$323 Cheap Flights from Chicago to London

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Find The Best Dates To Fly from O'Hare Intl. to Heathrow

Amazing ORD to LHR Flight Deals

The cheapest flights to Heathrow found within the past 7 days were $502 round trip and $323 one way. Prices and availability subject to change. Additional terms may apply.

Frequently asked questions

Can I catch a flight from ORD to Heathrow Airport right now?
For info on any present London Heathrow quarantine requirements and travel advice, visit our Covid-19 Travel Advisor. Check before you arrange your flight, so you don’t get caught up.
Are there direct flights from ORD to London Heathrow?
Sometimes, a trip is all about the journey; other times, the magic is in the destination. If you’re keen to get to where you’re going fast, multiple airlines offer direct flights from O’Hare Airport to Heathrow Airport, including British Airways and United Airlines.
If I am not able to travel due to COVID-19, can I change my booking to a later date?
For more info about changing your flight to Heathrow Airport, please visit our Customer Service Portal.
How long is the flight from O'Hare Airport to London Heathrow?
It usually takes 7 hours and 44 minutes to journey from ORD to Heathrow Airport. You’ll be in your seat for a while, so amuse yourself with a movie or get stuck into the airway’s magazines.
What is the flight distance from O'Hare Intl. Airport (ORD) to Heathrow Airport (LHR)?
With 3,900 mi between O’Hare Intl. Airport (ORD) and Heathrow Airport (LHR), you’ll have more than enough time to relax. Enjoy the entertainment on board, write in your journal or snooze for a while.
What airlines fly from ORD to London Heathrow?
There are a few airlines that offer direct flights from O’Hare Intl. Airport (ORD) to Heathrow Airport. British Airways (BA) is one of the most reputable, operating roughly 60 flights every month. Don’t forget to also look up the deals on offer from United Airlines (UA). Another well-known airline, it operates 30 flights each month on the Chicago to London route. Compare the two airlines to find your perfect fare.
What airlines have practices regarding COVID-19 in place and use social distancing?
From the moment you enter the departure terminal to when you leave the arrivals terminal, if you’re flying with British Airways, Virgin Atlantic or SAS you can be sure that COVID-19 measures and social distancing rules have been adhered to. Many airlines have introduced capped capacity flights and keeping the middle seat empty.
What is the best day to buy a plane ticket?
This just in! Airfares offered on Thursdays tend to be the cheapest, according to flight demand on Travelocity in 2021. Tuesday and Wednesday prices are also good, but you may want to prepare your budget if booking during the weekend, as data shows that is when prices are generally at their highest.
What are the cheapest days to fly?
Frequent travelers may already know this, but earlier in the week can be the cheapest time to fly. In 2021, flights departing on a Monday were generally the cheapest of the week, whereas you may pay a premium for weekend flights when demand is usually high. On average, tickets were most expensive for Saturday departures, so if you need to fly out on a weekend, you might look for deals ahead of time.
How far in advance can you book a flight?
Trying to figure out how early you should book your flight? It’s possible to start comparing international airfares on Travelocity up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2021 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 0-2 weeks prior to their travel dates.*According to flight demand on Travelocity.com from January to December 2021. Savings are subject to change based on departure location, date and destination.


Traveling From
O'Hare Intl.
Traveling To
Shortest Flight Time
7 hours 38 mins
Earliest Departure Time
8:30AM CDT
Latest Departure Time
9:15PM CDT
Lowest Flight Price

Route Info

Flight path for flights from O'Hare International Airport to London Heathrow Airport

3,964.00 miles

Airlines & Aircraft Used on ORD to LHR Flight Routes

Airline Carrier
Air Canada
Boeing 737-300 pax
Air Canada
Boeing 737-700 pax
American Airlines
Airbus A320-100/200
American Airlines
Boeing 737-300 pax
American Airlines
Boeing 737-700 pax
American Airlines
Canadair Regional Jet
American Airlines
Canadair Regional Jet 700
American Airlines
De Havilland Canada DHC-8 Dash 8 all models
American Airlines
LET 410
British Airways
Airbus A330-200
Delta Air Lines
Boeing 737-500 pax
Delta Air Lines
Canadair Regional Jet 900
Boeing 777-300 pax
Jet Airways (India)
Aerospatiale/Alenia ATR 42/ ATR 72
Jet Airways (India)
Airbus A330-200
Jet Airways (India)
Boeing 737-800 (winglets) pax
Jet Airways (India)
Boeing 777-200 pax
United Airlines
Antonov AN-24
United Airlines
Antonov AN-24
United Airlines
Boeing 737-700 pax

Discover our best flights from Chicago ORD to London LHR. 

With 20 airlines to choose from on Travelocity, you can easily find the best option for you. Use our filters to sort by price, compare airlines, and find the most convenient flight times. 


Find our best return flights from Chicago ORD to London LHR at the right price  

Airfares to London LHR from Chicago ORD currently cost between $502 and $636. It’s usually cheaper to book a round trip than two separate one-way flights. Prices and availability subject to change. Additional terms may apply. 


Book one-way flights from Chicago ORD to London LHR 

If you want to be flexible about when you return, or keep your travel options open ended, a one-way flight could be just the ticket! You’ll find one-way airfares from Chicago ORD to London LHR on Travelocity starting at $323. Prices and availability subject to change. Additional terms may apply. 


Get to London LHR from Chicago ORD quicker with direct flights. 

Get to London faster, without the hassle of changing planes and moving baggage, by booking a direct flight. Expect your direct flight to LHR from ORD to take around 7 hour(s) 38 min(s).  


Find our cheapest airfares for flights from Chicago ORD to London LHR

Find cheap flight deals by using our search filters to sort results starting with the lowest price airfares to LHR from ORD. Our Price Match Promise means if you find a lower rate on Travelocity.com or on another US-based website within 24 hours of booking, we’ll credit or refund the difference.  


Get our best airfare deals for your flight from Chicago ORD to London LHR today 

If you’re flexible about when you travel, February is usually the cheapest month to fly from Chicago ORD to London LHR. If you need to be more specific, search by date and arrival and departure times.Then, compare prices across different airlines, and sort results by lowest price first. 


Book flexible airline tickets for flights to London LHR from Chicago ORD 

Some airlines let you change your travel dates without charging a fee. Use our ‘no change fee’ filter to see which flights to LHR from ORD have this option.  


Travel with confidence when you book flights to London LHR from Chicago ORD with Travelocity 

We’ve secured fantastic deals with all the main airline carriers and it’s easy to compare, choose, and book with Travelocity. With 24/7 customer service and our free 'App', we’ll always keep you moving. 

*Price based on the lowest price found within past 24 hours and based upon one night stay for two adults over the next thirty days. Prices and availability subject to change. Additional terms may apply.