Cheap Flights to Jefferson County from ₩545,100

View ₩545,100 flight on Tue, Feb 17, 2026Opens in a new window

Popular airlines to Jefferson County

  • Alaska Airlines

  • Delta

  • American Airlines

  • United

  • Southwest Airlines

  • Frontier Airlines

  • 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 ₩545,100 for one-way flights and ₩675,700 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Fri, May 1 - Sun, May 10
ICN
Seoul
SEA
Seattle
₩675,700 Roundtrip, just found
₩675,700
Roundtrip
just found
Select Air Canada flight, departing Fri, May 1 from Seoul to Seattle, returning Sun, May 10, priced at ₩675,700 just found
United
Thu, Mar 12 - Tue, Mar 17
ICN
Seoul
SEA
Seattle
₩824,000 Roundtrip, just found
₩824,000
Roundtrip
just found
Select United flight, departing Thu, Mar 12 from Seoul to Seattle, returning Tue, Mar 17, priced at ₩824,000 just found
American Airlines
Tue, Feb 17 - Tue, Mar 3
ICN
Seoul
SEA
Seattle
₩830,000 Roundtrip, found 10 hours ago
₩830,000
Roundtrip
found 10 hours ago
Select American Airlines flight, departing Tue, Feb 17 from Seoul to Seattle, returning Tue, Mar 3, priced at ₩830,000 found 10 hours ago
Scoot
Tue, Feb 10 - Tue, Mar 3
CGK
Jakarta
SEA
Seattle
₩1,006,700 Roundtrip, found 11 hours ago
₩1,006,700
Roundtrip
found 11 hours ago
Select Scoot flight, departing Tue, Feb 10 from Jakarta to Seattle, returning Tue, Mar 3, priced at ₩1,006,700 found 11 hours ago
Hainan Airlines
Wed, Mar 11 - Thu, Mar 19
ICN
Seoul
SEA
Seattle
₩1,010,000 Roundtrip, found 6 days ago
₩1,010,000
Roundtrip
found 6 days ago
Select Hainan Airlines flight, departing Wed, Mar 11 from Seoul to Seattle, returning Thu, Mar 19, priced at ₩1,010,000 found 6 days ago
Philippine Airlines
Wed, Feb 4 - Wed, Feb 25
CGK
Jakarta
SEA
Seattle
₩1,019,300 Roundtrip, found 11 hours ago
₩1,019,300
Roundtrip
found 11 hours ago
Select Philippine Airlines flight, departing Wed, Feb 4 from Jakarta to Seattle, returning Wed, Feb 25, priced at ₩1,019,300 found 11 hours ago
Hawaiian Airlines
Fri, Apr 10 - Mon, Apr 13
ICN
Seoul
SEA
Seattle
₩1,030,300 Roundtrip, found 6 hours ago
₩1,030,300
Roundtrip
found 6 hours ago
Select Hawaiian Airlines flight, departing Fri, Apr 10 from Seoul to Seattle, returning Mon, Apr 13, priced at ₩1,030,300 found 6 hours ago
Alaska Airlines
Mon, Feb 2 - Fri, Feb 13
ICN
Seoul
SEA
Seattle
₩1,032,900 Roundtrip, found 5 days ago
₩1,032,900
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Mon, Feb 2 from Seoul to Seattle, returning Fri, Feb 13, priced at ₩1,032,900 found 5 days ago
Delta
Thu, May 28 - Wed, Jul 15
ICN
Seoul
SEA
Seattle
₩1,043,700 Roundtrip, found 4 days ago
₩1,043,700
Roundtrip
found 4 days ago
Select Delta flight, departing Thu, May 28 from Seoul to Seattle, returning Wed, Jul 15, priced at ₩1,043,700 found 4 days ago
Korean Air
Fri, May 1 - Tue, May 5
ICN
Seoul
SEA
Seattle
₩1,071,700 Roundtrip, just found
₩1,071,700
Roundtrip
just found
Select Korean Air flight, departing Fri, May 1 from Seoul to Seattle, returning Tue, May 5, priced at ₩1,071,700 just found

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, ₩675,700 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 ₩675,700 and ₩1,071,700. If you were flying one way from Jakarta (CGK), you could have gotten a great deal from just ₩545,100.
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 ₩675,700 and ₩1,071,700. 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
Fri, May 1 - Sun, May 10
ICN
Seoul
SEA
Seattle
₩675,700 Roundtrip, just found
₩675,700
Roundtrip
just found
Select Air Canada flight, departing Fri, May 1 from Seoul to Seattle, returning Sun, May 10, priced at ₩675,700 just found
*Available to Expedia members.