Cheap Flights to Jefferson County | Popular Routes to Jefferson County from HK$2,935

View HK$2,935 flight on Thu, 26 Feb 2026Opens 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

  • notification illustration

    Be in the know

    Get alerts if flight prices drop or rise*
  • deals illustration

    Book smarter

    Save up to 35% on select hotels after you book a flight*
  • trophy illustration

    Earn twice

    Earn your airline miles on top of our rewards
    Sign in

Cheap round-trip flights to Jefferson County

Prices were available within the past 7 days and start at HK$2,935 for one-way flights and HK$4,782 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Thu, 26 Feb - Wed, 11 Mar
TPE
Taipei
SEA
Seattle
HK$4,782 Return, found 1 hour ago
HK$4,782
Return
found 1 hour ago
Select Delta flight, departing Thu, 26 Feb from Taipei to Seattle, returning Wed, 11 Mar, priced at HK$4,782 found 1 hour ago
Cathay Pacific
Sat, 4 Apr - Mon, 13 Apr
TPE
Taipei
SEA
Seattle
HK$4,798 Return, found 7 hours ago
HK$4,798
Return
found 7 hours ago
Select Cathay Pacific flight, departing Sat, 4 Apr from Taipei to Seattle, returning Mon, 13 Apr, priced at HK$4,798 found 7 hours ago
United
Thu, 26 Feb - Wed, 11 Mar
TPE
Taipei
SEA
Seattle
HK$4,826 Return, found 1 hour ago
HK$4,826
Return
found 1 hour ago
Select United flight, departing Thu, 26 Feb from Taipei to Seattle, returning Wed, 11 Mar, priced at HK$4,826 found 1 hour ago
Delta
Tue, 1 Sept - Tue, 8 Sept
HKG
Hong Kong SAR
SEA
Seattle
HK$4,965 Return, found 5 hours ago
HK$4,965
Return
found 5 hours ago
Select Delta flight, departing Tue, 1 Sept from Hong Kong SAR to Seattle, returning Tue, 8 Sept, priced at HK$4,965 found 5 hours ago
Philippine Airlines
Mon, 6 Jul - Fri, 10 Jul
HKG
Hong Kong SAR
SEA
Seattle
HK$4,993 Return, found 3 days ago
HK$4,993
Return
found 3 days ago
Select Philippine Airlines flight, departing Mon, 6 Jul from Hong Kong SAR to Seattle, returning Fri, 10 Jul, priced at HK$4,993 found 3 days ago
Hainan Airlines
Mon, 9 Mar - Sat, 21 Mar
HKG
Hong Kong SAR
SEA
Seattle
HK$5,097 Return, found 1 day ago
HK$5,097
Return
found 1 day ago
Select Hainan Airlines flight, departing Mon, 9 Mar from Hong Kong SAR to Seattle, returning Sat, 21 Mar, priced at HK$5,097 found 1 day ago
Air Canada
Thu, 2 Jul - Thu, 30 Jul
HKG
Hong Kong SAR
SEA
Seattle
HK$5,352 Return, found 2 hours ago
HK$5,352
Return
found 2 hours ago
Select Air Canada flight, departing Thu, 2 Jul from Hong Kong SAR to Seattle, returning Thu, 30 Jul, priced at HK$5,352 found 2 hours ago
Korean Air
Wed, 1 Apr - Mon, 6 Apr
HKG
Hong Kong SAR
SEA
Seattle
HK$5,429 Return, found 1 hour ago
HK$5,429
Return
found 1 hour ago
Select Korean Air flight, departing Wed, 1 Apr from Hong Kong SAR to Seattle, returning Mon, 6 Apr, priced at HK$5,429 found 1 hour ago
Asiana Airlines
Fri, 6 Feb - Tue, 12 May
HKG
Hong Kong SAR
SEA
Seattle
HK$5,495 Return, found 2 hours ago
HK$5,495
Return
found 2 hours ago
Select Asiana Airlines flight, departing Fri, 6 Feb from Hong Kong SAR to Seattle, returning Tue, 12 May, priced at HK$5,495 found 2 hours ago
China Airlines
Thu, 2 Apr - Tue, 7 Apr
HKG
Hong Kong SAR
SEA
Seattle
HK$5,515 Return, found 2 hours ago
HK$5,515
Return
found 2 hours ago
Select China Airlines flight, departing Thu, 2 Apr from Hong Kong SAR to Seattle, returning Tue, 7 Apr, priced at HK$5,515 found 2 hours ago

About Jefferson County

Expedia offers flights to Jefferson County to meet every traveller'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, HK$4,782 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 HK$4,782 and HK$5,515. If you were flying one way from Taipei (TPE), you could have gotten a great deal from just HK$2,935.
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 HK$4,782 and HK$5,515. 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 13ºC and 18ºC.
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, return, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Tue, 1 Sept - Tue, 8 Sept
HKG
Hong Kong SAR
SEA
Seattle
HK$4,965 Return, found 5 hours ago
HK$4,965
Return
found 5 hours ago
Select Delta flight, departing Tue, 1 Sept from Hong Kong SAR to Seattle, returning Tue, 8 Sept, priced at HK$4,965 found 5 hours ago
*Available to Expedia members.