Flights from Seattle to Horsham

Cheapest flights from Seattle

These prices were available within the past 7 days. Prices quoted are per person, round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Sep 2 - Tue, Sep 16

SEA

Seattle - Tacoma Intl.

LHR

Heathrow

$545 Roundtrip, found 7 hours ago

$545

Roundtrip

found 7 hours ago

Select Icelandair flight, departing Tue, Sep 2 from Seattle - Tacoma Intl. to Heathrow, returning Tue, Sep 16, priced at $545 found 7 hours ago

Tue, Sep 2 - Tue, Sep 16

SEA

Seattle - Tacoma Intl.

LHR

Heathrow

$547 Roundtrip, found 7 hours ago

$547

Roundtrip

found 7 hours ago

Select American Airlines flight, departing Tue, Sep 2 from Seattle - Tacoma Intl. to Heathrow, returning Tue, Sep 16, priced at $547 found 7 hours ago

Tue, Sep 2 - Tue, Sep 16

SEA

Seattle - Tacoma Intl.

LHR

Heathrow

$547 Roundtrip, found 7 hours ago

$547

Roundtrip

found 7 hours ago

Select British Airways flight, departing Tue, Sep 2 from Seattle - Tacoma Intl. to Heathrow, returning Tue, Sep 16, priced at $547 found 7 hours ago

Tue, Sep 2 - Tue, Sep 16

SEA

Seattle - Tacoma Intl.

LHR

Heathrow

$547 Roundtrip, found 7 hours ago

$547

Roundtrip

found 7 hours ago

Select Air Canada flight, departing Tue, Sep 2 from Seattle - Tacoma Intl. to Heathrow, returning Tue, Sep 16, priced at $547 found 7 hours ago

Tue, Sep 2 - Tue, Sep 16

SEA

Seattle - Tacoma Intl.

LHR

Heathrow

$557 Roundtrip, found 7 hours ago

$557

Roundtrip

found 7 hours ago

Select United flight, departing Tue, Sep 2 from Seattle - Tacoma Intl. to Heathrow, returning Tue, Sep 16, priced at $557 found 7 hours ago

Tue, Sep 2 - Tue, Sep 16

SEA

Seattle - Tacoma Intl.

LCY

London City

$620 Roundtrip, found 1 day ago

$620

Roundtrip

found 1 day ago

Select British Airways flight, departing Tue, Sep 2 from Seattle - Tacoma Intl. to London City, returning Tue, Sep 16, priced at $620 found 1 day ago

Mon, Sep 22 - Wed, Oct 8

SEA

Seattle - Tacoma Intl.

LGW

Gatwick

$653 Roundtrip, found 4 days ago

$653

Roundtrip

found 4 days ago

Select Icelandair flight, departing Mon, Sep 22 from Seattle - Tacoma Intl. to Gatwick, returning Wed, Oct 8, priced at $653 found 4 days ago

Tue, Sep 2 - Tue, Sep 16

SEA

Seattle - Tacoma Intl.

LHR

Heathrow

$662 Roundtrip, found 7 hours ago

$662

Roundtrip

found 7 hours ago

Select Virgin Atlantic flight, departing Tue, Sep 2 from Seattle - Tacoma Intl. to Heathrow, returning Tue, Sep 16, priced at $662 found 7 hours ago

Tue, Sep 2 - Tue, Sep 16

SEA

Seattle - Tacoma Intl.

LHR

Heathrow

$662 Roundtrip, found 7 hours ago

$662

Roundtrip

found 7 hours ago

Select Delta flight, departing Tue, Sep 2 from Seattle - Tacoma Intl. to Heathrow, returning Tue, Sep 16, priced at $662 found 7 hours ago

Thu, Sep 25 - Wed, Oct 8

SEA

Seattle - Tacoma Intl.

LGW

Gatwick

$696 Roundtrip, found 4 days ago

$696

Roundtrip

found 4 days ago

Select JetBlue Airways flight, departing Thu, Sep 25 from Seattle - Tacoma Intl. to Gatwick, returning Wed, Oct 8, priced at $696 found 4 days ago

Tue, Sep 2 - Tue, Sep 16

SEA

Seattle - Tacoma Intl.

LHR

Heathrow

$714 Roundtrip, found 7 hours ago

$714

Roundtrip

found 7 hours ago

Select KLM flight, departing Tue, Sep 2 from Seattle - Tacoma Intl. to Heathrow, returning Tue, Sep 16, priced at $714 found 7 hours ago

Tue, Sep 2 - Tue, Sep 16

SEA

Seattle - Tacoma Intl.

LHR

Heathrow

$714 Roundtrip, found 7 hours ago

$714

Roundtrip

found 7 hours ago

Select Air France flight, departing Tue, Sep 2 from Seattle - Tacoma Intl. to Heathrow, returning Tue, Sep 16, priced at $714 found 7 hours ago

Tue, Sep 2 - Tue, Sep 16

SEA

Seattle - Tacoma Intl.

LHR

Heathrow

$819 Roundtrip, found 7 hours ago

$819

Roundtrip

found 7 hours ago

Select Austrian Airlines flight, departing Tue, Sep 2 from Seattle - Tacoma Intl. to Heathrow, returning Tue, Sep 16, priced at $819 found 7 hours ago

Tue, Sep 2 - Tue, Sep 16

SEA

Seattle - Tacoma Intl.

LCY

London City

$828 Roundtrip, found 1 day ago

$828

Roundtrip

found 1 day ago

Select Lufthansa flight, departing Tue, Sep 2 from Seattle - Tacoma Intl. to London City, returning Tue, Sep 16, priced at $828 found 1 day ago

Tue, Sep 2 - Tue, Sep 16

SEA

Seattle - Tacoma Intl.

LCY

London City

$857 Roundtrip, found 1 day ago

$857

Roundtrip

found 1 day ago

Select Swiss International Air Lines flight, departing Tue, Sep 2 from Seattle - Tacoma Intl. to London City, returning Tue, Sep 16, priced at $857 found 1 day ago

Tue, Sep 2 - Tue, Sep 16

SEA

Seattle - Tacoma Intl.

LHR

Heathrow

$883 Roundtrip, found 7 hours ago

$883

Roundtrip

found 7 hours ago

Select Alaska Airlines flight, departing Tue, Sep 2 from Seattle - Tacoma Intl. to Heathrow, returning Tue, Sep 16, priced at $883 found 7 hours ago

Fri, Apr 24 - Thu, May 7

SEA

Seattle - Tacoma Intl.

LHR

Heathrow

$902 Roundtrip, found 6 days ago

$902

Roundtrip

found 6 days ago

Select Turkish Airlines flight, departing Fri, Apr 24 from Seattle - Tacoma Intl. to Heathrow, returning Thu, May 7, priced at $902 found 6 days ago

Tue, Sep 2 - Tue, Sep 16

SEA

Seattle - Tacoma Intl.

LHR

Heathrow

$913 Roundtrip, found 7 hours ago

$913

Roundtrip

found 7 hours ago

Select Iberia flight, departing Tue, Sep 2 from Seattle - Tacoma Intl. to Heathrow, returning Tue, Sep 16, priced at $913 found 7 hours ago

Tue, Sep 2 - Tue, Sep 16

SEA

Seattle - Tacoma Intl.

LHR

Heathrow

$915 Roundtrip, found 7 hours ago

$915

Roundtrip

found 7 hours ago

Select Finnair flight, departing Tue, Sep 2 from Seattle - Tacoma Intl. to Heathrow, returning Tue, Sep 16, priced at $915 found 7 hours ago

Tue, Sep 2 - Tue, Sep 16

SEA

Seattle - Tacoma Intl.

LCY

London City

$923 Roundtrip, found 1 day ago

$923

Roundtrip

found 1 day ago

Select Aer Lingus flight, departing Tue, Sep 2 from Seattle - Tacoma Intl. to London City, returning Tue, Sep 16, priced at $923 found 1 day ago