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Cheap flights from Chicago O'Hare Intl Airport to London Heathrow Airport from £182

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 16/11. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — LHR
7 dez — 14 dez1
1 adult
1 adult, Economy, 0 bags

Cheapflights Tip: The best prices from Chicago O'Hare Intl to London Heathrow are usually found in April or February, booked 55 days in advance, depart on a Sunday or Thursday and return on a Wednesday

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Cheapest flights from O'Hare Intl to Heathrow
Explore the most affordable flight options available from O'Hare Intl to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 7 novembro 2025.

qua 12/1118:30ORD - LHR
1 stop19h 00mIcelandair
dom 23/1112:15LHR - ORD
1 stop11h 05mIcelandair
Deal found 5/11£415
ter 11/1118:30ORD - LHR
1 stop19h 00mIcelandair
qui 20/1120:35LHR - ORD
1 stop26h 45mIcelandair
Deal found 6/11£416
qua 12/1118:30ORD - LHR
1 stop19h 00mIcelandair
qua 19/1120:35LHR - ORD
1 stop26h 45mIcelandair
Deal found 5/11£417
seg 10/1117:56ORD - LHR
1 stop11h 44mVirgin Atlantic
ter 18/1109:00LHR - ORD
1 stop12h 10mVirgin Atlantic
Deal found 6/11£418
dom 9/1120:25ORD - LHR
1 stop20h 15mTAP AIR PORTUGAL
ter 18/1113:40LHR - ORD
1 stop31h 20mTAP AIR PORTUGAL
Deal found 6/11£419
seg 29/1218:30ORD - LHR
1 stop19h 00mIcelandair
seg 26/112:15LHR - ORD
1 stop11h 05mIcelandair
Deal found 5/11£419
qua 12/1119:10ORD - LHR
1 stop17h 45mTAP AIR PORTUGAL
qua 19/1106:00LHR - ORD
1 stop15h 00mTAP AIR PORTUGAL
Deal found 6/11£420
sex 5/1220:15ORD - LHR
1 stop15h 15mTAP AIR PORTUGAL
dom 7/1206:00LHR - ORD
1 stop14h 45mTAP AIR PORTUGAL
Deal found 5/11£421
dom 16/1115:50ORD - LHR
1 stop12h 20mAer Lingus
sex 21/1107:50LHR - ORD
1 stop12h 10mAer Lingus
Deal found 5/11£422
seg 8/1215:50ORD - LHR
1 stop11h 15mAer Lingus
qui 11/1208:50LHR - ORD
1 stop11h 10mAer Lingus
Deal found 4/11£422
ter 11/1119:40ORD - LHR
1 stop11h 45mAer Lingus
sex 14/1108:50LHR - ORD
1 stop11h 10mAer Lingus
Deal found 6/11£423
seg 10/1119:40ORD - LHR
1 stop9h 45mAer Lingus
qui 13/1108:50LHR - ORD
1 stop11h 10mAer Lingus
Deal found 5/11£424

Cheap flight deals from O'Hare Intl to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from O'Hare Intl (ORD) to Heathrow (LHR). 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 7 novembro 2025.

Round-trip from

£415

One-way from

£182

Popular in

June

Cheapest in

April

Average price

£528

Good round-trip deal

£500 or less

Good one-way deal

£304 or less
Scandinavian Airlines
  • Scandinavian Airlines
  • 2/3-5/3
  • 2 total stops
  • 28h 45m total
  • Chicago to London
Search Deals
16/11
  • 16/11
  • 1 total stop
  • 17h 40m total
  • Chicago to London
Search Deals
Highest demand for flights based on searches. 20% potential increase in price (£117 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (£25 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2025
Search Deals
Price to beat on a round-trip flight from Chicago O'Hare Intl to London Heathrow.
Search Deals
Price to beat on a one-way flight from Chicago O'Hare Intl to London Heathrow.
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from O'Hare Intl to Heathrow 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 7 novembro 2025.
Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to London Heathrow Airport that are best for you.

Fly from

O'Hare Intl

Fly to

Heathrow

Route

Depart

Return

Price

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

ter 2/12

21:45-11:35

Nonstop7h 50m

London Heathrow

sex 12/12

11:00-13:50

Nonstop8h 50m

£444

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

seg 2/2

17:10-06:55

Nonstop7h 45m

London Heathrow

qua 18/2

11:00-13:50

Nonstop8h 50m

£450

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

qua 26/11

19:20-18:30

1 stop17h 10m

London Heathrow

ter 2/12

19:50-16:45

2 stops26h 55m

£452

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

seg 4/5

19:25-11:55

1 stop10h 30m

London Heathrow

qua 20/5

13:05-21:40

1 stop14h 35m

£457

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

sex 1/5

19:25-20:20

1 stop18h 55m

London Heathrow

qui 21/5

13:05-18:10

1 stop11h 05m

£457

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

dom 3/5

19:25-20:20

1 stop18h 55m

London Heathrow

qua 20/5

13:05-18:15

1 stop11h 10m

£457

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

seg 4/5

19:25-20:20

1 stop18h 55m

London Heathrow

sex 15/5

21:25-18:15

1 stop26h 50m

£459

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

ter 2/12

21:05-11:15

Nonstop8h 10m

London Heathrow

ter 9/12

11:10-18:25

1 stop13h 15m

£460

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

seg 19/1

20:45-10:25

Nonstop7h 40m

London Heathrow

qui 23/4

07:30-17:50

1 stop16h 20m

£461

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

ter 28/4

07:00-09:20

2 stops20h 20m

London Heathrow

seg 4/5

06:40-16:10

1 stop15h 30m

£477

Flights are sorted by cheapest return flights first.

Deals found on 6/11

Showing 1-10 of 22 results
1
2
3

Best time to book a flight from O'Hare Intl to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from O'Hare Intl 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 Chicago O'Hare Intl Airport to London Heathrow Airport

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

Use this chart to determine the optimal time to book a return flight from O'Hare Intl to Heathrow. Price data was last updated on 31 October 2025.

The best time to book flights from Chicago O'Hare Intl Airport to London Heathrow Airport is 55 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 Chicago O'Hare Intl Airport to London Heathrow Airport?

Currently, May is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to London Heathrow Airport (average of £305). Flying from Chicago O'Hare Intl Airport to London Heathrow Airport in June is currently the most expensive (average of £688). 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 ORD to LHR?

Find hourly flight availability from O'Hare Intl to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 7 novembro 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 20% on flights from Chicago O'Hare Intl Airport to London Heathrow Airport by exploring options for tickets in the afternoon.

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

Reviews of airlines servicing Heathrow

Get insights into the airlines that provide service to Heathrow. 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 Heathrow. Reviews last updated 7 novembro 2025.
Read through reviews of airlines operating flights from Chicago O'Hare Intl Airport to London Heathrow Airport, such as Finnair, Aer Lingus, andIberia. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Finnair
7.6
Good
1,335 reviews
Check prices

Crew

8.1

Food

6.7

Overall

7.6

Boarding

7.6

Comfort

7.4

Entertainment

6.9

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
Finnair
7.6
Good
1,335 reviews
Finnair
7.6
Good
1,335 reviews
Check prices

Crew

8.1

Food

6.7

Overall

7.6

Boarding

7.6

Comfort

7.4

Entertainment

6.9

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
Aer Lingus
7.2
Good
1,365 reviews
Finnair
7.6
Good
1,335 reviews
Check prices

Crew

8.1

Food

6.7

Overall

7.6

Boarding

7.6

Comfort

7.4

Entertainment

6.9

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
Iberia
7.0
Good
3,007 reviews
Finnair
7.6
Good
1,335 reviews
Check prices

Crew

8.1

Food

6.7

Overall

7.6

Boarding

7.6

Comfort

7.4

Entertainment

6.9

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
Lufthansa
6.8
Okay
7,558 reviews
Finnair
7.6
Good
1,335 reviews
Check prices

Crew

8.1

Food

6.7

Overall

7.6

Boarding

7.6

Comfort

7.4

Entertainment

6.9

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
British Airways
6.7
Okay
7,500 reviews
Finnair
7.6
Good
1,335 reviews
Check prices

Crew

8.1

Food

6.7

Overall

7.6

Boarding

7.6

Comfort

7.4

Entertainment

6.9

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.

Related info for your journey

Find useful and relevant information for your journey from O'Hare Intl to Heathrow. 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 Chicago O'Hare Intl Airport to London Heathrow Airport?

    Departing from Chicago O'Hare Intl Airport to London Heathrow Airport will take you 7h 50m. Chicago O'Hare Intl Airport and London Heathrow Airport are separated by a distance of 3939 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Chicago O'Hare Intl Airport to London Heathrow Airport round-trip?

    Currently priced at £367, Lufthansa will fly you from Chicago O'Hare Intl Airport to London Heathrow Airport and back. In addition to Lufthansa, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from American Airlines and Finnair - these airlines can fly you to your destination from £395 and £425, respectively. Lufthansa is currently priced 39% below the average price you’ll pay for this route.

  • What are the most reliable airlines from Chicago O'Hare Intl Airport to London Heathrow Airport?

    The top 3 most reliable airlines when flying from Chicago O'Hare Intl Airport to London Heathrow Airport are Gulf Air (75%), Malaysia Airlines (72%) and Air Canada (70%).

  • What are the cheapest flights from Chicago O'Hare Intl Airport to London Heathrow Airport?

    The cheapest flight price from Chicago O'Hare Intl Airport to London Heathrow Airport is £288. On average you can expect to pay £453. The most popular route, (Chicago O'Hare Intl - London Heathrow), can usually be booked for £334.

  • Can I find deals for flights from O'Hare Intl to Heathrow that include hotel bookings?

    Yes. In addition to deals on O'Hare Intl to Heathrow flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from O'Hare Intl to Heathrow?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from O'Hare Intl to Heathrow.

  • Can I find deals for business class flights from O'Hare Intl to Heathrow?

    Yes. Cheapflights offers flight deals from O'Hare Intl to Heathrow 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 Chicago O'Hare Intl Airport to London Heathrow Airport?

    Currently, May is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to London Heathrow Airport (average of £305). Flying from Chicago O'Hare Intl Airport to London Heathrow Airport in June is currently the most expensive (average of £688). 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
Milton Keynes
Croydon
Slough
Gatwick
Hounslow
Northampton
Luton
Ilford
Wembley
Deal
Hayes
Colchester
Watford
Winchester
Swindon
Crawley
Brentford
Romford
Chichester
Ipswich

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for O'Hare Intl to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.
O'Hare Intl to Gatwick flights
O'Hare Intl to London City flights
O'Hare Intl to Stansted flights
Midway to Heathrow flights
O'Hare Intl to Luton flights

Top 7 airlines flying from O'Hare Intl to Heathrow

Discover the top 7 airlines that operate flights from O'Hare Intl to Heathrow. 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 7 novembro 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest£367Average£530FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
American AirlinesCheapest£395Average£628FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
FinnairCheapest£425Average£691FlexibilityNo cancel feeOn-time76%
Search Finnair flights
IberiaCheapest£458Average£543FlexibilityNo cancel feeOn-time77%
Search Iberia flights
Aer LingusCheapest£461Average£595FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
British AirwaysCheapest£462Average£587FlexibilityNo cancel feeOn-time70%
Search British Airways flights
United AirlinesCheapest£474Average£632FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Fly with Cheapflights

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How does Cheapflights help users find flights from O'Hare Intl to Heathrow?

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Why should you use Cheapflights to find cheap flight tickets from O'Hare Intl to Heathrow?

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Can Cheapflights find flights from O'Hare Intl to Heathrow with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from O'Hare Intl to Heathrow flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from O'Hare Intl to Heathrow become cheaper?

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