$419 Cheap Aer Lingus flights Seattle (SEA) to London (LON)

$419 Cheap Aer Lingus flights Seattle (SEA) to London (LON)

Prices were available within the past 7 days and start at $419 for one-way flights and $478 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Nov 19 - Wed, Nov 26

SEA

Seattle

LHR

London

$478 Roundtrip, found 5 hours ago

$478

Roundtrip

found 5 hours ago

Select Aer Lingus flight, departing Wed, Nov 19 from Seattle to London, returning Wed, Nov 26, priced at $478 found 5 hours ago

Wed, Oct 15 - Wed, Oct 29

SEA

Seattle

LHR

London

$480 Roundtrip, just found

$480

Roundtrip

just found

Select Aer Lingus flight, departing Wed, Oct 15 from Seattle to London, returning Wed, Oct 29, priced at $480 just found

Wed, Sep 10 - Wed, Sep 17

SEA

Seattle

LHR

London

$481 Roundtrip, just found

$481

Roundtrip

just found

Select Aer Lingus flight, departing Wed, Sep 10 from Seattle to London, returning Wed, Sep 17, priced at $481 just found

Sun, Feb 22 - Wed, Mar 4

SEA

Seattle

LCY

London

$866 Roundtrip, found 2 days ago

$866

Roundtrip

found 2 days ago

Select Aer Lingus flight, departing Sun, Feb 22 from Seattle to London, returning Wed, Mar 4, priced at $866 found 2 days ago