Flight to King County

View S$62 flight on Tue, 31 Mar, 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 S$62 for one-way flights and S$123 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Wed, 15 Apr - Wed, 22 Apr
SFO
San Francisco
SEA
Seattle
S$123 Return, found 6 days ago
S$123
Return
found 6 days ago
Select Delta flight, departing Wed, 15 Apr from San Francisco to Seattle, returning Wed, 22 Apr, priced at S$123 found 6 days ago
Delta
Thu, 30 Apr - Mon, 4 May
SJC
San Jose
SEA
Seattle
S$138 Return, found 1 day ago
S$138
Return
found 1 day ago
Select Delta flight, departing Thu, 30 Apr from San Jose to Seattle, returning Mon, 4 May, priced at S$138 found 1 day ago
Alaska Airlines
Mon, 23 Mar - Wed, 25 Mar
SFO
San Francisco
SEA
Seattle
S$200 Return, found 6 days ago
S$200
Return
found 6 days ago
Select Alaska Airlines flight, departing Mon, 23 Mar from San Francisco to Seattle, returning Wed, 25 Mar, priced at S$200 found 6 days ago
United
Tue, 31 Mar - Thu, 2 Apr
SFO
San Francisco
SEA
Seattle
S$211 Return, found 5 days ago
S$211
Return
found 5 days ago
Select United flight, departing Tue, 31 Mar from San Francisco to Seattle, returning Thu, 2 Apr, priced at S$211 found 5 days ago
Delta
Fri, 1 May - Tue, 5 May
ORD
Chicago
SEA
Seattle
S$250 Return, found 5 days ago
S$250
Return
found 5 days ago
Select Delta flight, departing Fri, 1 May from Chicago to Seattle, returning Tue, 5 May, priced at S$250 found 5 days ago
American Airlines
Wed, 15 Apr - Wed, 22 Apr
SFO
San Francisco
SEA
Seattle
S$288 Return, found 6 days ago
S$288
Return
found 6 days ago
Select American Airlines flight, departing Wed, 15 Apr from San Francisco to Seattle, returning Wed, 22 Apr, priced at S$288 found 6 days ago
Alaska Airlines
Wed, 15 Apr - Wed, 22 Apr
SFO
San Francisco
PAE
Seattle
S$291 Return, found 6 days ago
S$291
Return
found 6 days ago
Select Alaska Airlines flight, departing Wed, 15 Apr from San Francisco to Seattle, returning Wed, 22 Apr, priced at S$291 found 6 days ago
American Airlines
Wed, 3 Jun - Wed, 10 Jun
ORD
Chicago
PAE
Seattle
S$659 Return, found 3 days ago
S$659
Return
found 3 days ago
Select American Airlines flight, departing Wed, 3 Jun from Chicago to Seattle, returning Wed, 10 Jun, priced at S$659 found 3 days ago
Air Canada
Fri, 8 May - Fri, 22 May
ICN
Seoul
SEA
Seattle
S$684 Return, found 2 days ago
S$684
Return
found 2 days ago
Select Air Canada flight, departing Fri, 8 May from Seoul to Seattle, returning Fri, 22 May, priced at S$684 found 2 days ago
Philippine Airlines
Thu, 3 Sept - Sun, 20 Sept
SIN
Singapore
SEA
Seattle
S$887 Return, found 1 hour ago
S$887
Return
found 1 hour ago
Select Philippine Airlines flight, departing Thu, 3 Sept from Singapore to Seattle, returning Sun, 20 Sept, priced at S$887 found 1 hour ago

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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, 3 Sept - Sun, 20 Sept
SIN
Singapore
SEA
Seattle
S$887 Return, found 1 hour ago
S$887
Return
found 1 hour ago
Select Philippine Airlines flight, departing Thu, 3 Sept from Singapore to Seattle, returning Sun, 20 Sept, priced at S$887 found 1 hour 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$123.
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$123 and S$887. Many lucky travellers nabbed one-way tickets from San Francisco (SFO) for only S$62.
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$123 to S$887.
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, Singapore Airlines, Hainan Airlines, Philippine Airlines
Roundtrip price
from S$123
King County Flights Information

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