515 € Cheap Flights from London Heathrow to Chicago O'Hare International

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Compare London Heathrow to Chicago O'Hare International flight deals

Find the cheapest month or even day of the year to fly to Chicago O'Hare International

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Flight deals from London Heathrow to Chicago O'Hare International

Looking for a cheap last-minute deal or the best return flight from London Heathrow Airport to Chicago O'Hare International Airport? If you want to travel next month, return fares start from 533 €. Find the lowest prices on one-way and return tickets right here.

Chicago.515 € per passenger.Departing Wed, 4 Nov, returning Wed, 11 Nov.Return flight with Aer Lingus and Icelandair.Outbound indirect flight with Aer Lingus, departs from London Heathrow on Wed, 4 Nov, arriving in Chicago O'Hare International.Inbound indirect flight with Icelandair, departs from Chicago O'Hare International on Wed, 11 Nov, arriving in London Heathrow.Price includes taxes and charges.From 515 €, select.

Chicago.517 € per passenger.Departing Sun, 22 Nov, returning Wed, 9 Dec.Return flight with Icelandair.Outbound indirect flight with Icelandair, departs from London Heathrow on Sun, 22 Nov, arriving in Chicago O'Hare International.Inbound indirect flight with Icelandair, departs from Chicago O'Hare International on Wed, 9 Dec, arriving in London Heathrow.Price includes taxes and charges.From 517 €, select.

Chicago.524 € per passenger.Departing Sat, 9 Jan, returning Mon, 11 Jan.Return flight with Icelandair.Outbound indirect flight with Icelandair, departs from London Heathrow on Sat, 9 Jan, arriving in Chicago O'Hare International.Inbound indirect flight with Icelandair, departs from Chicago O'Hare International on Mon, 11 Jan, arriving in London Heathrow.Price includes taxes and charges.From 524 €, select.

Chicago.533 € per passenger.Departing Wed, 14 Oct, returning Sun, 18 Oct.Return flight with TAP Air Portugal.Outbound indirect flight with TAP Air Portugal, departs from London Heathrow on Wed, 14 Oct, arriving in Chicago O'Hare International.Inbound indirect flight with TAP Air Portugal, departs from Chicago O'Hare International on Sun, 18 Oct, arriving in London Heathrow.Price includes taxes and charges.From 533 €, select.

Chicago.542 € per passenger.Departing Tue, 16 Mar, returning Sun, 21 Mar.Return flight with Icelandair.Outbound indirect flight with Icelandair, departs from London Heathrow on Tue, 16 Mar, arriving in Chicago O'Hare International.Inbound indirect flight with Icelandair, departs from Chicago O'Hare International on Sun, 21 Mar, arriving in London Heathrow.Price includes taxes and charges.From 542 €, select.

Chicago.543 € per passenger.Departing Fri, 29 Jan, returning Thu, 4 Feb.Return flight with Icelandair.Outbound indirect flight with Icelandair, departs from London Heathrow on Fri, 29 Jan, arriving in Chicago O'Hare International.Inbound indirect flight with Icelandair, departs from Chicago O'Hare International on Thu, 4 Feb, arriving in London Heathrow.Price includes taxes and charges.From 543 €, select.

Chicago.556 € per passenger.Departing Fri, 4 Dec, returning Sun, 6 Dec.Return flight with TAP Air Portugal.Outbound indirect flight with TAP Air Portugal, departs from London Heathrow on Fri, 4 Dec, arriving in Chicago O'Hare International.Inbound indirect flight with TAP Air Portugal, departs from Chicago O'Hare International on Sun, 6 Dec, arriving in London Heathrow.Price includes taxes and charges.From 556 €, select.

Chicago.556 € per passenger.Departing Fri, 30 Oct, returning Sun, 1 Nov.Return flight with TAP Air Portugal.Outbound indirect flight with TAP Air Portugal, departs from London Heathrow on Fri, 30 Oct, arriving in Chicago O'Hare International.Inbound indirect flight with TAP Air Portugal, departs from Chicago O'Hare International on Sun, 1 Nov, arriving in London Heathrow.Price includes taxes and charges.From 556 €, select.

Chicago.556 € per passenger.Departing Wed, 17 Feb, returning Wed, 3 Mar.Return flight with TAP Air Portugal.Outbound indirect flight with TAP Air Portugal, departs from London Heathrow on Wed, 17 Feb, arriving in Chicago O'Hare International.Inbound indirect flight with TAP Air Portugal, departs from Chicago O'Hare International on Wed, 3 Mar, arriving in London Heathrow.Price includes taxes and charges.From 556 €, select.

Chicago.556 € per passenger.Departing Fri, 5 Feb, returning Sun, 14 Feb.Return flight with TAP Air Portugal.Outbound indirect flight with TAP Air Portugal, departs from London Heathrow on Fri, 5 Feb, arriving in Chicago O'Hare International.Inbound indirect flight with TAP Air Portugal, departs from Chicago O'Hare International on Sun, 14 Feb, arriving in London Heathrow.Price includes taxes and charges.From 556 €, select.

Chicago.557 € per passenger.Departing Tue, 30 Mar, returning Fri, 9 Apr.Return flight with TAP Air Portugal.Outbound indirect flight with TAP Air Portugal, departs from London Heathrow on Tue, 30 Mar, arriving in Chicago O'Hare International.Inbound indirect flight with TAP Air Portugal, departs from Chicago O'Hare International on Fri, 9 Apr, arriving in London Heathrow.Price includes taxes and charges.From 557 €, select.

Chicago.558 € per passenger.Departing Wed, 9 Dec, returning Fri, 15 Jan.Return flight with Icelandair.Outbound indirect flight with Icelandair, departs from London Heathrow on Wed, 9 Dec, arriving in Chicago O'Hare International.Inbound indirect flight with Icelandair, departs from Chicago O'Hare International on Fri, 15 Jan, arriving in London Heathrow.Price includes taxes and charges.From 558 €, select.

Chicago.558 € per passenger.Departing Sun, 22 Nov, returning Tue, 9 Feb.Return flight with Icelandair.Outbound indirect flight with Icelandair, departs from London Heathrow on Sun, 22 Nov, arriving in Chicago O'Hare International.Inbound indirect flight with Icelandair, departs from Chicago O'Hare International on Tue, 9 Feb, arriving in London Heathrow.Price includes taxes and charges.From 558 €, select.

Chicago.558 € per passenger.Departing Thu, 10 Dec, returning Mon, 1 Mar.Return flight with Icelandair.Outbound indirect flight with Icelandair, departs from London Heathrow on Thu, 10 Dec, arriving in Chicago O'Hare International.Inbound indirect flight with Icelandair, departs from Chicago O'Hare International on Mon, 1 Mar, arriving in London Heathrow.Price includes taxes and charges.From 558 €, select.

Chicago.559 € per passenger.Departing Tue, 24 Nov, returning Tue, 12 Jan.Return flight with Icelandair.Outbound indirect flight with Icelandair, departs from London Heathrow on Tue, 24 Nov, arriving in Chicago O'Hare International.Inbound indirect flight with Icelandair, departs from Chicago O'Hare International on Tue, 12 Jan, arriving in London Heathrow.Price includes taxes and charges.From 559 €, select.

Chicago.559 € per passenger.Departing Sun, 25 Apr, returning Sat, 1 May.Return flight with TAP Air Portugal.Outbound indirect flight with TAP Air Portugal, departs from London Heathrow on Sun, 25 Apr, arriving in Chicago O'Hare International.Inbound indirect flight with TAP Air Portugal, departs from Chicago O'Hare International on Sat, 1 May, arriving in London Heathrow.Price includes taxes and charges.From 559 €, select.

Find the cheapest month to fly from London Heathrow to Chicago O'Hare International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like London Heathrow to Chicago O'Hare International flights are currently cheapest in November.

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Direct flights from London Heathrow to Chicago O'Hare International

London Heathrow to Chicago O'Hare International: Alternative routes

Compare routes from London Heathrow to Chicago below. You may find an airport to fly into that's cheaper, faster, or easier than Chicago O'Hare International.

London to Chicago: Flight information

The things to know before you go.

Cheapest flight found	515 €
Cheapest month to fly	November
Average flight time	8 hrs, 59 mins
Most popular airline	American Airlines
Average flights per week	381

Finding cheap flights from London Heathrow to Chicago O'Hare International: Frequently asked questions

How much are return flights from London Heathrow to Chicago O'Hare International?

The best price we found for a return flight from London Heathrow to Chicago O'Hare International is 515 €. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.

How long does it take to fly from London Heathrow to Chicago O'Hare International?

8 hours and 59 minutes is the average flight time from London Heathrow to Chicago O'Hare International.

Which airlines fly direct from London Heathrow to Chicago O'Hare International?

American Airlines, British Airways and Lufthansa fly direct from London Heathrow to Chicago O'Hare International.

How many flights are there a week from London Heathrow to Chicago O'Hare International?

As of September 2026, there are 381 flights per week flying from London Heathrow to Chicago O'Hare International.

When is the cheapest time to fly from London Heathrow to Chicago O'Hare International?

The cheapest month to fly from London Heathrow to Chicago O'Hare International is usually November.

Which upcoming date is cheapest to fly from London Heathrow Airport to Chicago O'Hare International Airport on?

After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from London Heathrow Airport to Chicago O'Hare International Airport on Wednesday, 4 November 2026.

Can I get a direct flight from London Heathrow Airport to Chicago O'Hare International Airport?

Yes – the average flight time is 8 hours and 59 minutes.

How can I find the best flight deal to Chicago O'Hare International?

We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Chicago O'Hare International but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

When is the best time to book flights to Chicago?

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Chicago is around 40 days in advance, so don’t leave your flight to the last minute.

Which is the cheapest airline to fly from London Heathrow Airport to Chicago O'Hare International with?

Currently, Aer Lingus and Brussels Airlines offer the cheapest flight tickets to Chicago O'Hare International.

Flying from London Heathrow Airport (LHR) to Chicago O'Hare International Airport (ORD): what you need to know

Around 8 hours 55 minutes is how long you'll be travelling on a direct flight from London Heathrow Airport to Chicago O'Hare International Airport.
Chicago is six hours behind London and observes the UTC-6 timezone.
Every week, there are 56 London Heathrow Airport to Chicago O'Hare International Airport flights. If you'd like to get going as early as possible, pick the 08:30 United Airlines flight. If you'd rather make the most of your time before you fly, the latest flight is at 15:45 with British Airways.
Your LHR to ORD flight won't wait if you're late, so show up at the airport on time. Arrive up to one hour in advance for domestic flights and two hours ahead when you're flying internationally.
You'll likely experience longer queues during popular months such as July. Arriving up to four hours in advance for international flights and two hours for domestic departures will help ensure a smooth travel experience.
You'll find a variety of airlines operating direct flights from London Heathrow Airport to Chicago O'Hare International Airport. When you're ready to start your Chicago adventure, let one of these carriers take you to this memorable corner of the United States:
United tops the list for bookings on this route.
United is the most punctual carrier that operates LHR to ORD flights. An impressive 88.4% of its services on this route land on time.
Think about adding a stopover when booking your ticket from London Heathrow Airport to Chicago O'Hare International Airport. Just deselect 'Direct flights only' to break up your journey, or maybe even explore a new city along the way. Check out these options between LHR and ORD:
- Toronto Pearson International Airport
- Dublin Airport
- Montreal Pierre Elliott Trudeau Airport

How to find the cheapest flights from London Heathrow Airport (LHR) to Chicago O'Hare International Airport (ORD)

At the moment, 354 € is the lowest price we've seen for a one-way London Heathrow Airport to Chicago O'Hare International Airport flight. The best price for a return ticket is 515 €. Bear in mind that fares can change due to availability at the time of booking.
To find cheap tickets from LHR to ORD, book in advance. Airlines typically offer their most competitively priced fares when flights are first released.
May is the cheapest month for flights from London Heathrow Airport to Chicago O'Hare International Airport. If you're looking to travel during a different time of year, the 'Whole month' tool will show you the lowest prices across every month.
Spend less time searching for cheap flights from LHR to ORD by setting up a Price Alert. You'll get an email or notification through the app when a lower fare pops up.
Select your preferred arrival and departure times, airlines and number of stops with the filters. Or sort your results by 'Cheapest' to find the best deals on flights from London Heathrow Airport to Chicago O'Hare International Airport.

Handy information about London Heathrow Airport (LHR)

Of the flights that depart from London Heathrow Airport, 78% land on schedule at their destination.
To reach London Heathrow Airport from central London, it'll take around 45 minutes by car. This depends on traffic though. It's approximately 24 kilometres from the airport to the city centre.
The trip when using public transport takes about 25 minutes.
Get your holiday off to a relaxed start by staying near LHR. Whether you're catching an early flight from London Heathrow Airport to Chicago O'Hare International Airport or just don't like being rushed, these hotels have you covered:

Arriving at Chicago O'Hare International Airport (ORD)

Book a hotel near ORD if you're catching a late London Heathrow Airport to Chicago O'Hare International Airport flight. Settle into one of these options and skip the long transfer after landing:
Go where the road takes you with a Chicago O'Hare International Airport rental car. Pick up a set of wheels from Routes Car Rentals, Dollar or Budget and find adventure across Chicago and beyond.
Get the best deal by reserving your vehicle from Chicago O'Hare International Airport about four weeks before your trip.

Getting from Chicago O'Hare International Airport (ORD) to central Chicago

The address for ORD is 10000 West O'Hare.
From Chicago O'Hare International Airport, Chicago is approximately 27 kilometres away. It takes around 30 minutes to drive to the centre.
It typically takes 45 minutes if you're travelling on public transport.

When to fly to Chicago O'Hare International Airport (ORD)

July is the busiest month for flights from London Heathrow Airport to Chicago O'Hare International Airport. To skip the crowds, go to Chicago in March.
Lock in your flight from London Heathrow Airport to Chicago O'Hare International Airport for July if you want to explore Chicago during its warmest month. You can expect temperatures of between 16ºC (61ºF) and 28ºC (82ºF).
January sees average temperatures of between -12ºC (10ºF) and 3ºC (37ºF). Search for cheap tickets from LHR to ORD around that time if you'd rather travel in cooler conditions.

Explore more of the United States

You've visited Chicago, now it's time to discover other corners of the United States. Journey about 451 kilometres south-east to Columbus to check off its must-visit sights. From Franklin Park Conservatory and Botanical Gardens to Whetstone Park / Park of Roses and Ohio Theatre, you've got a jam-packed schedule ahead.
Around 257 kilometres south-east of Chicago, Indianapolis is another favourite stop in the United States. Start your sightseeing at Lucas Oil Stadium, Eiteljorg Museum and The Children's Museum of Indianapolis.