Cheap flights from London to Chicago O'Hare Intl Airport from £345
This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 14/11. Fares are subject to change and may not be available on all flights or dates of travel.
LON — ORD
4 Oct — 11 Oct1
Return
1 adult
Economy
Return
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from London to Chicago O'Hare Intl are usually found in February or January, booked 82 days in advance, depart on a Wednesday or Thursday and return on a Monday
Cheap flight deals from London to O'Hare Intl
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Cheapest flights from London to O'Hare Intl
Explore the most affordable flight options available from London to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 4 September 2026.
Thu 15/1013:00 -
1 stop12h 15m
Thu 22/1015:45 -
1 stop14h 40m
Deal found 3/9£526
Thu 5/1116:00 -
1 stop29h 30m
Wed 11/1119:00 -
2 stops43h 35m
Deal found 3/9£526
Thu 17/906:00 -
1 stop12h 35m
Mon 21/914:20 -
1 stop11h 35m
Deal found 4/9£526
Fri 25/906:20 -
1 stop13h 40m
Wed 30/915:45 -
1 stop17h 40m
Deal found 4/9£526
Fri 25/909:40 -
2 stops33h 41m
Mon 28/914:15 -
1 stop14h 30m
Deal found 3/9£527
Tue 15/921:25 -
1 stop26h 50m
Mon 19/1019:25 -
1 stop10h 30m
Deal found 4/9£527
Thu 5/1121:30 -
1 stop23h 25m
Mon 16/1117:40 -
1 stop21h 10m
Deal found 4/9£527
Thu 24/909:25 -
1 stop12h 30m
Tue 29/914:40 -
1 stop11h 45m
Deal found 2/9£528
Tue 22/906:00 -
1 stop12h 55m
Mon 5/1014:20 -
1 stop11h 35m
Deal found 3/9£528
Tue 3/1112:15 -
1 stop11h 05m
Sat 28/1118:30 -
1 stop10h 20m
Deal found 1/9£528
Tue 3/1121:30 -
2 stops24h 00m
Sun 8/1120:10 -
2 stops18h 40m
Deal found 2/9£528
Thu 10/908:40 -
1 stop16h 35m
Wed 23/921:00 -
1 stop14h 50m
Deal found 3/9£529
Best flights from London to O'Hare Intl
Discover carefully curated flight deals from London to O'Hare Intl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 4 September 2026.
Mon 9/1112:15 -
1 stop11h 05m
Fri 27/1118:30 -
1 stop10h 20m
Deal found 1/9£528
Tue 22/913:25 -
1 stop11h 50m
Wed 21/1015:45 -
1 stop10h 20m
Deal found 4/9£540
Thu 17/1206:00 -
1 stop17h 20m
Tue 29/1218:30 -
1 stop14h 35m
Deal found 2/9£542
Mon 14/908:40 -
1 stop33h 55m
Thu 15/1010:55 -
1 stop13h 00m
Deal found 2/9£549
Sat 19/906:40 -
1 stop15h 30m
Mon 21/919:15 -
2 stops17h 35m
Deal found 30/8£574
Fri 2/1008:40 -
1 stop11h 35m
Sat 30/113:30 -
1 stop11h 45m
Deal found 4/9£583
Tue 6/1010:35 -
2 stops17h 08m
Mon 19/1010:24 -
2 stops17h 16m
Deal found 3/9£599
Wed 16/910:00 -
1 stop10h 30m
Wed 11/1116:25 -
1 stop9h 45m
Deal found 1/9£611
Sat 10/1017:45 -
1 stop21h 55m
Thu 15/1020:10 -
1 stop38h 40m
Deal found 4/9£678
Wed 30/909:25 -
1 stop12h 30m
Fri 29/116:10 -
2 stops16h 15m
Deal found 4/9£686
Sun 22/1109:05 -
2 stops30h 54m
Sun 29/1120:10 -
2 stops18h 25m
Deal found 30/8£701
Wed 16/915:40 -
1 stop11h 45m
Sat 14/1118:30 -
1 stop10h 25m
Deal found 1/9£533
Fri 18/907:40 -
1 stop12h 20m
Mon 21/921:00 -
1 stop10h 55m
Deal found 1/9£542
Thu 1/1013:00 -
2 stops33h 10m
Thu 8/1019:15 -
3 stops22h 10m
Deal found 1/9£543
Wed 30/909:55 -
2 stops16h 35m
Wed 7/1010:30 -
1 stop13h 50m
Deal found 2/9£585
Mon 1/307:40 -
Nonstop9h 05m
Thu 11/315:45 -
Nonstop8h 10m
Deal found 30/8£585
Wed 28/1012:10 -
1 stop12h 10m
Mon 9/1121:50 -
Nonstop7h 45m
Deal found 31/8£547
Thu 22/1015:30 -
2 stops32h 20m
Wed 28/1016:55 -
1 stop11h 20m
Deal found 3/9£548
Tue 6/1008:25 -
1 stop11h 50m
Mon 19/1013:25 -
2 stops12h 30m
Deal found 3/9£608
Sat 7/1108:40 -
2 stops17h 50m
Sat 21/1110:30 -
1 stop14h 45m
Deal found 31/8£585
Thu 15/1012:10 -
1 stop30h 25m
Thu 22/1018:05 -
Nonstop8h 25m
Deal found 3/9£598
Thu 5/1107:40 -
1 stop12h 30m
Fri 27/1117:45 -
Nonstop8h 10m
Deal found 1/9£554
Sat 10/1017:40 -
1 stop22h 00m
Thu 15/1020:10 -
1 stop38h 35m
Deal found 4/9£689
Mon 16/1110:00 -
1 stop12h 15m
Fri 27/1118:25 -
1 stop15h 20m
Deal found 30/8£597
Thu 19/1108:30 -
1 stop13h 45m
Sat 28/1121:35 -
2 stops14h 15m
Deal found 30/8£723
Wed 14/1008:25 -
1 stop12h 05m
Wed 21/1013:55 -
2 stops13h 35m
Deal found 30/8£660
Sun 1/1106:00 -
1 stop17h 20m
Sat 7/1118:30 -
1 stop12h 35m
Deal found 31/8£559
Thu 17/921:20 -
2 stops24h 40m
Mon 21/909:38 -
2 stops18h 07m
Deal found 4/9£765
Tue 3/1117:20 -
1 stop23h 40m
Sat 28/1111:45 -
1 stop22h 35m
Deal found 1/9£702
Tue 15/1207:00 -
1 stop16h 20m
Tue 29/1218:30 -
1 stop14h 35m
Deal found 31/8£566
Direct flights from London to O'Hare Intl
Explore direct flight options from London to O'Hare Intl based on user searches, and compare prices and availability for your desired travel dates. Data last updated 4 September 2026.
Thu 17/914:25 -
Nonstop8h 50m
Wed 30/920:50 -
Nonstop8h 00m
Deal found 2/9£534
Tue 22/909:45 -
Nonstop8h 40m
Tue 29/917:55 -
Nonstop7h 45m
Deal found 3/9£552
Thu 17/909:45 -
Nonstop8h 40m
Wed 30/920:50 -
Nonstop8h 00m
Deal found 31/8£554
Wed 16/915:15 -
Nonstop9h 00m
Mon 21/917:55 -
Nonstop7h 45m
Deal found 3/9£555
Wed 23/909:45 -
Nonstop8h 40m
Wed 30/917:55 -
Nonstop7h 45m
Deal found 2/9£556
Thu 17/913:10 -
Nonstop8h 45m
Mon 21/922:25 -
Nonstop7h 50m
Deal found 1/9£557
Tue 22/909:45 -
Nonstop8h 40m
Wed 21/1020:50 -
Nonstop8h 00m
Deal found 3/9£557
Mon 21/914:10 -
Nonstop9h 15m
Tue 29/918:35 -
Nonstop8h 25m
Deal found 3/9£558
Fri 18/909:45 -
Nonstop8h 40m
Mon 21/922:25 -
Nonstop7h 50m
Deal found 2/9£559
Sat 31/1011:00 -
Nonstop8h 45m
Mon 30/1117:10 -
Nonstop7h 45m
Deal found 3/9£560
Tue 3/1116:30 -
Nonstop9h 00m
Thu 26/1118:30 -
Nonstop8h 05m
Deal found 1/9£560
Last-minute flights from London to O'Hare Intl
Discover last-minute flight deals from London to O'Hare Intl. Data last updated 4 September 2026 and is based on user searches.
Wed 9/912:00 -
1 stop13h 15m
Wed 16/921:00 -
1 stop10h 30m
Deal found 1/9£528
Thu 10/908:40 -
1 stop16h 35m
Wed 23/921:00 -
1 stop14h 50m
Deal found 3/9£529
Thu 10/909:25 -
1 stop15h 50m
Wed 23/915:45 -
1 stop11h 15m
Deal found 2/9£529
Fri 11/906:35 -
1 stop13h 25m
Sat 19/915:45 -
1 stop10h 05m
Deal found 4/9£529
Tue 15/921:25 -
1 stop26h 50m
Mon 19/1019:25 -
1 stop10h 30m
Deal found 4/9£527
Thu 17/906:00 -
1 stop12h 35m
Mon 21/914:20 -
1 stop11h 35m
Deal found 4/9£526
Tue 22/906:00 -
1 stop12h 55m
Mon 5/1014:20 -
1 stop11h 35m
Deal found 3/9£528
Thu 24/909:25 -
1 stop12h 30m
Tue 29/914:40 -
1 stop11h 45m
Deal found 2/9£528
Fri 25/906:20 -
1 stop13h 40m
Wed 30/915:45 -
1 stop17h 40m
Deal found 4/9£526
Fri 25/909:40 -
2 stops33h 41m
Mon 28/914:15 -
1 stop14h 30m
Deal found 3/9£527
Wed 14/1021:05 -
2 stops25h 05m
Mon 19/1019:15 -
2 stops15h 45m
Deal found 31/8£529
Thu 15/1013:00 -
1 stop12h 15m
Thu 22/1015:45 -
1 stop14h 40m
Deal found 3/9£526
One-way flights from London to O'Hare Intl
Search for one-way flight options from London to O'Hare Intl. Find affordable one-way fares based on user searches. Data last updated 4 September 2026.
Sat 14/1121:45 -
3 stops47h 10m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 1/9£345
Sat 31/1020:50 -
2 stops24h 40m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 31/8£346
Mon 14/920:50 -
2 stops49h 10m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 1/9£346
Sun 22/1107:35 -
3 stops39h 45m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 1/9£347
Fri 23/1020:50 -
3 stops27h 00m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 31/8£347
Sun 29/1118:40 -
1 stop27h 35m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 31/8£347
Thu 29/1012:50 -
2 stops35h 30m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 31/8£348
Sun 1/1120:05 -
1 stop26h 10m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 1/9£348
Mon 14/920:35 -
3 stops49h 25m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 1/9£348
Fri 25/911:35 -
1 stop14h 37m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 2/9£349
Wed 9/912:45 -
2 stops57h 15m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 4/9£349
Wed 27/120:00 -
1 stop24h 55m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 3/9£349
Find flight deals from London to O'Hare Intl
Discover tips and strategies to find the most affordable flight options for your journey from London (LON) to O'Hare Intl (ORD). 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 4 September 2026.
Customise your flight search to find flights from London to O'Hare Intl 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 7,457,451 searches. Data last updated 4 September 2026.
Use the filters below to find and compare flights from London to Chicago O'Hare Intl Airport that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
Cheapest return flight
LondonChicago
STN London Stansted - ORD Chicago O'Hare Intl
STNORD
London Stansted
Wed 27/1
20:00-14:55
1 stop24h 55m
Chicago O'Hare Intl
Wed 31/12
00:00-07:00
Nonstop0h 00m
£349
LondonChicago
SEN London Southend - ORD Chicago O'Hare Intl
SENORD
London Southend
Sat 5/12
14:30-15:30
3 stops31h 00m
Chicago O'Hare Intl
Wed 31/12
00:00-07:00
Nonstop0h 00m
£361
LondonChicago
LGW London Gatwick - ORD Chicago O'Hare Intl
LGWORD
London Gatwick
Sun 22/11
12:35-18:35
1 stop36h 00m
Chicago O'Hare Intl
Wed 31/12
00:00-07:00
Nonstop0h 00m
£365
LondonChicago
LTN London Luton - ORD Chicago O'Hare Intl
LTNORD
London Luton
Mon 14/9
20:35-16:00
3 stops49h 25m
Chicago O'Hare Intl
Wed 31/12
00:00-07:00
Nonstop0h 00m
£366
LondonChicago
SEN London Southend - ORD Chicago O'Hare Intl
SENORD
London Southend
Sun 7/2
07:05-19:15
3 stops42h 10m
Chicago O'Hare Intl
Wed 31/12
00:00-07:00
Nonstop0h 00m
£366
LondonChicago
SEN London Southend - ORD Chicago O'Hare Intl
SENORD
London Southend
Wed 16/9
08:25-12:40
2 stops34h 15m
Chicago O'Hare Intl
Wed 31/12
00:00-07:00
Nonstop0h 00m
£368
LondonChicago
SEN London Southend - ORD Chicago O'Hare Intl
SENORD
London Southend
Thu 3/12
17:20-15:30
2 stops28h 10m
Chicago O'Hare Intl
Wed 31/12
00:00-07:00
Nonstop0h 00m
£375
LondonChicago
LHR London Heathrow - ORD Chicago O'Hare Intl
LHRORD
London Heathrow
Sat 6/2
20:35-17:20
1 stop26h 45m
Chicago O'Hare Intl
Wed 31/12
00:00-07:00
Nonstop0h 00m
£403
LondonChicago
LHR London Heathrow - ORD Chicago O'Hare Intl
LHRORD
London Heathrow
Thu 1/10
08:40-19:01
1 stop16h 21m
Chicago O'Hare Intl
Wed 31/12
00:00-07:00
Nonstop0h 00m
£408
LondonChicago
LHR London Heathrow - ORD Chicago O'Hare Intl
LHRORD
London Heathrow
Fri 2/10
08:40-19:01
1 stop16h 21m
Chicago O'Hare Intl
Wed 31/12
00:00-07:00
Nonstop0h 00m
£408
Flights are sorted by cheapest return flights first.
Deals found on 4/9
Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from London to O'Hare Intl
Have a flexible travel schedule? Discover the best time to fly to O'Hare Intl from London with our price prediction graph.
LON-ORD
LTN-ORD
LHR-ORD
LGW-ORD
STN-ORD
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 London to Chicago O'Hare Intl Airport
LON-ORD
LTN-ORD
LHR-ORD
LGW-ORD
STN-ORD
What is the cheapest month to book a flight from London to Chicago O'Hare Intl Airport?
Currently, February is the cheapest month in which you can book a flight from London to Chicago O'Hare Intl Airport (average of £473). Flying from London to Chicago O'Hare Intl Airport in August is currently the most expensive (average of £805). 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 LON to ORD?
Find hourly flight availability from London to O'Hare Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 4 September 2026.
When flying from London to Chicago O'Hare Intl Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
Weekly flight availability from London to Chicago O'Hare Intl Airport
Explore weekly flight availability from London to O'Hare Intl. 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 4 September 2026.
The most flights from LON to ORD are scheduled on a Wednesday (49 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (32 on average).
How much does it cost for a return flight from London to Chicago O'Hare Intl Airport?
Airfare is typical for this route at the moment.
London to Chicago O'Hare Intl Airport flights typically cost between £472 and £696 in October.The cheapest return price found within the last 5 days was £526 on Multiple Airlines (15 Oct–22 Oct).
What’s the top stopover airport for flights from London to Chicago O'Hare Intl Airport?
Share of one-stop return flights from London to Chicago O'Hare Intl Airport chosen by Cheapflights users in the past 12 months, using the same stopover each way.
Reykjavik (KEF) – chosen by Cheapflights users on 45% of one-stop itineraries from London to Chicago O'Hare Intl Airport on Cheapflights.
What’s the cheapest stopover airport for flights from London to Chicago O'Hare Intl Airport?
Average return fare for one-stop flights from London to Chicago O'Hare Intl Airport, chosen by Cheapflights users in the past 12 months, with the same stopover each way.
Lisbon (LIS) is the most affordable one-stop option, with an average return flight price of £405.
What’s the fastest stopover option from London to Chicago O'Hare Intl Airport?
Shortest average travel time for one-stop one-way flights from London to Chicago O'Hare Intl Airport, 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: 11h 00m.
Which airport typically offers the quickest stopover for flights from London to Chicago O'Hare Intl Airport?
Average stopover duration for one-stop one-way flights from London to Chicago O'Hare Intl Airport, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via Zurich (ZRH) offer the fastest connection on this route, with an average stopover time of 1h 03m.
How often are flights from London to Chicago delayed?
About 10% of weekly flights between London and Chicago have experienced delays in the past year, with the average delay time being 181 minutes.
What is the most punctual flight time for London to Chicago flights?
Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Monday tends to have the lowest number of delays on this route, whereas Tuesday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on London to Chicago flights?
Over the past year, United Airlines have had the lowest number of delays on this route, with just 6% of flights being delayed.
How far ahead should I book a flight from London to Chicago O'Hare Intl Airport?
The best time to book flights from London to Chicago O'Hare Intl Airport is 78 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
Reviews of airlines servicing O'Hare Intl
Get insights into the airlines that provide service to O'Hare Intl. 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 O'Hare Intl. Reviews last updated 4 September 2026.
Get a feel of what it's like to fly with United Airlines,Aer Lingus, andIcelandair from London to Chicago O'Hare Intl Airport by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Had to go through TSA again, already purchased bottle drink. TSA would not let through, United changed gates last minute. This experience bad for everyone. Staff rude, not our fault. Staff from Chicago to Wichita excellent!
Had to go through TSA again, already purchased bottle drink. TSA would not let through, United changed gates last minute. This experience bad for everyone. Staff rude, not our fault. Staff from Chicago to Wichita excellent!
Had to go through TSA again, already purchased bottle drink. TSA would not let through, United changed gates last minute. This experience bad for everyone. Staff rude, not our fault. Staff from Chicago to Wichita excellent!
Had to go through TSA again, already purchased bottle drink. TSA would not let through, United changed gates last minute. This experience bad for everyone. Staff rude, not our fault. Staff from Chicago to Wichita excellent!
Had to go through TSA again, already purchased bottle drink. TSA would not let through, United changed gates last minute. This experience bad for everyone. Staff rude, not our fault. Staff from Chicago to Wichita excellent!
Had to go through TSA again, already purchased bottle drink. TSA would not let through, United changed gates last minute. This experience bad for everyone. Staff rude, not our fault. Staff from Chicago to Wichita excellent!
Related info for your journey
Find useful and relevant information for your journey from London to O'Hare Intl. 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 London to Chicago O'Hare Intl Airport?
Icelandair, British Airways, and United Airlines can get you from London to Chicago O'Hare Intl Airport in just under 11h 05m. Your travel time can differ by up to 22h 50m. There are 3939 mi between London and Chicago O'Hare Intl Airport. This flight may include one or multiple stops.
What are the cheapest airlines flying from London to Chicago O'Hare Intl Airport round-trip?
Flying on Virgin Atlantic is currently your cheapest option to Chicago O'Hare Intl Airport, with prices starting at £327. Additional return tickets that might be worth considering are offered by Icelandair and Scandinavian Airlines, with the lowest prices starting at £353 and £381, respectively. You may be able to fly from London to Chicago O'Hare Intl Airport for 47% less than the average price by searching for these airlines.
What are the cheapest airlines to fly from London to Chicago O'Hare Intl Airport one-way?
For one-way options, check prices for JetBlue. According to our data, you can fly for as low as £309. Users have also found prices from £317 and £323 on Aer Lingus and Icelandair, respectively.
What are the most popular routes from London to Chicago O'Hare Intl Airport?
When deciding which route to take from London to Chicago O'Hare Intl Airport consider London Heathrow - Chicago O'Hare Intl, London Gatwick - Chicago O'Hare Intl or London City - Chicago O'Hare Intl as they are the most popular.
What are the most reliable airlines from London to Chicago O'Hare Intl Airport?
Consider Air Canada (87%), Austrian Airlines (87%) or United Airlines (87%) when booking your flight. These represent the most reliable airlines when flying from London to Chicago O'Hare Intl Airport.
What are the cheapest flights from London to Chicago O'Hare Intl Airport?
The cheapest flight price from London to Chicago O'Hare Intl Airport is £412. On average you can expect to pay £2,941. The most popular route, (London Heathrow - Chicago O'Hare Intl), can usually be booked for £378.
Can I find deals for business class flights from London to O'Hare Intl?
Yes. Cheapflights offers flight deals from London to O'Hare Intl 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 London to Chicago O'Hare Intl Airport?
Currently, February is the cheapest month in which you can book a flight from London to Chicago O'Hare Intl Airport (average of £473). Flying from London to Chicago O'Hare Intl Airport in August is currently the most expensive (average of £805). 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.
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
Elk Grove Village
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Fly from London to O'Hare Intl on these airlines
Choose from the following airlines for your flight from London to O'Hare Intl. Flights are based on user searches made on Cheapflights and were last updated on 4 September 2026.
Explore flights to O'Hare Intl departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 4 September 2026.
Discover the top 10 airlines that operate flights from London to O'Hare Intl. 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 7,457,451 searches. Data last updated 4 September 2026.
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 London to O'Hare Intl?
Cheapflights helps you search for flights from London to O'Hare Intl via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.
Why should you use Cheapflights to find cheap flight tickets from London to O'Hare Intl?
Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from London to O'Hare Intl for you. Better yet — we are completely free to use.
Can Cheapflights find flights from London to O'Hare Intl with no change fees?
Users can book flights with no change fees policies with our dedicated filters. Book flights from London to O'Hare Intl flexibly with Cheapflights today.
Can Cheapflights notify me if prices for flights from London to O'Hare Intl become cheaper?
Yes! Start tracking prices for London to O'Hare Intl flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.
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