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Cheap flights from Chicago O'Hare Intl Airport to London from £199

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 15/7. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — LON
20 Apr — 27 Apr1
1 adult

Cheapflights Tip: The best prices from Chicago O'Hare Intl to London are usually found in April or February, booked 48 days in advance, depart on a Wednesday or Tuesday and return on a Wednesday

Cheap flight deals from O'Hare Intl to London

Discover tips and strategies to find the most affordable flight options for your journey from O'Hare Intl (ORD) to London (LON). 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 15 April 2025.

Round-trip from

£453

One-way from

£199

Popular in

June

Cheapest in

April

Average price

£495

Good round-trip deal

£515 or less

Good one-way deal

£311 or less
SWISS
  • SWISS
  • 29/4-8/5
  • 2 total stops
  • 24h 50m total
  • Chicago to London
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15/7
  • 15/7
  • 2 total stops
  • 20h 00m total
  • Chicago to London
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Highest demand for flights based on searches. 15% potential increase in price (£81 potential increase over avg. return price).
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Cheapest flight prices on average. 3% potential price decrease (£14 potential savings vs. average return price).
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Average for round-trip flights in April 2025
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Price to beat on a round-trip flight from Chicago O'Hare Intl to London (LON).
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Price to beat on a one-way flight from Chicago O'Hare Intl to London (LON).
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Find flight deals from O'Hare Intl to London

Cheapest flights from O'Hare Intl to London
Explore the most affordable flight options available from O'Hare Intl to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 15 April 2025.

Tue 29/416:00ORD - LHR
1 stop11h 35mMultiple Airlines
Thu 8/508:40LHR - ORD
1 stop13h 15mMultiple Airlines
Deal found 14/4£453
Wed 14/519:25ORD - LGW
1 stop13h 15mIcelandair
Tue 20/513:00LGW - ORD
1 stop14h 15mIcelandair
Deal found 14/4£453
Sun 28/919:15ORD - LHR
1 stop14h 45mScandinavian Airlines
Tue 14/1010:20LHR - ORD
1 stop11h 50mScandinavian Airlines
Deal found 14/4£454
Wed 7/522:15ORD - LGW
1 stop10h 25mMultiple Airlines
Tue 13/510:00LGW - ORD
1 stop37h 41mMultiple Airlines
Deal found 13/4£454
Sun 27/421:15ORD - LHR
Nonstop7h 45mIberia
Tue 6/511:05LHR - ORD
Nonstop8h 45mIberia
Deal found 14/4£454
Sun 27/411:52ORD - LGW
1 stop16h 48mAmerican Airlines
Tue 6/515:05LGW - ORD
1 stop26h 04mAmerican Airlines
Deal found 14/4£454
Sun 4/521:20ORD - LHR
Nonstop8h 25mUnited Airlines
Mon 12/508:40LHR - ORD
1 stop33h 30mUnited Airlines
Deal found 14/4£459
Sun 27/414:20ORD - LHR
1 stop11h 35mSWISS
Tue 6/520:05LHR - ORD
1 stop25h 50mSWISS
Deal found 14/4£461
Tue 6/509:35ORD - STN
2 stops31h 20mMultiple Airlines
Thu 15/506:55STN - ORD
2 stops33h 59mMultiple Airlines
Deal found 14/4£463
Tue 30/919:25ORD - LHR
1 stop10h 30mIcelandair
Sun 5/1013:05LHR - ORD
1 stop11h 10mIcelandair
Deal found 14/4£464
Sun 27/422:20ORD - LHR
Nonstop7h 55mFinnair
Tue 6/511:05LHR - ORD
Nonstop8h 45mFinnair
Deal found 15/4£467
Tue 22/417:34ORD - LHR
1 stop13h 56mVirgin Atlantic
Tue 29/409:00LHR - ORD
1 stop12h 00mVirgin Atlantic
Deal found 14/4£470

Cheapflights Fare Finder

Customise your flight search to find flights from O'Hare Intl to London 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 15 April 2025.
Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to London that are best for you.

Fly from

O'Hare Intl

Fly to

London

Route

Depart

Return

Price

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Tue 29/4

16:00-09:35

1 stop11h 35m

London Heathrow

Thu 8/5

08:40-15:55

1 stop13h 15m

£453

ChicagoLondon

ORD - LGW

ORDLGW

Chicago O'Hare Intl

Wed 14/5

19:25-14:40

1 stop13h 15m

London Gatwick

Tue 20/5

15:40-21:15

1 stop11h 35m

£453

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Sun 28/9

19:15-21:40

1 stop20h 25m

London Heathrow

Wed 15/10

19:30-16:10

1 stop26h 40m

£454

ChicagoLondon

ORD - LGW

ORDLGW

Chicago O'Hare Intl

Wed 7/5

22:15-14:40

1 stop10h 25m

London Gatwick

Tue 13/5

10:00-17:41

1 stop37h 41m

£454

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Sun 27/4

20:20-10:30

Nonstop8h 10m

London Heathrow

Thu 8/5

15:30-18:15

Nonstop8h 45m

£454

ChicagoLondon

ORD - LGW

ORDLGW

Chicago O'Hare Intl

Sun 27/4

11:52-10:40

1 stop16h 48m

London Gatwick

Tue 6/5

15:05-11:09

1 stop26h 04m

£457

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Sun 4/5

21:20-11:45

Nonstop8h 25m

London Heathrow

Mon 12/5

08:40-12:10

1 stop33h 30m

£459

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Mon 1/9

22:15-11:55

1 stop31h 40m

London Heathrow

Sat 6/9

21:25-21:15

1 stop29h 50m

£460

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Sun 27/4

14:20-07:55

1 stop11h 35m

London Heathrow

Tue 6/5

20:05-15:55

1 stop25h 50m

£461

ChicagoLondon

ORD - STN

ORDSTN

Chicago O'Hare Intl

Tue 6/5

09:35-22:55

2 stops31h 20m

London Stansted

Thu 15/5

06:55-10:54

2 stops33h 59m

£463

Flights are sorted by cheapest return flights first.

Deals found on 14/4

Showing 1-10 of 60 results
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Best time to book a flight from O'Hare Intl to London

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

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

Use this chart to determine the optimal time to book a return flight from O'Hare Intl to London. Price data was last updated on 11 April 2025.

The price you pay for your flight from Chicago O'Hare Intl Airport to London may vary depending on when you book. For the best chance of a lower fare, look to book 48 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, January is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to London (average of £112). Flying from Chicago O'Hare Intl Airport to London in August is currently the most expensive (average of £164). 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 ORD to LON?

Find hourly flight availability from O'Hare Intl to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 15 April 2025.

It’s typically best to fly out from Chicago O'Hare Intl Airport to London in the afternoon. Doing so could potentially save you 15% on the flight price compared to flying at midday, which is usually more expensive.

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

Explore weekly flight availability from O'Hare Intl to London. 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 15 April 2025.

The most flights from ORD to LON are scheduled on a Monday (57 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (48 on average).

Rainfall in London by month

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

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

Temperature in London by month

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

If weather is an important factor for your trip to London, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

Reviews of airlines servicing London

Get insights into the airlines that provide service to London. 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 London. Reviews last updated 15 April 2025.
Read through reviews of airlines operating flights from Chicago to London, such as Delta, KLM and Finnair. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very Good
7,916 reviews
Check prices

Boarding

8.2

Overall

8.0

Comfort

7.9

Entertainment

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very Good
7,916 reviews
Delta
8.0
Very Good
7,916 reviews
Check prices

Boarding

8.2

Overall

8.0

Comfort

7.9

Entertainment

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,323 reviews
Delta
8.0
Very Good
7,916 reviews
Check prices

Boarding

8.2

Overall

8.0

Comfort

7.9

Entertainment

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Finnair
7.6
Good
1,269 reviews
Delta
8.0
Very Good
7,916 reviews
Check prices

Boarding

8.2

Overall

8.0

Comfort

7.9

Entertainment

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Austrian Airlines
7.6
Good
775 reviews
Delta
8.0
Very Good
7,916 reviews
Check prices

Boarding

8.2

Overall

8.0

Comfort

7.9

Entertainment

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Air France
7.5
Good
1,435 reviews
Delta
8.0
Very Good
7,916 reviews
Check prices

Boarding

8.2

Overall

8.0

Comfort

7.9

Entertainment

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

Find useful and relevant information for your journey from O'Hare Intl to London. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    According to our current data, Icelandair (£453), Scandinavian Airlines (£454), and Iberia (£454) offers the cheapest pricing from Chicago O'Hare Intl Airport to London. Users have found that Icelandair is 21% cheaper than the other options available to this destination.

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

    The cheapest airline one-way is Icelandair, with whom users have recently found tickets for as low as £200. However, be on the lookout for offers from TAP AIR PORTUGAL and Scandinavian Airlines, as they are both options that can get you from Chicago O'Hare Intl Airport to London for a low price.

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

    The most popular flight routes from Chicago O'Hare Intl Airport to London are Chicago O'Hare Intl - London Heathrow, Chicago O'Hare Intl - London Gatwick and Chicago O'Hare Intl - London City.

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

    No one likes to see their flight delayed. When booking a flight from Chicago O'Hare Intl Airport to London consider choosing Royal Jordanian (100%), Gulf Air (92%) or Malaysia Airlines (86%) as they are the most reliable in getting you off to your destination on time.

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

    Looking for the cheapest flight from Chicago O'Hare Intl Airport to London? While on average our users pay £3,101, our data indicates the cheapest price to be £292. The most popular route (Chicago O'Hare Intl - London Heathrow), is priced around £381.

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

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

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

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from O'Hare Intl to London.

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

    Yes. Cheapflights offers flight deals from O'Hare Intl to London by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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

    Currently, January is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to London (average of £112). Flying from Chicago O'Hare Intl Airport to London in August is currently the most expensive (average of £164). 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
Hounslow
Deal
Milton Keynes
Gatwick
Luton
Slough
Croydon
Eastbourne
Wembley
Hayes
Crawley
Southend-on-Sea
Maidstone
Ipswich
Southall
Ilford
Winchester
Folkestone
Dartford
Watford

Browse thousands of different options on Cheapflights for your next trip

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Top 6 airlines flying from O'Hare Intl to London

Discover the top 6 airlines that operate flights from O'Hare Intl to London. 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 15 April 2025.
AirlineCheapestAverageFlexibilityOn-time
FinnairCheapest£363Average£704FlexibilityNo cancel feeOn-time76%
Search Finnair flights
American AirlinesCheapest£390Average£776FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
IberiaCheapest£455Average£616FlexibilityNo cancel feeOn-time77%
Search Iberia flights
British AirwaysCheapest£485Average£639FlexibilityNo cancel feeOn-time70%
Search British Airways flights
LufthansaCheapest£494Average£1,029FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
United AirlinesCheapest£506Average£716FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Fly with Cheapflights

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

When you search for this flight from O'Hare Intl to London, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

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

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

Need flexible booking options for your flight to London from O'Hare Intl? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

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

Not ready to book yet? You can track prices for flights from O'Hare Intl to London on Cheapflights with our Price Alert feature and get notified when better prices are available.

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