How long is the flight from London to Chicago O'Hare Intl Airport?

United Airlines, Scandinavian Airlines, and British Airways can get you from London to Chicago O'Hare Intl Airport in just under 19h 45m. Your travel time can differ by up to 19h 55m. There are 3939 mi between London and Chicago O'Hare Intl Airport. This flight may include one or multiple stops.

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

Flying on Icelandair is currently your cheapest option to Chicago O'Hare Intl Airport, with prices starting at £309. Additional return tickets that might be worth considering are offered by Scandinavian Airlines and TAP AIR PORTUGAL, with the lowest prices starting at £351 and £365, respectively. You may be able to fly from London to Chicago O'Hare Intl Airport for 41% less than the average price by searching for these airlines.

What are the cheapest airlines to fly from London to Chicago O'Hare Intl Airport one-way?

For one-way options, check prices for Delta. According to our data, you can fly for as low as £406. Users have also found prices from £408 and £408 on Austrian Airlines and Brussels Airlines, respectively.

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.

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).

What are the most popular routes from London to Chicago O'Hare Intl Airport?

When deciding which route to take from London to Chicago O'Hare Intl Airport consider London Heathrow - Chicago O'Hare Intl, London Gatwick - Chicago O'Hare Intl or London City - Chicago O'Hare Intl as they are the most popular.

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

The cheapest flight price from London to Chicago O'Hare Intl Airport is £421. On average you can expect to pay £1,443. The most popular route, (London Heathrow - Chicago O'Hare Intl), can usually be booked for £321.

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

Consider Air Canada (75%), Austrian Airlines (75%) or United Airlines (75%) when booking your flight. These represent the most reliable airlines when flying from London to Chicago O'Hare Intl Airport.

What are the most popular airlines that fly from London to Chicago O'Hare Intl Airport?

Before booking your flight from London to Chicago O'Hare Intl Airport check out the most popular airlines for this route: American Airlines, Finnair or British Airways.

What is the cheapest day to fly round-trip from London to Chicago O'Hare Intl Airport?

Departing on a Tuesday is a good option for securing a great price. You can expect to save up to 9% when planning your travel around this day of the week.

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

To save on the cost of your flight from London to Chicago O'Hare Intl Airport, book at least 56 days before your planned departure. Booking around this time can save you about 35% on the cost of this flight compared to booking a flight leaving this week. We have found prices from £489 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as £659.

What is the cheapest month to fly from London to Chicago O'Hare Intl Airport?

February is one of the best times of the year to fly to Chicago O'Hare Intl Airport from London. Prices for February average £510 per person but you can even find prices for as low as £313. The most expensive prices can be found in the month of July. Opting for a February flight can save you 25% on your journey compared to booking in July

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

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

How can I find direct flights from London 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 London to O'Hare Intl.

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

Yes. Cheapflights offers flight deals from London 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.

£395+ Flights from London to Chicago O'Hare Intl Airport

Cheapflights Tip: The best prices from London to Chicago O'Hare Intl are usually found in February or September, booked 70 days in advance, depart on a Wednesday or Tuesday and return on a Thursday

Cheap flight deals from London to O'Hare Intl

Round-trip from	£395
Popular in	July
Cheapest in	February
Average price	£452
Good round-trip deal	£498 or less
Good one-way deal	£495 or less

7/10-15/10
2 total stops
55h 53m total
London to Chicago

Search Deals

Highest demand for flights based on searches. 12% potential increase in price (£55 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (£9 potential savings vs. average return price).

Search Deals

Average for round-trip flights in September 2025

Search Deals

Price to beat on a round-trip flight from London (LON) to Chicago O'Hare Intl.

Search Deals

Price to beat on a one-way flight from London (LON) to Chicago O'Hare Intl.

Search Deals

Find flight deals from London to O'Hare Intl

Cheapest flights from London to O'Hare Intl
Explore the most affordable flight options available from London to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 14 September 2025.

Sat 20/914:30LGW - ORD

1 stop26h 25mAmerican Airlines

Tue 14/1010:11ORD - LGW

1 stop15h 59mAmerican Airlines

Deal found 12/9£395

Fri 3/1007:40LHR - ORD

1 stop14h 05mAmerican Airlines

Tue 7/1014:41ORD - LHR

1 stop11h 24mAmerican Airlines

Deal found 14/9£395

Mon 6/1014:00LGW - ORD

1 stop33h 53mMultiple Airlines

Sun 19/1006:00ORD - LGW

1 stop22h 10mMultiple Airlines

Deal found 12/9£396

Fri 19/906:50LHR - ORD

1 stop11h 15mUnited Airlines

Fri 26/914:39ORD - LHR

1 stop10h 16mUnited Airlines

Deal found 12/9£396

Fri 3/1013:05LGW - ORD

2 stops34h 34mMultiple Airlines

Tue 7/1011:13ORD - LGW

1 stop13h 07mMultiple Airlines

Deal found 14/9£397

Mon 8/1219:50LHR - ORD

2 stops50h 55mScandinavian Airlines

Sat 10/119:20ORD - LHR

1 stop14h 40mScandinavian Airlines

Deal found 14/9£397

Sat 27/914:00LGW - ORD

1 stop34h 50mMultiple Airlines

Sat 11/1018:58ORD - LGW

1 stop33h 12mMultiple Airlines

Deal found 12/9£397

Thu 9/1007:45LHR - ORD

2 stops14h 50mUnited Airlines

Wed 15/1013:55ORD - LHR

1 stop12h 40mUnited Airlines

Deal found 12/9£397

Thu 30/1011:55LGW - ORD

1 stop11h 25mIcelandair

Sun 2/1118:30ORD - LGW

1 stop10h 25mIcelandair

Deal found 13/9£398

Thu 6/1114:10LHR - ORD

Nonstop8h 50mBritish Airways

Wed 12/1118:30ORD - LHR

Nonstop7h 45mBritish Airways

Deal found 12/9£398

Fri 19/914:00LGW - ORD

1 stop32h 12mMultiple Airlines

Thu 2/1012:05ORD - LGW

1 stop15h 55mMultiple Airlines

Deal found 11/9£399

Fri 3/1012:15LHR - ORD

Nonstop8h 35mBritish Airways

Mon 6/1020:40ORD - LHR

Nonstop7h 50mBritish Airways

Deal found 14/9£399

Best flights from London to O'Hare Intl
Discover carefully curated flight deals from London to O'Hare Intl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 14 September 2025.

Sat 4/1009:30LHR - ORD

2 stops19h 45mUnited Airlines

Thu 16/1016:00ORD - LHR

Nonstop8h 20mUnited Airlines

Deal found 13/9£396

Tue 9/1207:05LHR - ORD

2 stops39h 40mScandinavian Airlines

Fri 9/119:20ORD - LHR

1 stop14h 40mScandinavian Airlines

Deal found 14/9£397

Mon 3/1108:30STN - ORD

1 stop11h 30mMultiple Airlines

Fri 7/1119:40ORD - STN

1 stop13h 10mMultiple Airlines

Deal found 12/9£400

Tue 10/311:45LGW - ORD

2 stops34h 48mBritish Airways

Wed 18/318:35ORD - LGW

1 stop31h 55mBritish Airways

Deal found 12/9£403

Tue 28/1007:40LHR - ORD

Nonstop9h 20mAustrian Airlines

Tue 4/1115:45ORD - LHR

Nonstop8h 10mAustrian Airlines

Deal found 13/9£414

Tue 9/1211:55LGW - ORD

1 stop11h 25mIcelandair

Mon 5/118:30ORD - LGW

1 stop10h 25mIcelandair

Deal found 14/9£428

Fri 7/1107:45LCY - ORD

1 stop12h 35mDelta

Fri 28/1116:25ORD - LCY

1 stop9h 45mDelta

Deal found 13/9£451

Sat 4/1008:40LCY - ORD

2 stops18h 54mVirgin Atlantic

Tue 7/1010:25ORD - LCY

2 stops14h 50mVirgin Atlantic

Deal found 14/9£456

Wed 1/1007:45LHR - ORD

2 stops14h 50mUnited Airlines

Tue 21/1013:17ORD - LHR

1 stop11h 58mUnited Airlines

Deal found 13/9£397

Wed 24/908:15STN - ORD

2 stops19h 00mMultiple Airlines

Wed 1/1019:25ORD - STN

2 stops21h 05mMultiple Airlines

Deal found 14/9£400

Thu 30/1006:40LHR - ORD

1 stop17h 05mScandinavian Airlines

Sun 2/1119:20ORD - LHR

2 stops17h 30mScandinavian Airlines

Deal found 12/9£402

Wed 11/311:45LGW - ORD

2 stops34h 48mBritish Airways

Wed 18/318:35ORD - LGW

1 stop31h 55mBritish Airways

Deal found 12/9£403

Direct flights from London to O'Hare Intl
Explore direct flight options from London to O'Hare Intl based on user searches, and compare prices and availability for your desired travel dates. Data last updated 14 September 2025.

Fri 26/911:05LHR - ORD

Nonstop9h 05mLufthansa

Mon 29/916:00ORD - LHR

Nonstop8h 20mLufthansa

Deal found 12/9£396

Wed 29/1010:25LHR - ORD

Nonstop9h 20mLufthansa

Wed 5/1117:50ORD - LHR

Nonstop8h 05mLufthansa

Deal found 14/9£397

Thu 6/1114:10LHR - ORD

Nonstop8h 50mBritish Airways

Wed 12/1118:30ORD - LHR

Nonstop7h 45mBritish Airways

Deal found 12/9£398

Fri 3/1012:15LHR - ORD

Nonstop8h 35mBritish Airways

Mon 6/1020:40ORD - LHR

Nonstop7h 50mBritish Airways

Deal found 14/9£399

Fri 26/911:05LHR - ORD

Nonstop9h 05mBrussels Airlines

Mon 29/921:25ORD - LHR

Nonstop8h 20mBrussels Airlines

Deal found 12/9£400

Wed 24/911:05LHR - ORD

Nonstop9h 05mMultiple Airlines

Sat 4/1016:00ORD - LHR

Nonstop8h 20mMultiple Airlines

Deal found 14/9£400

Sat 8/1111:00LHR - ORD

Nonstop8h 50mBritish Airways

Sat 8/1117:10ORD - LHR

Nonstop7h 45mBritish Airways

Deal found 12/9£403

Tue 7/1008:30LHR - ORD

Nonstop9h 00mAustrian Airlines

Wed 15/1021:25ORD - LHR

Nonstop8h 20mAustrian Airlines

Deal found 12/9£405

Mon 6/1008:30LHR - ORD

Nonstop9h 00mAustrian Airlines

Sun 12/1021:25ORD - LHR

Nonstop8h 20mAustrian Airlines

Deal found 14/9£408

Tue 7/1011:05LHR - ORD

Nonstop9h 05mLufthansa

Wed 15/1016:00ORD - LHR

Nonstop8h 20mLufthansa

Deal found 12/9£408

Last-minute flights from London to O'Hare Intl
Discover last-minute flight deals from London to O'Hare Intl. Data last updated 14 September 2025 and is based on user searches.

Fri 19/906:00LHR - ORD

1 stop15h 55mMultiple Airlines

Mon 29/916:00ORD - LHR

Nonstop8h 20mMultiple Airlines

Deal found 14/9£395

Fri 19/906:50LHR - ORD

1 stop11h 15mUnited Airlines

Fri 26/914:39ORD - LHR

1 stop10h 16mUnited Airlines

Deal found 12/9£396

Fri 19/914:00LGW - ORD

1 stop32h 12mMultiple Airlines

Thu 2/1012:05ORD - LGW

1 stop15h 55mMultiple Airlines

Deal found 11/9£399

Fri 19/911:05LHR - ORD

Nonstop9h 05mBrussels Airlines

Mon 22/916:00ORD - LHR

Nonstop8h 20mBrussels Airlines

Deal found 12/9£400

Sat 20/914:30LGW - ORD

1 stop26h 25mAmerican Airlines

Tue 14/1010:11ORD - LGW

1 stop15h 59mAmerican Airlines

Deal found 12/9£395

Sat 20/906:00LHR - ORD

1 stop12h 55mMultiple Airlines

Wed 24/916:00ORD - LHR

Nonstop8h 20mMultiple Airlines

Deal found 14/9£397

Sat 20/907:45LHR - ORD

2 stops15h 20mUnited Airlines

Sat 27/916:00ORD - LHR

Nonstop8h 20mUnited Airlines

Deal found 12/9£397

Mon 22/912:15LHR - ORD

Nonstop8h 35mBritish Airways

Mon 29/920:40ORD - LHR

Nonstop7h 50mBritish Airways

Deal found 14/9£399

Tue 23/909:15LHR - ORD

Nonstop8h 35mBritish Airways

Sun 5/1022:35ORD - LHR

Nonstop7h 40mBritish Airways

Deal found 12/9£398

Wed 24/908:50LGW - ORD

2 stops15h 25mMultiple Airlines

Wed 1/1019:25ORD - LGW

2 stops16h 25mMultiple Airlines

Deal found 14/9£400

Wed 24/911:05LHR - ORD

Nonstop9h 05mMultiple Airlines

Sat 4/1016:00ORD - LHR

Nonstop8h 20mMultiple Airlines

Deal found 14/9£400

Wed 24/908:15STN - ORD

2 stops19h 00mMultiple Airlines

Wed 1/1019:25ORD - STN

2 stops21h 05mMultiple Airlines

Deal found 14/9£400

One-way flights from London to O'Hare Intl
Search for one-way flight options from London to O'Hare Intl. Find affordable one-way fares based on user searches. Data last updated 14 September 2025.

Thu 1/110:25LGW - ORD

1 stop13h 30mMultiple Airlines

Deal found 13/9£400

Thu 30/1014:00LTN - ORD

1 stop33h 20mMultiple Airlines

Deal found 13/9£400

Fri 19/1205:50LTN - ORD

1 stop18h 05mMultiple Airlines

Deal found 13/9£400

Sun 26/1020:30STN - ORD

2 stops43h 35mMultiple Airlines

Deal found 13/9£400

Fri 13/309:35LHR - ORD

2 stops19h 38mAmerican Airlines

Deal found 12/9£401

Fri 3/1014:10LTN - ORD

2 stops38h 01mMultiple Airlines

Deal found 13/9£401

Sat 11/1006:15STN - ORD

2 stops20h 45mMultiple Airlines

Deal found 13/9£403

Thu 16/1018:45LHR - ORD

1 stop27h 25mTAP AIR PORTUGAL

Deal found 12/9£403

Sun 30/1121:55LTN - ORD

3 stops26h 00mMultiple Airlines

Deal found 12/9£403

Sat 29/1120:25STN - ORD

3 stops43h 36mMultiple Airlines

Deal found 12/9£403

Fri 17/1014:10LHR - ORD

1 stop32h 33mWestJet

Deal found 12/9£404

Sun 21/906:40STN - ORD

3 stops32h 38mMultiple Airlines

Deal found 14/9£404

Cheapflights Fare Finder

Use the filters below to find and compare flights from London to Chicago O'Hare Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Sat 4/10

09:30-23:15

2 stops19h 45m

Chicago O'Hare Intl

Thu 16/10

16:00-06:20

Nonstop8h 20m

£396

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Tue 9/12

07:05-16:45

2 stops39h 40m

Chicago O'Hare Intl

Fri 9/1

19:20-16:00

1 stop14h 40m

£397

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Wed 1/10

07:45-16:35

2 stops14h 50m

Chicago O'Hare Intl

Tue 21/10

13:17-07:15

1 stop11h 58m

£397

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Wed 1/10

07:45-16:35

2 stops14h 50m

Chicago O'Hare Intl

Sun 12/10

14:08-09:35

1 stop13h 27m

£397

LondonChicago

STN - ORD

STNORD

London Stansted

Mon 3/11

08:30-14:00

1 stop11h 30m

Chicago O'Hare Intl

Fri 7/11

19:40-14:50

1 stop13h 10m

£400

LondonChicago

STN - ORD

STNORD

London Stansted

Wed 24/9

08:15-21:15

2 stops19h 00m

Chicago O'Hare Intl

Wed 1/10

19:25-22:30

2 stops21h 05m

£400

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Thu 9/10

14:00-18:46

1 stop34h 46m

Chicago O'Hare Intl

Thu 23/10

18:58-10:00

1 stop33h 02m

£401

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Thu 30/10

06:40-18:45

1 stop17h 05m

Chicago O'Hare Intl

Sun 2/11

19:20-18:50

2 stops17h 30m

£402

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Tue 10/3

11:45-17:33

2 stops34h 48m

Chicago O'Hare Intl

Wed 18/3

18:35-07:30

1 stop31h 55m

£403

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Wed 11/3

11:45-17:33

2 stops34h 48m

Chicago O'Hare Intl

Wed 18/3

18:35-07:30

1 stop31h 55m

£403

Flights are sorted by cheapest return flights first.

Deals found on 13/9

Showing 1-10 of 60 results

...

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

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

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

The best time to book flights from London to Chicago O'Hare Intl Airport is 70 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 to Chicago O'Hare Intl Airport?

Currently, January is the cheapest month in which you can book a flight from London to Chicago O'Hare Intl Airport (average of £595). Flying from London 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 LON to ORD?

It’s typically best to fly out from London to Chicago O'Hare Intl Airport in the evening. Doing so could potentially save you 16% on the flight price compared to flying in the afternoon, which is usually more expensive.

What is the cheapest day to fly from London to Chicago O'Hare Intl Airport?

Travellers seeking maximum savings on their London 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 to Chicago O'Hare Intl Airport

The most flights from LON to ORD are scheduled on a Saturday (54 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (42 on average).

What’s the top stopover airport for flights from London to Chicago O'Hare Intl Airport?

Reykjavik (KEF) – chosen by Cheapflights users on 41% of one-stop itineraries from London to Chicago O'Hare Intl Airport on Cheapflights.

What’s the cheapest stopover airport for flights from London to Chicago O'Hare Intl Airport?

Lisbon (LIS) is the most affordable one-stop option, with an average return flight price of £342.

What’s the fastest stopover option from London to Chicago O'Hare Intl Airport?

Flights via Amsterdam (AMS) have the shortest average one-way travel time for one-stop routes: 10h 50m.

Which airport typically offers the quickest stopover for flights from London to Chicago O'Hare Intl Airport?

Flights via Amsterdam (AMS) offer the fastest connection on this route, with an average stopover time of 0h 55m.

Reviews of airlines servicing O'Hare Intl

Get a feel of what it's like to fly with Finnair, Aer Lingus, andIcelandair from London to Chicago O'Hare Intl Airport by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Finnair

7.6

Good

1,323 reviews

Check prices

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

1,323 reviews

Finnair

7.6

Good

1,323 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2025

FRA - DFW

Aer Lingus

7.2

Good

1,271 reviews

Finnair

7.6

Good

1,323 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2025

FRA - DFW

Icelandair

7.0

Good

546 reviews

Finnair

7.6

Good

1,323 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2025

FRA - DFW

Lufthansa

6.8

Okay

7,409 reviews

Finnair

7.6

Good

1,323 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2025

FRA - DFW

British Airways

6.7

Okay

7,361 reviews

Finnair

7.6

Good

1,323 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2025

FRA - DFW

Related info for your journey

How long is the flight from London to Chicago O'Hare Intl Airport?
United Airlines, Scandinavian Airlines, and British Airways can get you from London to Chicago O'Hare Intl Airport in just under 19h 45m. Your travel time can differ by up to 19h 55m. There are 3939 mi between London and Chicago O'Hare Intl Airport. This flight may include one or multiple stops.
What are the cheapest airlines flying from London to Chicago O'Hare Intl Airport round-trip?
Flying on Icelandair is currently your cheapest option to Chicago O'Hare Intl Airport, with prices starting at £309. Additional return tickets that might be worth considering are offered by Scandinavian Airlines and TAP AIR PORTUGAL, with the lowest prices starting at £351 and £365, respectively. You may be able to fly from London to Chicago O'Hare Intl Airport for 41% less than the average price by searching for these airlines.
What are the cheapest airlines to fly from London to Chicago O'Hare Intl Airport one-way?
For one-way options, check prices for Delta. According to our data, you can fly for as low as £406. Users have also found prices from £408 and £408 on Austrian Airlines and Brussels Airlines, respectively.
What are the most popular routes from London to Chicago O'Hare Intl Airport?
When deciding which route to take from London to Chicago O'Hare Intl Airport consider London Heathrow - Chicago O'Hare Intl, London Gatwick - Chicago O'Hare Intl or London City - Chicago O'Hare Intl as they are the most popular.
What are the most reliable airlines from London to Chicago O'Hare Intl Airport?
Consider Air Canada (75%), Austrian Airlines (75%) or United Airlines (75%) when booking your flight. These represent the most reliable airlines when flying from London to Chicago O'Hare Intl Airport.
What are the cheapest flights from London to Chicago O'Hare Intl Airport?
The cheapest flight price from London to Chicago O'Hare Intl Airport is £421. On average you can expect to pay £1,443. The most popular route, (London Heathrow - Chicago O'Hare Intl), can usually be booked for £321.
Can I find deals for flights from London to O'Hare Intl that include hotel bookings?
Yes. In addition to deals on London to O'Hare Intl flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from London 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 London to O'Hare Intl.
Can I find deals for business class flights from London to O'Hare Intl?
Yes. Cheapflights offers flight deals from London 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 to Chicago O'Hare Intl Airport?
Currently, January is the cheapest month in which you can book a flight from London to Chicago O'Hare Intl Airport (average of £595). Flying from London 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

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Top 10 airlines flying from London to O'Hare Intl

Airline	Cheapest	Average	Flexibility	On-time
Icelandair	Cheapest£309	Average£481	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
Scandinavian Airlines	Cheapest£351	Average£479	FlexibilityNo cancel fee	On-time77%	Search Scandinavian Airlines flights
TAP AIR PORTUGAL	Cheapest£365	Average£608	FlexibilityNo cancel fee	On-timeN/A	Search TAP AIR PORTUGAL flights
Aer Lingus	Cheapest£365	Average£570	FlexibilityNo cancel fee	On-timeN/A	Search Aer Lingus flights
Virgin Atlantic	Cheapest£377	Average£477	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
Brussels Airlines	Cheapest£390	Average£548	FlexibilityNo cancel fee	On-timeN/A	Search Brussels Airlines flights
Lufthansa	Cheapest£393	Average£574	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
Austrian Airlines	Cheapest£397	Average£565	FlexibilityNo cancel fee	On-time78%	Search Austrian Airlines flights
British Airways	Cheapest£403	Average£556	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
United Airlines	Cheapest£405	Average£539	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights

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Cheap flights from London to Chicago O'Hare Intl Airport from £395

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 20/9. Fares are subject to change and may not be available on all flights or dates of travel.

Cheapflights Tip: The best prices from London to Chicago O'Hare Intl are usually found in February or September, booked 70 days in advance, depart on a Wednesday or Tuesday and return on a Thursday

Cheap flight deals from London to O'Hare Intl

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Find flight deals from London to O'Hare Intl

Cheapest flights from London to O'Hare IntlExplore the most affordable flight options available from London to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 14 September 2025.

Explore the most affordable flight options available from London to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 14 September 2025.

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Use the filters below to find and compare flights from London to Chicago O'Hare Intl Airport that are best for you.

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

Have a flexible travel schedule? Discover the best time to fly to O'Hare Intl from London with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from London to Chicago O'Hare Intl Airport

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

Use this chart to determine the optimal time to book a return flight from London to O'Hare Intl. Price data was last updated on 12 September 2025.

What is the cheapest month to book a flight from London to Chicago O'Hare Intl Airport?

What is the cheapest time of day to fly from LON to ORD?

Find hourly flight availability from London 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 14 September 2025.

What is the cheapest day to fly from London to Chicago O'Hare Intl Airport?

Use this chart to determine the cheapest time to fly return from London to O'Hare Intl. Price data was last updated on 16 December 2024.

Weekly flight availability from London to Chicago O'Hare Intl Airport

What’s the top stopover airport for flights from London to Chicago O'Hare Intl Airport?

Share of one-stop return flights from London to Chicago O'Hare Intl Airport chosen by Cheapflights users in the past 12 months, using the same stopover each way.

What’s the cheapest stopover airport for flights from London to Chicago O'Hare Intl Airport?

Average return fare for one-stop flights from London to Chicago O'Hare Intl Airport, chosen by Cheapflights users in the past 12 months, with the same stopover each way.

What’s the fastest stopover option from London to Chicago O'Hare Intl Airport?

Shortest average travel time for one-stop one-way flights from London to Chicago O'Hare Intl Airport, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.

Which airport typically offers the quickest stopover for flights from London to Chicago O'Hare Intl Airport?

Average stopover duration for one-stop one-way flights from London to Chicago O'Hare Intl Airport, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Reviews of airlines servicing O'Hare Intl

Get a feel of what it's like to fly with Finnair, Aer Lingus, andIcelandair from London to Chicago O'Hare Intl Airport by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

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

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

What are the cheapest airlines to fly from London to Chicago O'Hare Intl Airport one-way?

What are the most popular routes from London to Chicago O'Hare Intl Airport?

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

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

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

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

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

What is the cheapest month to book a flight from London to Chicago O'Hare Intl Airport?

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Fly from London to O'Hare Intl on these airlines

Choose from the following airlines for your flight from London to O'Hare Intl. Flights are based on user searches made on Cheapflights and were last updated on 14 September 2025.

Top 10 airlines flying from London to O'Hare Intl

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

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

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

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

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Cheapest flights from London to O'Hare Intl
Explore the most affordable flight options available from London to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 14 September 2025.