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Cheap flights from London Heathrow Airport to Chicago O'Hare Intl Airport from £369

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 12/5. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — ORD
23 May — 30 May1
1 adult
1 adult, Economy, 0 bags
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 Thursday and return on a Sunday

Cheap 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 23 April 2026.

Thu 17/915:20
LHR
-
ORD
1 stop12h 46m
United Airlines
Sat 17/1021:30
ORD
-
LHR
Nonstop8h 25m
United Airlines
Deal found 19/4£505
Sun 13/909:30
LHR
-
ORD
1 stop13h 02m
United Airlines
Tue 13/1021:30
ORD
-
LHR
Nonstop8h 25m
United Airlines
Deal found 19/4£512
Thu 17/913:10
LHR
-
ORD
Nonstop8h 45m
British Airways
Sat 17/1017:00
ORD
-
LHR
Nonstop7h 50m
British Airways
Deal found 19/4£514
Sat 19/915:15
LHR
-
ORD
Nonstop9h 00m
British Airways
Thu 15/1019:05
ORD
-
LHR
Nonstop8h 00m
British Airways
Deal found 19/4£516
Fri 23/1006:40
LHR
-
ORD
1 stop15h 30m
Scandinavian Airlines
Sat 31/1020:20
ORD
-
LHR
1 stop17h 10m
Scandinavian Airlines
Deal found 18/4£517
Thu 26/1110:20
LHR
-
ORD
1 stop12h 25m
Scandinavian Airlines
Tue 1/1219:20
ORD
-
LHR
1 stop14h 40m
Scandinavian Airlines
Deal found 20/4£519
Fri 18/912:15
LHR
-
ORD
1 stop12h 22m
United Airlines
Sat 17/1016:25
ORD
-
LHR
Nonstop8h 20m
United Airlines
Deal found 19/4£520
Sat 19/911:10
LHR
-
ORD
Nonstop8h 40m
British Airways
Sun 11/1017:00
ORD
-
LHR
Nonstop7h 50m
British Airways
Deal found 19/4£520
Mon 11/511:05
LHR
-
ORD
Nonstop9h 05m
United Airlines
Tue 14/705:00
ORD
-
LHR
1 stop10h 25m
United Airlines
Deal found 21/4£521
Tue 1/1206:40
LHR
-
ORD
1 stop16h 05m
Scandinavian Airlines
Sun 6/1219:20
ORD
-
LHR
1 stop14h 40m
Scandinavian Airlines
Deal found 19/4£522
Wed 16/911:10
LHR
-
ORD
Nonstop8h 40m
British Airways
Wed 14/1017:00
ORD
-
LHR
Nonstop7h 50m
British Airways
Deal found 19/4£523
Mon 11/510:25
LHR
-
ORD
1 stop14h 01m
United Airlines
Mon 13/718:15
ORD
-
LHR
Nonstop8h 15m
United Airlines
Deal found 21/4£524

Find 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 23 April 2026.

Round-trip from

£505

One-way from

£369

Popular in

March

Cheapest in

September

Average price

£599

Good round-trip deal

£641 or less

Good one-way deal

£515 or less
United Airlines
  • United Airlines
  • 17/9-17/10
  • 1 total stop
  • 21h 11m total
  • London to Chicago
Search Deals
JetBlue
  • JetBlue
  • 12/5
  • 1 total stop
  • 18h 13m total
  • London to Chicago
Search Deals
Highest demand for flights based on searches. 3% potential increase in price (£14 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£11 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 2026
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

 
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 23 April 2026.
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

Cheapest return flight

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Wed 9/9

06:30-16:36

2 stops16h 06m

Chicago O'Hare Intl

Wed 23/9

10:30-06:45

1 stop14h 15m

£625

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Wed 27/5

06:40-16:10

1 stop15h 30m

Chicago O'Hare Intl

Tue 9/6

07:10-09:20

2 stops20h 10m

£654

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Wed 9/9

06:40-22:06

2 stops21h 26m

Chicago O'Hare Intl

Wed 23/9

19:15-18:50

2 stops17h 35m

£657

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Mon 4/5

08:00-10:55

Nonstop8h 55m

Chicago O'Hare Intl

Wed 20/5

18:21-06:30

1 stop30h 09m

£658

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Tue 16/6

07:25-14:00

1 stop12h 35m

Chicago O'Hare Intl

Thu 16/7

13:18-06:55

1 stop11h 37m

£694

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Tue 16/6

08:00-11:05

Nonstop9h 05m

Chicago O'Hare Intl

Tue 23/6

11:03-06:55

1 stop13h 52m

£718

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Mon 29/6

16:40-23:26

1 stop12h 46m

Chicago O'Hare Intl

Tue 7/7

16:30-06:45

Nonstop8h 15m

£723

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Tue 23/6

06:30-16:26

2 stops15h 56m

Chicago O'Hare Intl

Thu 2/7

10:05-06:20

1 stop14h 15m

£726

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Wed 3/6

21:05-16:10

2 stops25h 05m

Chicago O'Hare Intl

Tue 16/6

10:29-09:20

2 stops16h 51m

£730

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Thu 9/7

21:25-18:15

1 stop26h 50m

Chicago O'Hare Intl

Fri 17/7

19:25-11:55

1 stop10h 30m

£731

Flights are sorted by cheapest return flights first.

Deals found on 21/4

Showing 1-10 of 22 resultsSorted by cheapest first
1
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?

The best time to book flights from London Heathrow Airport to Chicago O'Hare Intl Airport is 43 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, September is the cheapest month in which you can book a flight from London Heathrow Airport to Chicago O'Hare Intl Airport (average of £434). Flying from London Heathrow Airport to Chicago O'Hare Intl Airport in March is currently the most expensive (average of £722). 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 23 April 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from London Heathrow Airport to Chicago O'Hare Intl Airport as you normally would.

How much does it cost for a return flight from London Heathrow Airport to Chicago O'Hare Intl Airport?

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 23 April 2026.
Check out reviews from past customers who have flown with Austrian Airlines,United Airlines, 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.
Austrian Airlines
7.6
Good
906 reviews
Check prices

Food

6.8

Overall

7.6

Comfort

7.3

Entertainment

6.8

Boarding

7.6

Crew

8.1

Reviews

1 / 20
10.0
Excellent

KENNETH,Mar 2026

VIE - EWR

Everything was great, took off on time, arrived on time, boarding was smooth, food and movies were great.
Austrian Airlines
7.6
Good
906 reviews
Austrian Airlines
7.6
Good
906 reviews
Check prices

Food

6.8

Overall

7.6

Comfort

7.3

Entertainment

6.8

Boarding

7.6

Crew

8.1

Reviews

1 / 20
10.0
Excellent

KENNETH,Mar 2026

VIE - EWR

Everything was great, took off on time, arrived on time, boarding was smooth, food and movies were great.
United Airlines
7.4
Good
9,638 reviews
Austrian Airlines
7.6
Good
906 reviews
Check prices

Food

6.8

Overall

7.6

Comfort

7.3

Entertainment

6.8

Boarding

7.6

Crew

8.1

Reviews

1 / 20
10.0
Excellent

KENNETH,Mar 2026

VIE - EWR

Everything was great, took off on time, arrived on time, boarding was smooth, food and movies were great.
Icelandair
7.0
Good
639 reviews
Austrian Airlines
7.6
Good
906 reviews
Check prices

Food

6.8

Overall

7.6

Comfort

7.3

Entertainment

6.8

Boarding

7.6

Crew

8.1

Reviews

1 / 20
10.0
Excellent

KENNETH,Mar 2026

VIE - EWR

Everything was great, took off on time, arrived on time, boarding was smooth, food and movies were great.
Lufthansa
6.8
Okay
7,944 reviews
Austrian Airlines
7.6
Good
906 reviews
Check prices

Food

6.8

Overall

7.6

Comfort

7.3

Entertainment

6.8

Boarding

7.6

Crew

8.1

Reviews

1 / 20
10.0
Excellent

KENNETH,Mar 2026

VIE - EWR

Everything was great, took off on time, arrived on time, boarding was smooth, food and movies were great.
British Airways
6.7
Okay
7,909 reviews
Austrian Airlines
7.6
Good
906 reviews
Check prices

Food

6.8

Overall

7.6

Comfort

7.3

Entertainment

6.8

Boarding

7.6

Crew

8.1

Reviews

1 / 20
10.0
Excellent

KENNETH,Mar 2026

VIE - EWR

Everything was great, took off on time, arrived on time, boarding was smooth, food and movies were great.

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?

    Airlines like Delta, Scandinavian Airlines, and United Airlines fly from London Heathrow Airport to Chicago O'Hare Intl Airport in about 8h 55m. The time it takes to get you to your destination can typically vary by up to 7h 11m. 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 Virgin Atlantic. Our recent data shows that you can find tickets from as low as £343 on this airline. Additional options worth looking into are Icelandair and Aer Lingus, starting at £358 and £361 round-trip. Users have found that Virgin Atlantic is 39% 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?

    £309 is the cheapest one-way deal found within the past few days, from JetBlue. You may also be able to find cheap deals on Icelandair and TAP AIR PORTUGAL, with prices starting from £323 and £334, 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 (87%), United Airlines (87%) and Brussels Airlines (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 £1,070, our data shows the cheapest flight currently is £428. When looking at the most popular route, (London Heathrow - Chicago O'Hare Intl), you can expect to pay £448 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, September is the cheapest month in which you can book a flight from London Heathrow Airport to Chicago O'Hare Intl Airport (average of £434). Flying from London Heathrow Airport to Chicago O'Hare Intl Airport in March is currently the most expensive (average of £722). 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 Chicago O'Hare Intl Airport?

Book flights to Chicago O'Hare Intl Airport if you plan to visit one of these locations
Elk Grove Village

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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 23 April 2026.
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 23 April 2026.
AirlineCheapestAverageFlexibilityOn-time
Virgin AtlanticCheapest£343Average£525FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
IcelandairCheapest£358Average£481FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Aer LingusCheapest£361Average£630FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
Scandinavian AirlinesCheapest£367Average£512FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
TAP AIR PORTUGALCheapest£383Average£507FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
Brussels AirlinesCheapest£392Average£561FlexibilityNo cancel feeOn-timeN/A
Search Brussels Airlines flights
British AirwaysCheapest£392Average£599FlexibilityNo cancel feeOn-time70%
Search British Airways flights
LufthansaCheapest£394Average£599FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Austrian AirlinesCheapest£401Average£634FlexibilityNo cancel feeOn-time78%
Search Austrian Airlines flights
United AirlinesCheapest£409Average£593FlexibilityNo cancel feeOn-time69%
Search United Airlines 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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