Cheap flights from Chicago O'Hare Intl Airport to London Heathrow Airport from C$ 461
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 25/4. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — LHR
5 Dec — 12 Dec1
Round-trip
1 adult
Economy
Round-trip
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Chicago O'Hare Intl to London Heathrow are usually found in January or February, booked 2 days in advance, depart on a Tuesday or Monday and return on a Monday
Cheap flight deals from O'Hare Intl to Heathrow
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Cheapest flights from O'Hare Intl to Heathrow
Explore the most affordable flight options available from O'Hare Intl to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 5 November 2026.
Sat 5/127:10 p.m. -
2 stops44h 10m
Tue 8/127:05 a.m. -
2 stops39h 50m
Deal found 4/11C$ 964
Sun 22/117:10 p.m. -
2 stops32h 25m
Wed 25/116:40 a.m. -
1 stop16h 05m
Deal found 31/10C$ 986
Sat 12/127:10 p.m. -
2 stops39h 50m
Tue 15/1210:20 a.m. -
1 stop12h 25m
Deal found 3/11C$ 1,012
Mon 23/117:10 p.m. -
2 stops32h 25m
Thu 26/116:40 a.m. -
1 stop16h 05m
Deal found 31/10C$ 1,028
Fri 11/127:10 p.m. -
1 stop17h 20m
Sun 13/129:55 a.m. -
2 stops36h 50m
Deal found 31/10C$ 1,054
Sun 29/117:10 p.m. -
2 stops17h 40m
Sun 13/126:40 a.m. -
1 stop16h 05m
Deal found 5/11C$ 1,071
Wed 9/127:10 p.m. -
2 stops15h 50m
Sun 13/126:40 a.m. -
1 stop16h 05m
Deal found 2/11C$ 1,074
Sun 29/117:10 p.m. -
1 stop16h 30m
Mon 7/126:40 a.m. -
2 stops16h 05m
Deal found 3/11C$ 1,075
Tue 17/117:10 p.m. -
2 stops15h 50m
Wed 9/127:05 a.m. -
2 stops15h 50m
Deal found 2/11C$ 1,079
Wed 2/127:10 p.m. -
1 stop17h 20m
Sun 13/126:40 a.m. -
1 stop16h 05m
Deal found 2/11C$ 1,084
Mon 7/127:10 p.m. -
1 stop17h 20m
Thu 10/126:40 a.m. -
1 stop16h 05m
Deal found 4/11C$ 1,085
Best flights from O'Hare Intl to Heathrow
Discover carefully curated flight deals from O'Hare Intl to Heathrow that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 5 November 2026.
Sat 10/47:15 p.m. -
2 stops15h 10m
Sat 17/46:40 a.m. -
2 stops15h 30m
Deal found 2/11C$ 1,091
Tue 8/123:45 p.m. -
Nonstop8h 10m
Tue 15/129:00 a.m. -
1 stop13h 15m
Deal found 1/11C$ 1,267
Sun 13/125:45 p.m. -
Nonstop8h 10m
Wed 13/19:00 a.m. -
1 stop13h 15m
Deal found 3/11C$ 1,342
Thu 1/47:15 p.m. -
2 stops15h 10m
Sat 1/56:40 a.m. -
2 stops15h 30m
Deal found 31/10C$ 1,155
Sat 10/44:25 p.m. -
Nonstop8h 20m
Wed 21/46:50 a.m. -
1 stop11h 10m
Deal found 3/11C$ 1,296
Sun 22/117:10 p.m. -
2 stops20h 10m
Sun 13/126:40 a.m. -
2 stops22h 17m
Deal found 31/10C$ 1,222
Thu 3/125:45 p.m. -
Nonstop8h 10m
Sun 6/126:40 p.m. -
1 stop27h 35m
Deal found 2/11C$ 1,406
Thu 3/123:45 p.m. -
Nonstop8h 10m
Tue 8/129:00 a.m. -
1 stop13h 15m
Deal found 1/11C$ 1,336
Sun 3/19:50 p.m. -
Nonstop8h 10m
Wed 13/11:30 p.m. -
1 stop12h 35m
Deal found 31/10C$ 1,336
Tue 16/310:30 a.m. -
2 stops17h 50m
Sat 27/36:40 a.m. -
2 stops31h 53m
Deal found 3/11C$ 1,361
Wed 25/119:50 p.m. -
Nonstop8h 10m
Wed 2/121:45 p.m. -
1 stop32h 30m
Deal found 1/11C$ 1,336
Sun 13/121:55 p.m. -
1 stop11h 15m
Sun 20/121:35 p.m. -
Nonstop9h 20m
Deal found 31/10C$ 1,452
Direct flights from O'Hare Intl to Heathrow
Explore direct flight options from O'Hare Intl to Heathrow based on user searches, and compare prices and availability for your desired travel dates. Data last updated 5 November 2026.
Sun 14/29:50 p.m. -
Nonstop7h 45m
Fri 26/23:40 p.m. -
Nonstop9h 05m
Deal found 1/11C$ 1,268
Tue 2/35:10 p.m. -
Nonstop7h 45m
Thu 4/33:40 p.m. -
Nonstop9h 05m
Deal found 3/11C$ 1,269
Wed 3/35:10 p.m. -
Nonstop7h 45m
Wed 10/311:00 a.m. -
Nonstop8h 45m
Deal found 3/11C$ 1,271
Mon 26/47:25 p.m. -
Nonstop8h 10m
Tue 4/511:10 a.m. -
Nonstop8h 40m
Deal found 2/11C$ 1,274
Mon 22/36:10 p.m. -
Nonstop7h 45m
Thu 25/33:40 p.m. -
Nonstop9h 05m
Deal found 5/11C$ 1,275
Mon 29/35:00 p.m. -
Nonstop7h 50m
Wed 7/411:10 a.m. -
Nonstop8h 40m
Deal found 5/11C$ 1,282
Wed 17/310:50 p.m. -
Nonstop7h 45m
Thu 25/33:40 p.m. -
Nonstop9h 05m
Deal found 4/11C$ 1,290
Wed 2/125:45 p.m. -
Nonstop8h 10m
Fri 11/1210:25 a.m. -
Nonstop9h 20m
Deal found 2/11C$ 1,310
Mon 30/115:45 p.m. -
Nonstop8h 10m
Tue 8/1210:25 a.m. -
Nonstop9h 20m
Deal found 2/11C$ 1,311
Sun 29/119:50 p.m. -
Nonstop8h 10m
Tue 8/127:40 a.m. -
Nonstop9h 05m
Deal found 31/10C$ 1,313
Sun 7/35:45 p.m. -
Nonstop8h 10m
Wed 16/68:00 a.m. -
Nonstop9h 05m
Deal found 1/11C$ 1,322
Mon 25/15:10 p.m. -
Nonstop7h 45m
Tue 2/211:00 a.m. -
Nonstop8h 45m
Deal found 1/11C$ 1,335
Last-minute flights from O'Hare Intl to Heathrow
Discover last-minute flight deals from O'Hare Intl to Heathrow. Data last updated 5 November 2026 and is based on user searches.
Tue 17/117:10 p.m. -
2 stops15h 50m
Tue 24/117:05 a.m. -
2 stops15h 40m
Deal found 2/11C$ 1,079
Sun 22/117:10 p.m. -
2 stops32h 25m
Wed 25/116:40 a.m. -
1 stop16h 05m
Deal found 31/10C$ 986
Mon 23/117:10 p.m. -
2 stops32h 25m
Thu 26/116:40 a.m. -
1 stop16h 05m
Deal found 31/10C$ 1,028
Sun 29/117:10 p.m. -
2 stops17h 40m
Sun 13/126:40 a.m. -
1 stop16h 05m
Deal found 5/11C$ 1,071
Sun 29/117:10 p.m. -
1 stop16h 30m
Mon 7/126:40 a.m. -
2 stops16h 05m
Deal found 3/11C$ 1,075
Wed 2/127:10 p.m. -
1 stop17h 20m
Sun 13/126:40 a.m. -
1 stop16h 05m
Deal found 2/11C$ 1,084
Sat 5/127:10 p.m. -
2 stops44h 10m
Tue 8/127:05 a.m. -
2 stops39h 50m
Deal found 4/11C$ 964
Mon 7/127:10 p.m. -
1 stop17h 20m
Thu 10/126:40 a.m. -
1 stop16h 05m
Deal found 4/11C$ 1,085
Wed 9/127:10 p.m. -
2 stops15h 50m
Sun 13/126:40 a.m. -
1 stop16h 05m
Deal found 2/11C$ 1,074
Fri 11/127:10 p.m. -
1 stop17h 20m
Sun 13/129:55 a.m. -
2 stops36h 50m
Deal found 31/10C$ 1,054
Sat 12/127:10 p.m. -
2 stops39h 50m
Tue 15/1210:20 a.m. -
1 stop12h 25m
Deal found 3/11C$ 1,012
One-way flights from O'Hare Intl to Heathrow
Search for one-way flight options from O'Hare Intl to Heathrow. Find affordable one-way fares based on user searches. Data last updated 5 November 2026.
Sun 25/44:25 p.m. -
Nonstop8h 20m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 4/11C$ 461
Wed 3/310:36 a.m. -
1 stop14h 34m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 31/10C$ 465
Mon 1/212:29 p.m. -
2 stops15h 56m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 3/11C$ 466
Wed 24/31:00 p.m. -
2 stops13h 10m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 1/11C$ 472
Fri 13/118:10 p.m. -
1 stop20h 30m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 5/11C$ 483
Sun 22/118:10 p.m. -
1 stop19h 25m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 5/11C$ 505
Thu 29/48:50 a.m. -
1 stop15h 40m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 4/11C$ 514
Mon 29/37:05 p.m. -
2 stops15h 30m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 4/11C$ 515
Thu 4/29:50 p.m. -
Nonstop8h 10m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 4/11C$ 531
Thu 11/37:05 a.m. -
1 stop18h 05m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 1/11C$ 535
Thu 4/31:30 p.m. -
2 stops15h 20m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 2/11C$ 536
Find flight deals from O'Hare Intl to Heathrow
Discover tips and strategies to find the most affordable flight options for your journey from O'Hare Intl (ORD) to Heathrow (LHR). 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 5 November 2026.
Customize your flight search to find flights from O'Hare Intl to Heathrow 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 5 November 2026.
Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to London Heathrow Airport that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
Cheapest round-trip
Quickest round-trip
ChicagoLondon
ORD Chicago O'Hare Intl - LHR London Heathrow
ORDLHR
Chicago O'Hare Intl
Sat 24/4
7:25 p.m.-9:35 a.m.
Nonstop8h 10m
London Heathrow
Wed 31/12
12:00 a.m.-5:00 p.m.
Nonstop0h 00m
C$ 531
ChicagoLondon
ORD Chicago O'Hare Intl - LHR London Heathrow
ORDLHR
Chicago O'Hare Intl
Thu 4/3
1:30 p.m.-10:50 a.m.
2 stops15h 20m
London Heathrow
Wed 31/12
12:00 a.m.-5:00 p.m.
Nonstop0h 00m
C$ 536
ChicagoLondon
ORD Chicago O'Hare Intl - LHR London Heathrow
ORDLHR
Chicago O'Hare Intl
Sat 20/3
4:45 p.m.-5:55 a.m.
Nonstop8h 10m
London Heathrow
Wed 31/12
12:00 a.m.-5:00 p.m.
Nonstop0h 00m
C$ 616
ChicagoLondon
ORD Chicago O'Hare Intl - LHR London Heathrow
ORDLHR
Chicago O'Hare Intl
Fri 19/3
4:45 p.m.-5:55 a.m.
Nonstop8h 10m
London Heathrow
Wed 31/12
12:00 a.m.-5:00 p.m.
Nonstop0h 00m
C$ 761
ChicagoLondon
ORD Chicago O'Hare Intl - LHR London Heathrow
ORDLHR
Chicago O'Hare Intl
Tue 8/12
5:46 p.m.-5:30 p.m.
3 stops17h 44m
London Heathrow
Wed 31/12
12:00 a.m.-5:00 p.m.
Nonstop0h 00m
C$ 783
ChicagoLondon
ORD Chicago O'Hare Intl - LHR London Heathrow
ORDLHR
Chicago O'Hare Intl
Wed 6/1
12:00 p.m.-9:55 a.m.
2 stops15h 55m
London Heathrow
Wed 31/12
12:00 a.m.-5:00 p.m.
Nonstop0h 00m
C$ 786
ChicagoLondon
ORD Chicago O'Hare Intl - LHR London Heathrow
ORDLHR
Chicago O'Hare Intl
Thu 3/12
5:46 p.m.-11:25 a.m.
2 stops35h 39m
London Heathrow
Wed 31/12
12:00 a.m.-5:00 p.m.
Nonstop0h 00m
C$ 811
ChicagoLondon
ORD Chicago O'Hare Intl - LHR London Heathrow
ORDLHR
Chicago O'Hare Intl
Fri 1/1
9:00 a.m.-7:45 a.m.
2 stops16h 45m
London Heathrow
Wed 31/12
12:00 a.m.-5:00 p.m.
Nonstop0h 00m
C$ 856
ChicagoLondon
ORD Chicago O'Hare Intl - LHR London Heathrow
ORDLHR
Chicago O'Hare Intl
Sat 2/1
7:00 a.m.-7:20 a.m.
2 stops18h 20m
London Heathrow
Wed 31/12
12:00 a.m.-5:00 p.m.
Nonstop0h 00m
C$ 856
ChicagoLondon
ORD Chicago O'Hare Intl - LHR London Heathrow
ORDLHR
Chicago O'Hare Intl
Wed 16/12
7:00 a.m.-6:50 a.m.
2 stops17h 50m
London Heathrow
Wed 31/12
12:00 a.m.-5:00 p.m.
Nonstop0h 00m
C$ 874
Flights are sorted by cheapest round-trip flights first.
Deals found on 4/11
Showing 1-10 of 22 resultsSorted by cheapest first
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Best time to book a flight from O'Hare Intl to Heathrow
Have a flexible travel schedule? Discover the best time to fly to Heathrow from O'Hare Intl with our price prediction graph.
ORD-LHR
Estimated round-trip 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 Heathrow Airport
Prices
Airlines
Delays
How far ahead should I book a flight from Chicago O'Hare Intl Airport to London Heathrow Airport?
Booking 1 days in advance of your planned departure date is, on average, the best time to get cheap flights from Chicago O'Hare Intl Airport to London Heathrow Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
What is the cheapest month to book a flight from Chicago O'Hare Intl Airport to London Heathrow Airport?
Currently, January is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to London Heathrow Airport (average of C$ 912). Flying from Chicago O'Hare Intl Airport to London Heathrow Airport in June is currently the most expensive (average of C$ 1,924). 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 LHR?
Find hourly flight availability from O'Hare Intl to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 5 November 2026.
When flying from Chicago O'Hare Intl Airport to London Heathrow Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
How much does it cost to fly round-trip from Chicago O'Hare Intl Airport to London Heathrow Airport?
Airfare is below average for this route at the moment.
Chicago O'Hare Intl Airport to London Heathrow Airport flights typically cost between C$ 987 and C$ 1,624 in December.The cheapest round-trip price found within the last 5 days was C$ 964 on Scandinavian Airlines (5 Dec-8 Dec).
Weekly flight availability from Chicago O'Hare Intl Airport to London Heathrow Airport
Explore weekly flight availability from O'Hare Intl to Heathrow. 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 5 November 2026.
The most flights from ORD to LHR are scheduled on a Wednesday (42 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (36 on average).
How often are flights from Chicago to London delayed?
About 23% of weekly flights between Chicago and London have experienced delays in the past year, with the average delay time being 161 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 at night 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, American Airlines has had the lowest number of delays on this route, with just 22% of flights being delayed.
Related info for your journey
Find useful and relevant information for your journey from O'Hare Intl to Heathrow. 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 Heathrow Airport?
For as low as C$ 1,276, Scandinavian Airlines can have you in London Heathrow Airport from Chicago O'Hare Intl Airport in 7h 50m. The distance from Chicago O'Hare Intl Airport to London Heathrow Airport is about 6339 km. This flight may include one or multiple stops.
What are the most reliable airlines from Chicago O'Hare Intl Airport to London Heathrow Airport?
The top 3 most reliable airlines when flying from Chicago O'Hare Intl Airport to London Heathrow Airport are Royal Jordanian (88%), Air Canada (84%) and Austrian Airlines (84%).
Can I find deals for flights from O'Hare Intl to Heathrow that include hotel bookings?
Yes. In addition to deals on O'Hare Intl to Heathrow flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from O'Hare Intl to Heathrow?
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 Heathrow.
Can I find deals for business class flights from O'Hare Intl to Heathrow?
Yes. Cheapflights offers flight deals from O'Hare Intl to Heathrow 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 Heathrow Airport?
Currently, January is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to London Heathrow Airport (average of C$ 912). Flying from Chicago O'Hare Intl Airport to London Heathrow Airport in June is currently the most expensive (average of C$ 1,924). 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.
Explore flights to Heathrow departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 5 November 2026.
Browse through other flights departing from O'Hare Intl. Flights are based on user searches made on Cheapflights and were last updated on 5 November 2026.
Find the best flight deals on Cheapflights, where travelers 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 Heathrow?
Deals for O'Hare Intl to Heathrow flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.
Why should you use Cheapflights to find cheap flight tickets from O'Hare Intl to Heathrow?
Cheapflights simply makes it quick and affordable to book flights from O'Hare Intl to Heathrow by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.
Can Cheapflights find flights from O'Hare Intl to Heathrow with no change fees?
Certainly. Search results for flights to Heathrow from O'Hare Intl shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.
Can Cheapflights notify me if prices for flights from O'Hare Intl to Heathrow become cheaper?
Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!
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