Cheap flights to King County

Popular airlines to King County

  • Alaska Airlines

    Alaska Airlines

  • Delta

    Delta

  • American Airlines

    American Airlines

  • United

    United

  • Southwest Airlines

    Southwest Airlines

  • Frontier Airlines

    Frontier Airlines

  • JetBlue Airways

    JetBlue Airways

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Popular cities in King County

FlightsFlights

Seattle

Seattle

Cheap round-trip flights to King County

Prices were available within the past 7 days and start at €68 for one-way flights and €135 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Wed, 24 Sep - Wed, 24 Sep
DEN
Denver
SEA
Seattle
€135 Return, found 4 days ago
€135
Return
found 4 days ago
Select Delta flight, departing Wed, 24 Sep from Denver to Seattle, returning Wed, 24 Sep, priced at €135 found 4 days ago
American Airlines
Wed, 19 Nov - Wed, 10 Dec
DEN
Denver
SEA
Seattle
€156 Return, found 20 hours ago
€156
Return
found 20 hours ago
Select American Airlines flight, departing Wed, 19 Nov from Denver to Seattle, returning Wed, 10 Dec, priced at €156 found 20 hours ago
United
Wed, 19 Nov - Wed, 10 Dec
DEN
Denver
SEA
Seattle
€204 Return, found 20 hours ago
€204
Return
found 20 hours ago
Select United flight, departing Wed, 19 Nov from Denver to Seattle, returning Wed, 10 Dec, priced at €204 found 20 hours ago
Icelandair
Thu, 2 Oct - Wed, 8 Oct
DUB
Dublin
SEA
Seattle
€396 Return, found 5 days ago
€396
Return
found 5 days ago
Select Icelandair flight, departing Thu, 2 Oct from Dublin to Seattle, returning Wed, 8 Oct, priced at €396 found 5 days ago
Condor
Thu, 11 Sep - Wed, 24 Sep
PRG
Prague
SEA
Seattle
€440 Return, found 5 days ago
€440
Return
found 5 days ago
Select Condor flight, departing Thu, 11 Sep from Prague to Seattle, returning Wed, 24 Sep, priced at €440 found 5 days ago
SKY express
Mon, 8 Sep - Sun, 21 Sep
ATH
Athens
SEA
Seattle
€520 Return, found 6 hours ago
€520
Return
found 6 hours ago
Select SKY express flight, departing Mon, 8 Sep from Athens to Seattle, returning Sun, 21 Sep, priced at €520 found 6 hours ago
Scandinavian Airlines
Thu, 4 Sep - Wed, 17 Sep
DUB
Dublin
SEA
Seattle
€532 Return, just found
€532
Return
just found
Select Scandinavian Airlines flight, departing Thu, 4 Sep from Dublin to Seattle, returning Wed, 17 Sep, priced at €532 just found
Lufthansa
Thu, 13 Nov - Sun, 16 Nov
DUB
Dublin
SEA
Seattle
€583 Return, found 2 hours ago
€583
Return
found 2 hours ago
Select Lufthansa flight, departing Thu, 13 Nov from Dublin to Seattle, returning Sun, 16 Nov, priced at €583 found 2 hours ago
British Airways
Fri, 5 Dec - Sun, 7 Dec
DUB
Dublin
SEA
Seattle
€584 Return, found 1 day ago
€584
Return
found 1 day ago
Select British Airways flight, departing Fri, 5 Dec from Dublin to Seattle, returning Sun, 7 Dec, priced at €584 found 1 day ago
Aer Lingus
Fri, 31 Oct - Sun, 2 Nov
DUB
Dublin
SEA
Seattle
€589 Return, found 1 hour ago
€589
Return
found 1 hour ago
Select Aer Lingus flight, departing Fri, 31 Oct from Dublin to Seattle, returning Sun, 2 Nov, priced at €589 found 1 hour ago

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.

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 €135.
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 €135 and €599. Many lucky travellers nabbed one-way tickets from Denver (DEN) for only €68.
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 €135 to €599.
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.

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.

Icelandair
Thu, 2 Oct - Wed, 8 Oct
DUB
Dublin
SEA
Seattle
€396 Return, found 5 days ago
€396
Return
found 5 days ago
Select Icelandair flight, departing Thu, 2 Oct from Dublin to Seattle, returning Wed, 8 Oct, priced at €396 found 5 days ago
*Available to Expedia members.