A cityscape with a prominent tower, a body of water, and a distant mountain.

Flight to King County

View S$139 flight on Thu, 10 Sept, 2026Opens in a new window

Popular airlines to King County

  • Alaska Airlines

  • Delta

  • American Airlines

  • United

  • Frontier Airlines

  • Southwest Airlines

  • JetBlue Airways

  • Be in the know

    Get alerts if flight prices drop or rise*

  • Book smarter

    Save up to 40% on select hotels after you book a flight*

  • Earn twice

    Earn your airline miles on top of our rewards
    Sign in

Cheap round-trip flights to King County

Prices were available within the past 7 days and start at S$139 for one-way flights and S$278 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Harbour Air Seaplanes
Fri, 28 Aug - Fri, 4 Sept
CXH
Vancouver
LKE
Seattle
S$278 Return, found 6 days ago
S$278
Return
found 6 days ago
Select Harbour Air Seaplanes flight, departing Fri, 28 Aug from Vancouver to Seattle, returning Fri, 4 Sept, priced at S$278 found 6 days ago
Harbour Air Seaplanes
Fri, 28 Aug - Fri, 4 Sept
CXH
Vancouver
LKE
Seattle
S$355 Return, found 6 days ago
S$355
Return
found 6 days ago
Select Harbour Air Seaplanes flight, departing Fri, 28 Aug from Vancouver to Seattle, returning Fri, 4 Sept, priced at S$355 found 6 days ago
Harbour Air Seaplanes
Sat, 22 Aug - Sun, 23 Aug
CXH
Vancouver
LKE
Seattle
S$425 Return, found 6 days ago
S$425
Return
found 6 days ago
Select Harbour Air Seaplanes flight, departing Sat, 22 Aug from Vancouver to Seattle, returning Sun, 23 Aug, priced at S$425 found 6 days ago
Harbour Air Seaplanes
Fri, 28 Aug - Fri, 4 Sept
CXH
Vancouver
LKE
Seattle
S$619 Return, found 6 days ago
S$619
Return
found 6 days ago
Select Harbour Air Seaplanes flight, departing Fri, 28 Aug from Vancouver to Seattle, returning Fri, 4 Sept, priced at S$619 found 6 days ago
Harbour Air Seaplanes
Fri, 28 Aug - Fri, 4 Sept
CXH
Vancouver
LKE
Seattle
S$625 Return, found 6 days ago
S$625
Return
found 6 days ago
Select Harbour Air Seaplanes flight, departing Fri, 28 Aug from Vancouver to Seattle, returning Fri, 4 Sept, priced at S$625 found 6 days ago
Harbour Air Seaplanes
Sat, 22 Aug - Sun, 23 Aug
CXH
Vancouver
LKE
Seattle
S$637 Return, found 6 days ago
S$637
Return
found 6 days ago
Select Harbour Air Seaplanes flight, departing Sat, 22 Aug from Vancouver to Seattle, returning Sun, 23 Aug, priced at S$637 found 6 days ago
Harbour Air Seaplanes
Thu, 6 Aug - Mon, 10 Aug
CXH
Vancouver
LKE
Seattle
S$647 Return, found 18 hours ago
S$647
Return
found 18 hours ago
Select Harbour Air Seaplanes flight, departing Thu, 6 Aug from Vancouver to Seattle, returning Mon, 10 Aug, priced at S$647 found 18 hours ago
Harbour Air Seaplanes
Thu, 30 Jul - Sat, 1 Aug
CXH
Vancouver
LKE
Seattle
S$648 Return, found 2 days ago
S$648
Return
found 2 days ago
Select Harbour Air Seaplanes flight, departing Thu, 30 Jul from Vancouver to Seattle, returning Sat, 1 Aug, priced at S$648 found 2 days ago
Harbour Air Seaplanes
Sun, 2 Aug - Tue, 4 Aug
CXH
Vancouver
LKE
Seattle
S$659 Return, found 6 days ago
S$659
Return
found 6 days ago
Select Harbour Air Seaplanes flight, departing Sun, 2 Aug from Vancouver to Seattle, returning Tue, 4 Aug, priced at S$659 found 6 days ago
Harbour Air Seaplanes
Thu, 30 Jul - Sat, 1 Aug
CXH
Vancouver
LKE
Seattle
S$660 Return, found 2 days ago
S$660
Return
found 2 days ago
Select Harbour Air Seaplanes flight, departing Thu, 30 Jul from Vancouver to Seattle, returning Sat, 1 Aug, priced at S$660 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.

Air Canada
Fri, 5 Feb - Fri, 12 Feb
SIN
Singapore
SEA
Seattle
S$1,000 Return, found 19 hours ago
S$1,000
Return
found 19 hours ago
Select Air Canada flight, departing Fri, 5 Feb from Singapore to Seattle, returning Fri, 12 Feb, priced at S$1,000 found 19 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 S$278.
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$278 and S$1,000. Many lucky travellers nabbed one-way tickets from Vancouver (CXH) for only S$139.
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$278 to S$1,000.
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
Harbour Air Seaplanes, Hahn Air Technologies
Roundtrip price
from S$278
King County Flights Information
*Available to Expedia members.