Flights from Chicago to London

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.

Mon, Sep 29 - Sun, Oct 5

ORD

O'Hare Intl.

LHR

Heathrow

$605 Roundtrip, found 1 day ago

$605

Roundtrip

found 1 day ago

Select Scandinavian Airlines flight, departing Mon, Sep 29 from O'Hare Intl. to Heathrow, returning Sun, Oct 5, priced at $605 found 1 day ago

Sun, Sep 14 - Wed, Sep 24

ORD

O'Hare Intl.

LHR

Heathrow

$625 Roundtrip, found 1 hour ago

$625

Roundtrip

found 1 hour ago

Select United flight, departing Sun, Sep 14 from O'Hare Intl. to Heathrow, returning Wed, Sep 24, priced at $625 found 1 hour ago

Sun, Sep 14 - Tue, Sep 23

ORD

O'Hare Intl.

LHR

Heathrow

$628 Roundtrip, found 1 hour ago

$628

Roundtrip

found 1 hour ago

Select United flight, departing Sun, Sep 14 from O'Hare Intl. to Heathrow, returning Tue, Sep 23, priced at $628 found 1 hour ago

Sun, Sep 14 - Fri, Sep 26

ORD

O'Hare Intl.

LHR

Heathrow

$633 Roundtrip, found 1 hour ago

$633

Roundtrip

found 1 hour ago

Select United flight, departing Sun, Sep 14 from O'Hare Intl. to Heathrow, returning Fri, Sep 26, priced at $633 found 1 hour ago

Wed, Apr 15 - Tue, Apr 28

ORD

O'Hare Intl.

LHR

Heathrow

$642 Roundtrip, found 3 days ago

$642

Roundtrip

found 3 days ago

Select Icelandair flight, departing Wed, Apr 15 from O'Hare Intl. to Heathrow, returning Tue, Apr 28, priced at $642 found 3 days ago

Mon, Dec 29 - Tue, Jan 6

ORD

O'Hare Intl.

LHR

Heathrow

$652 Roundtrip, found 1 day ago

$652

Roundtrip

found 1 day ago

Select Lufthansa flight, departing Mon, Dec 29 from O'Hare Intl. to Heathrow, returning Tue, Jan 6, priced at $652 found 1 day ago

Wed, Apr 15 - Tue, Apr 28

ORD

O'Hare Intl.

LHR

Heathrow

$661 Roundtrip, found 3 days ago

$661

Roundtrip

found 3 days ago

Select American Airlines flight, departing Wed, Apr 15 from O'Hare Intl. to Heathrow, returning Tue, Apr 28, priced at $661 found 3 days ago

Wed, Apr 15 - Tue, Apr 28

ORD

O'Hare Intl.

LHR

Heathrow

$661 Roundtrip, found 3 days ago

$661

Roundtrip

found 3 days ago

Select Swiss International Air Lines flight, departing Wed, Apr 15 from O'Hare Intl. to Heathrow, returning Tue, Apr 28, priced at $661 found 3 days ago

Mon, Sep 15 - Tue, Sep 23

ORD

O'Hare Intl.

LHR

Heathrow

$670 Roundtrip, found 1 hour ago

$670

Roundtrip

found 1 hour ago

Select Virgin Atlantic flight, departing Mon, Sep 15 from O'Hare Intl. to Heathrow, returning Tue, Sep 23, priced at $670 found 1 hour ago

Wed, Apr 15 - Tue, Apr 28

ORD

O'Hare Intl.

LHR

Heathrow

$676 Roundtrip, found 3 days ago

$676

Roundtrip

found 3 days ago

Select Delta flight, departing Wed, Apr 15 from O'Hare Intl. to Heathrow, returning Tue, Apr 28, priced at $676 found 3 days ago

Wed, Apr 15 - Tue, Apr 28

ORD

O'Hare Intl.

LHR

Heathrow

$698 Roundtrip, found 3 days ago

$698

Roundtrip

found 3 days ago

Select JetBlue Airways flight, departing Wed, Apr 15 from O'Hare Intl. to Heathrow, returning Tue, Apr 28, priced at $698 found 3 days ago

Wed, Apr 15 - Tue, Apr 28

ORD

O'Hare Intl.

LHR

Heathrow

$714 Roundtrip, found 3 days ago

$714

Roundtrip

found 3 days ago

Select Air Canada flight, departing Wed, Apr 15 from O'Hare Intl. to Heathrow, returning Tue, Apr 28, priced at $714 found 3 days ago

Wed, Apr 15 - Tue, Apr 28

ORD

O'Hare Intl.

LHR

Heathrow

$763 Roundtrip, found 3 days ago

$763

Roundtrip

found 3 days ago

Select KLM flight, departing Wed, Apr 15 from O'Hare Intl. to Heathrow, returning Tue, Apr 28, priced at $763 found 3 days ago

Wed, Apr 15 - Tue, Apr 28

ORD

O'Hare Intl.

LHR

Heathrow

$840 Roundtrip, found 3 days ago

$840

Roundtrip

found 3 days ago

Select Aer Lingus flight, departing Wed, Apr 15 from O'Hare Intl. to Heathrow, returning Tue, Apr 28, priced at $840 found 3 days ago

Wed, Apr 15 - Tue, Apr 28

ORD

O'Hare Intl.

LHR

Heathrow

$861 Roundtrip, found 3 days ago

$861

Roundtrip

found 3 days ago

Select Brussels Airlines flight, departing Wed, Apr 15 from O'Hare Intl. to Heathrow, returning Tue, Apr 28, priced at $861 found 3 days ago

Wed, Apr 15 - Tue, Apr 28

ORD

O'Hare Intl.

LHR

Heathrow

$865 Roundtrip, found 3 days ago

$865

Roundtrip

found 3 days ago

Select Finnair flight, departing Wed, Apr 15 from O'Hare Intl. to Heathrow, returning Tue, Apr 28, priced at $865 found 3 days ago

Wed, Apr 15 - Tue, Apr 28

ORD

O'Hare Intl.

LHR

Heathrow

$889 Roundtrip, found 3 days ago

$889

Roundtrip

found 3 days ago

Select Iberia flight, departing Wed, Apr 15 from O'Hare Intl. to Heathrow, returning Tue, Apr 28, priced at $889 found 3 days ago

Wed, Apr 15 - Tue, Apr 28

ORD

O'Hare Intl.

LHR

Heathrow

$916 Roundtrip, found 3 days ago

$916

Roundtrip

found 3 days ago

Select Air France flight, departing Wed, Apr 15 from O'Hare Intl. to Heathrow, returning Tue, Apr 28, priced at $916 found 3 days ago

Fri, Sep 19 - Sat, Sep 20

ORD

O'Hare Intl.

LHR

Heathrow

$964 Roundtrip, found 1 hour ago

$964

Roundtrip

found 1 hour ago

Select British Airways flight, departing Fri, Sep 19 from O'Hare Intl. to Heathrow, returning Sat, Sep 20, priced at $964 found 1 hour ago

Wed, Apr 15 - Sat, Apr 25

ORD

O'Hare Intl.

LHR

Heathrow

$1,016 Roundtrip, found 1 day ago

$1,016

Roundtrip

found 1 day ago

Select Turkish Airlines flight, departing Wed, Apr 15 from O'Hare Intl. to Heathrow, returning Sat, Apr 25, priced at $1,016 found 1 day ago