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O'Hare Intl

$402+ Cheap flights from London (LON) to O'Hare Intl (ORD)

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 3/19. Fares are subject to change and may not be available on all flights or dates of travel.
LON — ORD
febr. 25 — març 41
dt. 2/25
dt. 3/4
1 adult, Economy
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The best prices from London to Chicago O'Hare Intl are usually found in February or April, booked 68 days in advance, depart on a Thursday or Wednesday and return on a Wednesday

Cheap 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 febrer 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$527
(Lufthansa)

One-way from

$402
(Kiwi.com)

Popular in

August

Cheapest in

February

Average price

$586

Good round-trip deal

$640 or less

Good one-way deal

$646 or less
Provider with most accurate pricing for London (LON)-Chicago O'Hare Intl flight deals.
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Provider most trusted by Cheapflights users for London (LON)-Chicago O'Hare Intl flights.
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From London (LON) to Chicago O'Hare Intl
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One-way flight from London (LON) to Chicago O'Hare Intl
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Highest demand for flights based on searches. 8% potential increase in price ($68 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($14 potential savings vs. average RT price).
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Average for round-trip flights in February 2025
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Price to beat on a round-trip flight from London (LON) to Chicago O'Hare Intl.
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Price to beat on a one-way flight from London (LON) to Chicago O'Hare Intl.
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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 febrer 20, 2025.

This Lufthansa deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dc. 4/236:00 amLHR - ORD
1 stop12h 10mMultiple Airlines
dt. 4/294:05 pmORD - LHR
Nonstop8h 15mMultiple Airlines
Deal found 2/20$527
This United Airlines deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dv. 3/77:40 amLHR - ORD
1 stop12h 30mUnited Airlines
dt. 3/182:16 pmORD - LHR
1 stop10h 39mUnited Airlines
Deal found 2/20$528
This Gotogate deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dt. 2/258:40 pmLHR - ORD
1 stop26h 40mIcelandair
dl. 3/36:30 pmORD - LHR
1 stop19h 00mIcelandair
Deal found 2/20$531
This Kiwi.com deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dj. 3/62:00 pmLGW - ORD
1 stop15h 28mMultiple Airlines
dt. 3/259:01 pmORD - LGW
2 stops30h 04mMultiple Airlines
Deal found 2/20$532
This Mytrip deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dv. 2/216:00 amLHR - ORD
1 stop15h 30mTAP AIR PORTUGAL
dv. 2/288:20 pmORD - LHR
1 stop16h 35mTAP AIR PORTUGAL
Deal found 2/20$534
This Kiwi.com deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dj. 3/66:00 amLHR - ORD
1 stop12h 55mSWISS
dt. 3/188:05 pmORD - LHR
1 stop11h 55mSWISS
Deal found 2/20$536
This TravelUp deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ds. 3/12:10 pmLHR - ORD
Nonstop8h 50mBritish Airways
dt. 3/189:15 pmORD - LHR
Nonstop7h 45mBritish Airways
Deal found 2/20$537
This StudentUniverse deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure StudentUniverse is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dc. 4/2311:05 amLHR - ORD
Nonstop8h 45mFinnair
dt. 4/294:55 pmORD - LHR
Nonstop7h 55mFinnair
Deal found 2/20$542
This ChecknFly deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure ChecknFly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dj. 2/272:30 pmLHR - ORD
1 stop13h 36mLufthansa
dc. 4/29:20 pmORD - LHR
Nonstop8h 25mLufthansa
Deal found 2/20$543
This TAP AIR PORTUGAL deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dj. 2/273:55 pmLGW - ORD
1 stop29h 35mTAP AIR PORTUGAL
dc. 4/26:00 pmORD - LGW
1 stop14h 00mTAP AIR PORTUGAL
Deal found 2/20$545
This SWISS deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dj. 3/66:40 pmLGW - ORD
1 stop27h 35mSWISS
dl. 3/105:55 pmORD - LGW
2 stops18h 55mSWISS
Deal found 2/20$549
This oojo deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dj. 5/151:00 pmLGW - ORD
1 stop11h 15mIcelandair
dj. 5/227:25 pmORD - LGW
1 stop13h 15mIcelandair
Deal found 2/20$550

Find flights from London to O'Hare Intl within your budget

Customize 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 2,558,603 searches. Data last updated febrer 20, 2025.

Fly from

London

Fly to

O'Hare Intl

Route

Depart

Return

Price

LondonChicago

LHR - ORD

LHRORD

London Heathrow

dc. 4/23

6:00 am-12:10 pm

1 stop12h 10m

Chicago O'Hare Intl

dt. 4/29

4:05 pm-6:20 am

Nonstop8h 15m

$527

LondonChicago

LHR - ORD

LHRORD

London Heathrow

dv. 3/7

7:40 am-2:10 pm

1 stop12h 30m

Chicago O'Hare Intl

dc. 3/12

12:48 pm-5:55 am

1 stop12h 07m

$528

LondonChicago

LGW - ORD

LGWORD

London Gatwick

dj. 3/6

2:00 pm-11:28 pm

1 stop15h 28m

Chicago O'Hare Intl

dt. 3/25

9:01 pm-8:05 am

2 stops30h 04m

$532

LondonChicago

LHR - ORD

LHRORD

London Heathrow

ds. 3/8

7:40 am-2:10 pm

1 stop12h 30m

Chicago O'Hare Intl

dc. 3/12

4:15 pm-8:45 am

1 stop11h 30m

$534

LondonChicago

LHR - ORD

LHRORD

London Heathrow

dj. 3/6

6:00 am-12:55 pm

1 stop12h 55m

Chicago O'Hare Intl

dt. 3/18

8:05 pm-1:00 pm

1 stop11h 55m

$536

LondonChicago

LHR - ORD

LHRORD

London Heathrow

dc. 3/12

10:25 am-2:50 pm

Nonstop9h 25m

Chicago O'Hare Intl

dc. 3/26

6:50 pm-7:55 am

Nonstop8h 05m

$537

LondonChicago

LHR - ORD

LHRORD

London Heathrow

dt. 4/15

9:25 pm-9:15 pm

1 stop29h 50m

Chicago O'Hare Intl

dt. 4/29

7:30 pm-11:55 am

1 stop10h 25m

$539

LondonChicago

LHR - ORD

LHRORD

London Heathrow

dj. 3/6

11:55 am-2:45 pm

Nonstop8h 50m

Chicago O'Hare Intl

dl. 3/10

9:15 pm-10:00 am

Nonstop7h 45m

$540

LondonChicago

LHR - ORD

LHRORD

London Heathrow

dc. 4/23

11:05 am-1:50 pm

Nonstop8h 45m

Chicago O'Hare Intl

dt. 4/29

4:55 pm-6:50 am

Nonstop7h 55m

$542

LondonChicago

LGW - ORD

LGWORD

London Gatwick

dj. 3/6

6:40 pm-4:15 pm

1 stop27h 35m

Chicago O'Hare Intl

dl. 3/10

5:55 pm-5:50 pm

2 stops18h 55m

$549

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

Showing 1-10 of 60 results
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Compare providers for flights from London to O'Hare Intl

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from London to O'Hare Intl in February.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy1 starTrust Score*2 stars
AranGrantPrice Accuracy3 starsTrust Score*1 star
MytripPrice Accuracy3 starsTrust Score*3 stars
Trip.comPrice Accuracy1 starTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on London-Chicago O'Hare Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on London-Chicago O'Hare Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from London-Chicago O'Hare Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on London-Chicago O'Hare Intl Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for London-Chicago O'Hare Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 round-trip 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 London to O'Hare Intl

Get recent, data-driven insights about flights from London to O'Hare Intl including ideal travel times, pricing trends, and more.

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 round-trip flight from London to O'Hare Intl. Price data was last updated on February 14, 2025.

The best time to book flights from London to Chicago O'Hare Intl Airport is 68 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, August is the cheapest month in which you can book a flight from London to Chicago O'Hare Intl Airport (average of $245). Flying from London to Chicago O'Hare Intl Airport in March is currently the most expensive (average of $321). 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 febrer 20, 2025.

When flying from London to Chicago O'Hare Intl Airport, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 26% versus a flight in the afternoon.

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 round-trip from London to O'Hare Intl. Price data was last updated on September 1, 2024.

Travelers seeking maximum savings on their London to Chicago O'Hare Intl Airport flight should consider departing on Sunday evenings when fares are most often at their lowest. Friday 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

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 febrer 20, 2025.

The most flights from LON to ORD are scheduled on a Wednesday (38 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (33 on average).

Rainfall in O'Hare Intl by month

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

In terms of precipitation, rainfall in Chicago O'Hare Intl Airport ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Chicago O'Hare Intl Airport when rainfall is around 1.7 in.

Temperature in O'Hare Intl by month

Plan your trip to O'Hare Intl by taking into account the average temperature totals 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 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

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 febrer 20, 2025.
Read reviews from past customers who have flown Delta, KLM and LOT from London to Chicago. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
8,219 reviews

Boarding

8.2

Crew

8.5

Food

7.3

Comfort

8.0

Entertainment

7.9

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta
8.0
Very good
8,219 reviews
Delta
8.0
Very good
8,219 reviews

Boarding

8.2

Crew

8.5

Food

7.3

Comfort

8.0

Entertainment

7.9

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

KLM
7.8
Good
1,333 reviews
Delta
8.0
Very good
8,219 reviews

Boarding

8.2

Crew

8.5

Food

7.3

Comfort

8.0

Entertainment

7.9

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

LOT
7.6
Good
1,080 reviews
Delta
8.0
Very good
8,219 reviews

Boarding

8.2

Crew

8.5

Food

7.3

Comfort

8.0

Entertainment

7.9

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Finnair
7.6
Good
1,274 reviews
Delta
8.0
Very good
8,219 reviews

Boarding

8.2

Crew

8.5

Food

7.3

Comfort

8.0

Entertainment

7.9

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Austrian Airlines
7.6
Good
773 reviews
Delta
8.0
Very good
8,219 reviews

Boarding

8.2

Crew

8.5

Food

7.3

Comfort

8.0

Entertainment

7.9

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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?

    Cheapflights users have booked flights from London to Chicago O'Hare Intl Airport round-trip from $528. Other airlines that can offer you cheap pricing are Lufthansa, from $534, and SWISS, from $536. Users have found that United Airlines is 27% cheaper than the other options available to this destination.

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

    One-way options have recently been found by users for as low as $450 on WestJet. Other airlines that offer cheap prices include Icelandair from $504 and Aer Lingus from $516 one-way.

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

    While some choose either London Gatwick - Chicago O'Hare Intl or London City - Chicago O'Hare Intl, London Heathrow - Chicago O'Hare Intl is the most popular route from London to Chicago O'Hare Intl Airport.

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

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from London to Chicago O'Hare Intl Airport on time: Air Canada (91%), Austrian Airlines (91%), United Airlines (91%).

  • 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 $547. On average you can expect to pay $1,316. 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 vacation 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, August is the cheapest month in which you can book a flight from London to Chicago O'Hare Intl Airport (average of $245). Flying from London to Chicago O'Hare Intl Airport in March is currently the most expensive (average of $321). 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.

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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 2,558,603 searches. Data last updated febrer 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$390Average$582FlexibilityNo cancel feeOn-time76%
Scandinavian AirlinesCheapest$462Average$666FlexibilityNo cancel feeOn-time77%
TAP AIR PORTUGALCheapest$483Average$729FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$556Average$782FlexibilityNo cancel feeOn-time71%
Aer LingusCheapest$576Average$736FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$579Average$963FlexibilityNo cancel feeOn-time69%
IberiaCheapest$582Average$793FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$589Average$797FlexibilityNo cancel feeOn-time70%
FinnairCheapest$607Average$866FlexibilityNo cancel feeOn-time76%
LufthansaCheapest$660Average$1,067FlexibilityNo cancel feeOn-time76%
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