Cheap Flights from Chicago (ORD) to London (LHR) from HK$2,409~

If you're traveling from O'Hare Intl. Airport (ORD) to Heathrow Airport (LHR), round-trip flights start from HK$4,778. This price is based on fares available within the last 7 days on Expedia for flights departing within the next year, so don't delay. Book now and save yourself money and time. Prices and availability are subject to change. Additional terms apply.

Most flights can be canceled online, but each airline has a different set of terms and conditions. If you do need to cancel your flight, go to our Customer Service Portal and follow the instructions.

Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for O'Hare Airport to Heathrow Airport (LHR) flights, you'll see a "no change fees" filter for you to select.

With a flight distance of 6,400 kilometers between O'Hare Intl. Airport (ORD) and London Heathrow, this is a long trip. Make sure you stay hydrated and go for a short walk down the aisle every so often.

Many people like to fly with United Airlines (UA) from O'Hare Intl. Airport (ORD) to LHR. This popular airline offers 91 monthly flights, so you can easily find a flight time that's perfect for you. For more options, check out the ticket prices from British Airways (BA). This airlines operates 60 monthly flights between these airports.

It is possible to find an amazing last-minute deal from ORD to Heathrow Airport, but it's also possible to miss out altogether! As many airlines release prices up to 12 months in advance, it's worthwhile keeping an eye on fares early and being ready to book when you spot a bargain. Expedia compares carrier prices and updates flight deals frequently, so you can rest easy knowing you're always seeing the latest offers.