Cheap flights to Jefferson County

View €86 flight on Sat, 7 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

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Cheap round-trip flights to Jefferson County

Prices were available within the past 7 days and start at €86 for one-way flights and €120 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Sat, 17 Jan - Sun, 18 Jan
LAX
Los Angeles
SEA
Seattle
€120 Return, found 5 days ago
€120
Return
found 5 days ago
Select American Airlines flight, departing Sat, 17 Jan from Los Angeles to Seattle, returning Sun, 18 Jan, priced at €120 found 5 days ago
Delta
Tue, 3 Feb - Sat, 7 Feb
LAX
Los Angeles
SEA
Seattle
€135 Return, found 2 days ago
€135
Return
found 2 days ago
Select Delta flight, departing Tue, 3 Feb from Los Angeles to Seattle, returning Sat, 7 Feb, priced at €135 found 2 days ago
United
Sat, 17 Jan - Sun, 18 Jan
LAX
Los Angeles
SEA
Seattle
€180 Return, found 5 days ago
€180
Return
found 5 days ago
Select United flight, departing Sat, 17 Jan from Los Angeles to Seattle, returning Sun, 18 Jan, priced at €180 found 5 days ago
American Airlines
Tue, 3 Feb - Sat, 7 Feb
LAX
Los Angeles
PAE
Seattle
€187 Return, found 5 days ago
€187
Return
found 5 days ago
Select American Airlines flight, departing Tue, 3 Feb from Los Angeles to Seattle, returning Sat, 7 Feb, priced at €187 found 5 days ago
Scandinavian Airlines
Thu, 3 Sept - Fri, 11 Sept
DUB
Dublin
SEA
Seattle
€427 Return, found 4 days ago
€427
Return
found 4 days ago
Select Scandinavian Airlines flight, departing Thu, 3 Sept from Dublin to Seattle, returning Fri, 11 Sept, priced at €427 found 4 days ago
Icelandair
Wed, 4 Feb - Thu, 26 Feb
DUB
Dublin
SEA
Seattle
€447 Return, found 4 days ago
€447
Return
found 4 days ago
Select Icelandair flight, departing Wed, 4 Feb from Dublin to Seattle, returning Thu, 26 Feb, priced at €447 found 4 days ago
JetBlue Airways
Mon, 4 May - Mon, 11 May
DUB
Dublin
SEA
Seattle
€554 Return, found 2 days ago
€554
Return
found 2 days ago
Select JetBlue Airways flight, departing Mon, 4 May from Dublin to Seattle, returning Mon, 11 May, priced at €554 found 2 days ago
Aer Lingus
Tue, 20 Jan - Tue, 27 Jan
DUB
Dublin
SEA
Seattle
€659 Return, found 4 hours ago
€659
Return
found 4 hours ago
Select Aer Lingus flight, departing Tue, 20 Jan from Dublin to Seattle, returning Tue, 27 Jan, priced at €659 found 4 hours ago
British Airways
Mon, 16 Mar - Sun, 22 Mar
DUB
Dublin
SEA
Seattle
€659 Return, found 2 hours ago
€659
Return
found 2 hours ago
Select British Airways flight, departing Mon, 16 Mar from Dublin to Seattle, returning Sun, 22 Mar, priced at €659 found 2 hours ago
KLM
Wed, 11 Mar - Sun, 15 Mar
DUB
Dublin
SEA
Seattle
€662 Return, found 1 day ago
€662
Return
found 1 day ago
Select KLM flight, departing Wed, 11 Mar from Dublin to Seattle, returning Sun, 15 Mar, priced at €662 found 1 day 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, €120 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 €120 and €662. If you were flying one way from Los Angeles (LAX), you could have gotten a great deal from just €86.
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 €120 and €662. 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.

Scandinavian Airlines
Thu, 3 Sept - Fri, 11 Sept
DUB
Dublin
SEA
Seattle
€427 Return, found 4 days ago
€427
Return
found 4 days ago
Select Scandinavian Airlines flight, departing Thu, 3 Sept from Dublin to Seattle, returning Fri, 11 Sept, priced at €427 found 4 days ago
*Available to Expedia members.