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Cheap flights from Chicago O'Hare Intl Airport to London from £281

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 9/1. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — LON
9 janv. — 16 janv.1
1 adult
1 adult, Economy, 0 bags

Cheapflights Tip: The best prices from Chicago O'Hare Intl to London are usually found in April or October, booked 49 days in advance, depart on a Sunday or Thursday 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 10 décembre 2025.

mer. 31/1213:24ORD - LHR
1 stop11h 16mMultiple Airlines
jeu. 15/111:10LHR - ORD
1 stop13h 15mMultiple Airlines
Deal found 9/12£429
mer. 10/1214:40ORD - LHR
1 stop13h 00mMultiple Airlines
ven. 16/106:00LHR - ORD
1 stop12h 45mMultiple Airlines
Deal found 7/12£438
mar. 30/1213:24ORD - LHR
1 stop11h 16mAustrian Airlines
ven. 9/116:20LHR - ORD
1 stop32h 17mAustrian Airlines
Deal found 8/12£453
mar. 30/1218:30ORD - LHR
1 stop10h 20mIcelandair
sam. 17/112:15LHR - ORD
1 stop11h 05mIcelandair
Deal found 9/12£454
mer. 31/1215:45ORD - LHR
Nonstop8h 10mUnited Airlines
mar. 20/111:10LHR - ORD
1 stop13h 15mUnited Airlines
Deal found 9/12£459
mer. 10/1215:45ORD - LHR
Nonstop8h 10mUnited Airlines
ven. 16/111:10LHR - ORD
1 stop13h 15mUnited Airlines
Deal found 7/12£461
mer. 10/1213:05ORD - LHR
1 stop15h 45mAustrian Airlines
mer. 17/1212:05LHR - ORD
1 stop12h 26mAustrian Airlines
Deal found 8/12£462
mer. 31/1206:35ORD - LHR
1 stop18h 30mDelta
ven. 16/106:30LHR - ORD
1 stop13h 50mDelta
Deal found 9/12£464
mar. 30/1213:24ORD - LHR
1 stop11h 16mMultiple Airlines
lun. 19/107:40LHR - ORD
1 stop12h 30mMultiple Airlines
Deal found 9/12£465
mer. 10/1218:30ORD - LGW
1 stop10h 25mIcelandair
ven. 16/111:55LGW - ORD
1 stop11h 25mIcelandair
Deal found 7/12£465
mar. 30/1221:05ORD - LHR
Nonstop8h 10mUnited Airlines
ven. 16/108:30LHR - ORD
1 stop12h 50mUnited Airlines
Deal found 9/12£468
dim. 7/1220:25ORD - LGW
1 stop13h 20mTAP AIR PORTUGAL
mar. 16/1210:40LGW - ORD
1 stop34h 20mTAP AIR PORTUGAL
Deal found 7/12£468

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 10 décembre 2025.

Round-trip from

£417

One-way from

£281

Popular in

June

Cheapest in

April

Average price

£619

Good round-trip deal

£567 or less

Good one-way deal

£361 or less
Scandinavian Airlines
  • Scandinavian Airlines
  • 23/1-31/1
  • 3 total stops
  • 32h 44m total
  • Chicago to London
Search Deals
Scandinavian Airlines
  • Scandinavian Airlines
  • 9/1
  • 1 total stop
  • 14h 40m total
  • Chicago to London
Search Deals
Highest demand for flights based on searches. 22% potential increase in price (£122 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (£23 potential savings vs. average return price).
Search Deals
Average for round-trip flights in December 2025
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).
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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 10 décembre 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 - LTN

ORDLTN

Chicago O'Hare Intl

mer. 21/1

18:30-12:55

1 stop12h 25m

London Luton

mer. 28/1

08:00-17:20

1 stop15h 20m

£425

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

ven. 6/3

07:00-09:20

2 stops20h 20m

London Heathrow

dim. 15/3

21:05-17:45

2 stops25h 40m

£426

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

mer. 25/2

18:30-12:55

1 stop12h 25m

London Luton

mar. 3/3

07:00-17:20

1 stop16h 20m

£429

ChicagoLondon

ORD - LGW

ORDLGW

Chicago O'Hare Intl

ven. 23/1

12:44-10:00

1 stop15h 16m

London Gatwick

lun. 26/1

14:00-17:52

1 stop33h 52m

£429

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

ven. 23/1

19:20-08:55

2 stops31h 35m

London Heathrow

sam. 31/1

06:40-16:45

2 stops16h 05m

£437

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

mer. 14/1

21:00-17:05

1 stop14h 05m

London Luton

jeu. 22/1

09:00-19:15

1 stop16h 15m

£438

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

dim. 11/1

19:10-18:15

2 stops17h 05m

London Luton

mer. 21/1

18:55-16:45

2 stops27h 50m

£447

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

mer. 18/3

16:45-05:55

Nonstop8h 10m

London Heathrow

lun. 23/3

13:45-17:20

1 stop32h 35m

£465

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

lun. 9/2

17:50-07:55

Nonstop8h 05m

London Heathrow

mar. 17/2

06:35-14:10

1 stop13h 35m

£465

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

mer. 14/1

15:45-05:55

Nonstop8h 10m

London Heathrow

lun. 19/1

12:05-16:20

1 stop34h 15m

£465

Flights are sorted by cheapest return flights first.

Deals found on 8/12

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 5 December 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 49 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, June is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to London (average of £282). Flying from Chicago O'Hare Intl Airport to London in July is currently the most expensive (average of £453). 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 10 décembre 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 29% 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 10 décembre 2025.

The most flights from ORD to LON are scheduled on a Monday (45 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (39 on average).

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 29% 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 Amsterdam (AMS) have the shortest average one-way travel time for one-stop routes: 9h 50m.

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 1h 02m.

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 168 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 Thursday 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 23% of flights being delayed.

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 10 décembre 2025.
Get a feel of what it's like to fly with United Airlines, Icelandair, andIberia 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
9,092 reviews
Check prices

Boarding

7.7

Entertainment

7.1

Crew

8.1

Food

6.6

Comfort

7.3

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.
United Airlines
7.4
Good
9,092 reviews
United Airlines
7.4
Good
9,092 reviews
Check prices

Boarding

7.7

Entertainment

7.1

Crew

8.1

Food

6.6

Comfort

7.3

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.
Icelandair
7.0
Good
588 reviews
United Airlines
7.4
Good
9,092 reviews
Check prices

Boarding

7.7

Entertainment

7.1

Crew

8.1

Food

6.6

Comfort

7.3

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.
Iberia
7.0
Good
3,045 reviews
United Airlines
7.4
Good
9,092 reviews
Check prices

Boarding

7.7

Entertainment

7.1

Crew

8.1

Food

6.6

Comfort

7.3

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.
British Airways
6.7
Okay
7,573 reviews
United Airlines
7.4
Good
9,092 reviews
Check prices

Boarding

7.7

Entertainment

7.1

Crew

8.1

Food

6.6

Comfort

7.3

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.

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 £465, Scandinavian Airlines can have you in London from Chicago O'Hare Intl Airport in 8h 10m. 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 (£389), and Finnair (£417) offers the cheapest pricing from Chicago O'Hare Intl Airport to London. Users have found that Lufthansa is 35% 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 United Airlines and Lufthansa, 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 (64%), Austrian Airlines (64%) or United Airlines (64%) 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 £507, our data indicates the cheapest price to be £296. The most popular route (Chicago O'Hare Intl - London Heathrow), is priced around £324.

  • 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, June is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to London (average of £282). Flying from Chicago O'Hare Intl Airport to London in July is currently the most expensive (average of £453). 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?

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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 10 décembre 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest£361Average£521FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
American AirlinesCheapest£389Average£618FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
FinnairCheapest£417Average£681FlexibilityNo cancel feeOn-time76%
Search Finnair flights
British AirwaysCheapest£426Average£595FlexibilityNo cancel feeOn-time70%
Search British Airways flights
IberiaCheapest£450Average£535FlexibilityNo cancel feeOn-time77%
Search Iberia flights
Aer LingusCheapest£453Average£584FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
United AirlinesCheapest£466Average£701FlexibilityNo 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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