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Cheap flights from Chicago O'Hare Intl Airport to London from £277

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 2/8. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — LON
18 Jun — 25 Jun1
1 adult

Cheapflights Tip: The best prices from Chicago O'Hare Intl to London are usually found in April or February, booked 82 days in advance, depart on a Wednesday or Thursday 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 13 June 2025.

Round-trip from

£492

One-way from

£277

Popular in

June

Cheapest in

April

Average price

£832

Good round-trip deal

£569 or less

Good one-way deal

£337 or less
Scandinavian Airlines
  • Scandinavian Airlines
  • 26/8-6/9
  • 3 total stops
  • 29h 25m total
  • Chicago to London
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2/8
  • 2/8
  • 1 total stop
  • 33h 10m total
  • Chicago to London
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Highest demand for flights based on searches. 20% potential increase in price (£108 potential increase over avg. return price).
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Cheapest flight prices on average. 4% potential price decrease (£18 potential savings vs. average return price).
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Average for round-trip flights in June 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 13 June 2025.

Tue 26/819:15ORD - LHR
2 stops17h 35mScandinavian Airlines
Sat 6/910:20LHR - ORD
1 stop11h 50mScandinavian Airlines
Deal found 12/6£492
Tue 4/1119:05ORD - LCY
1 stop17h 35mSWISS
Tue 11/1109:15LCY - ORD
1 stop13h 00mSWISS
Deal found 12/6£492
Mon 28/719:05ORD - LGW
1 stop16h 45mSWISS
Mon 11/818:35LGW - ORD
1 stop27h 20mSWISS
Deal found 12/6£493
Fri 22/819:25ORD - LHR
1 stop10h 30mIcelandair
Thu 28/813:05LHR - ORD
1 stop11h 10mIcelandair
Deal found 10/6£494
Sun 20/710:37ORD - LGW
1 stop17h 23mVirgin Atlantic
Tue 29/712:00LGW - ORD
2 stops18h 09mVirgin Atlantic
Deal found 10/6£494
Mon 4/815:14ORD - LHR
1 stop10h 36mIberia
Wed 13/809:15LHR - ORD
Nonstop8h 40mIberia
Deal found 12/6£495
Mon 28/719:25ORD - LGW
1 stop10h 20mIcelandair
Wed 6/815:40LGW - ORD
1 stop11h 35mIcelandair
Deal found 12/6£495
Sun 20/721:50ORD - LHR
1 stop27h 50mUnited Airlines
Tue 29/717:40LHR - ORD
1 stop31h 49mUnited Airlines
Deal found 10/6£495
Mon 1/919:25ORD - LGW
1 stop10h 20mMultiple Airlines
Mon 8/910:00LGW - ORD
2 stops18h 28mMultiple Airlines
Deal found 12/6£495
Tue 19/822:30ORD - LCY
1 stop11h 55mMultiple Airlines
Wed 27/809:25LCY - ORD
1 stop12h 30mMultiple Airlines
Deal found 10/6£497
Mon 4/819:25ORD - STN
2 stops20h 45mMultiple Airlines
Tue 19/807:00STN - ORD
2 stops17h 15mMultiple Airlines
Deal found 11/6£497
Sun 6/707:00ORD - LGW
1 stop21h 00mDelta
Wed 6/812:00LGW - ORD
1 stop15h 43mDelta
Deal found 12/6£497

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 13 June 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 26/8

19:15-18:50

2 stops17h 35m

London Heathrow

Sat 6/9

10:20-16:10

1 stop11h 50m

£492

ChicagoLondon

ORD - LCY

ORDLCY

Chicago O'Hare Intl

Tue 4/11

19:05-18:40

1 stop17h 35m

London City

Tue 11/11

09:15-16:15

1 stop13h 00m

£492

ChicagoLondon

ORD - LGW

ORDLGW

Chicago O'Hare Intl

Mon 28/7

19:05-17:50

1 stop16h 45m

London Gatwick

Mon 11/8

18:35-15:55

1 stop27h 20m

£493

ChicagoLondon

ORD - LGW

ORDLGW

Chicago O'Hare Intl

Mon 4/8

19:25-11:45

1 stop10h 20m

London Gatwick

Wed 13/8

15:40-21:15

1 stop11h 35m

£494

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Mon 4/8

15:14-07:50

1 stop10h 36m

London Heathrow

Wed 13/8

09:15-11:55

Nonstop8h 40m

£495

ChicagoLondon

ORD - LGW

ORDLGW

Chicago O'Hare Intl

Mon 1/9

19:25-11:45

1 stop10h 20m

London Gatwick

Mon 8/9

10:00-22:28

2 stops18h 28m

£495

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Sun 20/7

16:05-06:20

Nonstop8h 15m

London Heathrow

Tue 29/7

14:10-17:20

Nonstop9h 10m

£496

ChicagoLondon

ORD - LCY

ORDLCY

Chicago O'Hare Intl

Wed 13/8

22:30-16:25

1 stop11h 55m

London City

Wed 10/9

09:25-15:55

1 stop12h 30m

£497

ChicagoLondon

ORD - STN

ORDSTN

Chicago O'Hare Intl

Mon 4/8

19:25-22:10

2 stops20h 45m

London Stansted

Tue 19/8

07:00-18:15

2 stops17h 15m

£497

ChicagoLondon

ORD - LGW

ORDLGW

Chicago O'Hare Intl

Sun 6/7

07:00-10:00

1 stop21h 00m

London Gatwick

Wed 6/8

12:00-21:43

1 stop15h 43m

£497

Flights are sorted by cheapest return flights first.

Deals found on 12/6

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 9 June 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 82 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 13 June 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 14% 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 13 June 2025.

The most flights from ORD to LON are scheduled on a Monday (57 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (52 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 13 June 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
7,950 reviews
Check prices

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

Crew

8.5

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

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

Crew

8.5

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

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

Crew

8.5

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

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

Crew

8.5

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!
Air France
7.5
Good
1,463 reviews
Delta
8.0
Very Good
7,950 reviews
Check prices

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

Crew

8.5

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!
SWISS
7.5
Good
1,624 reviews
Delta
8.0
Very Good
7,950 reviews
Check prices

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

Crew

8.5

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

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, Scandinavian Airlines (£492), SWISS (£492), and Icelandair (£494) offers the cheapest pricing from Chicago O'Hare Intl Airport to London. Users have found that Scandinavian Airlines is 14% 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 ITA Airways, with whom users have recently found tickets for as low as £279. However, be on the lookout for offers from British Airways and TAP AIR PORTUGAL, 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 (81%), SriLankan Airlines (75%) or Air Canada (72%) 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 £1,916, our data indicates the cheapest price to be £272. The most popular route (Chicago O'Hare Intl - London Heathrow), is priced around £277.

  • 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
Deal
Hounslow
Croydon
Milton Keynes
Gatwick
Luton
Slough
Wembley
Crawley
Eastbourne
Ilford
Southend-on-Sea
Watford
Hayes
Ipswich
Winchester
Folkestone
Maidstone
Dartford
Guildford

Browse thousands of different options on Cheapflights for your next trip

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Top 7 airlines flying from O'Hare Intl to London

Discover the top 7 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 13 June 2025.
AirlineCheapestAverageFlexibilityOn-time
FinnairCheapest£352Average£643FlexibilityNo cancel feeOn-time76%
Search Finnair flights
American AirlinesCheapest£378Average£626FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Aer LingusCheapest£406Average£573FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
IberiaCheapest£441Average£566FlexibilityNo cancel feeOn-time77%
Search Iberia flights
United AirlinesCheapest£457Average£693FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
British AirwaysCheapest£469Average£657FlexibilityNo cancel feeOn-time70%
Search British Airways flights
LufthansaCheapest£479Average£797FlexibilityNo cancel feeOn-time76%
Search Lufthansa 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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