$408 Cheap American Airlines flights Chicago (ORD) to London (LHR)

Landing cheap one-way American Airlines flights from ORD to LHR from $408 on Expedia couldn’t be simpler — just filter by “Price (lowest to highest).” Or check out our budget-friendly return fares from $547 for your next getaway.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

January is one of the cheapest months to jet away to London with American Airlines. You could also find excellent prices on return and one-way fares in February.

Scoring the best American Airlines deals from ORD to LHR is typically all about timing. You can save 17% on international flights when you book 18 to 29 days before takeoff instead of four to five months ahead. Better yet, you can pocket 17% on average by buying your fare on a Sunday compared to a Friday, which is often the most expensive day to book.* It’s smart to kick off your flight search about one month before your departure date.*Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC’s global airline sales database.

Jet off on one of American Airlines’s 13 weekly direct flights from O’Hare Intl. Airport (ORD) to Heathrow Airport (LHR). To see your options, enter your dates, origin and destination and hit search. Then apply the “Nonstop” and “Airline” filters.

On average, it takes 7h 40m to travel nonstop from O’Hare Intl. Airport (ORD) to Heathrow Airport (LHR) with American Airlines.

If you’re looking for flexibility, Thursday offers the most choice for American Airlines flights from O’Hare Intl. Airport (ORD) to Heathrow Airport (LHR). Take your pick of 2 different departures.

Leaving ORD at 6:35PM UTC-6, the first American Airlines flight to LHR arrives at 8:15AM UTC+0. Flying earlier in the day means you’ll be less likely to encounter delays or cancellations.* After something later? The last American Airlines flight from ORD to LHR departs at 10:00PM UTC-6 and touches down at 11:40AM UTC+0.*Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.

American Airlines flights from O’Hare Intl. Airport (ORD) to London come in to Heathrow Airport (LHR). This is the main entry point to this destination.

Book an American Airlines flight from O’Hare Intl. Airport (ORD) to Heathrow Airport (LHR), and you’ll probably board a Boeing 787-9. Bear in mind though, that the aircraft type can vary depending on operational requirements.

Depending on the type of ticket you purchased, a fee generally applies if you modify or cancel your flight more than 24 hours after it has been confirmed. To find flexible plane tickets, select our “Changes included” or “No cancel fee” filter while looking for flights. For more details on changing or canceling your reservation, go to “Trips,” select your flight and tick “Manage Booking.”