Cheap flights to King County

Popular airlines to King County

  • Delta

    Delta

  • United

    United

  • American Airlines

    American Airlines

  • Lufthansa

    Lufthansa

  • KLM

    KLM

  • British Airways

    British Airways

  • Air Canada

    Air Canada

  • Plan, book, fly with confidence

  • trending down icon

    Be in the know

    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon

    Book smarter

    Save up to 15% on select hotels after you book a flight*
  • payments icon

    Earn twice

    Earn your airline miles on top of our rewards
    Sign in

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 €57 for one-way flights and €113 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sat, 23 Aug - Mon, 25 Aug
LAS
Las Vegas
SEA
Seattle
€113 Return, found 3 days ago
€113
Return
found 3 days ago
Select Delta flight, departing Sat, 23 Aug from Las Vegas to Seattle, returning Mon, 25 Aug, priced at €113 found 3 days ago
Delta
Tue, 9 Sep - Sat, 13 Sep
SFO
San Francisco
SEA
Seattle
€117 Return, found 5 days ago
€117
Return
found 5 days ago
Select Delta flight, departing Tue, 9 Sep from San Francisco to Seattle, returning Sat, 13 Sep, priced at €117 found 5 days ago
Delta
Thu, 21 Aug - Mon, 25 Aug
SFO
San Francisco
SEA
Seattle
€118 Return, found 8 hours ago
€118
Return
found 8 hours ago
Select Delta flight, departing Thu, 21 Aug from San Francisco to Seattle, returning Mon, 25 Aug, priced at €118 found 8 hours ago
Delta
Sat, 16 Aug - Sun, 17 Aug
BOI
Boise
SEA
Seattle
€118 Return, just found
€118
Return
just found
Select Delta flight, departing Sat, 16 Aug from Boise to Seattle, returning Sun, 17 Aug, priced at €118 just found
Delta
Sat, 23 Aug - Mon, 25 Aug
LAS
Las Vegas
SEA
Seattle
€123 Return, found 3 days ago
€123
Return
found 3 days ago
Select Delta flight, departing Sat, 23 Aug from Las Vegas to Seattle, returning Mon, 25 Aug, priced at €123 found 3 days ago
Delta
Fri, 22 Aug - Mon, 25 Aug
SFO
San Francisco
SEA
Seattle
€127 Return, found 1 day ago
€127
Return
found 1 day ago
Select Delta flight, departing Fri, 22 Aug from San Francisco to Seattle, returning Mon, 25 Aug, priced at €127 found 1 day ago
American Airlines
Tue, 9 Sep - Sat, 13 Sep
SFO
San Francisco
SEA
Seattle
€135 Return, found 5 days ago
€135
Return
found 5 days ago
Select American Airlines flight, departing Tue, 9 Sep from San Francisco to Seattle, returning Sat, 13 Sep, priced at €135 found 5 days ago
United
Tue, 9 Sep - Sat, 13 Sep
SFO
San Francisco
SEA
Seattle
€147 Return, found 5 days ago
€147
Return
found 5 days ago
Select United flight, departing Tue, 9 Sep from San Francisco to Seattle, returning Sat, 13 Sep, priced at €147 found 5 days ago
Alaska Airlines
Sat, 30 Aug - Sat, 13 Sep
SFO
San Francisco
PAE
Seattle
€220 Return, found 2 days ago
€220
Return
found 2 days ago
Select Alaska Airlines flight, departing Sat, 30 Aug from San Francisco to Seattle, returning Sat, 13 Sep, priced at €220 found 2 days ago
Hawaiian Airlines
Thu, 4 Sep - Mon, 8 Sep
LAS
Las Vegas
SEA
Seattle
€964 Return, found 14 hours ago
€964
Return
found 14 hours ago
Select Hawaiian Airlines flight, departing Thu, 4 Sep from Las Vegas to Seattle, returning Mon, 8 Sep, priced at €964 found 14 hours 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 €113.
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 €113 and €964. Many lucky travellers nabbed one-way tickets from Las Vegas (LAS) for only €57.
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 €113 to €964.
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.

Scandinavian Airlines
Thu, 4 Sep - Sun, 21 Sep
DUB
Dublin
SEA
Seattle
€397 Return, found 2 days ago
€397
Return
found 2 days ago
Select Scandinavian Airlines flight, departing Thu, 4 Sep from Dublin to Seattle, returning Sun, 21 Sep, priced at €397 found 2 days ago
*Available to Expedia members.