How often are flights from London to Chicago delayed?

About 11% of weekly flights between London and Chicago have experienced delays in the past year, with the average delay time being 176 minutes.

Which airport typically offers the quickest stopover for flights from London Heathrow Airport to Chicago O'Hare Intl Airport?

Flights via Atlanta (ATL) offer the fastest connection on this route, with an average stopover time of 1h 31m.

What’s the cheapest stopover airport for flights from London Heathrow Airport to Chicago O'Hare Intl Airport?

Frankfurt am Main (FRA) is the most affordable one-stop option, with an average return flight price of £377.

Which airline has the best punctuality record on London to Chicago flights?

Over the past year, SWISS have had the lowest number of delays on this route, with just 5% of flights being delayed.

What’s the top stopover airport for flights from London Heathrow Airport to Chicago O'Hare Intl Airport?

Reykjavik (KEF) – chosen by Cheapflights users on 32% of one-stop itineraries from London Heathrow Airport to Chicago O'Hare Intl Airport on Cheapflights.

What day of the week experiences the fewest flight delays on this route?

Saturday tends to have the lowest number of delays on this route, whereas Friday has historically faced a higher average of delays compared to other days of the week.

What is the most punctual flight time for London to Chicago flights?

Historically, flights departing at night are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.

What’s the fastest stopover option from London Heathrow Airport to Chicago O'Hare Intl Airport?

Flights via Dublin (DUB) have the shortest average one-way travel time for one-stop routes: 11h 35m.

What are the cheapest airlines flying from London Heathrow Airport to Chicago O'Hare Intl Airport round-trip?

Our cheapest airline available from London Heathrow Airport to Chicago O'Hare Intl Airport is Icelandair. Our recent data shows that you can find tickets from as low as £346 on this airline. Additional options worth looking into are Virgin Atlantic and Scandinavian Airlines, starting at £350 and £361 round-trip. Users have found that Icelandair is 37% cheaper than the other options available to this destination.

What are the cheapest airlines to fly from London Heathrow Airport to Chicago O'Hare Intl Airport one-way?

£401 is the cheapest one-way deal found within the past few days, from Austrian Airlines. You may also be able to find cheap deals on British Airways and Air Canada, with prices starting from £401 and £407, respectively.

In terms of precipitation, rainfall in Chicago O'Hare Intl Airport ranges from 43.0 - 125.0 inches per month. August is typically the wettest month, when rainfall can reach 125.0 mm. January is typically the driest time to visit Chicago O'Hare Intl Airport when rainfall is around 43.0 mm.

If weather is an important factor for your trip to Chicago O'Hare Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -5.0 C).

What are the cheapest flights from London Heathrow Airport to Chicago O'Hare Intl Airport?

While on average a flight from London Heathrow Airport to Chicago O'Hare Intl Airport is generally £1,261, our data shows the cheapest flight currently is £368. When looking at the most popular route, (London Heathrow - Chicago O'Hare Intl), you can expect to pay £374 for that flight.

What are the most reliable airlines from London Heathrow Airport to Chicago O'Hare Intl Airport?

The top 3 most reliable airlines when flying from London Heathrow Airport to Chicago O'Hare Intl Airport are Air Canada (84%), Austrian Airlines (84%) and United Airlines (84%).

What are the most popular airlines that fly from London Heathrow Airport to Chicago O'Hare Intl Airport?

The most popular airlines flying from London Heathrow Airport to Chicago O'Hare Intl Airport are British Airways, Lufthansa and Finnair. Something to consider prior to booking your flight.

Can I find deals for flights from Heathrow to O'Hare Intl that include hotel bookings?

Yes. In addition to deals on Heathrow to O'Hare Intl flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from Heathrow to O'Hare Intl?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Heathrow to O'Hare Intl.

Can I find deals for business class flights from Heathrow to O'Hare Intl?

Yes. Cheapflights offers flight deals from Heathrow to O'Hare Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

£399+ Cheap Flights from London Heathrow Airport to Chicago O'Hare Intl Airport

Cheapflights Tip: The best prices from London Heathrow to Chicago O'Hare Intl are usually found in September or February, booked 44 days in advance, depart on a Wednesday or Tuesday and return on a Sunday

Find flight deals from Heathrow to O'Hare Intl

Enter your travel dates to find the best prices.

Cheapest flights from Heathrow to O'Hare Intl
Explore the most affordable flight options available from Heathrow to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 October 2025.

Mon 17/1107:05LHR - ORD

2 stops15h 40mScandinavian Airlines

Fri 6/219:20ORD - LHR

1 stop32h 00mScandinavian Airlines

Deal found 28/10£402

Thu 13/1106:40LHR - ORD

1 stop16h 05mScandinavian Airlines

Thu 11/1219:20ORD - LHR

1 stop16h 20mScandinavian Airlines

Deal found 29/10£403

Thu 13/1107:05LHR - ORD

2 stops15h 40mScandinavian Airlines

Mon 24/1119:20ORD - LHR

1 stop14h 40mScandinavian Airlines

Deal found 28/10£404

Wed 19/1110:20LHR - ORD

1 stop12h 25mScandinavian Airlines

Wed 26/1119:20ORD - LHR

2 stops15h 05mScandinavian Airlines

Deal found 29/10£405

Wed 12/1121:05LHR - ORD

2 stops25h 40mScandinavian Airlines

Sun 16/1119:20ORD - LHR

2 stops15h 05mScandinavian Airlines

Deal found 28/10£405

Sun 16/1110:20LHR - ORD

1 stop12h 25mScandinavian Airlines

Sun 23/1119:20ORD - LHR

2 stops15h 05mScandinavian Airlines

Deal found 29/10£407

Thu 13/1110:20LHR - ORD

1 stop12h 25mScandinavian Airlines

Sun 23/1119:20ORD - LHR

1 stop16h 20mScandinavian Airlines

Deal found 28/10£408

Tue 18/1119:30LHR - ORD

1 stop27h 15mScandinavian Airlines

Wed 26/1119:20ORD - LHR

2 stops17h 30mScandinavian Airlines

Deal found 29/10£408

Thu 13/1107:05LHR - ORD

2 stops15h 40mScandinavian Airlines

Mon 17/1119:20ORD - LHR

2 stops17h 30mScandinavian Airlines

Deal found 29/10£410

Best flights from Heathrow to O'Hare Intl
Discover carefully curated flight deals from Heathrow to O'Hare Intl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 30 October 2025.

Wed 21/119:50LHR - ORD

2 stops26h 55mScandinavian Airlines

Sat 24/119:20ORD - LHR

2 stops17h 30mScandinavian Airlines

Deal found 29/10£410

Thu 22/113:45LHR - ORD

1 stop32h 35mUnited Airlines

Sat 24/115:55ORD - LHR

1 stop32h 35mUnited Airlines

Deal found 28/10£435

Wed 3/1212:15LHR - ORD

1 stop11h 05mIcelandair

Tue 6/118:30ORD - LHR

1 stop19h 00mIcelandair

Deal found 28/10£452

Sat 6/1206:40LHR - ORD

1 stop16h 05mScandinavian Airlines

Sun 7/1219:20ORD - LHR

1 stop14h 40mScandinavian Airlines

Deal found 29/10£426

Mon 8/1212:15LHR - ORD

1 stop11h 05mIcelandair

Tue 6/118:30ORD - LHR

1 stop19h 00mIcelandair

Deal found 28/10£452

Wed 3/1219:30LHR - ORD

1 stop27h 15mScandinavian Airlines

Wed 7/119:20ORD - LHR

1 stop14h 40mScandinavian Airlines

Deal found 28/10£430

Wed 19/1112:15LHR - ORD

1 stop11h 05mIcelandair

Fri 28/1118:30ORD - LHR

1 stop10h 20mIcelandair

Deal found 29/10£476

Fri 5/1219:50LHR - ORD

2 stops26h 55mScandinavian Airlines

Wed 7/119:20ORD - LHR

2 stops20h 15mScandinavian Airlines

Deal found 28/10£440

Tue 18/1119:50LHR - ORD

2 stops26h 55mScandinavian Airlines

Wed 26/1119:20ORD - LHR

2 stops17h 30mScandinavian Airlines

Deal found 28/10£440

Tue 25/1119:50LHR - ORD

2 stops26h 55mScandinavian Airlines

Wed 3/1219:20ORD - LHR

2 stops17h 30mScandinavian Airlines

Deal found 28/10£441

Mon 19/110:20LHR - ORD

1 stop12h 25mScandinavian Airlines

Tue 3/207:05ORD - LHR

2 stops20h 15mScandinavian Airlines

Deal found 28/10£470

Direct flights from Heathrow to O'Hare Intl
Explore direct flight options from Heathrow to O'Hare Intl based on user searches, and compare prices and availability for your desired travel dates. Data last updated 30 October 2025.

Sat 29/1115:45LHR - ORD

Nonstop9h 00mBritish Airways

Sun 7/1221:45ORD - LHR

Nonstop7h 50mBritish Airways

Deal found 29/10£451

Tue 2/1207:25LHR - ORD

Nonstop9h 20mLufthansa

Tue 9/1217:50ORD - LHR

Nonstop8h 05mLufthansa

Deal found 28/10£482

Wed 3/1212:35LHR - ORD

Nonstop8h 50mBritish Airways

Mon 8/1221:45ORD - LHR

Nonstop7h 50mBritish Airways

Deal found 29/10£484

Wed 26/1112:35LHR - ORD

Nonstop8h 50mBritish Airways

Tue 2/1221:45ORD - LHR

Nonstop7h 50mBritish Airways

Deal found 29/10£486

Tue 25/1114:10LHR - ORD

Nonstop8h 50mBritish Airways

Tue 2/1217:10ORD - LHR

Nonstop7h 45mBritish Airways

Deal found 28/10£487

Mon 19/112:35LHR - ORD

Nonstop8h 50mBritish Airways

Tue 3/217:10ORD - LHR

Nonstop7h 45mBritish Airways

Deal found 28/10£488

Mon 2/314:10LHR - ORD

Nonstop8h 50mBritish Airways

Mon 9/318:10ORD - LHR

Nonstop7h 45mBritish Airways

Deal found 29/10£490

Mon 16/214:10LHR - ORD

Nonstop8h 50mBritish Airways

Mon 23/217:10ORD - LHR

Nonstop7h 45mBritish Airways

Deal found 28/10£491

Wed 4/312:35LHR - ORD

Nonstop8h 50mBritish Airways

Tue 10/322:45ORD - LHR

Nonstop7h 50mBritish Airways

Deal found 28/10£493

Tue 25/1114:10LHR - ORD

Nonstop8h 50mBritish Airways

Wed 3/1220:35ORD - LHR

Nonstop7h 50mBritish Airways

Deal found 28/10£499

Wed 11/311:00LHR - ORD

Nonstop8h 50mBritish Airways

Tue 17/321:45ORD - LHR

Nonstop7h 40mBritish Airways

Deal found 28/10£503

Last-minute flights from Heathrow to O'Hare Intl
Discover last-minute flight deals from Heathrow to O'Hare Intl. Data last updated 30 October 2025 and is based on user searches.

Wed 12/1119:30LHR - ORD

1 stop27h 15mScandinavian Airlines

Wed 19/1119:20ORD - LHR

1 stop14h 40mScandinavian Airlines

Deal found 27/10£402

Thu 13/1107:05LHR - ORD

2 stops15h 40mScandinavian Airlines

Mon 24/1119:20ORD - LHR

1 stop14h 40mScandinavian Airlines

Deal found 28/10£404

Thu 13/1110:20LHR - ORD

1 stop12h 25mScandinavian Airlines

Sat 22/1119:20ORD - LHR

1 stop17h 10mScandinavian Airlines

Deal found 29/10£406

Thu 13/1106:40LHR - ORD

1 stop16h 05mScandinavian Airlines

Sun 16/1119:20ORD - LHR

2 stops15h 05mScandinavian Airlines

Deal found 27/10£407

Thu 13/1110:20LHR - ORD

1 stop12h 25mScandinavian Airlines

Sun 23/1119:20ORD - LHR

1 stop16h 20mScandinavian Airlines

Deal found 28/10£408

Fri 14/1106:40LHR - ORD

1 stop16h 05mScandinavian Airlines

Sat 22/1119:20ORD - LHR

1 stop16h 20mScandinavian Airlines

Deal found 29/10£403

Wed 19/1110:20LHR - ORD

1 stop12h 25mScandinavian Airlines

Wed 26/1119:20ORD - LHR

2 stops15h 05mScandinavian Airlines

Deal found 27/10£405

Fri 21/1110:20LHR - ORD

1 stop12h 25mScandinavian Airlines

Sat 29/1119:20ORD - LHR

2 stops15h 40mScandinavian Airlines

Deal found 27/10£411

Sat 22/1113:55LHR - ORD

2 stops32h 50mScandinavian Airlines

Sat 29/1119:20ORD - LHR

1 stop20h 20mScandinavian Airlines

Deal found 28/10£408

Sun 23/1106:40LHR - ORD

2 stops16h 05mScandinavian Airlines

Sun 30/1119:20ORD - LHR

1 stop20h 20mScandinavian Airlines

Deal found 27/10£405

One-way flights from Heathrow to O'Hare Intl
Search for one-way flight options from Heathrow to O'Hare Intl. Find affordable one-way fares based on user searches. Data last updated 30 October 2025.

Sat 11/411:10LHR - ORD

Nonstop8h 40mFinnair

Deal found 27/10£399

Fri 12/1214:50LHR - ORD

2 stops30h 20mMultiple Airlines

Deal found 29/10£399

Sun 25/115:45LHR - ORD

Nonstop9h 00mBritish Airways

Deal found 28/10£401

Tue 11/1109:50LHR - ORD

2 stops27h 11mAer Lingus

Deal found 28/10£402

Wed 10/1206:00LHR - ORD

3 stops24h 09mMultiple Airlines

Deal found 28/10£402

Tue 11/1112:15LHR - ORD

1 stop35h 05mIcelandair

Deal found 29/10£403

Sat 27/1220:50LHR - ORD

2 stops23h 55mMultiple Airlines

Deal found 28/10£404

Sat 11/407:00LHR - ORD

2 stops14h 55mSWISS

Deal found 27/10£405

Wed 17/1207:30LHR - ORD

2 stops22h 13mUnited Airlines

Deal found 27/10£406

Wed 26/1114:50LHR - ORD

2 stops32h 40mMultiple Airlines

Deal found 28/10£407

Mon 29/1210:00LHR - ORD

3 stops38h 33mMultiple Airlines

Deal found 27/10£408

Wed 5/1107:50LHR - ORD

1 stop14h 20mAer Lingus

Deal found 28/10£408

Cheap flight deals from Heathrow to O'Hare Intl

Round-trip from	£402
One-way from	£399
Popular in	July
Cheapest in	September
Average price	£598
Good round-trip deal	£561 or less
Good one-way deal	£456 or less

Scandinavian Airlines
17/11-6/2
3 total stops
47h 40m total
London to Chicago

Search Deals

Finnair
11/4
Nonstop
8h 40m total
London to Chicago

Search Deals

Highest demand for flights based on searches. 12% potential increase in price (£58 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (£12 potential savings vs. average return price).

Search Deals

Average for round-trip flights in October 2025

Search Deals

Price to beat on a round-trip flight from London Heathrow to Chicago O'Hare Intl.

Search Deals

Price to beat on a one-way flight from London Heathrow to Chicago O'Hare Intl.

Search Deals

Cheapflights Fare Finder

Use the filters below to find and compare flights from London Heathrow Airport to Chicago O'Hare Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Wed 21/1

19:50-16:45

2 stops26h 55m

Chicago O'Hare Intl

Sat 24/1

19:20-18:50

2 stops17h 30m

£410

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Sat 6/12

06:40-16:45

1 stop16h 05m

Chicago O'Hare Intl

Sun 7/12

19:20-16:00

1 stop14h 40m

£426

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Wed 3/12

19:30-16:45

1 stop27h 15m

Chicago O'Hare Intl

Wed 7/1

19:20-16:00

1 stop14h 40m

£430

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Thu 22/1

13:45-16:20

1 stop32h 35m

Chicago O'Hare Intl

Sat 24/1

15:55-06:30

1 stop32h 35m

£435

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Fri 5/12

19:50-16:45

2 stops26h 55m

Chicago O'Hare Intl

Wed 7/1

19:20-21:35

2 stops20h 15m

£440

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Tue 18/11

19:50-16:45

2 stops26h 55m

Chicago O'Hare Intl

Wed 26/11

19:20-18:50

2 stops17h 30m

£440

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Tue 25/11

19:50-16:45

2 stops26h 55m

Chicago O'Hare Intl

Wed 3/12

19:20-18:50

2 stops17h 30m

£441

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Wed 3/12

12:15-17:20

1 stop11h 05m

Chicago O'Hare Intl

Tue 6/1

18:30-19:30

1 stop19h 00m

£452

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Mon 8/12

12:15-17:20

1 stop11h 05m

Chicago O'Hare Intl

Tue 6/1

18:30-19:30

1 stop19h 00m

£452

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Mon 19/1

10:20-16:45

1 stop12h 25m

Chicago O'Hare Intl

Tue 3/2

07:05-09:20

2 stops20h 15m

£470

Flights are sorted by cheapest return flights first.

Deals found on 29/10

Showing 1-10 of 19 results

Best time to book a flight from Heathrow to O'Hare Intl

Have a flexible travel schedule? Discover the best time to fly to O'Hare Intl from Heathrow with our price prediction graph.

Estimated return price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from London Heathrow Airport to Chicago O'Hare Intl Airport

Prices

Delays

How far ahead should I book a flight from London Heathrow Airport to Chicago O'Hare Intl Airport?

The best time to book flights from London Heathrow Airport to Chicago O'Hare Intl Airport is 44 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from London Heathrow Airport to Chicago O'Hare Intl Airport?

Currently, February is the cheapest month in which you can book a flight from London Heathrow Airport to Chicago O'Hare Intl Airport (average of £361). Flying from London Heathrow Airport to Chicago O'Hare Intl Airport in July is currently the most expensive (average of £509). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from LHR to ORD?

It’s typically best to fly out from London Heathrow Airport to Chicago O'Hare Intl Airport in the evening. Doing so could potentially save you 15% on the flight price compared to flying in the afternoon, which is usually more expensive.

What is the cheapest day to fly from London Heathrow Airport to Chicago O'Hare Intl Airport?

Travellers seeking maximum savings on their London Heathrow Airport to Chicago O'Hare Intl Airport flight should consider departing on Monday evenings when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing O'Hare Intl

Check out reviews from past customers who have flown with Finnair, Aer Lingus, andIcelandair from London Heathrow Airport to Chicago O'Hare Intl Airport to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Finnair

7.6

Good

1,333 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.

Finnair

7.6

Good

1,333 reviews

Finnair

7.6

Good

1,333 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2025

FRA - DFW

Aer Lingus

7.2

Good

1,361 reviews

Finnair

7.6

Good

1,333 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2025

FRA - DFW

Icelandair

7.1

Good

562 reviews

Finnair

7.6

Good

1,333 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2025

FRA - DFW

Lufthansa

6.8

Okay

7,541 reviews

Finnair

7.6

Good

1,333 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2025

FRA - DFW

British Airways

6.7

Okay

7,487 reviews

Finnair

7.6

Good

1,333 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2025

FRA - DFW

Related info for your journey

How long is the flight from London Heathrow Airport to Chicago O'Hare Intl Airport?
Airlines like Scandinavian Airlines and United Airlines fly from London Heathrow Airport to Chicago O'Hare Intl Airport in about 26h 55m. The time it takes to get you to your destination can typically vary by up to 5h 40m. The distance from London Heathrow Airport to Chicago O'Hare Intl Airport is about 3939 mi. This flight may include one or multiple stops.
What are the cheapest airlines flying from London Heathrow Airport to Chicago O'Hare Intl Airport round-trip?
Our cheapest airline available from London Heathrow Airport to Chicago O'Hare Intl Airport is Icelandair. Our recent data shows that you can find tickets from as low as £346 on this airline. Additional options worth looking into are Virgin Atlantic and Scandinavian Airlines, starting at £350 and £361 round-trip. Users have found that Icelandair is 37% cheaper than the other options available to this destination.
What are the cheapest airlines to fly from London Heathrow Airport to Chicago O'Hare Intl Airport one-way?
£401 is the cheapest one-way deal found within the past few days, from Austrian Airlines. You may also be able to find cheap deals on British Airways and Air Canada, with prices starting from £401 and £407, respectively.
What are the most reliable airlines from London Heathrow Airport to Chicago O'Hare Intl Airport?
The top 3 most reliable airlines when flying from London Heathrow Airport to Chicago O'Hare Intl Airport are Air Canada (84%), Austrian Airlines (84%) and United Airlines (84%).
What are the cheapest flights from London Heathrow Airport to Chicago O'Hare Intl Airport?
While on average a flight from London Heathrow Airport to Chicago O'Hare Intl Airport is generally £1,261, our data shows the cheapest flight currently is £368. When looking at the most popular route, (London Heathrow - Chicago O'Hare Intl), you can expect to pay £374 for that flight.
Can I find deals for flights from Heathrow to O'Hare Intl that include hotel bookings?
Yes. In addition to deals on Heathrow to O'Hare Intl flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Heathrow to O'Hare Intl?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Heathrow to O'Hare Intl.
Can I find deals for business class flights from Heathrow to O'Hare Intl?
Yes. Cheapflights offers flight deals from Heathrow to O'Hare Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from London Heathrow Airport to Chicago O'Hare Intl Airport?
Currently, February is the cheapest month in which you can book a flight from London Heathrow Airport to Chicago O'Hare Intl Airport (average of £361). Flying from London Heathrow Airport to Chicago O'Hare Intl Airport in July is currently the most expensive (average of £509). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Fly from Heathrow to O'Hare Intl on these airlines

British Airways flights from London Heathrow to Chicago O'Hare Intl

Finnair flights from London Heathrow to Chicago O'Hare Intl

Iberia flights from London Heathrow to Chicago O'Hare Intl

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Top 10 airlines flying from Heathrow to O'Hare Intl

Airline	Cheapest	Average	Flexibility	On-time
Icelandair	Cheapest£346	Average£460	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
Virgin Atlantic	Cheapest£350	Average£537	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
Scandinavian Airlines	Cheapest£361	Average£487	FlexibilityNo cancel fee	On-time77%	Search Scandinavian Airlines flights
TAP AIR PORTUGAL	Cheapest£374	Average£621	FlexibilityNo cancel fee	On-timeN/A	Search TAP AIR PORTUGAL flights
Aer Lingus	Cheapest£376	Average£597	FlexibilityNo cancel fee	On-timeN/A	Search Aer Lingus flights
Brussels Airlines	Cheapest£392	Average£550	FlexibilityNo cancel fee	On-timeN/A	Search Brussels Airlines flights
Lufthansa	Cheapest£402	Average£587	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
Austrian Airlines	Cheapest£410	Average£612	FlexibilityNo cancel fee	On-time78%	Search Austrian Airlines flights
British Airways	Cheapest£410	Average£576	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
United Airlines	Cheapest£414	Average£550	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights

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How does Cheapflights help users find flights from Heathrow to O'Hare Intl?

Deals for Heathrow to O'Hare Intl flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Heathrow to O'Hare Intl?

Cheapflights helps you find that perfect flight to O'Hare Intl from Heathrow by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from Heathrow to O'Hare Intl with no change fees?

Certainly. Search results for flights to O'Hare Intl from Heathrow shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Heathrow to O'Hare Intl become cheaper?

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Cheap flights from London Heathrow Airport to Chicago O'Hare Intl Airport from £399

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/4. Fares are subject to change and may not be available on all flights or dates of travel.

Cheapflights Tip: The best prices from London Heathrow to Chicago O'Hare Intl are usually found in September or February, booked 44 days in advance, depart on a Wednesday or Tuesday and return on a Sunday

Find flight deals from Heathrow to O'Hare Intl

Cheapest flights from Heathrow to O'Hare IntlExplore the most affordable flight options available from Heathrow to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 October 2025.

Explore the most affordable flight options available from Heathrow to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 October 2025.

Cheap flight deals from Heathrow to O'Hare Intl

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Best time to book a flight from Heathrow to O'Hare Intl

Have a flexible travel schedule? Discover the best time to fly to O'Hare Intl from Heathrow with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from London Heathrow Airport to Chicago O'Hare Intl Airport

How far ahead should I book a flight from London Heathrow Airport to Chicago O'Hare Intl Airport?

What is the cheapest month to book a flight from London Heathrow Airport to Chicago O'Hare Intl Airport?

What is the cheapest time of day to fly from LHR to ORD?

What is the cheapest day to fly from London Heathrow Airport to Chicago O'Hare Intl Airport?

How often are flights from London to Chicago delayed?

What is the most punctual flight time for London to Chicago flights?

What day of the week experiences the fewest flight delays on this route?

Which airline has the best punctuality record on London to Chicago flights?

What’s the top stopover airport for flights from London Heathrow Airport to Chicago O'Hare Intl Airport?

What’s the fastest stopover option from London Heathrow Airport to Chicago O'Hare Intl Airport?

What’s the fastest stopover option from London Heathrow Airport to Chicago O'Hare Intl Airport?

Which airport typically offers the quickest stopover for flights from London Heathrow Airport to Chicago O'Hare Intl Airport?

Reviews of airlines servicing O'Hare Intl

Related info for your journey

Find useful and relevant information for your journey from Heathrow to O'Hare Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

How long is the flight from London Heathrow Airport to Chicago O'Hare Intl Airport?

What are the cheapest airlines flying from London Heathrow Airport to Chicago O'Hare Intl Airport round-trip?

What are the cheapest airlines to fly from London Heathrow Airport to Chicago O'Hare Intl Airport one-way?

What are the most reliable airlines from London Heathrow Airport to Chicago O'Hare Intl Airport?

What are the cheapest flights from London Heathrow Airport to Chicago O'Hare Intl Airport?

Can I find deals for flights from Heathrow to O'Hare Intl that include hotel bookings?

How can I find direct flights from Heathrow to O'Hare Intl?

Can I find deals for business class flights from Heathrow to O'Hare Intl?

What is the cheapest month to book a flight from London Heathrow Airport to Chicago O'Hare Intl Airport?

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Fly from Heathrow to O'Hare Intl on these airlines

Choose from the following airlines for your flight from Heathrow to O'Hare Intl. Flights are based on user searches made on Cheapflights and were last updated on 30 October 2025.

Top 10 airlines flying from Heathrow to O'Hare Intl

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How does Cheapflights help users find flights from Heathrow to O'Hare Intl?

Why should you use Cheapflights to find cheap flight tickets from Heathrow to O'Hare Intl?

Can Cheapflights find flights from Heathrow to O'Hare Intl with no change fees?

Can Cheapflights notify me if prices for flights from Heathrow to O'Hare Intl become cheaper?

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Cheapest flights from Heathrow to O'Hare Intl
Explore the most affordable flight options available from Heathrow to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 October 2025.