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Cheap flights from London Heathrow Airport to Chicago O'Hare Intl Airport from £377

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 10/6. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — ORD
15 Apr — 22 Apr1
1 adult

Cheapflights Tip: The best prices from London Heathrow to Chicago O'Hare Intl are usually found in February or November, 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 10 April 2025.

Round-trip from

£420

One-way from

£377

Popular in

July

Cheapest in

February

Average price

£534

Good round-trip deal

£553 or less

Good one-way deal

£567 or less
Lufthansa
  • Lufthansa
  • 26/4-28/4
  • 2 total stops
  • 24h 40m total
  • London to Chicago
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10/6
  • 10/6
  • 2 total stops
  • 36h 15m total
  • London to Chicago
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Highest demand for flights based on searches. 13% potential increase in price (£70 potential increase over avg. return price).
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Cheapest flight prices on average. 2% potential price decrease (£11 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 10 April 2025.

Sat 26/407:25LHR - ORD
1 stop12h 30mLufthansa
Mon 28/422:30ORD - LHR
1 stop12h 10mLufthansa
Deal found 9/4£420
Tue 29/406:00LHR - ORD
1 stop13h 20mMultiple Airlines
Tue 6/512:00ORD - LHR
2 stops12h 30mMultiple Airlines
Deal found 8/4£421
Wed 7/506:30LHR - ORD
1 stop14h 10mVirgin Atlantic
Wed 14/513:30ORD - LHR
2 stops15h 55mVirgin Atlantic
Deal found 9/4£422
Wed 3/908:25LHR - ORD
1 stop13h 20mFinnair
Sat 27/913:20ORD - LHR
2 stops12h 30mFinnair
Deal found 9/4£423
Fri 5/913:05LHR - ORD
1 stop11h 10mIcelandair
Sat 13/919:25ORD - LHR
1 stop10h 30mIcelandair
Deal found 9/4£424
Fri 9/507:40LHR - ORD
1 stop12h 20mBritish Airways
Wed 14/522:25ORD - LHR
Nonstop7h 50mBritish Airways
Deal found 9/4£425
Sat 19/409:30LHR - ORD
1 stop16h 30mUnited Airlines
Fri 2/508:40ORD - LHR
1 stop15h 50mUnited Airlines
Deal found 8/4£432
Sat 19/408:30LHR - ORD
Nonstop9h 05mAustrian Airlines
Mon 5/516:05ORD - LHR
Nonstop8h 15mAustrian Airlines
Deal found 9/4£438
Sat 19/412:15LHR - ORD
Nonstop8h 30mAmerican Airlines
Fri 2/520:20ORD - LHR
Nonstop8h 10mAmerican Airlines
Deal found 9/4£441
Mon 1/908:40LHR - ORD
1 stop12h 00mDelta
Tue 16/918:10ORD - LHR
1 stop11h 15mDelta
Deal found 9/4£442
Sun 20/408:30LHR - ORD
2 stops16h 24mAir Canada
Tue 29/418:05ORD - LHR
1 stop9h 55mAir Canada
Deal found 9/4£443
Mon 8/906:00LHR - ORD
1 stop15h 55mSWISS
Sun 28/915:45ORD - LHR
1 stop20h 05mSWISS
Deal found 9/4£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 10 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

Sat 26/4

07:25-13:55

1 stop12h 30m

Chicago O'Hare Intl

Tue 6/5

16:00-09:40

1 stop11h 40m

£420

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Tue 29/4

06:00-13:20

1 stop13h 20m

Chicago O'Hare Intl

Tue 6/5

12:00-06:30

2 stops12h 30m

£421

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Wed 7/5

06:30-14:40

1 stop14h 10m

Chicago O'Hare Intl

Wed 14/5

13:30-11:25

2 stops15h 55m

£422

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Wed 3/9

08:25-15:45

1 stop13h 20m

Chicago O'Hare Intl

Sat 27/9

13:20-07:50

2 stops12h 30m

£423

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Tue 2/9

13:10-15:55

Nonstop8h 45m

Chicago O'Hare Intl

Tue 23/9

20:40-10:30

Nonstop7h 50m

£424

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Fri 5/9

13:05-18:15

1 stop11h 10m

Chicago O'Hare Intl

Sat 13/9

19:25-11:55

1 stop10h 30m

£424

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Wed 7/5

09:30-14:47

1 stop11h 17m

Chicago O'Hare Intl

Wed 14/5

08:40-08:35

2 stops17h 55m

£431

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Thu 24/4

08:30-11:35

Nonstop9h 05m

Chicago O'Hare Intl

Mon 5/5

21:20-11:45

Nonstop8h 25m

£438

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Mon 1/9

08:40-14:40

1 stop12h 00m

Chicago O'Hare Intl

Wed 17/9

14:00-11:25

1 stop15h 25m

£442

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Thu 11/9

13:30-22:51

1 stop15h 21m

Chicago O'Hare Intl

Sat 27/9

16:56-09:40

1 stop10h 44m

£442

Flights are sorted by cheapest return flights first.

Deals found on 9/4

Showing 1-10 of 27 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.

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 4 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 10 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 10 April 2025.

The most flights from LHR to ORD are scheduled on a Monday (53 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (48 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 10 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
7,910 reviews
Check prices

Comfort

7.9

Overall

8.0

Food

7.3

Boarding

8.2

Crew

8.5

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
7,910 reviews
Delta
8.0
Very Good
7,910 reviews
Check prices

Comfort

7.9

Overall

8.0

Food

7.3

Boarding

8.2

Crew

8.5

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
1,269 reviews
Delta
8.0
Very Good
7,910 reviews
Check prices

Comfort

7.9

Overall

8.0

Food

7.3

Boarding

8.2

Crew

8.5

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
774 reviews
Delta
8.0
Very Good
7,910 reviews
Check prices

Comfort

7.9

Overall

8.0

Food

7.3

Boarding

8.2

Crew

8.5

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
1,575 reviews
Delta
8.0
Very Good
7,910 reviews
Check prices

Comfort

7.9

Overall

8.0

Food

7.3

Boarding

8.2

Crew

8.5

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
8,636 reviews
Delta
8.0
Very Good
7,910 reviews
Check prices

Comfort

7.9

Overall

8.0

Food

7.3

Boarding

8.2

Crew

8.5

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 Lufthansa. Our recent data shows that you can find tickets from as low as £420 on this airline. Additional options worth looking into are Virgin Atlantic and Finnair, starting at £422 and £423 round-trip. Users have found that Lufthansa 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?

    £380 is the cheapest one-way deal found within the past few days, from TAP AIR PORTUGAL. You may also be able to find cheap deals on Aer Lingus and Icelandair, with prices starting from £398 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 (95%), Austrian Airlines (93%) and Brussels 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 £1,536, our data shows the cheapest flight currently is £431. When looking at the most popular route, (London Heathrow - Chicago O'Hare Intl), you can expect to pay £324 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 10 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 10 April 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£359Average£508FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Scandinavian AirlinesCheapest£368Average£516FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
TAP AIR PORTUGALCheapest£382Average£612FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
Austrian AirlinesCheapest£423Average£582FlexibilityNo cancel feeOn-time78%
Search Austrian Airlines flights
United AirlinesCheapest£425Average£600FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
LufthansaCheapest£429Average£585FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Virgin AtlanticCheapest£433Average£573FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
British AirwaysCheapest£435Average£592FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Brussels AirlinesCheapest£438Average£673FlexibilityNo cancel feeOn-timeN/A
Search Brussels Airlines flights
Aer LingusCheapest£445Average£598FlexibilityNo 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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