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Cheap flights from London to Chicago O'Hare Intl Airport from £436

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 22/7. Fares are subject to change and may not be available on all flights or dates of travel.
LON — ORD
16 Jul — 23 Jul1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from London to Chicago O'Hare Intl are usually found in September or October, booked 82 days in advance, depart on a Wednesday or Thursday and return on a Sunday

Cheap flight deals from London to O'Hare Intl

Enter your travel dates to find the best prices.

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 16 June 2026.

Sun 5/715:40
LGW
-
ORD
1 stop32h 35m
Icelandair
Sat 11/719:25
ORD
-
LGW
1 stop10h 20m
Icelandair
Deal found 14/6£564
Wed 8/721:25
LHR
-
ORD
1 stop26h 50m
Icelandair
Sun 19/722:25
ORD
-
LHR
1 stop15h 55m
Icelandair
Deal found 13/6£564
Tue 1/915:15
LTN
-
ORD
2 stops33h 00m
Multiple Airlines
Sat 5/922:25
ORD
-
LTN
2 stops16h 35m
Multiple Airlines
Deal found 14/6£564
Wed 23/921:30
STN
-
ORD
2 stops29h 50m
Multiple Airlines
Sun 27/922:25
ORD
-
STN
2 stops19h 15m
Multiple Airlines
Deal found 16/6£564
Wed 16/908:30
LHR
-
ORD
2 stops17h 42m
Air Canada
Wed 23/913:55
ORD
-
LHR
1 stop12h 40m
Air Canada
Deal found 12/6£565
Tue 21/709:40
LTN
-
ORD
2 stops18h 25m
Multiple Airlines
Mon 21/919:25
ORD
-
LTN
2 stops15h 45m
Multiple Airlines
Deal found 16/6£565
Sat 12/921:30
LGW
-
ORD
2 stops30h 05m
Multiple Airlines
Thu 17/919:25
ORD
-
LGW
1 stop13h 15m
Multiple Airlines
Deal found 12/6£566
Thu 10/1209:15
LCY
-
ORD
1 stop13h 05m
Multiple Airlines
Tue 15/1222:35
ORD
-
LCY
1 stop13h 05m
Multiple Airlines
Deal found 14/6£566
Wed 7/1007:05
LHR
-
ORD
2 stops15h 05m
Scandinavian Airlines
Wed 21/1019:15
ORD
-
LHR
2 stops17h 35m
Scandinavian Airlines
Deal found 12/6£566
Tue 1/917:45
LTN
-
ORD
2 stops24h 50m
Multiple Airlines
Fri 11/915:35
ORD
-
LTN
2 stops20h 30m
Multiple Airlines
Deal found 12/6£566
Sun 6/914:00
LGW
-
ORD
1 stop15h 14m
Multiple Airlines
Thu 17/919:25
ORD
-
LGW
1 stop13h 15m
Multiple Airlines
Deal found 15/6£567
Wed 7/1009:30
LHR
-
ORD
2 stops15h 00m
Air Canada
Wed 21/1010:40
ORD
-
LHR
1 stop15h 55m
Air Canada
Deal found 16/6£567

Find flight deals from London to O'Hare Intl

Discover tips and strategies to find the most affordable flight options for your journey from London (LON) to O'Hare Intl (ORD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 16 June 2026.

Round-trip from

£564

One-way from

£440

Popular in

July

Cheapest in

September

Average price

£728

Good round-trip deal

£678 or less

Good one-way deal

£521 or less
Icelandair
  • Icelandair
  • 5/7-11/7
  • 2 total stops
  • 42h 55m total
  • London to Chicago
Search Deals
3/8
  • 3/8
  • 3 total stops
  • 41h 51m total
  • London to Chicago
Search Deals
Highest demand for flights based on searches. 16% potential increase in price (£87 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£12 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 2026
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

Cheapflights Fare Finder

 
Customise your flight search to find flights from London to O'Hare Intl that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 16 June 2026.
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

Cheapest return flight

LondonChicago

LTN - ORD

LTNORD

London Luton

Wed 9/9

06:15-14:00

1 stop13h 45m

Chicago O'Hare Intl

Thu 17/9

21:00-16:45

1 stop13h 45m

£565

LondonChicago

LTN - ORD

LTNORD

London Luton

Sat 7/11

12:15-15:30

2 stops33h 15m

Chicago O'Hare Intl

Mon 7/12

18:30-16:55

2 stops16h 25m

£576

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Mon 7/9

18:10-17:50

1 stop29h 40m

Chicago O'Hare Intl

Sat 19/9

17:00-06:50

Nonstop7h 50m

£580

LondonChicago

LTN - ORD

LTNORD

London Luton

Wed 8/7

06:15-21:25

2 stops21h 10m

Chicago O'Hare Intl

Tue 21/7

19:25-22:10

2 stops20h 45m

£584

LondonChicago

LTN - ORD

LTNORD

London Luton

Wed 16/9

08:25-19:50

1 stop17h 25m

Chicago O'Hare Intl

Mon 21/9

21:50-19:05

1 stop15h 15m

£606

LondonChicago

LTN - ORD

LTNORD

London Luton

Wed 16/9

08:25-19:50

1 stop17h 25m

Chicago O'Hare Intl

Tue 22/9

21:50-19:05

1 stop15h 15m

£608

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Sun 20/9

14:05-20:12

1 stop12h 07m

Chicago O'Hare Intl

Tue 13/10

16:25-06:45

Nonstop8h 20m

£610

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Thu 27/8

07:40-14:00

1 stop12h 20m

Chicago O'Hare Intl

Sat 5/9

19:05-09:05

Nonstop8h 00m

£614

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Sat 26/9

06:40-20:40

2 stops20h 00m

Chicago O'Hare Intl

Mon 5/10

19:15-16:25

2 stops15h 10m

£618

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Thu 9/7

06:55-18:15

1 stop17h 20m

Chicago O'Hare Intl

Thu 16/7

16:30-06:45

Nonstop8h 15m

£622

Flights are sorted by cheapest return flights first.

Deals found on 13/6

Showing 1-10 of 60 resultsSorted by cheapest first
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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.
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

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

Currently, March is the cheapest month in which you can book a flight from London to Chicago O'Hare Intl Airport (average of £58). Flying from London to Chicago O'Hare Intl Airport in September is currently the most expensive (average of £2,184). 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?

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 16 June 2026.

When flying from London to Chicago O'Hare Intl Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 16 June 2026.

The most flights from LON to ORD are scheduled on a Monday (52 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (46 on average).

How much does it cost for a return flight 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.

Reykjavik (KEF) – chosen by Cheapflights users on 50% 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?

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.

Zurich (ZRH) is the most affordable one-stop option, with an average return flight price of £359.

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.

Flights via Amsterdam (AMS) have the shortest average one-way travel time for one-stop routes: 11h 00m.

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.

Flights via Amsterdam (AMS) offer the fastest connection on this route, with an average stopover time of 1h 16m.

How often are flights from London to Chicago delayed?

About 11% of weekly flights between London and Chicago have experienced delays in the past year, with the average delay time being 179 minutes.

What is the most punctual flight time for London to Chicago flights?

Historically, flights departing at night are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Wednesday tends to have the lowest number of delays on this route, whereas Tuesday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on London to Chicago flights?

Over the past year, United Airlines have had the lowest number of delays on this route, with just 6% of flights being delayed.

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 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.

Reviews of airlines servicing O'Hare Intl

Get insights into the airlines that provide service to O'Hare Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to O'Hare Intl. Reviews last updated 16 June 2026.
Get a feel of what it's like to fly with United Airlines,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.
United Airlines
7.4
Good
9,843 reviews
Check prices

Crew

8.1

Entertainment

7.1

Overall

7.4

Boarding

7.7

Food

6.6

Comfort

7.3

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
United Airlines
7.4
Good
9,843 reviews
United Airlines
7.4
Good
9,843 reviews
Check prices

Crew

8.1

Entertainment

7.1

Overall

7.4

Boarding

7.7

Food

6.6

Comfort

7.3

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
Aer Lingus
7.3
Good
1,604 reviews
United Airlines
7.4
Good
9,843 reviews
Check prices

Crew

8.1

Entertainment

7.1

Overall

7.4

Boarding

7.7

Food

6.6

Comfort

7.3

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
Icelandair
7.0
Good
678 reviews
United Airlines
7.4
Good
9,843 reviews
Check prices

Crew

8.1

Entertainment

7.1

Overall

7.4

Boarding

7.7

Food

6.6

Comfort

7.3

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
Lufthansa
6.8
Okay
8,066 reviews
United Airlines
7.4
Good
9,843 reviews
Check prices

Crew

8.1

Entertainment

7.1

Overall

7.4

Boarding

7.7

Food

6.6

Comfort

7.3

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
British Airways
6.7
Okay
8,054 reviews
United Airlines
7.4
Good
9,843 reviews
Check prices

Crew

8.1

Entertainment

7.1

Overall

7.4

Boarding

7.7

Food

6.6

Comfort

7.3

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.

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?

    Finnair, United Airlines, and British Airways can get you from London to Chicago O'Hare Intl Airport in just under 12h 07m. Your travel time can differ by up to 17h 33m. 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 Virgin Atlantic is currently your cheapest option to Chicago O'Hare Intl Airport, with prices starting at £302. Additional return tickets that might be worth considering are offered by Icelandair and Aer Lingus, with the lowest prices starting at £349 and £364, respectively. You may be able to fly from London to Chicago O'Hare Intl Airport for 48% 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 JetBlue. According to our data, you can fly for as low as £311. Users have also found prices from £325 and £340 on Icelandair and TAP AIR PORTUGAL, 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 (91%), Austrian Airlines (91%) or United Airlines (91%) 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 £430. On average you can expect to pay £1,069. The most popular route, (London Heathrow - Chicago O'Hare Intl), can usually be booked for £442.

  • 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, March is the cheapest month in which you can book a flight from London to Chicago O'Hare Intl Airport (average of £58). Flying from London to Chicago O'Hare Intl Airport in September is currently the most expensive (average of £2,184). 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 Chicago O'Hare Intl Airport?

Book flights to Chicago O'Hare Intl Airport if you plan to visit one of these locations
Elk Grove Village

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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 16 June 2026.
British Airways flights from London to Chicago O'Hare Intl
Lufthansa flights from London to Chicago O'Hare Intl
Finnair flights from London to Chicago O'Hare Intl

Top 10 airlines flying from London to O'Hare Intl

Discover the top 10 airlines that operate flights from London to O'Hare Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 16 June 2026.
AirlineCheapestAverageFlexibilityOn-time
Virgin AtlanticCheapest£302Average£530FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
IcelandairCheapest£349Average£494FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Aer LingusCheapest£364Average£655FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
Scandinavian AirlinesCheapest£375Average£526FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
TAP AIR PORTUGALCheapest£387Average£530FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
Brussels AirlinesCheapest£395Average£615FlexibilityNo cancel feeOn-timeN/A
Search Brussels Airlines flights
British AirwaysCheapest£409Average£641FlexibilityNo cancel feeOn-time70%
Search British Airways flights
LufthansaCheapest£413Average£627FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
FinnairCheapest£428Average£680FlexibilityNo cancel feeOn-time76%
Search Finnair flights
United AirlinesCheapest£430Average£661FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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

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.

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

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.

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

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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