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Flights from Chicago to London

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Cheapest flights from Chicago

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.

Thu, May 13 - Sun, May 23
ORD
O'Hare Intl.
to
LHR
Heathrow
$638

Roundtrip

found 9 hours ago

Open ORD to LHR flights search result page
Thu, May 13 - Sun, May 23
ORD
O'Hare Intl.
to
LHR
Heathrow
$722

Roundtrip

found 9 hours ago

Open ORD to LHR flights search result page
Thu, May 13 - Sun, May 23
ORD
O'Hare Intl.
to
LHR
Heathrow
$759

Roundtrip

found 9 hours ago

Open ORD to LHR flights search result page
Thu, May 13 - Sun, May 23
ORD
O'Hare Intl.
to
LHR
Heathrow
$768

Roundtrip

found 9 hours ago

Open ORD to LHR flights search result page
Thu, May 13 - Sun, May 23
ORD
O'Hare Intl.
to
LHR
Heathrow
$829

Roundtrip

found 9 hours ago

Open ORD to LHR flights search result page
Thu, May 13 - Sun, May 23
ORD
O'Hare Intl.
to
LHR
Heathrow
$842

Roundtrip

found 9 hours ago

Open ORD to LHR flights search result page
Thu, May 13 - Sun, May 23
ORD
O'Hare Intl.
to
LHR
Heathrow
$842

Roundtrip

found 9 hours ago

Open ORD to LHR flights search result page
Thu, May 13 - Sun, May 23
ORD
O'Hare Intl.
to
LHR
Heathrow
$842

Roundtrip

found 9 hours ago

Open ORD to LHR flights search result page
Thu, May 13 - Sun, May 23
ORD
O'Hare Intl.
to
LHR
Heathrow
$856

Roundtrip

found 9 hours ago

Open ORD to LHR flights search result page
Thu, May 13 - Sun, May 23
ORD
O'Hare Intl.
to
LHR
Heathrow
$858

Roundtrip

found 9 hours ago

Open ORD to LHR flights search result page
Thu, May 13 - Sun, May 23
ORD
O'Hare Intl.
to
LHR
Heathrow
$863

Roundtrip

found 9 hours ago

Open ORD to LHR flights search result page
Thu, May 13 - Sun, May 23
ORD
O'Hare Intl.
to
LHR
Heathrow
$870

Roundtrip

found 9 hours ago

Open ORD to LHR flights search result page
Thu, May 13 - Sun, May 23
ORD
O'Hare Intl.
to
LHR
Heathrow
$873

Roundtrip

found 9 hours ago

Open ORD to LHR flights search result page
Thu, May 13 - Sun, May 23
ORD
O'Hare Intl.
to
LHR
Heathrow
$889

Roundtrip

found 9 hours ago

Open ORD to LHR flights search result page
Thu, May 13 - Sun, May 23
ORD
O'Hare Intl.
to
LHR
Heathrow
$890

Roundtrip

found 9 hours ago

Open ORD to LHR flights search result page
Thu, May 13 - Sun, May 23
ORD
O'Hare Intl.
to
LHR
Heathrow
$898

Roundtrip

found 9 hours ago

Open ORD to LHR flights search result page
Thu, May 13 - Sun, May 23
ORD
O'Hare Intl.
to
LHR
Heathrow
$901

Roundtrip

found 9 hours ago

Open ORD to LHR flights search result page
Thu, May 13 - Sun, May 23
ORD
O'Hare Intl.
to
LHR
Heathrow
$953

Roundtrip

found 9 hours ago

Open ORD to LHR flights search result page
Thu, May 13 - Sun, May 23
ORD
O'Hare Intl.
to
LHR
Heathrow
$981

Roundtrip

found 9 hours ago

Open ORD to LHR flights search result page
Thu, May 13 - Sun, May 23
ORD
O'Hare Intl.
to
LHR
Heathrow
$1,497

Roundtrip

found 9 hours ago

Open ORD to LHR flights search result page
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