Popular airlines to King County

  • Alaska Airlines

  • Delta

  • American Airlines

  • United

  • Southwest Airlines

  • Frontier Airlines

  • JetBlue Airways

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Cheap round-trip flights to King County

Prices were available within the past 7 days and start at €140 for one-way flights and €285 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Tue, 1 Sept - Tue, 15 Sept
JFK
New York
SEA
Seattle
€285 Return, found 5 days ago
€285
Return
found 5 days ago
Select American Airlines flight, departing Tue, 1 Sept from New York to Seattle, returning Tue, 15 Sept, priced at €285 found 5 days ago
Delta
Wed, 23 Sept - Wed, 23 Sept
JFK
New York
SEA
Seattle
€291 Return, found 1 day ago
€291
Return
found 1 day ago
Select Delta flight, departing Wed, 23 Sept from New York to Seattle, returning Wed, 23 Sept, priced at €291 found 1 day ago
American Airlines
Tue, 1 Sept - Tue, 15 Sept
JFK
New York
SEA
Seattle
€294 Return, found 5 days ago
€294
Return
found 5 days ago
Select American Airlines flight, departing Tue, 1 Sept from New York to Seattle, returning Tue, 15 Sept, priced at €294 found 5 days ago
JetBlue Airways
Thu, 8 Oct - Wed, 14 Oct
JFK
New York
SEA
Seattle
€294 Return, found 2 days ago
€294
Return
found 2 days ago
Select JetBlue Airways flight, departing Thu, 8 Oct from New York to Seattle, returning Wed, 14 Oct, priced at €294 found 2 days ago
Icelandair
Fri, 2 Oct - Thu, 15 Oct
LGW
London
SEA
Seattle
€467 Return, found 3 days ago
€467
Return
found 3 days ago
Select Icelandair flight, departing Fri, 2 Oct from London to Seattle, returning Thu, 15 Oct, priced at €467 found 3 days ago
Icelandair
Mon, 25 Jan - Sun, 31 Jan
LHR
London
SEA
Seattle
€467 Return, found 4 days ago
€467
Return
found 4 days ago
Select Icelandair flight, departing Mon, 25 Jan from London to Seattle, returning Sun, 31 Jan, priced at €467 found 4 days ago
Aer Lingus
Sun, 15 Nov - Sun, 29 Nov
LHR
London
SEA
Seattle
€476 Return, found 5 days ago
€476
Return
found 5 days ago
Select Aer Lingus flight, departing Sun, 15 Nov from London to Seattle, returning Sun, 29 Nov, priced at €476 found 5 days ago
JetBlue Airways
Wed, 26 Aug - Sun, 30 Aug
DUB
Dublin
SEA
Seattle
€492 Return, found 4 days ago
€492
Return
found 4 days ago
Select JetBlue Airways flight, departing Wed, 26 Aug from Dublin to Seattle, returning Sun, 30 Aug, priced at €492 found 4 days ago
British Airways
Sun, 15 Nov - Sun, 29 Nov
LHR
London
SEA
Seattle
€531 Return, found 5 days ago
€531
Return
found 5 days ago
Select British Airways flight, departing Sun, 15 Nov from London to Seattle, returning Sun, 29 Nov, priced at €531 found 5 days ago
Scandinavian Airlines
Fri, 2 Oct - Fri, 9 Oct
DUB
Dublin
SEA
Seattle
€535 Return, found 2 days ago
€535
Return
found 2 days ago
Select Scandinavian Airlines flight, departing Fri, 2 Oct from Dublin to Seattle, returning Fri, 9 Oct, priced at €535 found 2 days ago

Trending flights to King 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.

JetBlue Airways
Wed, 26 Aug - Sun, 30 Aug
DUB
Dublin
SEA
Seattle
€492 Return, found 4 days ago
€492
Return
found 4 days ago
Select JetBlue Airways flight, departing Wed, 26 Aug from Dublin to Seattle, returning Sun, 30 Aug, priced at €492 found 4 days ago

Frequently asked questions

How do I find cheap flights to King County that have flexible change policies?
We know that things can change in the blink of an eye, so locking in a flexible ticket with Expedia is always a clever idea. Tick the "No change fee" box underneath the "Flexible change policies" filter. Your low-cost, flexible flight to King County is only a few clicks away.
Which airlines fly to King County?
When you're ready to book your ticket to or near King County, these carriers look forward to welcoming you on board:

  • Alaska Airlines - 8,781 flights to or near King County each month, including 8,781 flights to Seattle - Tacoma Intl. Airport (SEA) per month.
  • Delta Air Lines - 4,186 flights to or near King County each month, including 4,186 flights to Seattle - Tacoma Intl. Airport (SEA) per month.
  • United Airlines - 828 flights to or near King County each month, including 828 flights to Seattle - Tacoma Intl. Airport (SEA) per month.

How can I find cheap tickets to King County?
Book in advance, fly in or out of nearby airports, avoid peak travel periods — there are plenty of ways! One more is to take advantage of Expedia's "flexible dates" feature. Search for your King County flight, then compare the prices for nearby dates. In the last seven days, the best price for a flight to King County was €285.
How much is a flight to King County?
There were plenty of affordable fares for the taking in the last seven days, with the price of a return flight to King County ranging between €285 and €535. Many lucky travellers nabbed one-way tickets from New York (JFK) for only €140.
What are the most popular airports to fly into in King County?
Depending on which carrier you travel with and departure city, one of these leading airports will be your entry point to King County:

  • Seattle - Tacoma Intl. Airport (SEA) - 15,456 flights per month.
  • Boeing Field Airport (BFI) - 247 flights per month.

How much is a plane ticket to King County?
In the last seven days, plane fares to King County varied from €285 to €535.
What is the best time to go to King County?
A terrific time to check out Seattle is after June 20 when summer starts. In King County's most populated city, temperatures range from 13ºC to 24ºC during this time — glorious weather for touring around! March, April and May are the most popular months for tourists.
What months are the cheapest to book a flight to King County?
February is the cheapest month to reserve a seat for your King County adventure. Airfares cost the most over the festive month of December, so steer clear of this time if possible.

Book with confidence

About King County

Expedia offers flights to King County to meet every traveller's needs. Whatever your flight need - Expedia has the flight for you. So choose from flights to King County or destinations around the world and discover how easy it is to make your flight reservations on Expedia.
About King County
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