Cheap Flights to Jefferson County from ₩579,700

View ₩579,700 flight on Tue, Dec 16, 2025Opens in a new window

Popular airlines to Jefferson 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 Jefferson County?

Prices were available within the past 7 days and start at ₩579,700 for one-way flights and ₩810,500 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Mon, Mar 16 - Fri, Mar 20
ICN
Seoul
SEA
Seattle
₩810,500 Roundtrip, found 6 hours ago
₩810,500
Roundtrip
found 6 hours ago
Select Air Canada flight, departing Mon, Mar 16 from Seoul to Seattle, returning Fri, Mar 20, priced at ₩810,500 found 6 hours ago
United
Thu, Dec 25 - Tue, Jan 20
ICN
Seoul
SEA
Seattle
₩821,200 Roundtrip, found 6 hours ago
₩821,200
Roundtrip
found 6 hours ago
Select United flight, departing Thu, Dec 25 from Seoul to Seattle, returning Tue, Jan 20, priced at ₩821,200 found 6 hours ago
American Airlines
Tue, Feb 3 - Fri, Feb 6
ICN
Seoul
SEA
Seattle
₩938,700 Roundtrip, found 3 days ago
₩938,700
Roundtrip
found 3 days ago
Select American Airlines flight, departing Tue, Feb 3 from Seoul to Seattle, returning Fri, Feb 6, priced at ₩938,700 found 3 days ago
Singapore Airlines
Thu, Feb 12 - Thu, Mar 5
SGN
Ho Chi Minh City
SEA
Seattle
₩993,000 Roundtrip, found 1 day ago
₩993,000
Roundtrip
found 1 day ago
Select Singapore Airlines flight, departing Thu, Feb 12 from Ho Chi Minh City to Seattle, returning Thu, Mar 5, priced at ₩993,000 found 1 day ago
Hainan Airlines
Wed, Jan 28 - Thu, Feb 26
ICN
Seoul
SEA
Seattle
₩999,100 Roundtrip, found 4 days ago
₩999,100
Roundtrip
found 4 days ago
Select Hainan Airlines flight, departing Wed, Jan 28 from Seoul to Seattle, returning Thu, Feb 26, priced at ₩999,100 found 4 days ago
Hawaiian Airlines
Sun, Dec 28 - Thu, Jan 1
ICN
Seoul
SEA
Seattle
₩1,004,500 Roundtrip, found 5 hours ago
₩1,004,500
Roundtrip
found 5 hours ago
Select Hawaiian Airlines flight, departing Sun, Dec 28 from Seoul to Seattle, returning Thu, Jan 1, priced at ₩1,004,500 found 5 hours ago
Delta
Wed, Dec 24 - Thu, Jan 8
ICN
Seoul
SEA
Seattle
₩1,006,900 Roundtrip, found 7 hours ago
₩1,006,900
Roundtrip
found 7 hours ago
Select Delta flight, departing Wed, Dec 24 from Seoul to Seattle, returning Thu, Jan 8, priced at ₩1,006,900 found 7 hours ago
Korean Air
Sun, Dec 21 - Mon, Jan 19
ICN
Seoul
SEA
Seattle
₩1,072,300 Roundtrip, found 6 hours ago
₩1,072,300
Roundtrip
found 6 hours ago
Select Korean Air flight, departing Sun, Dec 21 from Seoul to Seattle, returning Mon, Jan 19, priced at ₩1,072,300 found 6 hours ago
Japan Airlines
Tue, Feb 10 - Tue, Mar 3
SGN
Ho Chi Minh City
SEA
Seattle
₩1,206,600 Roundtrip, found 1 day ago
₩1,206,600
Roundtrip
found 1 day ago
Select Japan Airlines flight, departing Tue, Feb 10 from Ho Chi Minh City to Seattle, returning Tue, Mar 3, priced at ₩1,206,600 found 1 day ago
All Nippon Airways
Wed, May 20 - Wed, Jun 10
SGN
Ho Chi Minh City
SEA
Seattle
₩1,208,200 Roundtrip, found 22 hours ago
₩1,208,200
Roundtrip
found 22 hours ago
Select All Nippon Airways flight, departing Wed, May 20 from Ho Chi Minh City to Seattle, returning Wed, Jun 10, priced at ₩1,208,200 found 22 hours ago

About Jefferson County

Expedia offers flights to Jefferson County to meet every traveler's needs. Whatever your flight need - Expedia has the flight for you. So choose from flights to Jefferson 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 Jefferson County that have flexible change policies?
When it comes to flying these days, flexibility is key. That's why we've added a "No change fee" search function to help you track down flexible, affordable fares to Jefferson County. It's near the top left of your screen right underneath the "Flexible change policies" heading.
Which airlines fly to Jefferson County?
Settle on your travel dates and then take off towards Jefferson County with one of these leading airlines:

  • Alaska Airlines - 8,781 flights to or near Jefferson County each month, including 8,781 flights to Seattle - Tacoma Intl. Airport (SEA) per month.
  • Delta Air Lines - 4,186 flights to or near Jefferson County each month, including 4,186 flights to Seattle - Tacoma Intl. Airport (SEA) per month.
  • United Airlines - 828 flights to or near Jefferson County each month, including 828 flights to Seattle - Tacoma Intl. Airport (SEA) per month.

How can I find cheap tickets to Jefferson County?
To nab a terrific deal to Jefferson County, book in advance. Also make use of Expedia's "flexible dates" feature at the top of your search results. This will compare prices for nearby days. In the last seven days, ₩810,500 was the best price for a flight to Jefferson County.
How much is a flight to Jefferson County?
The cost of a round-trip flight to Jefferson County in the last seven days ranged between ₩810,500 and ₩1,208,200. If you were flying one way from Seoul (ICN), you could have gotten a great deal from just ₩579,700.
What are the most popular airports to fly into in Jefferson County?
The primary gateway to Jefferson County, roughly 15,456 flights land at Seattle - Tacoma Intl. Airport (SEA) each month. Scout around for an unbeatable deal, lock in your fare and get ready to discover this amazing region.
When is the cheapest time to fly to Jefferson County?
Fly out on a Tuesday to boost your odds of securing the cheapest flight to Jefferson County. Mondays are usually the second most affordable day to depart. Saturday is generally the most expensive day to fly anywhere.
How much is a plane ticket to Jefferson County?
In the last seven days, plane tickets to Jefferson County ranged between ₩810,500 and ₩1,208,200. Prices generally depend on the departure time, cabin class, airline and how early you make your booking.
What is the best time to go to Jefferson County?
If you'd love to check out Jefferson County's leading city at its busiest, visit Port Townsend sometime during March, April and June. Similar to most places in the Northern Hemisphere, summer here begins June 20, with average temperatures of between 55ºF and 65ºF.
What months are the cheapest to book a flight to Jefferson County?
The cheapest month to land a fabulous deal to Jefferson County is February, whereas prices are at their highest in December. Avoid this month if you want to save your dollars.

Trending flights to Jefferson 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, Mar 16 - Fri, Mar 20
ICN
Seoul
SEA
Seattle
₩810,500 Roundtrip, found 6 hours ago
₩810,500
Roundtrip
found 6 hours ago
Select Air Canada flight, departing Mon, Mar 16 from Seoul to Seattle, returning Fri, Mar 20, priced at ₩810,500 found 6 hours ago
*Available to Expedia members.