Using Netflights, you can compare different flights from London to Chicago O'hare International Airport. Flights with Icelandair are often the cheapest. But if you can’t see the dates you want, or the prices are too high, try broadening your search. Chicago O'hare International Airport is just one of the airports in Chicago, so it's worth considering other options.
There are 612 flights to or via Chicago from London. The flight normally lasts about 6382 km. We've found that London Heathrow (LHR) is the most popular airport to fly from, and Air Canada is the most popular airline. But that doesn't mean they'll be the cheapest – it's best to compare all your options.
At the moment, the cheapest date to travel on is 10 / Feb / 2025. You could also try searching by month, if you're flexible on dates. This will show you when prices are at their cheapest and their most expensive. Generally speaking, the earlier you book, the better deal you'll get.
We don't just compare flight prices. If you need to book accommodation for your trip, or you want to hire a car to explore the USA, we've got some options for you to compare. Plus, when you sort your flights and hotel in one booking, you could save even more.
