Search and book London to Chicago flights
Popular flights and flight offers from London to Chicago
LHR – ORD
London - Chicago
Fri 6 Feb 2026 – Mon 9 Feb 2026
From
£446 Our cheapest flights from London to Chicago
LHR – ORD
London - Chicago
Fri 6 Feb 2026 – Mon 9 Feb 2026
From
£446