Cheap Flights to Jefferson County | Popular Routes to Jefferson County from HK$2,819

View HK$2,819 flight on Thu, 12 Mar 2026Opens in a new window

Popular airlines to Jefferson County

  • Alaska Airlines

  • Delta

  • American Airlines

  • United

  • Southwest Airlines

  • Frontier Airlines

  • Air Canada

  • Be in the know

    Get alerts if flight prices drop or rise*

  • Book smarter

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

  • 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$2,819 for one-way flights and HK$4,152 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Thu, 25 Jun - Wed, 15 Jul
HKG
Hong Kong SAR
SEA
Seattle
HK$4,152 Return, found 3 hours ago
HK$4,152
Return
found 3 hours ago
Select Air Canada flight, departing Thu, 25 Jun from Hong Kong SAR to Seattle, returning Wed, 15 Jul, priced at HK$4,152 found 3 hours ago
Delta
Mon, 1 Jun - Tue, 28 Jul
HKG
Hong Kong SAR
SEA
Seattle
HK$4,316 Return, found 3 days ago
HK$4,316
Return
found 3 days ago
Select Delta flight, departing Mon, 1 Jun from Hong Kong SAR to Seattle, returning Tue, 28 Jul, priced at HK$4,316 found 3 days ago
United
Fri, 19 Jun - Tue, 4 Aug
HKG
Hong Kong SAR
SEA
Seattle
HK$4,546 Return, just found
HK$4,546
Return
just found
Select United flight, departing Fri, 19 Jun from Hong Kong SAR to Seattle, returning Tue, 4 Aug, priced at HK$4,546 just found
Philippine Airlines
Wed, 23 Sept - Thu, 8 Oct
HKG
Hong Kong SAR
SEA
Seattle
HK$4,599 Return, found 11 hours ago
HK$4,599
Return
found 11 hours ago
Select Philippine Airlines flight, departing Wed, 23 Sept from Hong Kong SAR to Seattle, returning Thu, 8 Oct, priced at HK$4,599 found 11 hours ago
Cathay Pacific
Wed, 24 Jun - Tue, 14 Jul
HKG
Hong Kong SAR
SEA
Seattle
HK$4,797 Return, found 4 hours ago
HK$4,797
Return
found 4 hours ago
Select Cathay Pacific flight, departing Wed, 24 Jun from Hong Kong SAR to Seattle, returning Tue, 14 Jul, priced at HK$4,797 found 4 hours ago
Asiana Airlines
Tue, 21 Apr - Mon, 4 May
HKG
Hong Kong SAR
SEA
Seattle
HK$5,100 Return, found 3 days ago
HK$5,100
Return
found 3 days ago
Select Asiana Airlines flight, departing Tue, 21 Apr from Hong Kong SAR to Seattle, returning Mon, 4 May, priced at HK$5,100 found 3 days ago
China Airlines
Tue, 24 Nov - Sun, 29 Nov
HKG
Hong Kong SAR
SEA
Seattle
HK$5,120 Return, found 2 days ago
HK$5,120
Return
found 2 days ago
Select China Airlines flight, departing Tue, 24 Nov from Hong Kong SAR to Seattle, returning Sun, 29 Nov, priced at HK$5,120 found 2 days ago
EVA Airways
Tue, 17 Mar - Wed, 2 Dec
HKG
Hong Kong SAR
SEA
Seattle
HK$5,332 Return, found 2 hours ago
HK$5,332
Return
found 2 hours ago
Select EVA Airways flight, departing Tue, 17 Mar from Hong Kong SAR to Seattle, returning Wed, 2 Dec, priced at HK$5,332 found 2 hours ago
Korean Air
Wed, 29 Apr - Tue, 5 May
HKG
Hong Kong SAR
SEA
Seattle
HK$5,406 Return, found 6 hours ago
HK$5,406
Return
found 6 hours ago
Select Korean Air flight, departing Wed, 29 Apr from Hong Kong SAR to Seattle, returning Tue, 5 May, priced at HK$5,406 found 6 hours ago
STARLUX Airlines
Thu, 21 May - Wed, 10 Jun
HKG
Hong Kong SAR
SEA
Seattle
HK$5,422 Return, found 5 hours ago
HK$5,422
Return
found 5 hours ago
Select STARLUX Airlines flight, departing Thu, 21 May from Hong Kong SAR to Seattle, returning Wed, 10 Jun, priced at HK$5,422 found 5 hours ago

Airports in Jefferson County

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Seattle - Tacoma Intl. SEA. Cheapest option available. Flights from HK$2,894
SEA
Seattle - Tacoma Intl.
Cheapest
Flights from HK$2,894

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.

Air Canada
Thu, 25 Jun - Wed, 15 Jul
HKG
Hong Kong SAR
SEA
Seattle
HK$4,152 Return, found 3 hours ago
HK$4,152
Return
found 3 hours ago
Select Air Canada flight, departing Thu, 25 Jun from Hong Kong SAR to Seattle, returning Wed, 15 Jul, priced at HK$4,152 found 3 hours ago

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$4,152 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$4,152 and HK$5,422. If you were flying one way from Hong Kong SAR (HKG), you could have gotten a great deal from just HK$2,819.
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$4,152 and HK$5,422. 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.

Book with confidence

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.
About Jefferson County

Explore a world of travel with Expedia

*Available to Expedia members.