CA $570 Cheap British Airways fights from Seattle (SEA) to London (LON)

British Airways flights from Seattle to London (SEA→LON)

Prices were available within the past 7 days and start at CA $570 for one-way flights and CA $766 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Aug. 13 - Tue, Sep. 2

SEA

Seattle

LCY

London

CA $766 Roundtrip, found 2 days ago

CA $766

Roundtrip

found 2 days ago

Select British Airways flight, departing Wed, Aug. 13 from Seattle to London, returning Tue, Sep. 2, priced at CA $766 found 2 days ago

Sat, Aug. 16 - Fri, Aug. 29

SEA

Seattle

LHR

London

CA $1,188 Roundtrip, just found

CA $1,188

Roundtrip

just found

Select British Airways flight, departing Sat, Aug. 16 from Seattle to London, returning Fri, Aug. 29, priced at CA $1,188 just found

Tue, Sep. 2 - Mon, Sep. 22

SEA

Seattle

LGW

London

CA $1,274 Roundtrip, found 12 hours ago

CA $1,274

Roundtrip

found 12 hours ago

Select British Airways flight, departing Tue, Sep. 2 from Seattle to London, returning Mon, Sep. 22, priced at CA $1,274 found 12 hours ago