When did momondo last update prices for flights from London Heathrow Airport to Chicago?

Prices for flights from London Heathrow Airport to Chicago were last updated today.

How old do you have to be to fly from London Heathrow Airport to Chicago?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from London Heathrow Airport to Chicago.

What documentation or ID do you need to fly to Chicago?

The required travel and health documents for your Chicago 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. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

C$ 738 Cheap Flights from London Heathrow Airport to Chicago in 2025/26

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Find the cheapest flights from London Heathrow Airport to Chicago

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LHR-ORD

8h 35mdirect

ORD-LHR

7h 55mdirect

American Airlines

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LHR-ORD

9h 20mdirect

ORD-LHR

8h 10mdirect

Air Canada

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LHR-ORD

8h 50mdirect

ORD-LHR

7h 55mdirect

Aer Lingus

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LHR-ORD

9h 20mdirect

ORD-LHR

8h 10mdirect

Austrian Airlines

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LHR-ORD

9h 20mdirect

ORD-LHR

8h 10mdirect

SWISS

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LHR-ORD

9h 20mdirect

ORD-LHR

8h 10mdirect

United Airlines

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LHR-ORD

8h 35mdirect

ORD-LHR

7h 55mdirect

Alaska Airlines

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LHR-ORD

8h 35mdirect

ORD-LHR

7h 40mdirect

SriLankan Airlines

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LHR-ORD

8h 35mdirect

ORD-LHR

7h 55mdirect

Finnair

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LHR-ORD

8h 35mdirect

ORD-LHR

7h 55mdirect

Iberia

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LHR-ORD

8h 35mdirect

ORD-LHR

7h 40mdirect

Malaysia Airlines

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LHR-ORD

9h 20mdirect

ORD-LHR

8h 10mdirect

Brussels Airlines

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LHR-ORD

9h 20mdirect

ORD-LHR

8h 10mdirect

Lufthansa

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LHR-ORD

8h 35mdirect

ORD-LHR

7h 55mdirect

British Airways

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LHR-ORD

8h 35mdirect

ORD-LHR

7h 40mdirect

Gulf Air

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How to get the cheapest flight ticket from London Heathrow Airport to Chicago

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

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Other information

What is the cheapest month to fly to Chicago?

The month of March is another great option to travel to Chicago, with average flight prices from London Heathrow Airport averaging around C$ 833.

What is the cheapest day to depart on your flight to Chicago?

The cheapest day to depart on your flight to Chicago is on a Saturday when prices can be found for as low as C$ 888. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Tuesday because tickets tend to average around C$ 1,273. These prices are subject to change though, so be sure to set up a Price Alert for flights to Chicago.

What is the cheapest time of day to depart on your flight to Chicago?

At noon is the cheapest time of day to fly from London Heathrow Airport to Chicago when you can find flight prices for as low as C$ 972. Flying to Chicago at noon is an ideal time because this is during off-peak travel hours. In the afternoon is when there is more demand to fly to Chicago, so prices are often more expensive at around C$ 1,136 per ticket.

What is the cheapest London Heathrow to Chicago flight route?

Fly from London Heathrow to Chicago O'Hare Intl for the best London Heathrow - Chicago flight prices

How far in advance should I book a flight to Chicago?

You are more likely to see cheaper flights to Chicago from London Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Chicago for around C$ 1,002 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Chicago from London Heathrow Airport for as low as C$ 959 on momondo.

What cabin class options are available on London Heathrow to Chicago flights?

There is only 1 cabin class available to choose from on London Heathrow to Chicago 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 flights?

No. A direct flight is the cheapest option for a flight between London Heathrow Airport to Chicago.

How have London Heathrow Airport to Chicago flight prices changed over time?

As of September 2025, prices for London Heathrow Airport to Chicago flights are approximately 5% cheaper when compared to flights at the same time last year.

When to book flights from London Heathrow Airport to Chicago

Are you open to changing your travel dates? Check out the ideal times to fly from London Heathrow Airport to Chicago according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap London Heathrow Airport to Chicago (LHR to CHI) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London Heathrow Airport to Chicago

Best price found	C$ 1,363
Direct flights	None

The best one-way flight to Chicago from London Heathrow Airport in the past 72 hours is C$ 1,363. The best round-trip flight deal from London Heathrow Airport to Chicago found on momondo in the last 72 hours is C$ 959.

There are no direct flights from London Heathrow Airport to Chicago. Popular non-direct route for this connection is London Heathrow Airport - Chicago O'Hare Intl Airport.

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How far is London Heathrow to Chicago by plane?
London Heathrow and Chicago are 6330.3 km apart from one another.
When did momondo last update prices for flights from London Heathrow Airport to Chicago?
Prices for flights from London Heathrow Airport to Chicago were last updated today.
How old do you have to be to fly from London Heathrow Airport to Chicago?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from London Heathrow Airport to Chicago.
What documentation or ID do you need to fly to Chicago?
The required travel and health documents for your Chicago 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. 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?
Based on momondo bookings for flights between London Heathrow Airport and Chicago, the leading plane model is Boeing 767-300, making up 45.62% of the total bookings. Other popular models include Boeing 777 with 12.93%, Boeing 787-10 Dreamliner with 11.82%, and Boeing 787-9 Dreamliner with 7.24%.

Munster

Hammond

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Why 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 recognizable 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. All flights to Chicago from London on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from London to Chicago?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Chicago from London.

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.