Find Cheap Flights from Chicago to London

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Cheap flights from Chicago to London from $422

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Chicago to London
Apr 20­ – ­May 1
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Chicago to London
May 20­ – ­May 27
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Chicago to London
Apr 20­ – ­Apr 28
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Chicago to London
May 20­ – ­Jun 2
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Chicago to London
Feb 23­ – ­Mar 3
Aer Lingus
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Chicago to London
Mar 23­ – ­Mar 31
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Chicago to London
Feb 24­ – ­Mar 1
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Chicago to London
Mar 23­ – ­Apr 1
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Chicago to London
Jun 22­ – ­Jun 30
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Chicago to London
Jun 20­ – ­Jul 3
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