Cheap Flights to King County from ￥49,930

Popular airlines to King County

  • Alaska Airlines

    Alaska Airlines

  • Delta

    Delta

  • American Airlines

    American Airlines

  • United

    United

  • Frontier Airlines

    Frontier Airlines

  • Southwest Airlines

    Southwest Airlines

  • JetBlue Airways

    JetBlue Airways

    notification illustration

    Be in the know

    Get alerts if flight prices drop or rise*
    deals illustration

    Book smarter

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

    Earn twice

    Earn your airline miles on top of our rewards
    Sign in

Top Cities to Visit in King County

Seattle which includes landscape views, night scenes and a city
FlightsFlights

Seattle

Seattle

How much is the cheapest flight to King County?

Prices were available within the past 7 days and start at ￥49,930 for one-way flights and ￥68,350 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Asiana Airlines
Mon, Oct 6 - Fri, Oct 31
ICN
Seoul
SEA
Seattle
￥68,350 Roundtrip, found 6 days ago
￥68,350
Roundtrip
found 6 days ago
Select Asiana Airlines flight, departing Mon, Oct 6 from Seoul to Seattle, returning Fri, Oct 31, priced at ￥68,350 found 6 days ago
Hawaiian Airlines
Sun, Dec 7 - Wed, Dec 10
ICN
Seoul
SEA
Seattle
￥68,410 Roundtrip, found 2 days ago
￥68,410
Roundtrip
found 2 days ago
Select Hawaiian Airlines flight, departing Sun, Dec 7 from Seoul to Seattle, returning Wed, Dec 10, priced at ￥68,410 found 2 days ago
United
Wed, Oct 15 - Wed, Oct 22
ICN
Seoul
SEA
Seattle
￥69,240 Roundtrip, found 2 days ago
￥69,240
Roundtrip
found 2 days ago
Select United flight, departing Wed, Oct 15 from Seoul to Seattle, returning Wed, Oct 22, priced at ￥69,240 found 2 days ago
Alaska Airlines
Wed, Oct 22 - Wed, Oct 29
ICN
Seoul
SEA
Seattle
￥69,490 Roundtrip, found 14 hours ago
￥69,490
Roundtrip
found 14 hours ago
Select Alaska Airlines flight, departing Wed, Oct 22 from Seoul to Seattle, returning Wed, Oct 29, priced at ￥69,490 found 14 hours ago
Korean Air
Thu, Oct 9 - Thu, Oct 16
ICN
Seoul
SEA
Seattle
￥72,110 Roundtrip, found 1 hour ago
￥72,110
Roundtrip
found 1 hour ago
Select Korean Air flight, departing Thu, Oct 9 from Seoul to Seattle, returning Thu, Oct 16, priced at ￥72,110 found 1 hour ago
Delta
Thu, Oct 9 - Thu, Oct 16
ICN
Seoul
SEA
Seattle
￥72,110 Roundtrip, found 1 hour ago
￥72,110
Roundtrip
found 1 hour ago
Select Delta flight, departing Thu, Oct 9 from Seoul to Seattle, returning Thu, Oct 16, priced at ￥72,110 found 1 hour ago
Air Canada
Sun, Sep 21 - Thu, Sep 25
ICN
Seoul
SEA
Seattle
￥82,170 Roundtrip, just found
￥82,170
Roundtrip
just found
Select Air Canada flight, departing Sun, Sep 21 from Seoul to Seattle, returning Thu, Sep 25, priced at ￥82,170 just found
American Airlines
Thu, Oct 23 - Mon, Nov 3
ICN
Seoul
SEA
Seattle
￥85,330 Roundtrip, found 1 hour ago
￥85,330
Roundtrip
found 1 hour ago
Select American Airlines flight, departing Thu, Oct 23 from Seoul to Seattle, returning Mon, Nov 3, priced at ￥85,330 found 1 hour ago
Air Canada
Mon, Dec 15 - Thu, Dec 25
NRT
Tokyo
SEA
Seattle
￥87,720 Roundtrip, found 16 hours ago
￥87,720
Roundtrip
found 16 hours ago
Select Air Canada flight, departing Mon, Dec 15 from Tokyo to Seattle, returning Thu, Dec 25, priced at ￥87,720 found 16 hours ago
American Airlines
Wed, Oct 15 - Wed, Oct 22
HND
Tokyo
SEA
Seattle
￥89,240 Roundtrip, found 11 hours ago
￥89,240
Roundtrip
found 11 hours ago
Select American Airlines flight, departing Wed, Oct 15 from Tokyo to Seattle, returning Wed, Oct 22, priced at ￥89,240 found 11 hours ago

2025 年 5 月 13 日、新規開設*

ハワイアン航空はこのたび、東京の成田国際空港からシアトルへの直行便を新たに開設し、毎日運航することを発表しました。

豊かな緑に包まれたその景観から「エメラルド シティ」と呼ばれるシアトルは、美しい自然と現代的な快適さをともに楽しみたい人の旅行先として人気の都市です。

シアトルを象徴するタワー、スペース ニードルからの素晴らしい眺めを堪能し、パイク プレイス マーケットの知られざる魅力や誰もが知る見どころを探訪して、ケリー パークで一息ついたら、夕暮れ時の街並みを眺めましょう。ピュージェット湾でのホエールウォッチングもおすすめです。

シアトルの空港は米国国内線のハブ空港でもあるため、米国各地への旅もさらにスムーズになります。

*政府の承認が必要となります。

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 ￥68,350.
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 ￥68,350 and ￥89,240. Many lucky travelers nabbed one-way tickets from Tokyo (NRT) for only ￥49,930.
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.

How much is a plane ticket to King County?
In the last seven days, plane fares to King County varied from ￥68,350 to ￥89,240.
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.

Air Canada
Mon, Dec 15 - Thu, Dec 25
NRT
Tokyo
SEA
Seattle
￥87,720 Roundtrip, found 16 hours ago
￥87,720
Roundtrip
found 16 hours ago
Select Air Canada flight, departing Mon, Dec 15 from Tokyo to Seattle, returning Thu, Dec 25, priced at ￥87,720 found 16 hours ago
*Available to Expedia members.