Flight to King County

View S$88 flight on Tue, 8 Sept, 2026Opens in a new window

Popular airlines to King County

  • Alaska Airlines

  • American Airlines

  • Delta

  • 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 S$88 for one-way flights and S$201 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Tue, 4 Aug - Wed, 19 Aug
SFO
San Francisco
SEA
Seattle
S$201 Return, found 2 days ago
S$201
Return
found 2 days ago
Select Delta flight, departing Tue, 4 Aug from San Francisco to Seattle, returning Wed, 19 Aug, priced at S$201 found 2 days ago
Alaska Airlines
Wed, 29 Jul - Tue, 18 Aug
SFO
San Francisco
SEA
Seattle
S$214 Return, found 2 days ago
S$214
Return
found 2 days ago
Select Alaska Airlines flight, departing Wed, 29 Jul from San Francisco to Seattle, returning Tue, 18 Aug, priced at S$214 found 2 days ago
Delta
Sat, 26 Sept - Mon, 28 Sept
LAX
Los Angeles
SEA
Seattle
S$279 Return, found 4 days ago
S$279
Return
found 4 days ago
Select Delta flight, departing Sat, 26 Sept from Los Angeles to Seattle, returning Mon, 28 Sept, priced at S$279 found 4 days ago
United
Wed, 17 Mar - Wed, 24 Mar
LAX
Los Angeles
SEA
Seattle
S$316 Return, found 2 days ago
S$316
Return
found 2 days ago
Select United flight, departing Wed, 17 Mar from Los Angeles to Seattle, returning Wed, 24 Mar, priced at S$316 found 2 days ago
American Airlines
Sat, 14 Nov - Wed, 18 Nov
SFO
San Francisco
PAE
Seattle
S$349 Return, found 6 days ago
S$349
Return
found 6 days ago
Select American Airlines flight, departing Sat, 14 Nov from San Francisco to Seattle, returning Wed, 18 Nov, priced at S$349 found 6 days ago
American Airlines
Thu, 10 Sept - Wed, 16 Sept
SFO
San Francisco
SEA
Seattle
S$361 Return, found 1 day ago
S$361
Return
found 1 day ago
Select American Airlines flight, departing Thu, 10 Sept from San Francisco to Seattle, returning Wed, 16 Sept, priced at S$361 found 1 day ago
American Airlines
Sat, 26 Sept - Mon, 28 Sept
LAX
Los Angeles
PAE
Seattle
S$406 Return, found 4 days ago
S$406
Return
found 4 days ago
Select American Airlines flight, departing Sat, 26 Sept from Los Angeles to Seattle, returning Mon, 28 Sept, priced at S$406 found 4 days ago
Delta
Sun, 21 Jun - Wed, 24 Jun
MEM
Memphis
SEA
Seattle
S$753 Return, found 22 hours ago
S$753
Return
found 22 hours ago
Select Delta flight, departing Sun, 21 Jun from Memphis to Seattle, returning Wed, 24 Jun, priced at S$753 found 22 hours ago
Finnair
Fri, 16 Oct - Tue, 20 Oct
LHR
London
SEA
Seattle
S$888 Return, found 1 day ago
S$888
Return
found 1 day ago
Select Finnair flight, departing Fri, 16 Oct from London to Seattle, returning Tue, 20 Oct, priced at S$888 found 1 day ago
Virgin Atlantic
Fri, 20 Nov - Wed, 25 Nov
LHR
London
SEA
Seattle
S$913 Return, found 1 day ago
S$913
Return
found 1 day ago
Select Virgin Atlantic flight, departing Fri, 20 Nov from London to Seattle, returning Wed, 25 Nov, priced at S$913 found 1 day ago
Book with confidence
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.

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.

United
Tue, 23 Jun - Tue, 30 Jun
SIN
Singapore
SEA
Seattle
S$966 Return, found 3 days ago
S$966
Return
found 3 days ago
Select United flight, departing Tue, 23 Jun from Singapore to Seattle, returning Tue, 30 Jun, priced at S$966 found 3 days 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 S$201.
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 S$201 and S$966. Many lucky travellers nabbed one-way tickets from San Francisco (SFO) for only S$88.
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 S$201 to S$966.
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

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.

Travel information

King County Flights Information

Airlines serving
Delta, United, American Airlines, Alaska Airlines, Air Canada, Cathay Pacific, Finnair, Virgin Atlantic
Roundtrip price
from S$201
King County Flights Information
*Available to Expedia members.