Find flights
Deals
When to book
Airlines
FAQs

Cheap flights from Chicago O'Hare Intl Airport to London from £294

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 5/9. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — LON
8 Jul — 15 Jul1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Chicago O'Hare Intl to London are usually found in February or October, booked 46 days in advance, depart on a Sunday or Monday and return on a Wednesday

Cheap flight deals from O'Hare Intl to London

Enter your travel dates to find the best prices.

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 8 June 2026.

Mon 12/1007:00
ORD
-
LHR
1 stop17h 45m
Delta
Mon 19/1009:55
LHR
-
ORD
2 stops16h 29m
Delta
Deal found 7/6£687
Sat 11/719:25
ORD
-
LTN
2 stops21h 35m
Multiple Airlines
Tue 21/717:45
LTN
-
ORD
2 stops28h 15m
Multiple Airlines
Deal found 6/6£687
Sat 1/819:25
ORD
-
LGW
1 stop10h 20m
Icelandair
Fri 14/815:40
LGW
-
ORD
1 stop11h 45m
Icelandair
Deal found 5/6£687
Mon 13/715:45
ORD
-
STN
1 stop10h 05m
Multiple Airlines
Wed 22/708:30
STN
-
ORD
1 stop16h 45m
Multiple Airlines
Deal found 6/6£687
Fri 17/718:00
ORD
-
LHR
1 stop12h 45m
TAP AIR PORTUGAL
Wed 22/718:45
LHR
-
ORD
1 stop23h 55m
TAP AIR PORTUGAL
Deal found 5/6£688
Mon 20/719:25
ORD
-
LTN
2 stops21h 25m
Multiple Airlines
Fri 24/706:20
LTN
-
ORD
2 stops21h 05m
Multiple Airlines
Deal found 7/6£688
Mon 27/715:45
ORD
-
LGW
1 stop10h 10m
Multiple Airlines
Thu 6/808:40
LGW
-
ORD
1 stop11h 20m
Multiple Airlines
Deal found 8/6£688
Wed 9/914:15
ORD
-
STN
2 stops13h 10m
Multiple Airlines
Thu 10/922:00
STN
-
ORD
3 stops42h 17m
Multiple Airlines
Deal found 7/6£688
Tue 18/821:00
ORD
-
LHR
1 stop10h 30m
Aer Lingus
Thu 20/808:50
LHR
-
ORD
1 stop11h 10m
Aer Lingus
Deal found 7/6£689
Sun 2/815:45
ORD
-
LGW
1 stop11h 10m
Multiple Airlines
Sun 9/808:55
LGW
-
ORD
1 stop16h 20m
Multiple Airlines
Deal found 7/6£689
Thu 23/719:25
ORD
-
STN
2 stops19h 55m
Multiple Airlines
Mon 27/722:25
STN
-
ORD
3 stops27h 40m
Multiple Airlines
Deal found 5/6£689
Sun 13/919:15
ORD
-
LHR
1 stop14h 45m
Scandinavian Airlines
Fri 25/906:40
LHR
-
ORD
1 stop15h 30m
Scandinavian Airlines
Deal found 7/6£690

Find 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 8 June 2026.

Round-trip from

£687

One-way from

£294

Popular in

June

Cheapest in

February

Average price

£1,037

Good round-trip deal

£872 or less

Good one-way deal

£383 or less
11/7-21/7
  • 11/7-21/7
  • 4 total stops
  • 49h 50m total
  • Chicago to London
Search Deals
5/9
  • 5/9
  • 2 total stops
  • 19h 35m total
  • Chicago to London
Search Deals
Highest demand for flights based on searches. 29% potential increase in price (£192 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease (£30 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 Chicago O'Hare Intl to London (LON).
Search Deals
Price to beat on a one-way flight from Chicago O'Hare Intl to London (LON).
Search Deals

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 8 June 2026.
Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to London that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

ChicagoLondon

ORD - STN

ORDSTN

Chicago O'Hare Intl

Mon 14/9

11:25-16:40

1 stop23h 15m

London Stansted

Sun 27/9

17:35-09:40

1 stop22h 05m

£693

ChicagoLondon

ORD - STN

ORDSTN

Chicago O'Hare Intl

Tue 15/9

11:25-09:55

1 stop16h 30m

London Stansted

Sun 27/9

17:35-18:15

1 stop30h 40m

£693

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Sun 13/9

19:05-09:05

Nonstop8h 00m

London Heathrow

Mon 21/9

15:15-18:15

Nonstop9h 00m

£698

ChicagoLondon

ORD - STN

ORDSTN

Chicago O'Hare Intl

Sat 3/10

11:25-09:55

1 stop16h 30m

London Stansted

Sun 11/10

17:35-09:40

1 stop22h 05m

£700

ChicagoLondon

ORD - STN

ORDSTN

Chicago O'Hare Intl

Sat 10/10

11:25-16:40

1 stop23h 15m

London Stansted

Sat 17/10

17:45-09:40

1 stop21h 55m

£700

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

Sat 5/9

09:50-21:55

2 stops30h 05m

London Luton

Sat 12/9

12:45-16:00

2 stops33h 15m

£705

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Sun 19/7

15:19-09:15

1 stop11h 56m

London Heathrow

Tue 25/8

06:30-16:17

2 stops15h 47m

£705

ChicagoLondon

ORD - LCY

ORDLCY

Chicago O'Hare Intl

Sun 13/9

16:20-09:30

1 stop11h 10m

London City

Sat 19/9

10:00-21:37

2 stops17h 37m

£705

ChicagoLondon

ORD - SEN

ORDSEN

Chicago O'Hare Intl

Wed 5/8

19:25-16:40

2 stops15h 15m

London Southend

Wed 12/8

12:15-21:25

2 stops15h 10m

£706

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

Tue 21/7

19:25-15:30

2 stops14h 05m

London Luton

Mon 3/8

08:15-18:15

2 stops16h 00m

£709

Flights are sorted by cheapest return flights first.

Deals found on 7/6

Showing 1-10 of 60 resultsSorted by cheapest first
1
2
3
...
6

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

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 £150). Flying from Chicago O'Hare Intl Airport to London in December is currently the most expensive (average of £1,762). 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 8 June 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Chicago O'Hare Intl Airport to London as you normally would.

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 8 June 2026.

The most flights from ORD to LON are scheduled on a Monday (56 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (56 on average).

How much does it cost for a return flight from Chicago O'Hare Intl Airport to London?

What’s the top stopover airport for flights from Chicago O'Hare Intl Airport to London?

Share of one-stop return flights from Chicago O'Hare Intl Airport to London chosen by Cheapflights users in the past 12 months, using the same stopover each way.

Dublin (DUB) – chosen by Cheapflights users on 60% of one-stop itineraries from Chicago O'Hare Intl Airport to London on Cheapflights.

What’s the cheapest stopover airport for flights from Chicago O'Hare Intl Airport to London?

Average return fare for one-stop flights from Chicago O'Hare Intl Airport to London, chosen by Cheapflights users in the past 12 months, with the same stopover each way.

Reykjavik (KEF) is the most affordable one-stop option, with an average return flight price of £370.

What’s the fastest stopover option from Chicago O'Hare Intl Airport to London?

Shortest average travel time for one-stop one-way flights from Chicago O'Hare Intl Airport to London, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.

Flights via Reykjavik (KEF) have the shortest average one-way travel time for one-stop routes: 10h 20m.

Which airport typically offers the quickest stopover for flights from Chicago O'Hare Intl Airport to London?

Average stopover duration for one-stop one-way flights from Chicago O'Hare Intl Airport to London, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Reykjavik (KEF) offer the fastest connection on this route, with an average stopover time of 0h 55m.

How often are flights from Chicago to London delayed?

About 25% of weekly flights between Chicago and London have experienced delays in the past year, with the average delay time being 171 minutes.

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

Historically, flights departing in the early afternoon are less likely to be delayed, whereas flights leaving in the morning tend to experience delays more often.

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

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

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

Over the past year, United Airlines have had the lowest number of delays on this route, with just 25% of flights being delayed.

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

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 42 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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 8 June 2026.
Get a feel of what it's like to fly with United Airlines,Iberia, andBritish Airways from Chicago O'Hare Intl Airport to London 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
9,781 reviews
Check prices

Comfort

7.3

Boarding

7.7

Entertainment

7.1

Crew

8.1

Food

6.6

Overall

7.4

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.
United Airlines
7.4
Good
9,781 reviews
United Airlines
7.4
Good
9,781 reviews
Check prices

Comfort

7.3

Boarding

7.7

Entertainment

7.1

Crew

8.1

Food

6.6

Overall

7.4

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.
Iberia
7.0
Good
3,229 reviews
United Airlines
7.4
Good
9,781 reviews
Check prices

Comfort

7.3

Boarding

7.7

Entertainment

7.1

Crew

8.1

Food

6.6

Overall

7.4

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.
British Airways
6.7
Okay
8,028 reviews
United Airlines
7.4
Good
9,781 reviews
Check prices

Comfort

7.3

Boarding

7.7

Entertainment

7.1

Crew

8.1

Food

6.6

Overall

7.4

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.

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.

  • How long is the flight from Chicago O'Hare Intl Airport to London?

    For as low as £698, Turkish Airlines can have you in London from Chicago O'Hare Intl Airport in 8h. Chicago O'Hare Intl Airport and London are separated by a distance of 3939 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

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

    According to our current data, Lufthansa (£361), American Airlines (£388), and British Airways (£415) offers the cheapest pricing from Chicago O'Hare Intl Airport to London. Users have found that Lufthansa is 40% 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 TAP AIR PORTUGAL, with whom users have recently found tickets for as low as £166. However, be on the lookout for offers from Lufthansa and British Airways, 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 Air Canada (79%), Austrian Airlines (79%) or United Airlines (79%) 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 £781, our data indicates the cheapest price to be £359. The most popular route (Chicago O'Hare Intl - London Heathrow), is priced around £484.

  • 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 £150). Flying from Chicago O'Hare Intl Airport to London in December is currently the most expensive (average of £1,762). 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 London?

Book flights to London if you plan to visit one of these locations
Hounslow
Milton Keynes
Wembley
Luton
Gatwick
Croydon
Ilford
Slough
Hayes
Brentford
Colchester
Kingston upon Thames
Eastbourne
Watford
Ipswich
Romford
Guildford
Borehamwood
Folkestone
Southall

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 8 June 2026.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest£361Average£518FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
American AirlinesCheapest£388Average£617FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
British AirwaysCheapest£415Average£588FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Aer LingusCheapest£462Average£751FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
United AirlinesCheapest£511Average£700FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
IberiaCheapest£522Average£628FlexibilityNo cancel feeOn-time77%
Search Iberia flights
JetBlueCheapest£702Average£888FlexibilityNo cancel feeOn-time62%
Search JetBlue 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 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?

Cheapflights helps you find that perfect flight to London from O'Hare Intl by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.