Cheap flights to Jefferson County

View €93 flight on Wed, 3 Jun 2026Opens in a new window

Flight 1

Flight 2

Popular airlines to Jefferson County

  • Alaska Airlines

  • Delta

  • American Airlines

  • United

  • Southwest Airlines

  • Frontier Airlines

  • JetBlue Airways

  • Be in the know

    Get alerts if flight prices drop or rise*

  • Book smarter

    Save up to 15% 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 €93 for one-way flights and €186 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Wed, 3 Jun - Sat, 6 Jun
PHX
Phoenix
SEA
Seattle
€186 Return, found 1 day ago
€186
Return
found 1 day ago
Select American Airlines flight, departing Wed, 3 Jun from Phoenix to Seattle, returning Sat, 6 Jun, priced at €186 found 1 day ago
Delta
Wed, 3 Jun - Sat, 6 Jun
PHX
Phoenix
SEA
Seattle
€186 Return, found 1 day ago
€186
Return
found 1 day ago
Select Delta flight, departing Wed, 3 Jun from Phoenix to Seattle, returning Sat, 6 Jun, priced at €186 found 1 day ago
Delta
Sat, 30 May - Sun, 31 May
PHX
Phoenix
SEA
Seattle
€195 Return, found 8 hours ago
€195
Return
found 8 hours ago
Select Delta flight, departing Sat, 30 May from Phoenix to Seattle, returning Sun, 31 May, priced at €195 found 8 hours ago
Delta
Thu, 28 May - Sun, 31 May
DEN
Denver
SEA
Seattle
€203 Return, found 1 day ago
€203
Return
found 1 day ago
Select Delta flight, departing Thu, 28 May from Denver to Seattle, returning Sun, 31 May, priced at €203 found 1 day ago
American Airlines
Wed, 3 Jun - Sat, 6 Jun
PHX
Phoenix
SEA
Seattle
€204 Return, found 1 day ago
€204
Return
found 1 day ago
Select American Airlines flight, departing Wed, 3 Jun from Phoenix to Seattle, returning Sat, 6 Jun, priced at €204 found 1 day ago
Delta
Thu, 28 May - Sun, 31 May
DEN
Denver
SEA
Seattle
€211 Return, found 1 day ago
€211
Return
found 1 day ago
Select Delta flight, departing Thu, 28 May from Denver to Seattle, returning Sun, 31 May, priced at €211 found 1 day ago
Delta
Sat, 16 May - Sun, 17 May
PHX
Phoenix
SEA
Seattle
€213 Return, found 5 days ago
€213
Return
found 5 days ago
Select Delta flight, departing Sat, 16 May from Phoenix to Seattle, returning Sun, 17 May, priced at €213 found 5 days ago
Delta
Sat, 30 May - Sun, 31 May
PHX
Phoenix
SEA
Seattle
€217 Return, found 8 hours ago
€217
Return
found 8 hours ago
Select Delta flight, departing Sat, 30 May from Phoenix to Seattle, returning Sun, 31 May, priced at €217 found 8 hours ago
United
Wed, 3 Jun - Sat, 6 Jun
PHX
Phoenix
SEA
Seattle
€233 Return, found 1 day ago
€233
Return
found 1 day ago
Select United flight, departing Wed, 3 Jun from Phoenix to Seattle, returning Sat, 6 Jun, priced at €233 found 1 day ago
JetBlue Airways
Fri, 29 May - Mon, 1 Jun
DEN
Denver
SEA
Seattle
€530 Return, found 2 days ago
€530
Return
found 2 days ago
Select JetBlue Airways flight, departing Fri, 29 May from Denver to Seattle, returning Mon, 1 Jun, priced at €530 found 2 days 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.

Icelandair
Wed, 10 Jun - Mon, 22 Jun
DUB
Dublin
SEA
Seattle
€506 Return, found 6 days ago
€506
Return
found 6 days ago
Select Icelandair flight, departing Wed, 10 Jun from Dublin to Seattle, returning Mon, 22 Jun, priced at €506 found 6 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, €186 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 €186 and €530. If you were flying one way from Phoenix (PHX), you could have gotten a great deal from just €93.
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 €186 and €530. 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.