฿6,730 Return, found 23 hours ago
฿6,730
Return
found 23 hours ago
Select Delta flight, departing Sat, 6 Jun from Los Angeles to Seattle, returning Sun, 7 Jun, priced at ฿6,730 found 23 hours ago
Delta
Thu, 4 Jun - Sun, 7 Jun
LAX
Los Angeles
SEA
Seattle
฿7,055 Return, found 2 days ago
฿7,055
Return
found 2 days ago
Select Delta flight, departing Thu, 4 Jun from Los Angeles to Seattle, returning Sun, 7 Jun, priced at ฿7,055 found 2 days ago
United
Tue, 30 Jun - Tue, 7 Jul
SFO
San Francisco
SEA
Seattle
฿7,065 Return, found 19 hours ago
฿7,065
Return
found 19 hours ago
Select United flight, departing Tue, 30 Jun from San Francisco to Seattle, returning Tue, 7 Jul, priced at ฿7,065 found 19 hours ago
Delta
Tue, 30 Jun - Tue, 7 Jul
SFO
San Francisco
SEA
Seattle
฿7,225 Return, found 19 hours ago
฿7,225
Return
found 19 hours ago
Select Delta flight, departing Tue, 30 Jun from San Francisco to Seattle, returning Tue, 7 Jul, priced at ฿7,225 found 19 hours ago
United
Fri, 31 Jul - Wed, 5 Aug
LAX
Los Angeles
SEA
Seattle
฿8,025 Return, found 12 hours ago
฿8,025
Return
found 12 hours ago
Select United flight, departing Fri, 31 Jul from Los Angeles to Seattle, returning Wed, 5 Aug, priced at ฿8,025 found 12 hours ago
American Airlines
Tue, 30 Jun - Tue, 7 Jul
SFO
San Francisco
SEA
Seattle
฿8,035 Return, found 19 hours ago
฿8,035
Return
found 19 hours ago
Select American Airlines flight, departing Tue, 30 Jun from San Francisco to Seattle, returning Tue, 7 Jul, priced at ฿8,035 found 19 hours ago
Delta
Sat, 6 Jun - Mon, 8 Jun
SFO
San Francisco
SEA
Seattle
฿8,140 Return, found 6 days ago
฿8,140
Return
found 6 days ago
Select Delta flight, departing Sat, 6 Jun from San Francisco to Seattle, returning Mon, 8 Jun, priced at ฿8,140 found 6 days ago
Alaska Airlines
Tue, 4 Aug - Tue, 18 Aug
LAX
Los Angeles
SEA
Seattle
฿9,905 Return, found 2 days ago
฿9,905
Return
found 2 days ago
Select Alaska Airlines flight, departing Tue, 4 Aug from Los Angeles to Seattle, returning Tue, 18 Aug, priced at ฿9,905 found 2 days ago
Philippine Airlines
Thu, 22 Oct - Sun, 15 Nov
HND
Tokyo
SEA
Seattle
฿44,435 Return, found 2 days ago
฿44,435
Return
found 2 days ago
Select Philippine Airlines flight, departing Thu, 22 Oct from Tokyo to Seattle, returning Sun, 15 Nov, priced at ฿44,435 found 2 days 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.

Korean Air
Thu, 25 Jun - Fri, 3 Jul
BKK
Bangkok
SEA
Seattle
฿17,770 Return, found 15 hours ago
฿17,770
Return
found 15 hours ago
Select Korean Air flight, departing Thu, 25 Jun from Bangkok to Seattle, returning Fri, 3 Jul, priced at ฿17,770 found 15 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 ฿5,760.
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 ฿5,760 and ฿44,435. Many lucky travellers nabbed one-way tickets from San Francisco (SFO) for only ฿2,885.
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 ฿5,760 to ฿44,435.
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

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.
About King County
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