The cheapest times to fly from ORD to LHR are
- January 1st to March 11th
- August 6th to December 9th (except the weeks of August 27th and November 19th)
based on data collected exclusively by Champion Traveler across tens of millions of flights. Among all the dates above, the very cheapest time to fly from ORD to LHR is early October. Prices can be as high as $1007 for Saturday flights during late June, or as low as $380 for Tuesday flights around early October.
When to Fly to London
Flying from Chicago, IL (ORD) to London (LHR) will usually cost between $402 to $937 per person if booking more than four weeks in advance. On average the very cheapest time to fly is early October with an average ticket price of $410. Due to high demand the most expensive time to fly is late June, with an average price of $959. Planning your trip to low-cost times can easily save you $550 on economy flights and even more on first-class flights. Generally, any price below $507 can be considered a good price for a round-trip ORD to LHR flight.
See below for a graph of average weekly prices for the ORD to LHR route. All prices are for round-trip tickets in USD.
Compared to other flights, the ORD to LHR flight is cheaper than the average and costs less than the average flight leaving from Chicago. The average price per mile (for a direct flight) is $0.08, which is far below average.
Flight Prices by Day of the Week
Tuesday is usually the cheapest day to fly to LHR, and Wednesday the cheapest day to fly back into ORD. Saturdays are the most expensive days to fly out or take a return trip. Selecting flights on the least expensive days could save you up to $44 (7%) on this flight.
Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Tuesday and returning a week later will cost an average of $564. Return trip prices are from the LHR to ORD flight, and often highlight the quality of our data in showing the same trend.
Departing Prices by Day
Return Trip Prices by Day
Nonstop Flights and Layovers
Travelers looking to fly from ORD to LHR can generally find a 0-layover flight. Because there is a direct flight option the real-world direct flight time of 8 hour 5 minutes may be realistic.
Flight Questions Answered
Still have questions about flying from ORD to LHR? We’ve got answers.
Which airlines fly this route?
You can find 22 major airlines flying this route most often: Aer Lingus, Aeromexico, Air Canada, Air France, Alitalia, American, Austrian, British Airways, Brussels Airlines, Delta, Finnair, Iberia, Icelandair, KLM, LOT, Lufthansa, SAS, SWISS, Tap Air Portugal, Turkish Airlines, United, Virgin Atlantic, and potentially more during busy seasons.
How far away is it from London Heathrow Airport to Chicago O’Hare International Airport?
The distance between the two airports is roughly 3941 miles or 6342 kilometers.
How long does it take to fly from ORD to LHR?
The real-world flight time for a nonstop ORD to LHR flight is about 8 hour 5 minutes.
How many flights go between Chicago, IL and London?
It depends on the day of the week and the date, but a typical day might have around 72 available flights from ORD to LHR.
Airport Location Info
|Origination airport name||Chicago O’Hare International Airport|
|Country||the United States|
|Destination airport name||London Heathrow Airport|
|Country||the United Kingdom|
Please note that while we’ve worked hard to analyzed tens of millions of flights to get you this data, we do not calculate current live prices or guarantee pricing. Please see our partners using the links above for current offers.