Cheap flights from Chicago O'Hare Intl Airport to London from £248
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 2/9. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — LON
23 Jul — 30 Jul1
Return
1 adult
Economy
Cheapflights Tip: The best prices from Chicago O'Hare Intl to London are usually found in April or February, booked 17 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 18 July 2025.
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 18 July 2025.
Sat 2/815:35ORD - LHR
1 stop12h 25mUnited Airlines
Wed 13/813:00LHR - ORD
1 stop14h 28mUnited Airlines
Deal found 17/7£435
Wed 13/816:40ORD - LCY
1 stop10h 50mVirgin Atlantic
Wed 27/810:00LCY - ORD
2 stops16h 23mVirgin Atlantic
Deal found 17/7£435
Sat 6/919:15ORD - STN
2 stops23h 05mMultiple Airlines
Sat 13/914:45STN - ORD
3 stops31h 25mMultiple Airlines
Deal found 17/7£435
Fri 8/819:25ORD - LGW
1 stop10h 20mIcelandair
Mon 18/815:40LGW - ORD
1 stop11h 35mIcelandair
Deal found 18/7£436
Thu 28/819:25ORD - LHR
1 stop10h 30mIcelandair
Tue 25/1112:15LHR - ORD
1 stop11h 05mIcelandair
Deal found 17/7£436
Wed 10/917:17ORD - LGW
1 stop34h 43mMultiple Airlines
Sun 14/914:00LGW - ORD
1 stop32h 12mMultiple Airlines
Deal found 17/7£436
Thu 20/1119:20ORD - LHR
2 stops15h 05mScandinavian Airlines
Mon 24/1106:40LHR - ORD
2 stops16h 05mScandinavian Airlines
Deal found 18/7£437
Fri 15/819:59ORD - LHR
1 stop11h 31mDelta
Fri 22/809:20LHR - ORD
1 stop13h 08mDelta
Deal found 18/7£438
Wed 13/808:25ORD - LCY
2 stops16h 50mDelta
Wed 27/808:40LCY - ORD
2 stops19h 14mDelta
Deal found 17/7£438
Wed 27/808:55ORD - LHR
2 stops15h 35mAir Canada
Thu 11/914:05LHR - ORD
1 stop23h 55mAir Canada
Deal found 17/7£439
Mon 1/922:15ORD - LHR
2 stops17h 05mMultiple Airlines
Mon 8/906:40LHR - ORD
2 stops17h 35mMultiple Airlines
Deal found 18/7£440
Thu 14/819:59ORD - LHR
1 stop11h 31mVirgin Atlantic
Tue 26/810:55LHR - ORD
2 stops15h 28mVirgin Atlantic
Deal found 18/7£441
Best flights from O'Hare Intl to London
Discover carefully curated flight deals from O'Hare Intl to London that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 18 July 2025.
Sat 2/815:35ORD - LHR
1 stop12h 25mUnited Airlines
Wed 13/813:00LHR - ORD
1 stop14h 28mUnited Airlines
Deal found 17/7£435
Wed 13/816:40ORD - LCY
1 stop10h 50mVirgin Atlantic
Wed 27/810:00LCY - ORD
2 stops16h 23mVirgin Atlantic
Deal found 17/7£435
Sat 6/919:15ORD - STN
2 stops23h 05mMultiple Airlines
Sat 13/914:45STN - ORD
3 stops31h 25mMultiple Airlines
Deal found 17/7£435
Fri 8/819:25ORD - LGW
1 stop10h 20mIcelandair
Mon 18/815:40LGW - ORD
1 stop11h 35mIcelandair
Deal found 18/7£436
Thu 20/1119:20ORD - LHR
2 stops15h 05mScandinavian Airlines
Mon 24/1106:40LHR - ORD
2 stops16h 05mScandinavian Airlines
Deal found 18/7£437
Fri 15/819:59ORD - LHR
1 stop11h 31mDelta
Fri 22/809:20LHR - ORD
1 stop13h 08mDelta
Deal found 18/7£438
Wed 27/807:10ORD - LHR
2 stops17h 20mAir Canada
Fri 12/914:05LHR - ORD
1 stop12h 06mAir Canada
Deal found 17/7£439
Thu 7/819:05ORD - LCY
1 stop11h 25mSWISS
Fri 29/809:25LCY - ORD
1 stop12h 30mSWISS
Deal found 18/7£443
Thu 21/822:35ORD - LHR
Nonstop7h 40mFinnair
Mon 25/807:30LHR - ORD
1 stop16h 20mFinnair
Deal found 18/7£444
Fri 15/814:44ORD - LHR
1 stop11h 21mAmerican Airlines
Sat 30/807:40LHR - ORD
1 stop14h 05mAmerican Airlines
Deal found 17/7£445
Fri 12/922:35ORD - LHR
Nonstop7h 40mBritish Airways
Mon 29/913:10LHR - ORD
Nonstop8h 45mBritish Airways
Deal found 17/7£447
Sat 4/1013:59ORD - LHR
1 stop25h 41mIberia
Wed 15/1009:45LHR - ORD
1 stop12h 28mIberia
Deal found 17/7£449
Direct flights from O'Hare Intl to London
Explore direct flight options from O'Hare Intl to London based on user searches, and compare prices and availability for your desired travel dates. Data last updated 18 July 2025.
Tue 29/721:25ORD - LHR
Nonstop8h 20mUnited Airlines
Thu 14/814:10LHR - ORD
Nonstop9h 10mUnited Airlines
Deal found 17/7£436
Mon 15/922:35ORD - LHR
Nonstop7h 40mBritish Airways
Tue 30/913:10LHR - ORD
Nonstop8h 45mBritish Airways
Deal found 17/7£439
Sun 3/819:15ORD - LHR
Nonstop7h 55mAmerican Airlines
Tue 12/815:30LHR - ORD
Nonstop8h 45mAmerican Airlines
Deal found 16/7£457
Sat 6/917:40ORD - LHR
Nonstop7h 40mIberia
Mon 15/909:15LHR - ORD
Nonstop8h 35mIberia
Deal found 15/7£466
Last-minute flights from O'Hare Intl to London
Discover last-minute flight deals from O'Hare Intl to London. Data last updated 18 July 2025 and is based on user searches.
Wed 23/710:40ORD - LHR
1 stop13h 50mAir Canada
Wed 13/808:30LHR - ORD
1 stop12h 34mAir Canada
Deal found 16/7£483
Fri 25/717:40ORD - LHR
Nonstop7h 40mBritish Airways
Sat 30/808:15LHR - ORD
1 stop13h 30mBritish Airways
Deal found 17/7£437
Fri 25/715:14ORD - LHR
1 stop10h 36mAmerican Airlines
Sat 30/807:40LHR - ORD
1 stop14h 05mAmerican Airlines
Deal found 17/7£445
Fri 25/720:15ORD - LHR
Nonstop8h 05mIberia
Sat 30/809:15LHR - ORD
Nonstop8h 40mIberia
Deal found 17/7£460
Fri 25/716:15ORD - LCY
1 stop11h 15mKLM
Thu 18/909:20LCY - ORD
1 stop10h 50mKLM
Deal found 17/7£465
Fri 25/707:10ORD - LHR
1 stop19h 45mDelta
Sat 30/806:30LHR - ORD
2 stops15h 43mDelta
Deal found 17/7£471
Fri 25/722:15ORD - LGW
1 stop10h 25mIcelandair
Thu 18/915:40LGW - ORD
1 stop11h 35mIcelandair
Deal found 17/7£481
Fri 25/718:00ORD - LGW
1 stop15h 40mTAP AIR PORTUGAL
Thu 18/921:20LGW - ORD
2 stops25h 10mTAP AIR PORTUGAL
Deal found 17/7£555
Mon 28/721:25ORD - LHR
Nonstop8h 20mUnited Airlines
Fri 15/811:05LHR - ORD
Nonstop9h 05mUnited Airlines
Deal found 17/7£436
Mon 28/716:15ORD - LCY
1 stop20h 20mVirgin Atlantic
Sun 10/820:45LCY - ORD
1 stop23h 25mVirgin Atlantic
Deal found 18/7£464
Mon 28/719:25ORD - LHR
1 stop18h 55mIcelandair
Wed 6/821:25LHR - ORD
1 stop29h 50mIcelandair
Deal found 17/7£557
Mon 28/718:10ORD - LGW
1 stop15h 25mMultiple Airlines
Fri 15/810:00LGW - ORD
1 stop29h 22mMultiple Airlines
Deal found 17/7£571
One-way flights from O'Hare Intl to London
Search for one-way flight options from O'Hare Intl to London. Find affordable one-way fares based on user searches. Data last updated 18 July 2025.
Tue 2/922:15ORD - LTN
2 stops18h 00mMultiple Airlines
Deal found 17/7£248
Tue 29/710:00ORD - LCY
3 stops20h 30mMultiple Airlines
Deal found 18/7£248
Sun 17/818:00ORD - LHR
2 stops22h 15mMultiple Airlines
Deal found 17/7£249
Wed 23/707:00ORD - LGW
2 stops31h 40mMultiple Airlines
Deal found 17/7£249
Thu 31/705:05ORD - STN
3 stops34h 50mMultiple Airlines
Deal found 17/7£249
Tue 16/919:25ORD - LGW
1 stop13h 15mIcelandair
Deal found 18/7£252
Tue 19/812:07ORD - LHR
1 stop15h 23mJetBlue
Deal found 18/7£254
Thu 16/1017:30ORD - LHR
1 stop36h 35mWestJet
Deal found 17/7£255
Sat 26/718:15ORD - SEN
3 stops46h 10mMultiple Airlines
Deal found 17/7£255
Fri 3/1009:42ORD - LGW
1 stop17h 53mJetBlue
Deal found 17/7£263
Thu 20/1119:20ORD - LHR
2 stops17h 30mScandinavian Airlines
Deal found 16/7£269
Thu 20/1118:30ORD - LHR
1 stop19h 00mIcelandair
Deal found 16/7£271
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 18 July 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
Sat 2/8
15:35-10:00
1 stop12h 25m
London Heathrow
Wed 13/8
13:00-21:28
1 stop14h 28m
£435
ChicagoLondon
ORD - LCY
ORDLCY
Chicago O'Hare Intl
Wed 13/8
16:40-09:30
1 stop10h 50m
London City
Wed 27/8
10:00-20:23
2 stops16h 23m
£435
ChicagoLondon
ORD - STN
ORDSTN
Chicago O'Hare Intl
Sat 6/9
19:15-00:20
2 stops23h 05m
London Stansted
Sat 13/9
14:45-16:10
3 stops31h 25m
£435
ChicagoLondon
ORD - LGW
ORDLGW
Chicago O'Hare Intl
Fri 8/8
19:25-11:45
1 stop10h 20m
London Gatwick
Mon 18/8
15:40-21:15
1 stop11h 35m
£436
ChicagoLondon
ORD - LHR
ORDLHR
Chicago O'Hare Intl
Thu 28/8
19:25-11:55
1 stop10h 30m
London Heathrow
Tue 25/11
12:15-17:20
1 stop11h 05m
£436
ChicagoLondon
ORD - LGW
ORDLGW
Chicago O'Hare Intl
Wed 10/9
17:17-10:00
1 stop34h 43m
London Gatwick
Sun 14/9
14:00-16:12
1 stop32h 12m
£436
ChicagoLondon
ORD - LHR
ORDLHR
Chicago O'Hare Intl
Thu 20/11
19:20-16:25
2 stops15h 05m
London Heathrow
Mon 24/11
06:40-16:45
2 stops16h 05m
£437
ChicagoLondon
ORD - LHR
ORDLHR
Chicago O'Hare Intl
Fri 15/8
19:59-13:30
1 stop11h 31m
London Heathrow
Fri 22/8
09:20-16:28
1 stop13h 08m
£438
ChicagoLondon
ORD - LCY
ORDLCY
Chicago O'Hare Intl
Wed 13/8
08:25-07:15
2 stops16h 50m
London City
Wed 27/8
08:40-21:54
2 stops19h 14m
£438
ChicagoLondon
ORD - LHR
ORDLHR
Chicago O'Hare Intl
Wed 27/8
07:10-06:30
2 stops17h 20m
London Heathrow
Fri 12/9
14:05-20:11
1 stop12h 06m
£439
Flights are sorted by cheapest return flights first.
Deals found on 17/7
Showing 1-10 of 49 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 July 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 17 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 18 July 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 18 July 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).
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 18 July 2025.
Get a feel of what it's like to fly with Delta, KLM, andFinnair 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.
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, United Airlines (£435), Virgin Atlantic (£435), and Icelandair (£436) offers the cheapest pricing from Chicago O'Hare Intl Airport to London. Users have found that United Airlines is 25% 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 £252. However, be on the lookout for offers from JetBlue and WestJet, 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 (66%), Austrian Airlines (66%) or United Airlines (66%) 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 £1,767, our data indicates the cheapest price to be £289. The most popular route (Chicago O'Hare Intl - London Heathrow), is priced around £38.
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.
Browse through other flights departing from O'Hare Intl. Flights are based on user searches made on Cheapflights and were last updated on 18 July 2025.
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 18 July 2025.
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.
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