Cheap Flights to King County from ₩124,800

Popular airlines to King County

  • Alaska Airlines

    Alaska Airlines

  • Delta

    Delta

  • American Airlines

    American Airlines

  • United

    United

  • Southwest Airlines

    Southwest Airlines

  • Frontier Airlines

    Frontier Airlines

  • Air Canada

    Air Canada

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How much is the cheapest flight to King County?

Prices were available within the past 7 days and start at ₩124,800 for one-way flights and ₩197,300 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Hawaiian Airlines
Fri, Nov 14 - Tue, Nov 18
ONT
Ontario
SEA
Seattle
₩197,300 Roundtrip, found 21 hours ago
₩197,300
Roundtrip
found 21 hours ago
Select Hawaiian Airlines flight, departing Fri, Nov 14 from Ontario to Seattle, returning Tue, Nov 18, priced at ₩197,300 found 21 hours ago
Delta
Thu, Oct 30 - Sat, Nov 1
ONT
Ontario
SEA
Seattle
₩250,400 Roundtrip, found 3 days ago
₩250,400
Roundtrip
found 3 days ago
Select Delta flight, departing Thu, Oct 30 from Ontario to Seattle, returning Sat, Nov 1, priced at ₩250,400 found 3 days ago
United
Thu, Oct 30 - Sat, Nov 1
ONT
Ontario
SEA
Seattle
₩348,600 Roundtrip, found 3 days ago
₩348,600
Roundtrip
found 3 days ago
Select United flight, departing Thu, Oct 30 from Ontario to Seattle, returning Sat, Nov 1, priced at ₩348,600 found 3 days ago
Hawaiian Airlines
Thu, Oct 23 - Sun, Oct 26
ICN
Seoul
SEA
Seattle
₩478,300 Roundtrip, found 2 days ago
₩478,300
Roundtrip
found 2 days ago
Select Hawaiian Airlines flight, departing Thu, Oct 23 from Seoul to Seattle, returning Sun, Oct 26, priced at ₩478,300 found 2 days ago
Alaska Airlines
Thu, Oct 23 - Fri, Oct 31
ICN
Seoul
SEA
Seattle
₩478,300 Roundtrip, found 2 days ago
₩478,300
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Thu, Oct 23 from Seoul to Seattle, returning Fri, Oct 31, priced at ₩478,300 found 2 days ago
Hawaiian Airlines
Mon, Oct 13 - Mon, Oct 13
FCA
Kalispell
SEA
Seattle
₩565,300 Roundtrip, found 1 day ago
₩565,300
Roundtrip
found 1 day ago
Select Hawaiian Airlines flight, departing Mon, Oct 13 from Kalispell to Seattle, returning Mon, Oct 13, priced at ₩565,300 found 1 day ago
American Airlines
Fri, Oct 24 - Sat, Oct 25
ONT
Ontario
SEA
Seattle
₩578,100 Roundtrip, found 1 day ago
₩578,100
Roundtrip
found 1 day ago
Select American Airlines flight, departing Fri, Oct 24 from Ontario to Seattle, returning Sat, Oct 25, priced at ₩578,100 found 1 day ago
Korean Air
Mon, Oct 27 - Tue, Oct 28
ICN
Seoul
SEA
Seattle
₩628,100 Roundtrip, found 10 hours ago
₩628,100
Roundtrip
found 10 hours ago
Select Korean Air flight, departing Mon, Oct 27 from Seoul to Seattle, returning Tue, Oct 28, priced at ₩628,100 found 10 hours ago
Air Canada
Tue, Dec 16 - Fri, Feb 13
ICN
Seoul
SEA
Seattle
₩770,600 Roundtrip, found 5 days ago
₩770,600
Roundtrip
found 5 days ago
Select Air Canada flight, departing Tue, Dec 16 from Seoul to Seattle, returning Fri, Feb 13, priced at ₩770,600 found 5 days ago
Korean Air
Sun, Apr 5 - Sat, Apr 18
PUS
Busan
SEA
Seattle
₩1,032,900 Roundtrip, found 2 days ago
₩1,032,900
Roundtrip
found 2 days ago
Select Korean Air flight, departing Sun, Apr 5 from Busan to Seattle, returning Sat, Apr 18, priced at ₩1,032,900 found 2 days ago

About King County

Expedia offers flights to King County to meet every traveler'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 ₩197,300.
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 ₩197,300 and ₩1,032,900. Many lucky travelers nabbed one-way tickets from Ontario (ONT) for only ₩124,800.
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 traveling 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 ₩197,300 to ₩1,032,900.
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 55ºF to 75ºF 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, round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Hawaiian Airlines
Thu, Oct 23 - Sun, Oct 26
ICN
Seoul
SEA
Seattle
₩478,300 Roundtrip, found 2 days ago
₩478,300
Roundtrip
found 2 days ago
Select Hawaiian Airlines flight, departing Thu, Oct 23 from Seoul to Seattle, returning Sun, Oct 26, priced at ₩478,300 found 2 days ago
*Available to Expedia members.