Flight Destinations in Jefferson County

View ฿4,895 flight on Wed, 3 Jun 2026Opens in a new window

Flight 1

Flight 2

Popular airlines to Jefferson County

  • Alaska Airlines

  • American Airlines

  • Delta

  • United

  • Southwest Airlines

  • Frontier Airlines

  • JetBlue Airways

  • Be in the know

    Get alerts if flight prices drop or rise*

  • Book smarter

    Save up to 40% 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 ฿4,895 for one-way flights and ฿9,785 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Wed, 3 Jun - Wed, 10 Jun
BOS
Boston
SEA
Seattle
฿9,785 Return, found 2 days ago
฿9,785
Return
found 2 days ago
Select Delta flight, departing Wed, 3 Jun from Boston to Seattle, returning Wed, 10 Jun, priced at ฿9,785 found 2 days ago
American Airlines
Wed, 3 Jun - Wed, 10 Jun
BOS
Boston
SEA
Seattle
฿13,065 Return, found 2 days ago
฿13,065
Return
found 2 days ago
Select American Airlines flight, departing Wed, 3 Jun from Boston to Seattle, returning Wed, 10 Jun, priced at ฿13,065 found 2 days ago
United
Sat, 23 May - Wed, 27 May
BOS
Boston
SEA
Seattle
฿13,395 Return, found 1 day ago
฿13,395
Return
found 1 day ago
Select United flight, departing Sat, 23 May from Boston to Seattle, returning Wed, 27 May, priced at ฿13,395 found 1 day ago
American Airlines
Sat, 23 May - Wed, 27 May
BOS
Boston
PAE
Seattle
฿18,340 Return, found 1 day ago
฿18,340
Return
found 1 day ago
Select American Airlines flight, departing Sat, 23 May from Boston to Seattle, returning Wed, 27 May, priced at ฿18,340 found 1 day ago
Korean Air
Mon, 15 Jun - Tue, 25 Aug
BKK
Bangkok
SEA
Seattle
฿22,805 Return, found 5 days ago
฿22,805
Return
found 5 days ago
Select Korean Air flight, departing Mon, 15 Jun from Bangkok to Seattle, returning Tue, 25 Aug, priced at ฿22,805 found 5 days ago
Korean Air
Tue, 2 Jun - Sun, 19 Jul
BKK
Bangkok
SEA
Seattle
฿26,370 Return, found 5 days ago
฿26,370
Return
found 5 days ago
Select Korean Air flight, departing Tue, 2 Jun from Bangkok to Seattle, returning Sun, 19 Jul, priced at ฿26,370 found 5 days ago
Asiana Airlines
Mon, 8 Jun - Tue, 15 Sept
BKK
Bangkok
SEA
Seattle
฿28,190 Return, found 4 days ago
฿28,190
Return
found 4 days ago
Select Asiana Airlines flight, departing Mon, 8 Jun from Bangkok to Seattle, returning Tue, 15 Sept, priced at ฿28,190 found 4 days ago
All Nippon Airways
Wed, 13 May - Wed, 12 Aug
BKK
Bangkok
SEA
Seattle
฿28,615 Return, found 13 hours ago
฿28,615
Return
found 13 hours ago
Select All Nippon Airways flight, departing Wed, 13 May from Bangkok to Seattle, returning Wed, 12 Aug, priced at ฿28,615 found 13 hours ago
Air Canada
Mon, 5 Oct - Tue, 20 Oct
BKK
Bangkok
SEA
Seattle
฿28,815 Return, found 4 days ago
฿28,815
Return
found 4 days ago
Select Air Canada flight, departing Mon, 5 Oct from Bangkok to Seattle, returning Tue, 20 Oct, priced at ฿28,815 found 4 days ago
EVA Airways
Fri, 15 May - Fri, 29 May
BKK
Bangkok
SEA
Seattle
฿30,220 Return, found 22 hours ago
฿30,220
Return
found 22 hours ago
Select EVA Airways flight, departing Fri, 15 May from Bangkok to Seattle, returning Fri, 29 May, priced at ฿30,220 found 22 hours ago

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.

Korean Air
Mon, 15 Jun - Tue, 25 Aug
BKK
Bangkok
SEA
Seattle
฿22,805 Return, found 5 days ago
฿22,805
Return
found 5 days ago
Select Korean Air flight, departing Mon, 15 Jun from Bangkok to Seattle, returning Tue, 25 Aug, priced at ฿22,805 found 5 days 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, ฿9,785 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 ฿9,785 and ฿30,220. If you were flying one way from Boston (BOS), you could have gotten a great deal from just ฿4,895.
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.
How much is a plane ticket to Jefferson County?
In the last seven days, plane tickets to Jefferson County ranged between ฿9,785 and ฿30,220. 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
*Available to Expedia members.