Cheap Flights to King County from NT$4,185

View NT$4,185 flight on Fri, 2026/5/15Opens 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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How much is the cheapest flight to King County?

Prices were available within the past 7 days and start at NT$4,185 for one-way flights and NT$8,875 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Fri, May 15 - Sun, May 17
SAT
San Antonio
SEA
Seattle
NT$8,875 Roundtrip, found 20 hours ago
NT$8,875
Roundtrip
found 20 hours ago
Select Delta flight, departing Fri, May 15 from San Antonio to Seattle, returning Sun, May 17, priced at NT$8,875 found 20 hours ago
United
Fri, May 1 - Sun, May 3
SAT
San Antonio
SEA
Seattle
NT$13,808 Roundtrip, found 22 hours ago
NT$13,808
Roundtrip
found 22 hours ago
Select United flight, departing Fri, May 1 from San Antonio to Seattle, returning Sun, May 3, priced at NT$13,808 found 22 hours ago
American Airlines
Fri, May 1 - Sun, May 3
SAT
San Antonio
SEA
Seattle
NT$14,125 Roundtrip, found 22 hours ago
NT$14,125
Roundtrip
found 22 hours ago
Select American Airlines flight, departing Fri, May 1 from San Antonio to Seattle, returning Sun, May 3, priced at NT$14,125 found 22 hours ago
Delta
Thu, May 7 - Tue, Oct 6
TPE
Taipei
SEA
Seattle
NT$20,623 Roundtrip, found 3 hours ago
NT$20,623
Roundtrip
found 3 hours ago
Select Delta flight, departing Thu, May 7 from Taipei to Seattle, returning Tue, Oct 6, priced at NT$20,623 found 3 hours ago
Asiana Airlines
Tue, Feb 2 - Tue, Feb 16
TPE
Taipei
SEA
Seattle
NT$27,324 Roundtrip, found 1 hour ago
NT$27,324
Roundtrip
found 1 hour ago
Select Asiana Airlines flight, departing Tue, Feb 2 from Taipei to Seattle, returning Tue, Feb 16, priced at NT$27,324 found 1 hour ago
Korean Air
Wed, Jun 10 - Wed, Sep 9
TPE
Taipei
SEA
Seattle
NT$27,324 Roundtrip, just found
NT$27,324
Roundtrip
just found
Select Korean Air flight, departing Wed, Jun 10 from Taipei to Seattle, returning Wed, Sep 9, priced at NT$27,324 just found
All Nippon Airways
Sun, Sep 27 - Mon, Oct 12
TSA
Taipei
SEA
Seattle
NT$28,539 Roundtrip, found 4 days ago
NT$28,539
Roundtrip
found 4 days ago
Select All Nippon Airways flight, departing Sun, Sep 27 from Taipei to Seattle, returning Mon, Oct 12, priced at NT$28,539 found 4 days ago
Philippine Airlines
Mon, Oct 26 - Mon, Nov 16
TPE
Taipei
SEA
Seattle
NT$28,665 Roundtrip, found 1 day ago
NT$28,665
Roundtrip
found 1 day ago
Select Philippine Airlines flight, departing Mon, Oct 26 from Taipei to Seattle, returning Mon, Nov 16, priced at NT$28,665 found 1 day ago
United
Wed, Oct 28 - Tue, Nov 3
KHH
Kaohsiung
SEA
Seattle
NT$28,884 Roundtrip, found 1 day ago
NT$28,884
Roundtrip
found 1 day ago
Select United flight, departing Wed, Oct 28 from Kaohsiung to Seattle, returning Tue, Nov 3, priced at NT$28,884 found 1 day ago
Asiana Airlines
Thu, May 14 - Wed, May 20
PVG
Shanghai
SEA
Seattle
NT$29,474 Roundtrip, found 6 days ago
NT$29,474
Roundtrip
found 6 days ago
Select Asiana Airlines flight, departing Thu, May 14 from Shanghai to Seattle, returning Wed, May 20, priced at NT$29,474 found 6 days ago

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.

Delta
Thu, May 7 - Tue, Oct 6
TPE
Taipei
SEA
Seattle
NT$20,623 Roundtrip, found 3 hours ago
NT$20,623
Roundtrip
found 3 hours ago
Select Delta flight, departing Thu, May 7 from Taipei to Seattle, returning Tue, Oct 6, priced at NT$20,623 found 3 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 NT$8,875.
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 NT$8,875 and NT$29,474. Many lucky travelers nabbed one-way tickets from San Antonio (SAT) for only NT$4,185.
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 NT$8,875 to NT$29,474.
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.

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