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 8 - Wed, Sep 24

ORD

O'Hare Intl.

LHR

Heathrow

$507 Roundtrip, found 3 days ago

$507

Roundtrip

found 3 days ago

Select Air Canada flight, departing Mon, Sep 8 from O'Hare Intl. to Heathrow, returning Wed, Sep 24, priced at $507 found 3 days ago

Wed, Nov 19 - Wed, Nov 26

ORD

O'Hare Intl.

LGW

Gatwick

$520 Roundtrip, found 1 day ago

$520

Roundtrip

found 1 day ago

Select Icelandair flight, departing Wed, Nov 19 from O'Hare Intl. to Gatwick, returning Wed, Nov 26, priced at $520 found 1 day ago

Sun, Sep 7 - Tue, Sep 16

ORD

O'Hare Intl.

LHR

Heathrow

$526 Roundtrip, found 3 days ago

$526

Roundtrip

found 3 days ago

Select United flight, departing Sun, Sep 7 from O'Hare Intl. to Heathrow, returning Tue, Sep 16, priced at $526 found 3 days ago

Tue, Dec 2 - Wed, Dec 17

ORD

O'Hare Intl.

LCY

London City

$553 Roundtrip, found 4 days ago

$553

Roundtrip

found 4 days ago

Select Swiss International Air Lines flight, departing Tue, Dec 2 from O'Hare Intl. to London City, returning Wed, Dec 17, priced at $553 found 4 days ago

Tue, Dec 2 - Wed, Dec 17

ORD

O'Hare Intl.

LHR

Heathrow

$579 Roundtrip, found 4 days ago

$579

Roundtrip

found 4 days ago

Select Lufthansa flight, departing Tue, Dec 2 from O'Hare Intl. to Heathrow, returning Wed, Dec 17, priced at $579 found 4 days ago

Fri, Sep 5 - Fri, Sep 12

ORD

O'Hare Intl.

LHR

Heathrow

$582 Roundtrip, found 3 days ago

$582

Roundtrip

found 3 days ago

Select Air Canada flight, departing Fri, Sep 5 from O'Hare Intl. to Heathrow, returning Fri, Sep 12, priced at $582 found 3 days ago

Tue, Nov 25 - Thu, Nov 27

ORD

O'Hare Intl.

LHR

Heathrow

$583 Roundtrip, found 1 day ago

$583

Roundtrip

found 1 day ago

Select Virgin Atlantic flight, departing Tue, Nov 25 from O'Hare Intl. to Heathrow, returning Thu, Nov 27, priced at $583 found 1 day ago

Mon, Jul 28 - Tue, Sep 9

ORD

O'Hare Intl.

LHR

Heathrow

$585 Roundtrip, found 1 day ago

$585

Roundtrip

found 1 day ago

Select British Airways flight, departing Mon, Jul 28 from O'Hare Intl. to Heathrow, returning Tue, Sep 9, priced at $585 found 1 day ago

Mon, Jul 28 - Tue, Sep 9

ORD

O'Hare Intl.

LHR

Heathrow

$585 Roundtrip, found 1 day ago

$585

Roundtrip

found 1 day ago

Select American Airlines flight, departing Mon, Jul 28 from O'Hare Intl. to Heathrow, returning Tue, Sep 9, priced at $585 found 1 day ago

Wed, Nov 19 - Fri, Nov 28

ORD

O'Hare Intl.

LHR

Heathrow

$592 Roundtrip, found 1 day ago

$592

Roundtrip

found 1 day ago

Select KLM flight, departing Wed, Nov 19 from O'Hare Intl. to Heathrow, returning Fri, Nov 28, priced at $592 found 1 day ago

Sat, Mar 14 - Sun, Mar 22

ORD

O'Hare Intl.

LHR

Heathrow

$606 Roundtrip, found 12 hours ago

$606

Roundtrip

found 12 hours ago

Select Scandinavian Airlines flight, departing Sat, Mar 14 from O'Hare Intl. to Heathrow, returning Sun, Mar 22, priced at $606 found 12 hours ago

Mon, Nov 24 - Wed, Nov 26

ORD

O'Hare Intl.

LHR

Heathrow

$635 Roundtrip, found 1 day ago

$635

Roundtrip

found 1 day ago

Select Air France flight, departing Mon, Nov 24 from O'Hare Intl. to Heathrow, returning Wed, Nov 26, priced at $635 found 1 day ago

Tue, Dec 2 - Wed, Dec 17

MDW

Midway Intl.

LHR

Heathrow

$660 Roundtrip, found 4 days ago

$660

Roundtrip

found 4 days ago

Select Virgin Atlantic flight, departing Tue, Dec 2 from Midway Intl. to Heathrow, returning Wed, Dec 17, priced at $660 found 4 days ago

Tue, Dec 2 - Wed, Dec 17

MDW

Midway Intl.

LHR

Heathrow

$660 Roundtrip, found 4 days ago

$660

Roundtrip

found 4 days ago

Select Delta flight, departing Tue, Dec 2 from Midway Intl. to Heathrow, returning Wed, Dec 17, priced at $660 found 4 days ago

Fri, Sep 5 - Fri, Sep 12

ORD

O'Hare Intl.

LHR

Heathrow

$677 Roundtrip, found 3 days ago

$677

Roundtrip

found 3 days ago

Select TAP Portugal flight, departing Fri, Sep 5 from O'Hare Intl. to Heathrow, returning Fri, Sep 12, priced at $677 found 3 days ago

Tue, Dec 2 - Wed, Dec 17

ORD

O'Hare Intl.

LHR

Heathrow

$726 Roundtrip, found 4 days ago

$726

Roundtrip

found 4 days ago

Select Brussels Airlines flight, departing Tue, Dec 2 from O'Hare Intl. to Heathrow, returning Wed, Dec 17, priced at $726 found 4 days ago

Mon, Jul 28 - Tue, Sep 9

ORD

O'Hare Intl.

LHR

Heathrow

$771 Roundtrip, found 1 day ago

$771

Roundtrip

found 1 day ago

Select Aer Lingus flight, departing Mon, Jul 28 from O'Hare Intl. to Heathrow, returning Tue, Sep 9, priced at $771 found 1 day ago

Mon, Jul 28 - Tue, Sep 9

ORD

O'Hare Intl.

LHR

Heathrow

$785 Roundtrip, found 1 day ago

$785

Roundtrip

found 1 day ago

Select Finnair flight, departing Mon, Jul 28 from O'Hare Intl. to Heathrow, returning Tue, Sep 9, priced at $785 found 1 day ago

Sat, Mar 14 - Sun, Mar 22

ORD

O'Hare Intl.

LHR

Heathrow

$810 Roundtrip, found 12 hours ago

$810

Roundtrip

found 12 hours ago

Select JetBlue Airways flight, departing Sat, Mar 14 from O'Hare Intl. to Heathrow, returning Sun, Mar 22, priced at $810 found 12 hours ago

Mon, Jul 28 - Tue, Sep 9

ORD

O'Hare Intl.

LHR

Heathrow

$813 Roundtrip, found 1 day ago

$813

Roundtrip

found 1 day ago

Select Iberia flight, departing Mon, Jul 28 from O'Hare Intl. to Heathrow, returning Tue, Sep 9, priced at $813 found 1 day ago