$408 Cheap British Airways flights Chicago (ORD) to London (LHR)

Landing cheap one-way British Airways flights from ORD to LHR from $408 on Expedia couldn’t be easier — just filter by “Price (lowest to highest).” Or check out our budget-friendly return fares from $548 for your next adventure.**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.

Look for one-way or return flights to London in January or February. You could find lower fares with British Airways during these off-peak months.

Search for British Airways flights from ORD to LHR about one month before you want to go. The cheapest time to reserve an international flight is usually 18 to 29 days ahead of your travel date when you can save 17% versus booking four to five months in advance. No matter your itinerary and fare class, the best day to book international airfare is usually Sunday. Friday is often the most expensive. Travelers booking on a Sunday can save an average of 17% compared to those who book on a Friday.**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.

Yes, you can fly from O’Hare Intl. Airport (ORD) to Heathrow Airport (LHR) on any of British Airways’s 9 direct weekly flights. Use our “Nonstop” and “Airline” filters to find the British Airways flight that’ll get you to LHR at your preferred time.

Leave O’Hare Intl. Airport (ORD) for Heathrow Airport (LHR) on a nonstop British Airways flight, and you’ll be in the air for around 7h 49m.

If it’s flexibility you’re after, Saturday offers the most choice for British Airways flights from O’Hare Intl. Airport (ORD) to Heathrow Airport (LHR). Take your pick of 2 different departures.

The first flight from ORD to LHR with British Airways leaves at 5:00PM UTC-6. You’ll touch down at 6:50AM UTC+0. The last British Airways flight of the day leaves at 9:45PM UTC-6 and arrives at 11:30AM UTC+0. With around 20% fewer cancellations for morning and mid-morning departures, jetting out early is usually the smartest option.**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.

British Airways flights from O’Hare Intl. Airport (ORD) to London land at Heathrow Airport (LHR). This is the main entry point to this destination.

British Airways allows travelers to bring 1 checked-in bag weighing up to 50 lb with maximum dimensions of 29 inches x 15 inches x 16 inches on standard economy flights from ORD to LHR. Additionally, you can bring 2 cabin bags with you in the cabin. This hand luggage must not exceed 19 inches x 9 inches x 17 inches and weigh no more than 50 lb. Baggage rules can differ based on your fare type and cabin class, so double-check your booking or British Airways’s website to avoid any additional fees at the airport.

Heading from ORD to LHR with British Airways comes with a variety of perks, such as an excellent in-flight experience and a 4-star airline rating. Plus, when booking through Expedia, One Key™ members can collect OneKeyCash™* to use on select future travel purchases. That’s on top of the British Airways Executive Club points you can earn with British Airways.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

For the O’Hare Intl. Airport (ORD) to Heathrow Airport (LHR) route, British Airways typically uses Boeing 787-9 and Boeing 777 planes. Don’t forget that last-minute changes are possible for operational reasons, meaning your flight could be on another aircraft.

It’s generally possible to cancel or reschedule your flight, although additional charges may apply if you booked more than 24 hours ago. Prefer to keep your options open? Apply the “Changes included” or “No cancel fee” filter to find flights that won’t charge you extra if you need to adjust your plans. To make modifications, head to “Trips,” select your flight and click on “Manage Booking” for further information.