How much is the cheapest flight to King County?

Prices were available within the past 7 days and start at $29 for one-way flights and $58 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Fri, Jan 16 - Sat, Jan 17

PHX

Phoenix

SEA

Seattle

$58 Roundtrip, just found

$58

Roundtrip

just found

Select Frontier Airlines flight, departing Fri, Jan 16 from Phoenix to Seattle, returning Sat, Jan 17, priced at $58 just found

Thu, Jan 22 - Sun, Jan 25

LAX

Los Angeles

SEA

Seattle

$58 Roundtrip, just found

$58

Roundtrip

just found

Select Frontier Airlines flight, departing Thu, Jan 22 from Los Angeles to Seattle, returning Sun, Jan 25, priced at $58 just found

Sat, Feb 28 - Sun, Mar 8

PHX

Phoenix

SEA

Seattle

$59 Roundtrip, found 9 hours ago

$59

Roundtrip

found 9 hours ago

Select Frontier Airlines flight, departing Sat, Feb 28 from Phoenix to Seattle, returning Sun, Mar 8, priced at $59 found 9 hours ago

Tue, Mar 17 - Thu, Mar 19

PHX

Phoenix

SEA

Seattle

$62 Roundtrip, found 23 hours ago

$62

Roundtrip

found 23 hours ago

Select Frontier Airlines flight, departing Tue, Mar 17 from Phoenix to Seattle, returning Thu, Mar 19, priced at $62 found 23 hours ago

Wed, Mar 25 - Mon, Mar 30

PHX

Phoenix

SEA

Seattle

$63 Roundtrip, found 5 hours ago

$63

Roundtrip

found 5 hours ago

Select Frontier Airlines flight, departing Wed, Mar 25 from Phoenix to Seattle, returning Mon, Mar 30, priced at $63 found 5 hours ago

Sat, Mar 21 - Thu, Mar 26

PHX

Phoenix

SEA

Seattle

$67 Roundtrip, just found

$67

Roundtrip

just found

Select Frontier Airlines flight, departing Sat, Mar 21 from Phoenix to Seattle, returning Thu, Mar 26, priced at $67 just found

Tue, Jan 27 - Sat, Feb 28

PHX

Phoenix

SEA

Seattle

$69 Roundtrip, found 4 hours ago

$69

Roundtrip

found 4 hours ago

Select American Airlines flight, departing Tue, Jan 27 from Phoenix to Seattle, returning Sat, Feb 28, priced at $69 found 4 hours ago

Fri, Jan 23 - Sun, Jan 25

PHX

Phoenix

PAE

Seattle

$97 Roundtrip, found 2 hours ago

$97

Roundtrip

found 2 hours ago

Select Alaska Airlines flight, departing Fri, Jan 23 from Phoenix to Seattle, returning Sun, Jan 25, priced at $97 found 2 hours ago

Wed, Feb 11 - Sun, Feb 15

SFO

San Francisco

SEA

Seattle

$97 Roundtrip, found 2 hours ago

$97

Roundtrip

found 2 hours ago

Select United flight, departing Wed, Feb 11 from San Francisco to Seattle, returning Sun, Feb 15, priced at $97 found 2 hours ago

Fri, Jan 16 - Mon, Jan 19

PHX

Phoenix

SEA

Seattle

$117 Roundtrip, just found

$117

Roundtrip

just found

Select Southwest Airlines flight, departing Fri, Jan 16 from Phoenix to Seattle, returning Mon, Jan 19, priced at $117 just found