Cheap United flights Ontario (ONT) to London (LHR)

Cheap United flights Ontario (ONT) to London (LHR)

Prices were available within the past 7 days and start at for one-way flights and $718 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Fri, Sep 12 - Sat, Sep 27

ONT

Ontario

LHR

London

$718 Roundtrip, found 3 days ago

$718

Roundtrip

found 3 days ago

Select United flight, departing Fri, Sep 12 from Ontario to London, returning Sat, Sep 27, priced at $718 found 3 days ago

Thu, Sep 18 - Sat, Sep 27

ONT

Ontario

LHR

London

$781 Roundtrip, found 3 days ago

$781

Roundtrip

found 3 days ago

Select United flight, departing Thu, Sep 18 from Ontario to London, returning Sat, Sep 27, priced at $781 found 3 days ago