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

Flying on Lufthansa is currently your cheapest option to Chicago O'Hare Intl Airport, with prices starting at £411. Additional return tickets that might be worth considering are offered by Delta and KLM, with the lowest prices starting at £411 and £413, respectively. You may be able to fly from London to Chicago O'Hare Intl Airport for 24% 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 Aer Lingus. According to our data, you can fly for as low as £381. Users have also found prices from £386 and £400 on TAP AIR PORTUGAL and Scandinavian 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 cheapest flights from London to Chicago O'Hare Intl Airport?

The cheapest flight price from London to Chicago O'Hare Intl Airport is £373. On average you can expect to pay £1,784. The most popular route, (London Heathrow - Chicago O'Hare Intl), can usually be booked for £325.

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

Consider Air Canada (92%), Austrian Airlines (92%) or United Airlines (92%) 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, Air Canada or Finnair.

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 10% 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 45 days before your planned departure. Booking around this time can save you about 25% on the cost of this flight compared to booking a flight leaving this week. We have found prices from £520 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as £612.

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 £520 per person but you can even find prices for as low as £316. The most expensive prices can be found in the month of August. Opting for a February flight can save you 27% on your journey compared to booking in August

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.

£381+ 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 March, booked 83 days in advance, depart on a Wednesday or Tuesday and return on a Wednesday

Cheap flight deals from London to O'Hare Intl

Round-trip from	£411
One-way from	£381
Popular in	August
Cheapest in	February
Average price	£563
Good round-trip deal	£472 or less
Good one-way deal	£449 or less

Lufthansa
15/9-22/9
2 total stops
26h 15m total
London to Chicago

Search Deals

22/11
2 total stops
30h 25m total
London to Chicago

Search Deals

Highest demand for flights based on searches. 12% potential increase in price (£54 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (£10 potential savings vs. average return price).

Search Deals

Average for round-trip flights in June 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 13 June 2025.

Mon 15/912:50LTN - ORD

2 stops33h 20mMultiple Airlines

Mon 22/919:15ORD - LTN

2 stops20h 10mMultiple Airlines

Deal found 10/6£411

Mon 15/916:10STN - ORD

2 stops30h 00mMultiple Airlines

Mon 22/919:15ORD - STN

2 stops20h 55mMultiple Airlines

Deal found 10/6£411

Thu 4/913:05LGW - ORD

1 stop16h 05mMultiple Airlines

Thu 11/920:12ORD - LGW

1 stop28h 08mMultiple Airlines

Deal found 10/6£412

Wed 10/913:30LHR - ORD

1 stop12h 25mLufthansa

Sat 20/922:30ORD - LHR

1 stop13h 10mLufthansa

Deal found 12/6£412

Mon 8/906:30LHR - ORD

1 stop14h 10mKLM

Wed 17/913:16ORD - LHR

1 stop11h 29mKLM

Deal found 10/6£413

Wed 10/908:40LHR - ORD

2 stops17h 43mDelta

Wed 1/1010:10ORD - LHR

1 stop14h 35mDelta

Deal found 11/6£414

Wed 27/809:30LHR - ORD

1 stop14h 20mFinnair

Wed 10/922:35ORD - LHR

Nonstop7h 40mFinnair

Deal found 11/6£414

Thu 30/1006:40LHR - ORD

1 stop16h 05mScandinavian Airlines

Sun 2/1119:20ORD - LHR

1 stop14h 40mScandinavian Airlines

Deal found 11/6£416

Thu 25/918:45LHR - ORD

1 stop27h 45mTAP AIR PORTUGAL

Sat 4/1018:15ORD - LHR

1 stop34h 05mTAP AIR PORTUGAL

Deal found 11/6£417

Tue 23/908:40LHR - ORD

1 stop11h 30mVirgin Atlantic

Fri 3/1018:10ORD - LHR

1 stop11h 15mVirgin Atlantic

Deal found 11/6£420

Thu 4/909:50LHR - ORD

1 stop11h 55mBritish Airways

Thu 11/917:00ORD - LHR

Nonstop7h 55mBritish Airways

Deal found 10/6£421

Tue 2/909:20LCY - ORD

1 stop10h 50mVirgin Atlantic

Mon 15/916:50ORD - LCY

1 stop10h 00mVirgin Atlantic

Deal found 12/6£422

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 13 June 2025.

Mon 15/908:45LCY - ORD

1 stop12h 10mLufthansa

Mon 22/922:30ORD - LCY

1 stop14h 05mLufthansa

Deal found 13/6£411

Tue 9/906:30LHR - ORD

1 stop13h 40mDelta

Thu 18/910:10ORD - LHR

1 stop14h 35mDelta

Deal found 12/6£411

Mon 15/916:10STN - ORD

2 stops30h 00mMultiple Airlines

Mon 22/919:15ORD - STN

2 stops20h 55mMultiple Airlines

Deal found 10/6£411

Mon 8/906:30LHR - ORD

1 stop14h 10mKLM

Wed 17/913:16ORD - LHR

1 stop11h 29mKLM

Deal found 10/6£413

Wed 27/809:30LHR - ORD

1 stop14h 20mFinnair

Wed 10/922:35ORD - LHR

Nonstop7h 40mFinnair

Deal found 11/6£414

Sat 27/912:05LHR - ORD

1 stop11h 28mAir Canada

Tue 9/1216:40ORD - LHR

1 stop12h 40mAir Canada

Deal found 12/6£416

Thu 25/918:45LHR - ORD

1 stop27h 45mTAP AIR PORTUGAL

Sat 4/1018:15ORD - LHR

1 stop34h 05mTAP AIR PORTUGAL

Deal found 11/6£417

Tue 23/908:40LHR - ORD

1 stop11h 30mVirgin Atlantic

Fri 3/1018:10ORD - LHR

1 stop11h 15mVirgin Atlantic

Deal found 11/6£420

Thu 4/909:50LHR - ORD

1 stop11h 55mBritish Airways

Thu 11/917:00ORD - LHR

Nonstop7h 55mBritish Airways

Deal found 10/6£421

Fri 3/1019:50LHR - ORD

2 stops26h 20mScandinavian Airlines

Mon 20/1019:15ORD - LHR

2 stops15h 10mScandinavian Airlines

Deal found 12/6£422

Tue 26/806:10LHR - ORD

1 stop18h 40mAmerican Airlines

Tue 2/913:20ORD - LHR

1 stop14h 30mAmerican Airlines

Deal found 12/6£425

Mon 15/915:40LGW - ORD

1 stop32h 35mIcelandair

Mon 22/919:25ORD - LGW

1 stop13h 10mIcelandair

Deal found 10/6£428

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 13 June 2025.

Wed 19/1114:10LHR - ORD

Nonstop8h 50mFinnair

Mon 24/1120:45ORD - LHR

Nonstop7h 40mFinnair

Deal found 12/6£414

Tue 23/913:10LHR - ORD

Nonstop8h 45mBritish Airways

Thu 2/1017:45ORD - LHR

Nonstop7h 35mBritish Airways

Deal found 11/6£419

Mon 17/1112:35LHR - ORD

Nonstop8h 50mMultiple Airlines

Sun 30/1120:45ORD - LHR

Nonstop7h 40mMultiple Airlines

Deal found 12/6£439

Mon 25/813:10LHR - ORD

Nonstop8h 45mAmerican Airlines

Thu 4/921:15ORD - LHR

Nonstop7h 40mAmerican Airlines

Deal found 12/6£470

Fri 5/908:30LHR - ORD

Nonstop9h 00mLufthansa

Mon 15/916:00ORD - LHR

Nonstop8h 20mLufthansa

Deal found 12/6£476

Tue 24/609:15LHR - ORD

Nonstop8h 40mIberia

Mon 30/620:30ORD - LHR

Nonstop8h 00mIberia

Deal found 11/6£520

Mon 1/1207:40LHR - ORD

Nonstop9h 20mAustrian Airlines

Sun 11/117:50ORD - LHR

Nonstop8h 05mAustrian Airlines

Deal found 11/6£570

Last-minute flights from London to O'Hare Intl
Discover last-minute flight deals from London to O'Hare Intl. Data last updated 13 June 2025 and is based on user searches.

Sat 14/608:45LHR - ORD

1 stop13h 10mUnited Airlines

Sat 14/620:25ORD - LHR

1 stop28h 10mUnited Airlines

Deal found 12/6£473

Wed 18/608:40LHR - ORD

1 stop11h 30mVirgin Atlantic

Wed 25/613:45ORD - LHR

1 stop15h 25mVirgin Atlantic

Deal found 11/6£436

Wed 18/614:25LHR - ORD

Nonstop8h 35mAmerican Airlines

Wed 25/620:30ORD - LHR

Nonstop8h 00mAmerican Airlines

Deal found 11/6£454

Wed 18/612:15LHR - ORD

Nonstop8h 30mBritish Airways

Thu 26/617:45ORD - LHR

Nonstop7h 35mBritish Airways

Deal found 11/6£456

Wed 18/606:30LHR - ORD

2 stops15h 48mDelta

Wed 25/609:49ORD - LHR

1 stop19h 21mDelta

Deal found 11/6£460

Thu 19/610:00LGW - ORD

1 stop17h 56mMultiple Airlines

Wed 2/713:43ORD - LGW

1 stop35h 17mMultiple Airlines

Deal found 12/6£457

Thu 19/609:15LHR - ORD

Nonstop8h 40mMultiple Airlines

Wed 2/714:50ORD - LHR

1 stop11h 05mMultiple Airlines

Deal found 11/6£481

Thu 19/608:40LCY - ORD

1 stop11h 30mVirgin Atlantic

Wed 2/716:50ORD - LCY

1 stop18h 30mVirgin Atlantic

Deal found 12/6£483

Thu 19/609:15LHR - ORD

Nonstop8h 40mFinnair

Wed 2/722:30ORD - LHR

Nonstop7h 45mFinnair

Deal found 11/6£497

Thu 19/607:45LCY - ORD

1 stop12h 25mKLM

Wed 2/716:50ORD - LCY

1 stop10h 40mKLM

Deal found 11/6£500

Fri 20/614:30LGW - ORD

1 stop23h 50mAmerican Airlines

Thu 3/713:26ORD - LGW

2 stops12h 44mAmerican Airlines

Deal found 11/6£492

Fri 20/607:45LCY - ORD

1 stop12h 25mMultiple Airlines

Thu 3/716:20ORD - LCY

1 stop19h 00mMultiple Airlines

Deal found 13/6£506

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 13 June 2025.

Sat 22/1114:35LGW - ORD

2 stops30h 25mMultiple Airlines

Deal found 10/6£381

Mon 1/908:50LHR - ORD

1 stop11h 10mAer Lingus

Deal found 11/6£381

Wed 18/616:05LTN - ORD

3 stops44h 32mMultiple Airlines

Deal found 11/6£381

Tue 1/722:05STN - ORD

3 stops38h 32mMultiple Airlines

Deal found 12/6£382

Sun 24/815:05LHR - ORD

2 stops34h 12mMultiple Airlines

Deal found 11/6£383

Sat 13/919:50LHR - ORD

1 stop26h 20mTAP AIR PORTUGAL

Deal found 11/6£386

Fri 5/1206:40LHR - ORD

1 stop16h 05mScandinavian Airlines

Deal found 11/6£400

Thu 19/620:35SEN - ORD

3 stops40h 02mMultiple Airlines

Deal found 11/6£402

Wed 25/616:25LGW - ORD

1 stop29h 45mTAP AIR PORTUGAL

Deal found 12/6£414

Wed 20/813:10LHR - ORD

Nonstop8h 45mBritish Airways

Deal found 12/6£414

Mon 25/810:20LHR - ORD

1 stop13h 30mFinnair

Deal found 12/6£423

Wed 20/809:05LCY - ORD

1 stop12h 40mBritish Airways

Deal found 12/6£442

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

LTN - ORD

LTNORD

London Luton

Mon 15/9

12:50-16:10

2 stops33h 20m

Chicago O'Hare Intl

Mon 22/9

19:15-21:25

2 stops20h 10m

£411

LondonChicago

STN - ORD

STNORD

London Stansted

Mon 15/9

16:10-16:10

2 stops30h 00m

Chicago O'Hare Intl

Mon 22/9

19:15-22:10

2 stops20h 55m

£411

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Wed 10/9

13:30-19:55

1 stop12h 25m

Chicago O'Hare Intl

Sat 20/9

22:30-17:40

1 stop13h 10m

£412

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Thu 4/9

13:05-23:10

1 stop16h 05m

Chicago O'Hare Intl

Thu 11/9

20:12-06:20

1 stop28h 08m

£412

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Mon 8/9

06:30-14:40

1 stop14h 10m

Chicago O'Hare Intl

Wed 17/9

13:16-06:45

1 stop11h 29m

£413

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Wed 10/9

06:30-15:00

2 stops14h 30m

Chicago O'Hare Intl

Wed 17/9

09:30-06:45

1 stop15h 15m

£414

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Wed 27/8

09:30-17:50

1 stop14h 20m

Chicago O'Hare Intl

Wed 10/9

22:35-12:15

Nonstop7h 40m

£414

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Thu 30/10

06:40-17:45

1 stop16h 05m

Chicago O'Hare Intl

Sun 2/11

19:20-16:00

1 stop14h 40m

£416

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Thu 25/9

18:45-16:30

1 stop27h 45m

Chicago O'Hare Intl

Sat 4/10

18:15-10:20

1 stop34h 05m

£417

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Tue 23/9

08:40-14:10

1 stop11h 30m

Chicago O'Hare Intl

Fri 3/10

18:10-11:25

1 stop11h 15m

£420

Flights are sorted by cheapest return flights first.

Deals found on 10/6

Showing 1-10 of 56 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 83 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 Monday (53 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (48 on average).

Rainfall in O'Hare Intl 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

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 a feel of what it's like to fly with Delta, KLM and LOT from London to Chicago 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

7,950 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Delta

8.0

Very Good

7,950 reviews

Delta

8.0

Very Good

7,950 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

KLM

7.8

Good

1,358 reviews

Delta

8.0

Very Good

7,950 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

LOT

7.6

Good

1,079 reviews

Delta

8.0

Very Good

7,950 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Austrian Airlines

7.6

Good

802 reviews

Delta

8.0

Very Good

7,950 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Finnair

7.6

Good

1,290 reviews

Delta

8.0

Very Good

7,950 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

What are the cheapest airlines flying from London to Chicago O'Hare Intl Airport round-trip?
Flying on Lufthansa is currently your cheapest option to Chicago O'Hare Intl Airport, with prices starting at £411. Additional return tickets that might be worth considering are offered by Delta and KLM, with the lowest prices starting at £411 and £413, respectively. You may be able to fly from London to Chicago O'Hare Intl Airport for 24% 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 Aer Lingus. According to our data, you can fly for as low as £381. Users have also found prices from £386 and £400 on TAP AIR PORTUGAL and Scandinavian 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 (92%), Austrian Airlines (92%) or United Airlines (92%) 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 £373. On average you can expect to pay £1,784. The most popular route, (London Heathrow - Chicago O'Hare Intl), can usually be booked for £325.
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

Downers Grove

Schaumburg

Elk Grove Village

Beloit

Rosemont

Browse thousands of different options on Cheapflights for your next trip

Top 10 airlines flying from London to O'Hare Intl

Airline	Cheapest	Average	Flexibility	On-time
Icelandair	Cheapest£310	Average£484	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
Scandinavian Airlines	Cheapest£350	Average£496	FlexibilityNo cancel fee	On-time77%	Search Scandinavian Airlines flights
TAP AIR PORTUGAL	Cheapest£363	Average£599	FlexibilityNo cancel fee	On-timeN/A	Search TAP AIR PORTUGAL flights
Virgin Atlantic	Cheapest£381	Average£528	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
Brussels Airlines	Cheapest£389	Average£629	FlexibilityNo cancel fee	On-timeN/A	Search Brussels Airlines flights
Austrian Airlines	Cheapest£397	Average£560	FlexibilityNo cancel fee	On-time78%	Search Austrian Airlines flights
Lufthansa	Cheapest£397	Average£569	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
United Airlines	Cheapest£398	Average£566	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
American Airlines	Cheapest£400	Average£620	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights
British Airways	Cheapest£404	Average£563	FlexibilityNo cancel fee	On-time70%	Search British Airways flights

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Cheapflights helps you search for flights from London to O'Hare Intl via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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

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

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

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Yes! Start tracking prices for London to O'Hare Intl 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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Cheap flights from London to Chicago O'Hare Intl Airport from £381

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 22/11. 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 March, booked 83 days in advance, depart on a Wednesday or Tuesday and return on a Wednesday

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 13 June 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 13 June 2025.

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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 9 June 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 13 June 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

Explore weekly flight availability from London 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 13 June 2025.

Rainfall in O'Hare Intl by month

Plan your trip to O'Hare Intl by taking into account the average rainfall totals by month.

Temperature in O'Hare Intl by month

Plan your trip to O'Hare Intl by taking into account the average temperature totals by month.

Reviews of airlines servicing O'Hare Intl

Get a feel of what it's like to fly with Delta, KLM and LOT from London to Chicago 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.

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 13 June 2025.

Top 10 airlines flying from London to O'Hare Intl

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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 13 June 2025.