Cheap flights from London Heathrow Airport to Chicago from $294
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London Heathrow Airport to Chicago departing on 9/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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TAP AIR PORTUGAL flights from London Heathrow Airport to Chicago O'Hare Intl Airport
Our best TAP AIR PORTUGAL deals on London Heathrow Airport to Chicago O'Hare Intl Airport flight tickets
British Airways flights from London Heathrow Airport to Chicago O'Hare Intl Airport
Our best British Airways deals on London Heathrow Airport to Chicago O'Hare Intl Airport flight tickets
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How to get the cheapest flight ticket from London Heathrow Airport to Chicago O'Hare Intl Airport
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to Chicago O'Hare Intl Airport?
The month of September is another great option to travel to Chicago O'Hare Intl Airport, with average flight prices from London Heathrow Airport averaging around $674.
What is the cheapest day to depart on your flight to Chicago O'Hare Intl Airport?
The cheapest day to depart on your flight to Chicago O'Hare Intl Airport is on a Friday when prices can be found for as low as $805. This is often the case because there is less demand to fly during this day of the week. On the other hand, Sunday is the most expensive day to depart from London Heathrow Airport because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $940.
What is the cheapest time of day to depart on your flight to Chicago O'Hare Intl Airport?
Flying to Chicago O'Hare Intl Airport from London Heathrow Airport in the evening is the least expensive time of day to depart. momondo users have found prices as low as $695 when looking at flights departing in the evening. Try not to purchase tickets in the afternoon because they tend to be around $953. Of course, these prices can vary depending on the time of year and what airport you fly to.
What is the cheapest London Heathrow to Chicago O'Hare Intl flight route?
Fly from London Heathrow to Chicago O'Hare Intl for the best London Heathrow - Chicago O'Hare Intl flight prices
How far in advance should I book a flight to Chicago O'Hare Intl Airport?
You are more likely to see cheaper flights to Chicago O'Hare Intl Airport from London Heathrow Airport when booking 13 weeks ahead of your departure date. In general, you can expect to find flights to Chicago O'Hare Intl Airport for around $742 when searching 13 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Chicago O'Hare Intl Airport from London Heathrow Airport for as low as $710 on momondo.
What cabin class options are available on London Heathrow to Chicago O'Hare Intl flights?
There are 4 cabin classes available to choose from on London Heathrow to Chicago O'Hare Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
Can stopping save me money on London Heathrow Airport to Chicago O'Hare Intl Airport flights?
You could potentially save up to 5% on your flight if you consider stops on a London Heathrow Airport to Chicago O'Hare Intl Airport flight.
How have London Heathrow Airport to Chicago O'Hare Intl Airport flight prices changed over time?
As of June 2025, prices for London Heathrow Airport to Chicago O'Hare Intl Airport flights are approximately 7% more expensive when compared to flights at the same time last year.
What is the cheapest airline that flies from London Heathrow to Chicago O'Hare Intl?
TAP AIR PORTUGAL, Aer Lingus, and British Airways are the most popular carriers operating from London Heathrow to Chicago O'Hare Intl
What airlines fly to Chicago O'Hare Intl Airport?
British Airways, American Airlines and Aer Lingus are the top three most popular airlines that fly to Chicago O'Hare Intl Airport from London Heathrow Airport according to our data. British Airways is the first choice among our users, with 48% of people opting to fly with this airline when traveling to Chicago O'Hare Intl Airport. Keep in mind that there are 11 different airlines that fly to Chicago O'Hare Intl Airport on a routine basis, so you have a few additional options to choose from.
How many flights depart from London Heathrow Airport to Chicago O'Hare Intl Airport on average per day?
As of June 2025, there are 51 flights per day flying from London Heathrow Airport to Chicago O'Hare Intl Airport. The most common time of day flights depart is 2:00PM, with 53% of flights taking off in the afternoon.
How many flights depart from London Heathrow Airport to Chicago O'Hare Intl Airport on average per week?
As of June 2025, 358 flights take off from London Heathrow Airport and land in Chicago O'Hare Intl Airport each week. The most common flight departure day for this route is Mon, with 15% of weekly flights taking off on this day.
When to book flights from London Heathrow Airport to Chicago O'Hare Intl Airport
Cheap London Heathrow Airport to Chicago O'Hare Intl Airport (LHR to ORD) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from London Heathrow Airport to Chicago O'Hare Intl Airport
How far is London Heathrow to Chicago O'Hare Intl by plane?
The straight-line distance from London Heathrow to Chicago O'Hare Intl is 3939.2 mi. 8h 25m is a normal flight duration for this route.
When did momondo last update prices for flights from London Heathrow Airport to Chicago O'Hare Intl Airport?
Prices for flights from London Heathrow Airport to Chicago O'Hare Intl Airport are updated daily.
How many operators does momondo search for flights from London Heathrow Airport to Chicago O'Hare Intl Airport?
As of June 2025, there are 11 operators available to choose from for flights from London Heathrow Airport to Chicago O'Hare Intl Airport.
How old do you have to be to fly from London Heathrow Airport to Chicago O'Hare Intl Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London Heathrow Airport to Chicago O'Hare Intl Airport.
What documentation or ID do you need to fly to Chicago O'Hare Intl Airport?
The required travel and health documents for your Chicago O'Hare Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Chicago O'Hare Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from London Heathrow Airport to Chicago O'Hare Intl Airport?
Based on momondo bookings for flights between London Heathrow Airport and Chicago O'Hare Intl Airport, the leading plane model is Boeing 767-300, making up 40.03% of the total bookings. Other popular models include Boeing 787-10 Dreamliner with 20.47%, Boeing 777 with 15.62%, and Boeing 777-300ER with 7.67%.
What is the most popular airline from London Heathrow Airport to Chicago O'Hare Intl Airport?
momondo data reveals that the most frequently booked airline on the route from London Heathrow Airport to Chicago O'Hare Intl Airport is British Airways, representing 33% of all bookings. The subsequent popular airlines are American Airlines at 18%, Aer Lingus at 10%, and United Airlines at 8%.
Best airlines flying from London Heathrow Airport to Chicago O'Hare Intl Airport
Compare and see reviews for airlines that fly from London Heathrow Airport to Chicago O'Hare Intl Airport with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $451 | Free Cancellation | Rating 7.0 499 reviews | |||
| PriceFrom $462 | Free Cancellation | Rating 7.3 1,388 reviews | |||
| PriceFrom $483 | Free Cancellation | Rating 7.1 1,889 reviews | |||
| PriceFrom $538 | Free Cancellation | Rating 7.4 8,793 reviews | |||
| PriceFrom $551 | Free Cancellation | Rating 6.6 7,015 reviews | |||
| PriceFrom $568 | Free Cancellation | Rating 7.1 1,117 reviews | |||
| PriceFrom $582 | Free Cancellation | Rating 7.0 2,778 reviews | |||
| PriceFrom $583 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $586 | Free Cancellation | Rating 7.6 802 reviews | |||
| PriceFrom $607 | Free Cancellation | Rating 7.6 1,290 reviews |
Austrian Airlines Flights From London Heathrow Airport to Chicago O'Hare Intl Airport
Austrian Airlines flies from London Heathrow Airport to Chicago O'Hare Intl Airport around 21 times per week, with 802 momondo users rating the airline 7.6/10. The cheapest Austrian Airlines deal from London Heathrow Airport to Chicago O'Hare Intl Airport in the last 72 hours was $586 (round-trip), much lower than the average airfare cost of $987 for Austrian Airlines flights on this route.
Finnair Flights From London Heathrow Airport to Chicago O'Hare Intl Airport
Another popular option for London Heathrow Airport to Chicago O'Hare Intl Airport flights is Finnair (7.6/10, 1,290 ratings). Finnair flies from London Heathrow Airport to Chicago O'Hare Intl Airport around 32 times per week, with deals starting from $607 round-trip and rising to an average price of around $809.
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Book flights to Chicago if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from London to Chicago?
Finding the right flight to Chicago from London is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Chicago quick and easy, saving you time and money.
Can I find flights from London to Chicago with flexible booking policies on momondo?
Yes. momondo allows you to filter the results for London to Chicago flights to just show those with flexible booking policies.
How can momondo help me find flights from London to Chicago?
Once you have performed a search for London to Chicago flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.
I’m not ready to book a flight from London to Chicago right now. Can momondo alert me if prices change?
Price alerts on flights to Chicago from London are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.