£50 Cheap Flights to King County

View £50 flight on Thu, 28 May 2026Opens in a new window

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 £50 for one-way flights and £131 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Wed, 13 May - Sat, 16 May
LAX
Los Angeles
SEA
Seattle
£131 Return, found 2 days ago
£131
Return
found 2 days ago
Select Alaska Airlines flight, departing Wed, 13 May from Los Angeles to Seattle, returning Sat, 16 May, priced at £131 found 2 days ago
Alaska Airlines
Sat, 30 May - Tue, 2 Jun
LAX
Los Angeles
PAE
Seattle
£132 Return, found 6 days ago
£132
Return
found 6 days ago
Select Alaska Airlines flight, departing Sat, 30 May from Los Angeles to Seattle, returning Tue, 2 Jun, priced at £132 found 6 days ago
Delta
Wed, 13 May - Mon, 1 Jun
LAX
Los Angeles
SEA
Seattle
£139 Return, found 6 days ago
£139
Return
found 6 days ago
Select Delta flight, departing Wed, 13 May from Los Angeles to Seattle, returning Mon, 1 Jun, priced at £139 found 6 days ago
Alaska Airlines
Wed, 27 May - Wed, 3 Jun
SFO
San Francisco
PAE
Seattle
£161 Return, found 2 days ago
£161
Return
found 2 days ago
Select Alaska Airlines flight, departing Wed, 27 May from San Francisco to Seattle, returning Wed, 3 Jun, priced at £161 found 2 days ago
Alaska Airlines
Fri, 8 May - Sat, 9 May
PHX
Phoenix
PAE
Seattle
£168 Return, found 5 days ago
£168
Return
found 5 days ago
Select Alaska Airlines flight, departing Fri, 8 May from Phoenix to Seattle, returning Sat, 9 May, priced at £168 found 5 days ago
United
Tue, 11 Aug - Wed, 19 Aug
LAX
Los Angeles
SEA
Seattle
£182 Return, found 2 days ago
£182
Return
found 2 days ago
Select United flight, departing Tue, 11 Aug from Los Angeles to Seattle, returning Wed, 19 Aug, priced at £182 found 2 days ago
Alaska Airlines
Fri, 29 May - Wed, 3 Jun
EWR
New York
SEA
Seattle
£197 Return, found 5 days ago
£197
Return
found 5 days ago
Select Alaska Airlines flight, departing Fri, 29 May from New York to Seattle, returning Wed, 3 Jun, priced at £197 found 5 days ago
American Airlines
Tue, 19 May - Wed, 20 May
PHX
Phoenix
SEA
Seattle
£199 Return, found 4 days ago
£199
Return
found 4 days ago
Select American Airlines flight, departing Tue, 19 May from Phoenix to Seattle, returning Wed, 20 May, priced at £199 found 4 days ago
Alaska Airlines
Wed, 23 Sept - Tue, 29 Sept
EWR
New York
PAE
Seattle
£242 Return, found 6 days ago
£242
Return
found 6 days ago
Select Alaska Airlines flight, departing Wed, 23 Sept from New York to Seattle, returning Tue, 29 Sept, priced at £242 found 6 days ago
Icelandair
Sat, 29 Aug - Sun, 6 Sept
LHR
London
SEA
Seattle
£496 Return, found 15 hours ago
£496
Return
found 15 hours ago
Select Icelandair flight, departing Sat, 29 Aug from London to Seattle, returning Sun, 6 Sept, priced at £496 found 15 hours 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.

Icelandair
Thu, 18 Jun - Tue, 23 Jun
LGW
London
SEA
Seattle
£495 Return, found 1 hour ago
£495
Return
found 1 hour ago
Select Icelandair flight, departing Thu, 18 Jun from London to Seattle, returning Tue, 23 Jun, priced at £495 found 1 hour 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 £131.
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 £131 and £496. Many lucky travellers nabbed one-way tickets from Los Angeles (LAX) for only £50.
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.

When is the cheapest time to fly to King County?
If you'd prefer to spend your money experiencing King County rather than on your flight there, depart early in the week. The most cost-effective day to travel is generally Tuesday, with Monday running a close second. With many folks travelling over the weekend, Saturday often has the highest fares.
How much is a plane ticket to King County?
In the last seven days, plane fares to King County varied from £131 to £496.
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.

Travel information

King County Flights Information

Airlines serving
Delta, Alaska Airlines, United, American Airlines, JetBlue Airways, Icelandair
Roundtrip price
from £131
King County Flights Information

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