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Cheap flights from Chicago to London Heathrow Airport from £142

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 8/1. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — LHR
4 Nov — 11 Nov1
1 adult

The best prices from Chicago to London Heathrow are usually found in February or November, booked 75 days in advance, depart on a Monday or Thursday and return on a Wednesday

Cheap flight deals from Chicago to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Chicago (CHI) 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 30 October 2024.

Round-trip from

£316

One-way from

£142

Popular in

June

Cheapest in

February
Scandinavian Airlines
  • Scandinavian Airlines
  • 17/11-21/11
  • 2 total stops
  • 30h 00m total
  • Chicago to London
Search Deals
Icelandair
  • Icelandair
  • 8/1
  • 1 total stop
  • 19h 00m total
  • Chicago to London
Search Deals
High demand for flights, 31% potential price rise
Search Deals
Best time to find cheap flights, 21% potential price drop
Search Deals

Find flight deals from Chicago to Heathrow

Cheapest flights from Chicago to Heathrow
Explore the most affordable flight options available from Chicago to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 October 2024.

Mon 30/1219:10ORD - LHR
1 stop16h 30mScandinavian Airlines
Sun 19/117:00LHR - ORD
1 stop28h 50mScandinavian Airlines
Deal found 30/10£447
Tue 12/1118:30ORD - LHR
1 stop19h 00mIcelandair
Sun 24/1120:40LHR - ORD
1 stop26h 40mIcelandair
Deal found 29/10£448
Sun 8/1208:51ORD - LHR
2 stops30h 44mTAP AIR PORTUGAL
Tue 10/1218:30LHR - ORD
1 stop27h 00mTAP AIR PORTUGAL
Deal found 30/10£454
Wed 4/1222:05ORD - LHR
Nonstop7h 35mIberia
Wed 11/1206:15LHR - ORD
1 stop14h 15mIberia
Deal found 29/10£464
Mon 4/1113:55ORD - LHR
1 stop10h 55mVirgin Atlantic
Mon 11/1106:30LHR - ORD
1 stop14h 00mVirgin Atlantic
Deal found 28/10£467
Fri 8/1121:10ORD - LHR
Nonstop8h 05mMultiple Airlines
Sun 10/1108:55LHR - ORD
1 stop13h 20mMultiple Airlines
Deal found 28/10£468
Mon 4/1119:05ORD - LHR
1 stop31h 00mSWISS
Mon 11/1117:10LHR - ORD
1 stop29h 05mSWISS
Deal found 28/10£470
Wed 4/1217:00ORD - LHR
Nonstop7h 50mBritish Airways
Wed 11/1215:45LHR - ORD
Nonstop9h 00mBritish Airways
Deal found 29/10£477
Fri 8/1121:10ORD - LHR
Nonstop8h 05mUnited Airlines
Sun 10/1108:55LHR - ORD
1 stop13h 20mUnited Airlines
Deal found 30/10£478
Sun 17/1114:17MDW - LHR
1 stop10h 48mVirgin Atlantic
Tue 26/1110:50LHR - MDW
1 stop13h 04mVirgin Atlantic
Deal found 29/10£479
Wed 13/1111:35ORD - LHR
1 stop13h 35mAir Canada
Wed 20/1106:50LHR - ORD
2 stops13h 55mAir Canada
Deal found 29/10£484
Sun 10/1122:05ORD - LHR
Nonstop7h 35mFinnair
Wed 20/1111:55LHR - ORD
Nonstop8h 50mFinnair
Deal found 29/10£493

Find flights from Chicago to Heathrow within your budget

Customise your flight search to find flights from Chicago 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 1,015,184 searches. Data last updated 30 October 2024.

Fly from

Any airport

Fly to

Any airport

Budget

£316 - £502

Route

Depart

Return

Price

Chicago O'Hare IntlLondon Heathrow

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Sun 17/11

1 stop14h 50m

London Heathrow

Thu 21/11

1 stop15h 10m

£316

Chicago O'Hare IntlLondon Heathrow

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Wed 4/12

1 stop21h 25m

London Heathrow

Tue 10/12

1 stop27h 00m

£360

Chicago O'Hare IntlLondon Heathrow

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Thu 30/1

1 stop19h 00m

London Heathrow

Sat 8/2

1 stop11h 05m

£367

Chicago O'Hare IntlLondon Heathrow

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Wed 22/1

1 stop14h 45m

London Heathrow

Sat 1/2

1 stop15h 28m

£374

Chicago O'Hare IntlLondon Heathrow

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Thu 14/11

2 stops32h 49m

London Heathrow

Sun 17/11

3 stops21h 16m

£395

Chicago O'Hare IntlLondon Heathrow

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Sun 8/12

1 stop13h 35m

London Heathrow

Tue 10/12

1 stop32h 01m

£406

Chicago O'Hare IntlLondon Heathrow

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Wed 4/12

1 stop10h 52m

London Heathrow

Tue 10/12

Nonstop8h 50m

£438

Chicago O'Hare IntlLondon Heathrow

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Mon 18/11

Nonstop7h 45m

London Heathrow

Wed 2/4

1 stop13h 55m

£468

Chicago O'Hare IntlLondon Heathrow

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Fri 8/11

Nonstop8h 05m

London Heathrow

Sun 10/11

1 stop13h 20m

£478

Chicago MidwayLondon Heathrow

MDW - LHR

MDWLHR

Chicago Midway

Wed 4/12

1 stop11h 37m

London Heathrow

Tue 10/12

1 stop13h 36m

£480

Chicago MidwayLondon Heathrow

MDW - LHR

MDWLHR

Chicago Midway

Wed 4/12

1 stop11h 37m

London Heathrow

Thu 12/12

2 stops16h 31m

£493

Chicago MidwayLondon Heathrow

MDW - LHR

MDWLHR

Chicago Midway

Mon 17/2

1 stop11h 05m

London Heathrow

Wed 5/3

1 stop13h 19m

£502

Flights are sorted by cheapest first

Deals found on 28/10

Best time to book a flight from Chicago to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Chicago 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 Chicago to Heathrow

Get recent, data-driven insights about flights from Chicago to Heathrow including ideal travel times, pricing trends, and more.

How far ahead should I book a flight from Chicago to London Heathrow Airport?

Use this chart to determine the optimal time to book a return flight from Chicago to Heathrow. Price data was last updated on 25 October 2024.

Booking 75 days in advance of your planned departure date is, on average, the best time to get cheap flights from Chicago to London Heathrow Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

Find deals

What is the cheapest month to book a flight from Chicago to London Heathrow Airport?

Currently, January is the cheapest month in which you can book a flight from Chicago to London Heathrow Airport (average of £112). Flying from Chicago to London Heathrow Airport in July is currently the most expensive (average of £159). 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 CHI to LHR?

Find hourly flight availability from Chicago 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 30 October 2024.

It’s typically best to fly out from Chicago to London Heathrow Airport in the morning. Doing so could potentially save you 11% on the flight price compared to flying in the afternoon, which is usually more expensive.

Rainfall in Heathrow by month

Plan your trip to Heathrow by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in London Heathrow Airport ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London Heathrow Airport when rainfall is around 40.0 mm.

Temperature in Heathrow by month

Plan your trip to Heathrow by taking into account the average temperature totals by month.

If weather is an important factor for your trip to London Heathrow 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 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

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 30 October 2024.
Get a feel of what it's like to fly with Scandinavian Airlines, Icelandair and JetBlue from Chicago to London by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very Good
8,845 reviews
Check prices

Overall

8.0

Entertainment

7.9

Comfort

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Reviews

1 / 10

Overall it was good on the flight. Before the flight with checking the bag at JFK was a nightmare. It took way too long and the Delta concierge was very rude to everyone. But other than that it was fine.

Delta
8.0
Very Good
8,845 reviews
Delta
8.0
Very Good
8,845 reviews
Check prices

Overall

8.0

Entertainment

7.9

Comfort

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Reviews

1 / 10

Overall it was good on the flight. Before the flight with checking the bag at JFK was a nightmare. It took way too long and the Delta concierge was very rude to everyone. But other than that it was fine.

KLM
7.8
Good
1,352 reviews
Delta
8.0
Very Good
8,845 reviews
Check prices

Overall

8.0

Entertainment

7.9

Comfort

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Reviews

1 / 10

Overall it was good on the flight. Before the flight with checking the bag at JFK was a nightmare. It took way too long and the Delta concierge was very rude to everyone. But other than that it was fine.

Finnair
7.7
Good
1,318 reviews
Delta
8.0
Very Good
8,845 reviews
Check prices

Overall

8.0

Entertainment

7.9

Comfort

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Reviews

1 / 10

Overall it was good on the flight. Before the flight with checking the bag at JFK was a nightmare. It took way too long and the Delta concierge was very rude to everyone. But other than that it was fine.

Austrian Airlines
7.7
Good
833 reviews
Delta
8.0
Very Good
8,845 reviews
Check prices

Overall

8.0

Entertainment

7.9

Comfort

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Reviews

1 / 10

Overall it was good on the flight. Before the flight with checking the bag at JFK was a nightmare. It took way too long and the Delta concierge was very rude to everyone. But other than that it was fine.

SWISS
7.6
Good
1,641 reviews
Delta
8.0
Very Good
8,845 reviews
Check prices

Overall

8.0

Entertainment

7.9

Comfort

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Reviews

1 / 10

Overall it was good on the flight. Before the flight with checking the bag at JFK was a nightmare. It took way too long and the Delta concierge was very rude to everyone. But other than that it was fine.

Related info for your journey

Find useful and relevant information for your journey from Chicago to Heathrow. 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 Chicago to London Heathrow Airport round-trip?

    Scandinavian Airlines, at £316, was found to be the cheapest airline from Chicago to London Heathrow Airport.Alternate airlines flying return to your destination include TAP AIR PORTUGAL and Icelandair. Scandinavian Airlines is priced at 47% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from Chicago to London Heathrow Airport one-way?

    One-way options have recently been found by users for as low as £142 on Icelandair. Other airlines that offer cheap prices include SWISS from £223 and TAP AIR PORTUGAL from £236 one-way.

  • What are the most reliable airlines from Chicago to London Heathrow Airport?

    The top 3 most reliable airlines when flying from Chicago to London Heathrow Airport are Brussels Airlines (76%), Air Canada (76%) and Austrian Airlines (76%).

  • What are the cheapest flights from Chicago to London Heathrow Airport?

    While on average a flight from Chicago to London Heathrow Airport is generally £3,137, our data shows the cheapest flight currently is £286. When looking at the most popular route, (Chicago O'Hare Intl - London Heathrow), you can expect to pay £316 for that flight.

  • Can I find deals for flights from Chicago to Heathrow that include hotel bookings?

    Yes. In addition to deals on Chicago to Heathrow flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Chicago to Heathrow?

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

  • Can I find deals for business class flights from Chicago to Heathrow?

    Yes. Cheapflights offers flight deals from Chicago 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 to London Heathrow Airport?

    Currently, January is the cheapest month in which you can book a flight from Chicago to London Heathrow Airport (average of £112). Flying from Chicago to London Heathrow Airport in July is currently the most expensive (average of £159). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 7 airlines flying from Chicago to Heathrow

Discover the top 7 airlines that operate flights from Chicago 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 1,015,184 searches. Data last updated 30 October 2024.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest£313Average£624FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Scandinavian AirlinesCheapest£335Average£394FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
American AirlinesCheapest£395Average£730FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
FinnairCheapest£443Average£725FlexibilityNo cancel feeOn-time76%
Search Finnair flights
Aer LingusCheapest£458Average£662FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
British AirwaysCheapest£480Average£676FlexibilityNo cancel feeOn-time70%
Search British Airways flights
IberiaCheapest£483Average£633FlexibilityNo cancel feeOn-time77%
Search Iberia flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Chicago to Heathrow?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Heathrow from Chicago today with Cheapflights!

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Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Chicago to Heathrow for you. Better yet — we are completely free to use.

Can Cheapflights find flights from Chicago to Heathrow with no change fees?

Certainly. Search results for flights to Heathrow from Chicago 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 Chicago to Heathrow become cheaper?

Yes! Start tracking prices for Chicago to Heathrow flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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