We help you find cheap flights by searching thousands of routes, across hundreds of airlines, so that you can easily compare the prices. Lufthansa is normally the cheapest airline for flying from London City Airport to Chicago O'hare International Airport. But we recommend that you check all possible airlines, to be sure of getting a great deal.
Bargain-hunters should check when public holidays are in Chicago, as prices are likely to be higher. British Airways, Lufthansa & Aer Lingus are the most popular airlines to fly with, and Lufthansa is normally the cheapest.
At the other end of the spectrum, flights in high season are very expensive. But you might be able to get a good last-minute deal. Whenever you fly, you'll have plenty of choice. There are 23 flights every week from London City Airport to or via Chicago O'hare International Airport.
Today, we've gone through 14 flights across the globe, to help you find a bargain. Did you know you can compare accommodation prices too? If you need somewhere to stay in Chicago, take a look at our hotel options to get an idea of prices.