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Cheap flights from London Heathrow Airport to Chicago O'Hare Intl Airport from £385

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 23/6. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — ORD
3 May — 10 May1
1 adult

Cheapflights Tip: The best prices from London Heathrow to Chicago O'Hare Intl are usually found in February or September, booked 85 days in advance, depart on a Wednesday or Tuesday 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 28 April 2025.

Round-trip from

£413

One-way from

£385

Popular in

July

Cheapest in

February

Average price

£516

Good round-trip deal

£539 or less

Good one-way deal

£533 or less
Icelandair
  • Icelandair
  • 3/9-13/9
  • 2 total stops
  • 24h 40m total
  • London to Chicago
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23/6
  • 23/6
  • 2 total stops
  • 30h 37m total
  • London to Chicago
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Highest demand for flights based on searches. 13% potential increase in price (£66 potential increase over avg. return price).
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Cheapest flight prices on average. 2% potential price decrease (£10 potential savings vs. average return price).
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Average for round-trip flights in April 2025
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Price to beat on a round-trip flight from London Heathrow to Chicago O'Hare Intl.
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Price to beat on a one-way flight from London Heathrow to Chicago O'Hare Intl.
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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 28 April 2025.

Wed 3/913:05LHR - ORD
1 stop14h 10mIcelandair
Sat 13/919:25ORD - LHR
1 stop10h 30mIcelandair
Deal found 28/4£413
Sun 11/506:00LHR - ORD
1 stop12h 10mSWISS
Sun 18/515:45ORD - LHR
1 stop20h 05mSWISS
Deal found 27/4£414
Mon 5/506:00LHR - ORD
1 stop13h 20mAustrian Airlines
Thu 22/513:04ORD - LHR
1 stop11h 51mAustrian Airlines
Deal found 28/4£415
Sun 4/507:25LHR - ORD
1 stop16h 50mMultiple Airlines
Sun 11/514:20ORD - LHR
1 stop11h 35mMultiple Airlines
Deal found 27/4£416
Mon 5/508:30LHR - ORD
Nonstop9h 05mLufthansa
Mon 12/518:05ORD - LHR
Nonstop8h 15mLufthansa
Deal found 28/4£421
Fri 7/1106:40LHR - ORD
1 stop16h 05mScandinavian Airlines
Fri 14/1119:20ORD - LHR
2 stops17h 10mScandinavian Airlines
Deal found 28/4£423
Wed 17/912:15LHR - ORD
Nonstop8h 35mBritish Airways
Sun 21/922:35ORD - LHR
Nonstop7h 40mBritish Airways
Deal found 28/4£424
Mon 5/508:40LHR - ORD
1 stop11h 30mVirgin Atlantic
Fri 23/513:30ORD - LHR
1 stop10h 55mVirgin Atlantic
Deal found 28/4£424
Mon 5/506:50LHR - ORD
2 stops14h 15mAir Canada
Mon 12/514:00ORD - LHR
1 stop10h 35mAir Canada
Deal found 28/4£427
Mon 12/509:30LHR - ORD
1 stop16h 42mUnited Airlines
Tue 20/513:07ORD - LHR
1 stop11h 38mUnited Airlines
Deal found 28/4£434
Mon 5/506:30LHR - ORD
1 stop13h 40mDelta
Fri 23/518:18ORD - LHR
1 stop12h 17mDelta
Deal found 28/4£442
Mon 5/511:35LHR - ORD
1 stop11h 59mAmerican Airlines
Wed 21/511:50ORD - LHR
1 stop12h 25mAmerican Airlines
Deal found 28/4£448

Cheapflights Fare Finder

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 28 April 2025.
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

Heathrow

Fly to

O'Hare Intl

Route

Depart

Return

Price

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Wed 3/9

13:05-21:15

1 stop14h 10m

Chicago O'Hare Intl

Sat 13/9

19:25-11:55

1 stop10h 30m

£413

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Sun 11/5

06:00-12:10

1 stop12h 10m

Chicago O'Hare Intl

Sun 18/5

15:45-17:50

1 stop20h 05m

£414

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Thu 8/5

11:10-13:55

Nonstop8h 45m

Chicago O'Hare Intl

Mon 12/5

17:40-07:20

Nonstop7h 40m

£423

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Thu 8/5

08:40-14:10

1 stop11h 30m

Chicago O'Hare Intl

Mon 12/5

13:30-11:25

2 stops15h 55m

£424

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Sat 10/5

08:30-11:35

Nonstop9h 05m

Chicago O'Hare Intl

Thu 15/5

11:55-05:55

1 stop12h 00m

£427

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Mon 12/5

09:30-20:12

1 stop16h 42m

Chicago O'Hare Intl

Tue 20/5

13:07-06:45

1 stop11h 38m

£434

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Sun 11/5

06:00-12:10

1 stop12h 10m

Chicago O'Hare Intl

Sun 18/5

15:45-17:05

2 stops19h 20m

£436

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Mon 22/9

21:05-16:10

2 stops25h 05m

Chicago O'Hare Intl

Tue 7/10

19:15-21:40

1 stop20h 25m

£438

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Thu 8/5

06:30-14:10

1 stop13h 40m

Chicago O'Hare Intl

Fri 23/5

13:30-06:25

1 stop10h 55m

£442

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Fri 9/5

14:40-23:08

2 stops14h 28m

Chicago O'Hare Intl

Sun 18/5

11:50-06:15

1 stop12h 25m

£448

Flights are sorted by cheapest return flights first.

Deals found on 28/4

Showing 1-10 of 25 results
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2
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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.

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?

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 25 April 2025.

The best time to book flights from London Heathrow Airport to Chicago O'Hare Intl Airport is 85 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 28 April 2025.

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 13% 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?

Use this chart to determine the cheapest time to fly return from Heathrow to O'Hare Intl. Price data was last updated on 30 March 2025.

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.

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 28 April 2025.

The most flights from LHR to ORD are scheduled on a Wednesday (56 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (53 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 28 April 2025.
See what other customers who have flown with Delta, Finnair and Austrian 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
7,929 reviews
Check prices

Boarding

8.2

Crew

8.5

Food

7.3

Comfort

7.9

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very Good
7,929 reviews
Delta
8.0
Very Good
7,929 reviews
Check prices

Boarding

8.2

Crew

8.5

Food

7.3

Comfort

7.9

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Finnair
7.6
Good
1,273 reviews
Delta
8.0
Very Good
7,929 reviews
Check prices

Boarding

8.2

Crew

8.5

Food

7.3

Comfort

7.9

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Austrian Airlines
7.6
Good
780 reviews
Delta
8.0
Very Good
7,929 reviews
Check prices

Boarding

8.2

Crew

8.5

Food

7.3

Comfort

7.9

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
SWISS
7.5
Good
1,587 reviews
Delta
8.0
Very Good
7,929 reviews
Check prices

Boarding

8.2

Crew

8.5

Food

7.3

Comfort

7.9

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
United Airlines
7.4
Good
8,694 reviews
Delta
8.0
Very Good
7,929 reviews
Check prices

Boarding

8.2

Crew

8.5

Food

7.3

Comfort

7.9

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

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 Icelandair. Our recent data shows that you can find tickets from as low as £413 on this airline. Additional options worth looking into are SWISS and British Airways, starting at £414 and £423 round-trip. Users have found that Icelandair is 25% 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?

    £392 is the cheapest one-way deal found within the past few days, from Aer Lingus. You may also be able to find cheap deals on TAP AIR PORTUGAL and Scandinavian Airlines, with prices starting from £399 and £411, 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 United Airlines (90%), SWISS (89%) and Air Canada (87%).

  • 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 £1,232, our data shows the cheapest flight currently is £419. 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, 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 28 April 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 28 April 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£346Average£484FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Scandinavian AirlinesCheapest£356Average£501FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
TAP AIR PORTUGALCheapest£369Average£600FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
Austrian AirlinesCheapest£409Average£553FlexibilityNo cancel feeOn-time78%
Search Austrian Airlines flights
United AirlinesCheapest£410Average£580FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Virgin AtlanticCheapest£415Average£541FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
LufthansaCheapest£416Average£574FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
British AirwaysCheapest£419Average£571FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Brussels AirlinesCheapest£423Average£642FlexibilityNo cancel feeOn-timeN/A
Search Brussels Airlines flights
Aer LingusCheapest£429Average£575FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus 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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