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 $654 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Oct 7 - Tue, Oct 21

ONT

Ontario

LHR

London

$654 Roundtrip, found 1 day ago

$654

Roundtrip

found 1 day ago

Select United flight, departing Tue, Oct 7 from Ontario to London, returning Tue, Oct 21, priced at $654 found 1 day ago

Tue, Oct 7 - Tue, Oct 21

ONT

Ontario

LHR

London

$665 Roundtrip, found 1 day ago

$665

Roundtrip

found 1 day ago

Select United flight, departing Tue, Oct 7 from Ontario to London, returning Tue, Oct 21, priced at $665 found 1 day ago

Tue, Oct 7 - Tue, Oct 21

ONT

Ontario

LHR

London

$670 Roundtrip, found 1 day ago

$670

Roundtrip

found 1 day ago

Select United flight, departing Tue, Oct 7 from Ontario to London, returning Tue, Oct 21, priced at $670 found 1 day ago

Fri, Oct 10 - Sat, Oct 18

ONT

Ontario

LHR

London

$720 Roundtrip, found 1 day ago

$720

Roundtrip

found 1 day ago

Select United flight, departing Fri, Oct 10 from Ontario to London, returning Sat, Oct 18, priced at $720 found 1 day ago

Tue, Oct 7 - Tue, Oct 21

ONT

Ontario

LHR

London

$768 Roundtrip, found 1 day ago

$768

Roundtrip

found 1 day ago

Select United flight, departing Tue, Oct 7 from Ontario to London, returning Tue, Oct 21, priced at $768 found 1 day ago