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Cheap flights from London Heathrow Airport to Chicago O'Hare Intl Airport from £319

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 19/3. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — ORD
25 Feb — 4 Mar1
1 adult

The best prices from London Heathrow to Chicago O'Hare Intl are usually found in February or April, booked 80 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 20 February 2025.

Round-trip from

£418

One-way from

£319

Popular in

August

Cheapest in

February

Average price

£495

Good round-trip deal

£553 or less

Good one-way deal

£571 or less
United Airlines
  • United Airlines
  • 23/4-30/4
  • 1 total stop
  • 21h 30m total
  • London to Chicago
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19/3
  • 19/3
  • 3 total stops
  • 46h 14m total
  • London to Chicago
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Highest demand for flights based on searches. 9% potential increase in price (£50 potential increase over avg. return price).
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Cheapest flight prices on average. 1% potential price decrease (£9 potential savings vs. average return price).
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Average for round-trip flights in February 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 20 February 2025.

Wed 23/408:40LHR - ORD
1 stop13h 15mUnited Airlines
Wed 30/416:05ORD - LHR
Nonstop8h 15mUnited Airlines
Deal found 19/2£418
Mon 17/306:00LHR - ORD
1 stop14h 05mAustrian Airlines
Tue 25/313:00ORD - LHR
1 stop12h 40mAustrian Airlines
Deal found 19/2£419
Sat 26/406:00LHR - ORD
1 stop12h 10mSWISS
Fri 9/515:45ORD - LHR
1 stop21h 35mSWISS
Deal found 19/2£420
Tue 11/308:55LHR - ORD
2 stops15h 42mAir Canada
Tue 18/315:35ORD - LHR
1 stop10h 35mAir Canada
Deal found 18/2£421
Thu 6/308:55LHR - ORD
2 stops15h 50mMultiple Airlines
Mon 10/318:39ORD - LHR
1 stop12h 11mMultiple Airlines
Deal found 19/2£421
Mon 17/311:10LHR - ORD
1 stop13h 15mLufthansa
Wed 26/323:35ORD - LHR
1 stop12h 10mLufthansa
Deal found 19/2£425
Tue 15/421:25LHR - ORD
1 stop29h 50mIcelandair
Tue 29/419:30ORD - LHR
1 stop10h 25mIcelandair
Deal found 19/2£428
Sun 20/412:15LHR - ORD
Nonstop8h 30mBritish Airways
Sun 4/522:20ORD - LHR
Nonstop7h 55mBritish Airways
Deal found 19/2£429
Wed 26/211:55LHR - ORD
Nonstop8h 50mFinnair
Wed 5/316:16ORD - LHR
1 stop10h 19mFinnair
Deal found 19/2£432
Tue 18/306:20LHR - ORD
2 stops20h 06mVirgin Atlantic
Mon 24/317:30ORD - LHR
1 stop12h 05mVirgin Atlantic
Deal found 19/2£433
Thu 20/218:30LHR - ORD
1 stop27h 00mTAP AIR PORTUGAL
Sun 30/318:00ORD - LHR
1 stop12h 45mTAP AIR PORTUGAL
Deal found 19/2£437
Sat 1/308:40LHR - ORD
2 stops18h 35mDelta
Sat 29/315:15ORD - LHR
1 stop10h 40mDelta
Deal found 20/2£448

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 20 February 2025.

Fly from

Heathrow

Fly to

O'Hare Intl

Route

Depart

Return

Price

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Wed 23/4

08:40-15:55

1 stop13h 15m

Chicago O'Hare Intl

Wed 30/4

16:05-06:20

Nonstop8h 15m

£418

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Mon 17/3

06:00-15:05

1 stop14h 05m

Chicago O'Hare Intl

Tue 25/3

18:50-07:55

Nonstop8h 05m

£419

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Sat 26/4

06:00-12:10

1 stop12h 10m

Chicago O'Hare Intl

Fri 9/5

15:45-19:20

1 stop21h 35m

£420

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Tue 11/3

08:55-19:37

2 stops15h 42m

Chicago O'Hare Intl

Tue 18/3

15:35-07:10

1 stop10h 35m

£421

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Tue 15/4

21:25-21:15

1 stop29h 50m

Chicago O'Hare Intl

Tue 29/4

19:30-11:55

1 stop10h 25m

£428

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Sun 20/4

12:15-14:45

Nonstop8h 30m

Chicago O'Hare Intl

Sun 4/5

22:20-12:15

Nonstop7h 55m

£429

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Wed 23/4

09:15-11:45

Nonstop8h 30m

Chicago O'Hare Intl

Tue 29/4

17:45-07:20

Nonstop7h 35m

£430

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Thu 13/3

13:35-18:00

Nonstop9h 25m

Chicago O'Hare Intl

Wed 19/3

16:15-08:45

1 stop11h 30m

£431

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Tue 18/3

06:20-21:26

2 stops20h 06m

Chicago O'Hare Intl

Mon 24/3

17:30-10:35

1 stop12h 05m

£433

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Fri 14/3

06:50-19:55

2 stops18h 05m

Chicago O'Hare Intl

Sun 16/3

20:05-21:40

1 stop20h 35m

£441

Flights are sorted by cheapest return flights first.

Deals found on 20/2

Showing 1-10 of 28 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 14 February 2025.

The best time to book flights from London Heathrow Airport to Chicago O'Hare Intl Airport is 80 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 20 February 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 11% 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 16 February 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 20 February 2025.

The most flights from LHR to ORD are scheduled on a Monday (38 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (34 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 20 February 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
8,236 reviews
Check prices

Boarding

8.2

Overall

8.0

Food

7.3

Comfort

8.0

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
8,236 reviews
Delta
8.0
Very Good
8,236 reviews
Check prices

Boarding

8.2

Overall

8.0

Food

7.3

Comfort

8.0

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
1,274 reviews
Delta
8.0
Very Good
8,236 reviews
Check prices

Boarding

8.2

Overall

8.0

Food

7.3

Comfort

8.0

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
8,236 reviews
Check prices

Boarding

8.2

Overall

8.0

Food

7.3

Comfort

8.0

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
1,568 reviews
Delta
8.0
Very Good
8,236 reviews
Check prices

Boarding

8.2

Overall

8.0

Food

7.3

Comfort

8.0

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

Virgin Atlantic
7.5
Good
654 reviews
Delta
8.0
Very Good
8,236 reviews
Check prices

Boarding

8.2

Overall

8.0

Food

7.3

Comfort

8.0

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 United Airlines. Our recent data shows that you can find tickets from as low as £418 on this airline. Additional options worth looking into are Austrian Airlines and SWISS, starting at £419 and £420 round-trip. Users have found that United Airlines is 28% 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?

    £387 is the cheapest one-way deal found within the past few days, from Icelandair. You may also be able to find cheap deals on WestJet and Aer Lingus, with prices starting from £395 and £410, 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 (91%), Austrian Airlines (91%) and United Airlines (91%).

  • 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 £1,148, our data shows the cheapest flight currently is £439. When looking at the most popular route, (London Heathrow - Chicago O'Hare Intl), you can expect to pay £364 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 20 February 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 20 February 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£369Average£542FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Scandinavian AirlinesCheapest£377Average£531FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
TAP AIR PORTUGALCheapest£389Average£586FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
Virgin AtlanticCheapest£418Average£580FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
Austrian AirlinesCheapest£435Average£600FlexibilityNo cancel feeOn-time78%
Search Austrian Airlines flights
LufthansaCheapest£438Average£595FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
United AirlinesCheapest£441Average£625FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
British AirwaysCheapest£446Average£606FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Aer LingusCheapest£454Average£596FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
FinnairCheapest£474Average£612FlexibilityNo cancel feeOn-time76%
Search Finnair 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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