Cheap flights to Jefferson County

View €121 flight on Fri, 15 May 2026Opens in a new window

Popular airlines to Jefferson County

  • Alaska Airlines

  • Delta

  • American Airlines

  • United

  • Southwest Airlines

  • Frontier Airlines

  • Sun Country Airlines

  • 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 €121 for one-way flights and €240 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Wed, 6 May - Tue, 12 May
JFK
New York
SEA
Seattle
€240 Return, found 4 days ago
€240
Return
found 4 days ago
Select Delta flight, departing Wed, 6 May from New York to Seattle, returning Tue, 12 May, priced at €240 found 4 days ago
Delta
Mon, 6 Apr - Wed, 15 Apr
JFK
New York
SEA
Seattle
€256 Return, found 5 days ago
€256
Return
found 5 days ago
Select Delta flight, departing Mon, 6 Apr from New York to Seattle, returning Wed, 15 Apr, priced at €256 found 5 days ago
American Airlines
Wed, 6 May - Tue, 12 May
JFK
New York
SEA
Seattle
€257 Return, found 4 days ago
€257
Return
found 4 days ago
Select American Airlines flight, departing Wed, 6 May from New York to Seattle, returning Tue, 12 May, priced at €257 found 4 days ago
Delta
Sat, 25 Apr - Sat, 2 May
JFK
New York
SEA
Seattle
€258 Return, just found
€258
Return
just found
Select Delta flight, departing Sat, 25 Apr from New York to Seattle, returning Sat, 2 May, priced at €258 just found
JetBlue Airways
Thu, 3 Sept - Sat, 5 Sept
JFK
New York
SEA
Seattle
€360 Return, found 2 days ago
€360
Return
found 2 days ago
Select JetBlue Airways flight, departing Thu, 3 Sept from New York to Seattle, returning Sat, 5 Sept, priced at €360 found 2 days ago
Icelandair
Wed, 4 Nov - Fri, 20 Nov
DUB
Dublin
SEA
Seattle
€422 Return, found 2 days ago
€422
Return
found 2 days ago
Select Icelandair flight, departing Wed, 4 Nov from Dublin to Seattle, returning Fri, 20 Nov, priced at €422 found 2 days ago
Scandinavian Airlines
Thu, 21 May - Fri, 29 May
DUB
Dublin
SEA
Seattle
€453 Return, found 4 days ago
€453
Return
found 4 days ago
Select Scandinavian Airlines flight, departing Thu, 21 May from Dublin to Seattle, returning Fri, 29 May, priced at €453 found 4 days ago
Iberia
Mon, 4 May - Sun, 17 May
DUB
Dublin
SEA
Seattle
€470 Return, found 6 days ago
€470
Return
found 6 days ago
Select Iberia flight, departing Mon, 4 May from Dublin to Seattle, returning Sun, 17 May, priced at €470 found 6 days ago
British Airways
Thu, 9 Apr - Mon, 13 Apr
DUB
Dublin
SEA
Seattle
€494 Return, found 5 days ago
€494
Return
found 5 days ago
Select British Airways flight, departing Thu, 9 Apr from Dublin to Seattle, returning Mon, 13 Apr, priced at €494 found 5 days ago
Aer Lingus
Tue, 5 May - Sat, 30 May
DUB
Dublin
SEA
Seattle
€526 Return, found 1 hour ago
€526
Return
found 1 hour ago
Select Aer Lingus flight, departing Tue, 5 May from Dublin to Seattle, returning Sat, 30 May, priced at €526 found 1 hour 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, 4 Nov - Fri, 20 Nov
DUB
Dublin
SEA
Seattle
€422 Return, found 2 days ago
€422
Return
found 2 days ago
Select Icelandair flight, departing Wed, 4 Nov from Dublin to Seattle, returning Fri, 20 Nov, priced at €422 found 2 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, €240 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 €240 and €649. If you were flying one way from New York (JFK), you could have gotten a great deal from just €121.
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 €240 and €649. 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.