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Cheap flights from London Heathrow Airport to Chicago O'Hare Intl Airport from £355

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 17/2. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — ORD
21 Jan — 28 Jan1
1 adult

The best prices from London Heathrow to Chicago O'Hare Intl are usually found in February or January, booked 30 days in advance, depart on a Tuesday or Wednesday and return on a Wednesday

Cheap flight deals from Heathrow to O'Hare Intl

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to O'Hare Intl (ORD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 16 January 2025.

Round-trip from

£441

One-way from

£355

Popular in

August

Cheapest in

February

Average price

£540
British Airways
  • British Airways
  • 22/1-29/1
  • Nonstop
  • 16h 45m total
  • London to Chicago
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17/2
  • 17/2
  • 3 total stops
  • 47h 35m total
  • London to Chicago
Search Deals
High demand for flights, 10% potential price rise
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Best time to find cheap flights, 2% potential price drop
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Average for round-trip flights in January 2025
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Find flight deals from Heathrow to O'Hare Intl

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 16 January 2025.

Wed 22/111:00LHR - ORD
Nonstop8h 55mBritish Airways
Wed 29/117:00ORD - LHR
Nonstop7h 50mBritish Airways
Deal found 15/1£441
Wed 22/111:55LHR - ORD
Nonstop8h 50mAmerican Airlines
Wed 29/122:00ORD - LHR
Nonstop7h 40mAmerican Airlines
Deal found 15/1£442
Tue 18/210:25LHR - ORD
Nonstop9h 25mLufthansa
Mon 17/318:50ORD - LHR
Nonstop8h 05mLufthansa
Deal found 14/1£444
Wed 29/106:30LHR - ORD
1 stop14h 00mDelta
Thu 13/206:45ORD - LHR
1 stop18h 05mDelta
Deal found 14/1£446
Mon 27/110:25LHR - ORD
Nonstop9h 25mUnited Airlines
Mon 10/221:10ORD - LHR
Nonstop8h 05mUnited Airlines
Deal found 15/1£447
Wed 12/215:00LHR - ORD
1 stop22h 57mAir Canada
Wed 19/211:04ORD - LHR
2 stops14h 06mAir Canada
Deal found 15/1£450
Mon 3/207:40LHR - ORD
1 stop12h 30mMultiple Airlines
Sun 16/213:20ORD - LHR
1 stop11h 20mMultiple Airlines
Deal found 16/1£452
Sat 1/310:20LHR - ORD
1 stop13h 30mScandinavian Airlines
Fri 7/319:40ORD - LHR
1 stop14h 20mScandinavian Airlines
Deal found 16/1£456
Wed 22/114:10LHR - ORD
Nonstop8h 50mFinnair
Thu 15/521:30ORD - LHR
1 stop17h 10mFinnair
Deal found 14/1£458
Fri 28/210:25LHR - ORD
Nonstop9h 25mAustrian Airlines
Thu 6/321:10ORD - LHR
Nonstop8h 05mAustrian Airlines
Deal found 15/1£470
Sat 1/310:25LHR - ORD
Nonstop9h 25mBrussels Airlines
Wed 5/321:10ORD - LHR
Nonstop8h 05mBrussels Airlines
Deal found 15/1£470
Wed 22/111:55LHR - ORD
Nonstop8h 50mIberia
Wed 14/522:20ORD - LHR
Nonstop7h 50mIberia
Deal found 14/1£473

Find flights from Heathrow to O'Hare Intl within your budget

Customise your flight search to find flights from Heathrow to O'Hare Intl that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 16 January 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Wed 22/1

11:00-13:55

Nonstop8h 55m

Chicago O'Hare Intl

Wed 29/1

17:00-06:50

Nonstop7h 50m

£441

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Wed 22/1

11:55-14:45

Nonstop8h 50m

Chicago O'Hare Intl

Wed 29/1

22:00-11:40

Nonstop7h 40m

£442

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Tue 18/2

10:25-13:50

Nonstop9h 25m

Chicago O'Hare Intl

Mon 17/3

18:50-07:55

Nonstop8h 05m

£444

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Wed 29/1

06:30-14:30

1 stop14h 00m

Chicago O'Hare Intl

Thu 13/2

06:45-06:50

1 stop18h 05m

£446

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Mon 27/1

10:25-13:50

Nonstop9h 25m

Chicago O'Hare Intl

Mon 10/2

21:10-11:15

Nonstop8h 05m

£447

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Wed 12/2

15:00-07:57

1 stop22h 57m

Chicago O'Hare Intl

Wed 19/2

11:04-07:10

2 stops14h 06m

£450

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Mon 3/2

07:40-14:10

1 stop12h 30m

Chicago O'Hare Intl

Sun 16/2

13:20-06:40

1 stop11h 20m

£452

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Sat 1/3

10:20-17:50

1 stop13h 30m

Chicago O'Hare Intl

Fri 7/3

19:40-16:00

1 stop14h 20m

£456

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Wed 22/1

14:10-17:00

Nonstop8h 50m

Chicago O'Hare Intl

Thu 15/5

21:30-20:40

1 stop17h 10m

£458

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Fri 28/2

10:25-13:50

Nonstop9h 25m

Chicago O'Hare Intl

Thu 6/3

21:10-11:15

Nonstop8h 05m

£470

Flights are sorted by cheapest return flights first.

Deals found on 15/1

Showing 1-10 of 29 results
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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.
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.

Travel insights for flights from Heathrow to O'Hare Intl

Get recent, data-driven insights about flights from Heathrow to O'Hare Intl including ideal travel times, pricing trends, and more.

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

Use this chart to determine the optimal time to book a return flight from Heathrow to O'Hare Intl. Price data was last updated on 10 January 2025.

The best time to book flights from London Heathrow Airport to Chicago O'Hare Intl Airport is 20 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, January is the cheapest month in which you can book a flight from London Heathrow Airport to Chicago O'Hare Intl Airport (average of £595). Flying from London Heathrow Airport to Chicago O'Hare Intl Airport in July is currently the most expensive (average of £843). 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?

Find hourly flight availability from Heathrow to O'Hare Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 16 January 2025.

It’s typically best to fly out from London Heathrow Airport to Chicago O'Hare Intl Airport in the afternoon. Doing so could potentially save you 4% on the flight price compared to flying in the evening, which is usually more expensive.

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

Use this chart to determine the cheapest time to fly return from Heathrow to O'Hare Intl. Price data was last updated on 16 December 2024.

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

Weekly flight availability from London Heathrow Airport to Chicago O'Hare Intl Airport

Explore weekly flight availability from Heathrow to O'Hare Intl. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 16 January 2025.

The most flights from LHR to ORD are scheduled on a Wednesday (36 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (33 on average).

Rainfall in O'Hare Intl by month

Plan your trip to O'Hare Intl by taking into account the average rainfall totals by month.

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.

Temperature in O'Hare Intl by month

Plan your trip to O'Hare Intl by taking into account the average temperature totals by month.

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).

Reviews of airlines servicing O'Hare Intl

Get insights into the airlines that provide service to O'Hare Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to O'Hare Intl. Reviews last updated 16 January 2025.
See what other customers who have flown with Lufthansa, Icelandair and United Airlines from London to Chicago have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very Good
8,511 reviews
Check prices

Boarding

8.2

Overall

8.0

Comfort

8.0

Crew

8.6

Entertainment

7.9

Food

7.3

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta
8.0
Very Good
8,511 reviews
Delta
8.0
Very Good
8,511 reviews
Check prices

Boarding

8.2

Overall

8.0

Comfort

8.0

Crew

8.6

Entertainment

7.9

Food

7.3

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

KLM
7.8
Good
1,339 reviews
Delta
8.0
Very Good
8,511 reviews
Check prices

Boarding

8.2

Overall

8.0

Comfort

8.0

Crew

8.6

Entertainment

7.9

Food

7.3

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Finnair
7.6
Good
1,285 reviews
Delta
8.0
Very Good
8,511 reviews
Check prices

Boarding

8.2

Overall

8.0

Comfort

8.0

Crew

8.6

Entertainment

7.9

Food

7.3

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Austrian Airlines
7.6
Good
786 reviews
Delta
8.0
Very Good
8,511 reviews
Check prices

Boarding

8.2

Overall

8.0

Comfort

8.0

Crew

8.6

Entertainment

7.9

Food

7.3

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

SWISS
7.5
Good
1,598 reviews
Delta
8.0
Very Good
8,511 reviews
Check prices

Boarding

8.2

Overall

8.0

Comfort

8.0

Crew

8.6

Entertainment

7.9

Food

7.3

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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.

  • 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 British Airways. Our recent data shows that you can find tickets from as low as £441 on this airline. Additional options worth looking into are American Airlines and Lufthansa, starting at £442 and £444 round-trip. Users have found that British Airways is 26% 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?

    £356 is the cheapest one-way deal found within the past few days, from WestJet. You may also be able to find cheap deals on Icelandair and Aer Lingus, with prices starting from £366 and £393, 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 (93%), Austrian Airlines (93%) and United Airlines (93%).

  • 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 £1,366, our data shows the cheapest flight currently is £458. When looking at the most popular route, (London Heathrow - Chicago O'Hare Intl), you can expect to pay £361 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, January is the cheapest month in which you can book a flight from London Heathrow Airport to Chicago O'Hare Intl Airport (average of £595). Flying from London Heathrow Airport to Chicago O'Hare Intl Airport in July is currently the most expensive (average of £843). 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

Travelling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Evanston
Downers Grove
Schaumburg
Elk Grove Village
Beloit
Rosemont

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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 16 January 2025.
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

Top 10 airlines flying from Heathrow to O'Hare Intl

Discover the top 10 airlines that operate flights from Heathrow to O'Hare Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 16 January 2025.
AirlineCheapestAverageFlexibilityOn-time
Scandinavian AirlinesCheapest£389Average£548FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
IcelandairCheapest£392Average£562FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
TAP AIR PORTUGALCheapest£400Average£585FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
Virgin AtlanticCheapest£420Average£564FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
LufthansaCheapest£452Average£602FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
British AirwaysCheapest£456Average£618FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Aer LingusCheapest£465Average£616FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
United AirlinesCheapest£478Average£644FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
FinnairCheapest£487Average£630FlexibilityNo cancel feeOn-time76%
Search Finnair flights
IberiaCheapest£490Average£667FlexibilityNo cancel feeOn-time77%
Search Iberia flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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