Cheap flights from Chicago O'Hare Intl Airport to London Heathrow Airport from C$ 449
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 26/1. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — LHR
20 Oct — 27 Oct1
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 83 days in advance, depart on a Thursday or Tuesday and return on a Monday
Cheap flight deals from O'Hare Intl to Heathrow
Enter your travel dates to find the best prices.
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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 20 September 2026.
Tue 29/123:45 p.m. -
Nonstop8h 10m
Fri 15/11:35 p.m. -
Nonstop9h 20m
Deal found 18/9C$ 1,028
Sun 27/98:45 a.m. -
1 stop15h 45m
Tue 6/102:05 p.m. -
1 stop12h 07m
Deal found 20/9C$ 1,029
Tue 29/96:00 p.m. -
1 stop12h 05m
Wed 7/108:40 a.m. -
2 stops17h 50m
Deal found 16/9C$ 1,032
Tue 29/127:05 a.m. -
1 stop20h 50m
Fri 15/18:40 a.m. -
2 stops17h 57m
Deal found 20/9C$ 1,033
Tue 3/115:10 p.m. -
Nonstop7h 45m
Wed 11/1111:00 a.m. -
Nonstop8h 45m
Deal found 16/9C$ 1,035
Mon 28/94:25 p.m. -
Nonstop8h 20m
Thu 28/112:00 p.m. -
1 stop15h 30m
Deal found 16/9C$ 1,036
Sun 4/105:10 p.m. -
1 stop14h 35m
Fri 20/118:55 a.m. -
1 stop13h 20m
Deal found 19/9C$ 1,037
Sun 4/105:48 p.m. -
1 stop10h 32m
Tue 20/102:45 p.m. -
Nonstop8h 50m
Deal found 17/9C$ 1,039
Wed 30/95:00 p.m. -
Nonstop7h 50m
Tue 2/23:40 p.m. -
Nonstop9h 05m
Deal found 18/9C$ 1,040
Mon 28/911:30 a.m. -
1 stop12h 50m
Fri 29/111:35 a.m. -
1 stop14h 40m
Deal found 17/9C$ 1,042
Sun 27/98:05 a.m. -
1 stop17h 10m
Thu 28/18:55 a.m. -
1 stop13h 42m
Deal found 16/9C$ 1,043
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 20 September 2026.
Thu 11/35:10 p.m. -
Nonstop7h 45m
Thu 18/37:30 a.m. -
1 stop13h 25m
Deal found 19/9C$ 1,071
Tue 1/121:35 p.m. -
1 stop11h 40m
Mon 7/1211:45 a.m. -
2 stops14h 30m
Deal found 15/9C$ 1,103
Sat 10/104:25 p.m. -
Nonstop8h 20m
Sun 18/107:25 a.m. -
1 stop12h 40m
Deal found 15/9C$ 1,158
Thu 24/127:15 p.m. -
1 stop20h 25m
Wed 6/17:50 p.m. -
2 stops50h 55m
Deal found 16/9C$ 1,159
Wed 30/129:50 p.m. -
Nonstop7h 45m
Sun 10/110:15 a.m. -
1 stop12h 40m
Deal found 19/9C$ 1,179
Fri 30/108:15 p.m. -
2 stops31h 40m
Wed 4/117:05 a.m. -
2 stops15h 40m
Deal found 19/9C$ 1,166
Fri 16/104:25 p.m. -
Nonstop8h 20m
Sun 25/107:30 a.m. -
1 stop13h 50m
Deal found 17/9C$ 1,170
Fri 16/103:30 p.m. -
1 stop15h 35m
Mon 19/109:55 a.m. -
2 stops17h 36m
Deal found 19/9C$ 1,172
Sat 16/15:45 p.m. -
Nonstop8h 10m
Sat 30/19:00 a.m. -
1 stop13h 15m
Deal found 15/9C$ 1,201
Fri 9/107:15 p.m. -
2 stops31h 40m
Sat 14/115:00 p.m. -
1 stop29h 45m
Deal found 18/9C$ 1,204
Fri 20/117:45 p.m. -
1 stop32h 10m
Sat 28/1110:50 a.m. -
1 stop27h 51m
Deal found 19/9C$ 1,309
Wed 21/107:25 a.m. -
2 stops19h 55m
Thu 29/107:05 a.m. -
2 stops15h 40m
Deal found 15/9C$ 1,216
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 20 September 2026.
Tue 29/123:45 p.m. -
Nonstop8h 10m
Fri 15/11:35 p.m. -
Nonstop9h 20m
Deal found 18/9C$ 1,028
Tue 13/107:05 p.m. -
Nonstop8h 00m
Tue 20/101:10 p.m. -
Nonstop8h 45m
Deal found 19/9C$ 1,032
Tue 3/115:10 p.m. -
Nonstop7h 45m
Wed 11/1111:00 a.m. -
Nonstop8h 45m
Deal found 18/9C$ 1,033
Tue 3/115:10 p.m. -
Nonstop7h 45m
Thu 12/1111:00 a.m. -
Nonstop8h 45m
Deal found 16/9C$ 1,035
Sun 21/23:45 p.m. -
Nonstop8h 10m
Wed 3/37:40 a.m. -
Nonstop9h 05m
Deal found 19/9C$ 1,039
Wed 30/95:00 p.m. -
Nonstop7h 50m
Tue 2/23:40 p.m. -
Nonstop9h 05m
Deal found 18/9C$ 1,040
Mon 28/129:50 p.m. -
Nonstop8h 10m
Wed 27/17:40 a.m. -
Nonstop9h 05m
Deal found 16/9C$ 1,064
Sun 22/113:45 p.m. -
Nonstop8h 10m
Tue 12/17:40 a.m. -
Nonstop9h 05m
Deal found 19/9C$ 1,068
Mon 28/129:50 p.m. -
Nonstop7h 45m
Thu 14/111:00 a.m. -
Nonstop8h 45m
Deal found 18/9C$ 1,082
Wed 28/107:35 p.m. -
Nonstop8h 00m
Sun 1/113:40 p.m. -
Nonstop9h 05m
Deal found 16/9C$ 1,088
Fri 16/106:05 p.m. -
Nonstop8h 00m
Fri 23/109:45 a.m. -
Nonstop8h 45m
Deal found 19/9C$ 1,089
Thu 12/113:45 p.m. -
Nonstop8h 10m
Thu 19/1110:25 a.m. -
Nonstop9h 20m
Deal found 18/9C$ 1,091
Last-minute flights from O'Hare Intl to Heathrow
Discover last-minute flight deals from O'Hare Intl to Heathrow. Data last updated 20 September 2026 and is based on user searches.
Sun 27/96:35 p.m. -
Nonstop8h 25m
Fri 29/11:35 p.m. -
Nonstop9h 20m
Deal found 18/9C$ 1,028
Sun 27/98:45 a.m. -
1 stop15h 45m
Tue 6/102:05 p.m. -
1 stop12h 07m
Deal found 20/9C$ 1,029
Sun 27/91:55 p.m. -
1 stop11h 15m
Tue 6/109:55 a.m. -
2 stops16h 35m
Deal found 15/9C$ 1,033
Sun 27/98:05 a.m. -
1 stop17h 10m
Thu 28/18:55 a.m. -
1 stop13h 42m
Deal found 16/9C$ 1,043
Mon 28/94:25 p.m. -
Nonstop8h 20m
Thu 28/112:00 p.m. -
1 stop15h 30m
Deal found 16/9C$ 1,036
Mon 28/911:30 a.m. -
1 stop12h 50m
Thu 28/111:35 a.m. -
1 stop14h 40m
Deal found 17/9C$ 1,042
Tue 29/910:44 a.m. -
1 stop14h 31m
Fri 23/109:55 a.m. -
2 stops17h 36m
Deal found 17/9C$ 1,032
Wed 30/95:00 p.m. -
Nonstop7h 50m
Wed 27/111:00 a.m. -
Nonstop8h 45m
Deal found 17/9C$ 1,035
Wed 30/97:05 p.m. -
Nonstop8h 00m
Thu 28/13:40 p.m. -
Nonstop9h 05m
Deal found 18/9C$ 1,040
Sun 4/105:10 p.m. -
1 stop14h 35m
Fri 20/118:55 a.m. -
1 stop13h 20m
Deal found 19/9C$ 1,037
Sun 4/105:48 p.m. -
1 stop10h 32m
Tue 20/102:45 p.m. -
Nonstop8h 50m
Deal found 17/9C$ 1,039
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 20 September 2026.
Tue 26/16:30 p.m. -
1 stop10h 20m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 17/9C$ 449
Fri 16/1010:25 p.m. -
1 stop15h 55m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 15/9C$ 450
Sat 17/109:38 a.m. -
1 stop14h 52m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 16/9C$ 453
Wed 17/39:00 a.m. -
1 stop19h 20m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 16/9C$ 454
Mon 11/17:00 a.m. -
1 stop19h 25m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 16/9C$ 456
Sat 13/39:25 p.m. -
2 stops17h 55m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 17/9C$ 468
Sun 18/103:00 p.m. -
1 stop18h 40m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 20/9C$ 488
Tue 15/128:40 a.m. -
1 stop18h 40m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 16/9C$ 496
Wed 16/127:05 a.m. -
1 stop18h 05m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 16/9C$ 501
Wed 16/129:59 a.m. -
2 stops17h 56m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 17/9C$ 502
Sat 26/128:50 p.m. -
1 stop27h 40m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 15/9C$ 508
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 20 September 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 20 September 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
Wed 17/3
10:50 p.m.-11:35 a.m.
Nonstop7h 45m
London Heathrow
Wed 31/12
12:00 a.m.-5:00 p.m.
Nonstop0h 00m
C$ 454
ChicagoLondon
ORD Chicago O'Hare Intl - LHR London Heathrow
ORDLHR
Chicago O'Hare Intl
Mon 1/3
5:45 p.m.-7:55 a.m.
Nonstop8h 10m
London Heathrow
Wed 31/12
12:00 a.m.-5:00 p.m.
Nonstop0h 00m
C$ 454
ChicagoLondon
ORD Chicago O'Hare Intl - LHR London Heathrow
ORDLHR
Chicago O'Hare Intl
Tue 16/3
10:50 p.m.-11:35 a.m.
Nonstop7h 45m
London Heathrow
Wed 31/12
12:00 a.m.-5:00 p.m.
Nonstop0h 00m
C$ 454
ChicagoLondon
ORD Chicago O'Hare Intl - LHR London Heathrow
ORDLHR
Chicago O'Hare Intl
Mon 15/3
10:50 p.m.-11:35 a.m.
Nonstop7h 45m
London Heathrow
Wed 31/12
12:00 a.m.-5:00 p.m.
Nonstop0h 00m
C$ 454
ChicagoLondon
ORD Chicago O'Hare Intl - LHR London Heathrow
ORDLHR
Chicago O'Hare Intl
Wed 30/12
2:25 p.m.-10:50 a.m.
2 stops14h 25m
London Heathrow
Wed 31/12
12:00 a.m.-5:00 p.m.
Nonstop0h 00m
C$ 460
ChicagoLondon
ORD Chicago O'Hare Intl - LHR London Heathrow
ORDLHR
Chicago O'Hare Intl
Thu 11/3
5:45 p.m.-7:55 a.m.
Nonstop8h 10m
London Heathrow
Wed 31/12
12:00 a.m.-5:00 p.m.
Nonstop0h 00m
C$ 524
ChicagoLondon
ORD Chicago O'Hare Intl - LHR London Heathrow
ORDLHR
Chicago O'Hare Intl
Sat 13/3
5:10 p.m.-6:55 a.m.
Nonstop7h 45m
London Heathrow
Wed 31/12
12:00 a.m.-5:00 p.m.
Nonstop0h 00m
C$ 524
ChicagoLondon
ORD Chicago O'Hare Intl - LHR London Heathrow
ORDLHR
Chicago O'Hare Intl
Thu 11/3
7:00 a.m.-6:20 a.m.
2 stops17h 20m
London Heathrow
Wed 31/12
12:00 a.m.-5:00 p.m.
Nonstop0h 00m
C$ 530
ChicagoLondon
ORD Chicago O'Hare Intl - LHR London Heathrow
ORDLHR
Chicago O'Hare Intl
Fri 12/3
5:10 p.m.-6:55 a.m.
Nonstop7h 45m
London Heathrow
Wed 31/12
12:00 a.m.-5:00 p.m.
Nonstop0h 00m
C$ 545
ChicagoLondon
ORD Chicago O'Hare Intl - LHR London Heathrow
ORDLHR
Chicago O'Hare Intl
Wed 14/10
8:36 a.m.-9:15 a.m.
2 stops18h 39m
London Heathrow
Wed 31/12
12:00 a.m.-5:00 p.m.
Nonstop0h 00m
C$ 712
Flights are sorted by cheapest round-trip flights first.
Deals found on 20/9
Showing 1-10 of 24 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 82 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$ 900). Flying from Chicago O'Hare Intl Airport to London Heathrow Airport in June is currently the most expensive (average of C$ 1,922). 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 20 September 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$ 1,062 and C$ 1,442 in December.The cheapest round-trip price found within the last 5 days was C$ 1,028 on United Airlines (29 Dec-15 Jan).
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 20 September 2026.
The most flights from ORD to LHR are scheduled on a Friday (54 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (39 on average).
How often are flights from Chicago to London delayed?
About 24% of weekly flights between Chicago and London have experienced delays in the past year, with the average delay time being 164 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, British Airways has had the lowest number of delays on this route, with just 23% 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$ 1,078, United Airlines can have you in London Heathrow Airport from Chicago O'Hare Intl Airport in 8h 10m. The distance from Chicago O'Hare Intl Airport to London Heathrow Airport is about 6339 km. All flights are typically direct.
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 (73%), Malaysia Airlines (68%) and Air Canada (66%).
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$ 900). Flying from Chicago O'Hare Intl Airport to London Heathrow Airport in June is currently the most expensive (average of C$ 1,922). 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 20 September 2026.
Browse through other flights departing from O'Hare Intl. Flights are based on user searches made on Cheapflights and were last updated on 20 September 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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