Cheap flights from Chicago O'Hare Intl Airport to London Heathrow Airport from £178
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 14/11. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — LHR
14 Nov — 21 Nov1
Return
1 adult
Economy
Return
1 adult, Economy
Cheapflights Tip: The best prices from Chicago O'Hare Intl to London Heathrow are usually found in February or April, booked 55 days in advance, depart on a Thursday or Sunday and return on a Wednesday
Find flight deals from O'Hare Intl to Heathrow
Enter your travel dates to find the best prices.
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 15 October 2025.
Tue 18/1118:30ORD - LHR
1 stop10h 20mIcelandair
Fri 5/1212:15LHR - ORD
1 stop11h 05mIcelandair
Deal found 12/10£394
Mon 29/1218:30ORD - LHR
1 stop10h 20mIcelandair
Fri 9/112:15LHR - ORD
1 stop11h 05mIcelandair
Deal found 13/10£395
Sun 16/1118:30ORD - LHR
1 stop10h 20mIcelandair
Wed 3/1220:35LHR - ORD
1 stop26h 45mIcelandair
Deal found 12/10£396
Wed 31/1218:30ORD - LHR
1 stop19h 00mIcelandair
Thu 15/112:15LHR - ORD
1 stop11h 05mIcelandair
Deal found 14/10£397
Sat 29/1119:20ORD - LHR
1 stop17h 10mScandinavian Airlines
Mon 1/1218:05LHR - ORD
2 stops52h 40mScandinavian Airlines
Deal found 13/10£397
Thu 13/1119:20ORD - LHR
1 stop32h 00mScandinavian Airlines
Sun 16/1106:40LHR - ORD
2 stops16h 05mScandinavian Airlines
Deal found 13/10£400
Sun 26/1015:50ORD - LHR
1 stop10h 15mVirgin Atlantic
Tue 4/1106:20LHR - ORD
1 stop14h 50mVirgin Atlantic
Deal found 13/10£402
Tue 4/1118:30ORD - LHR
1 stop10h 20mIcelandair
Fri 14/1112:15LHR - ORD
1 stop11h 05mIcelandair
Deal found 14/10£403
Fri 7/1119:20ORD - LHR
2 stops15h 05mScandinavian Airlines
Sun 9/1110:20LHR - ORD
1 stop12h 25mScandinavian Airlines
Deal found 14/10£405
Wed 31/1219:20ORD - LHR
1 stop16h 20mScandinavian Airlines
Thu 15/110:20LHR - ORD
1 stop12h 25mScandinavian Airlines
Deal found 13/10£409
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 stopovers in mind to ensure you get the best travel experience. Data last updated 15 October 2025.
Tue 3/207:00ORD - LHR
2 stops20h 20mScandinavian Airlines
Tue 10/219:50LHR - ORD
2 stops26h 55mScandinavian Airlines
Deal found 13/10£409
Wed 3/1219:10ORD - LHR
1 stop10h 15mDelta
Wed 24/1208:55LHR - ORD
1 stop12h 15mDelta
Deal found 12/10£434
Mon 3/1108:57ORD - LHR
1 stop16h 08mVirgin Atlantic
Fri 14/1109:00LHR - ORD
1 stop12h 10mVirgin Atlantic
Deal found 13/10£437
Tue 25/1117:10ORD - LHR
Nonstop7h 45mBritish Airways
Thu 12/211:00LHR - ORD
Nonstop8h 50mBritish Airways
Deal found 13/10£440
Tue 18/1117:50ORD - LHR
Nonstop8h 05mUnited Airlines
Mon 24/1116:40LHR - ORD
1 stop27h 30mUnited Airlines
Deal found 13/10£461
Mon 27/1007:05ORD - LHR
2 stops21h 15mScandinavian Airlines
Mon 3/1107:05LHR - ORD
2 stops15h 40mScandinavian Airlines
Deal found 13/10£432
Sun 30/1121:45ORD - LHR
Nonstop7h 50mBritish Airways
Fri 13/215:45LHR - ORD
Nonstop9h 00mBritish Airways
Deal found 13/10£440
Tue 4/1111:23ORD - LHR
1 stop14h 27mDelta
Tue 25/1106:20LHR - ORD
2 stops16h 04mDelta
Deal found 14/10£445
Mon 10/1117:50ORD - LHR
Nonstop8h 05mUnited Airlines
Mon 17/1116:40LHR - ORD
1 stop27h 30mUnited Airlines
Deal found 12/10£461
Tue 25/1113:14ORD - LHR
1 stop11h 11mDelta
Thu 4/1208:40LHR - ORD
2 stops17h 15mDelta
Deal found 13/10£446
Mon 27/1011:23ORD - LHR
1 stop19h 17mDelta
Mon 3/1117:35LHR - ORD
1 stop27h 35mDelta
Deal found 14/10£447
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 15 October 2025.
Thu 27/1121:45ORD - LHR
Nonstop7h 50mBritish Airways
Thu 4/1215:45LHR - ORD
Nonstop9h 00mBritish Airways
Deal found 12/10£425
Sun 16/1120:40ORD - LHR
Nonstop7h 45mFinnair
Tue 25/1114:10LHR - ORD
Nonstop8h 50mFinnair
Deal found 13/10£431
Wed 12/1118:30ORD - LHR
Nonstop7h 45mFinnair
Thu 20/1114:10LHR - ORD
Nonstop8h 50mFinnair
Deal found 14/10£432
Sun 26/1021:45ORD - LHR
Nonstop7h 40mBritish Airways
Tue 4/1115:45LHR - ORD
Nonstop9h 00mBritish Airways
Deal found 13/10£433
Wed 12/1120:40ORD - LHR
Nonstop7h 45mFinnair
Wed 19/1112:35LHR - ORD
Nonstop8h 50mFinnair
Deal found 14/10£434
Wed 12/1120:40ORD - LHR
Nonstop7h 45mIberia
Wed 19/1114:10LHR - ORD
Nonstop8h 50mIberia
Deal found 12/10£435
Wed 14/117:10ORD - LHR
Nonstop7h 45mFinnair
Wed 21/114:10LHR - ORD
Nonstop8h 50mFinnair
Deal found 13/10£437
Sun 26/1021:45ORD - LHR
Nonstop7h 40mAmerican Airlines
Tue 4/1115:45LHR - ORD
Nonstop9h 00mAmerican Airlines
Deal found 14/10£439
Tue 11/1118:30ORD - LHR
Nonstop7h 45mBritish Airways
Tue 18/1115:45LHR - ORD
Nonstop9h 00mBritish Airways
Deal found 14/10£440
Sun 11/118:45ORD - LHR
Nonstop7h 50mBritish Airways
Thu 5/214:10LHR - ORD
Nonstop8h 50mBritish Airways
Deal found 14/10£441
Last-minute flights from O'Hare Intl to Heathrow
Discover last-minute flight deals from O'Hare Intl to Heathrow. Data last updated 15 October 2025 and is based on user searches.
Sun 19/1018:00ORD - LHR
1 stop22h 55mTAP AIR PORTUGAL
Tue 4/1118:30LHR - ORD
1 stop26h 30mTAP AIR PORTUGAL
Deal found 12/10£418
Sun 19/1021:15ORD - LHR
1 stop10h 40mAer Lingus
Wed 22/1012:00LHR - ORD
1 stop13h 00mAer Lingus
Deal found 14/10£421
Sun 19/1021:15ORD - LHR
1 stop10h 40mAer Lingus
Tue 4/1108:50LHR - ORD
1 stop11h 10mAer Lingus
Deal found 14/10£425
Sun 19/1021:15ORD - LHR
Nonstop7h 50mBritish Airways
Tue 4/1111:00LHR - ORD
Nonstop8h 50mBritish Airways
Deal found 14/10£435
Mon 20/1021:15ORD - LHR
1 stop10h 40mAer Lingus
Wed 22/1008:50LHR - ORD
1 stop11h 10mAer Lingus
Deal found 12/10£425
Mon 20/1016:05ORD - LHR
1 stop13h 05mVirgin Atlantic
Wed 29/1009:00LHR - ORD
1 stop12h 10mVirgin Atlantic
Deal found 12/10£428
Mon 20/1021:40ORD - LHR
1 stop12h 00mLufthansa
Wed 29/1011:10LHR - ORD
1 stop13h 15mLufthansa
Deal found 12/10£434
Tue 21/1021:40ORD - LHR
1 stop12h 00mLufthansa
Tue 28/1008:45LHR - ORD
1 stop15h 40mLufthansa
Deal found 12/10£436
Wed 22/1021:15ORD - LHR
1 stop10h 10mAer Lingus
Wed 5/1112:10LHR - ORD
1 stop11h 45mAer Lingus
Deal found 13/10£418
Wed 22/1019:05ORD - LHR
1 stop11h 55mSWISS
Wed 29/1018:40LHR - ORD
1 stop27h 40mSWISS
Deal found 12/10£432
Wed 22/1013:08ORD - LHR
1 stop14h 52mDelta
Wed 29/1006:20LHR - ORD
1 stop14h 50mDelta
Deal found 14/10£437
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 15 October 2025.
Fri 14/1120:15ORD - LHR
1 stop15h 15mTAP AIR PORTUGAL
Deal found 14/10£178
Mon 10/1114:31ORD - LHR
2 stops26h 09mMultiple Airlines
Deal found 13/10£179
Sun 16/1120:25ORD - LHR
1 stop15h 05mTAP AIR PORTUGAL
Deal found 14/10£181
Fri 7/1112:17ORD - LHR
2 stops24h 38mMultiple Airlines
Deal found 13/10£183
Wed 12/1114:31ORD - LHR
2 stops20h 59mMultiple Airlines
Deal found 13/10£184
Sat 8/1106:30ORD - LHR
2 stops34h 10mMultiple Airlines
Deal found 13/10£185
Tue 18/1106:48ORD - LHR
3 stops28h 42mMultiple Airlines
Deal found 13/10£188
Sun 26/1021:25ORD - LHR
1 stop19h 10mTAP AIR PORTUGAL
Deal found 13/10£192
Wed 14/108:00ORD - LHR
3 stops22h 50mMultiple Airlines
Deal found 14/10£192
Cheap 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 15 October 2025.
Customise 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 858,174 searches. Data last updated 15 October 2025.
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
O'Hare Intl
Fly to
Heathrow
Route
Depart
Return
Price
ChicagoLondon
ORD - LHR
ORDLHR
Chicago O'Hare Intl
Tue 3/2
07:00-09:20
2 stops20h 20m
London Heathrow
Tue 10/2
19:50-16:45
2 stops26h 55m
£409
ChicagoLondon
ORD - LHR
ORDLHR
Chicago O'Hare Intl
Mon 27/10
07:05-09:20
2 stops21h 15m
London Heathrow
Mon 3/11
07:05-16:45
2 stops15h 40m
£432
ChicagoLondon
ORD - LHR
ORDLHR
Chicago O'Hare Intl
Wed 3/12
19:10-11:25
1 stop10h 15m
London Heathrow
Wed 24/12
08:55-15:10
1 stop12h 15m
£434
ChicagoLondon
ORD - LHR
ORDLHR
Chicago O'Hare Intl
Mon 3/11
08:57-07:05
1 stop16h 08m
London Heathrow
Fri 14/11
09:00-15:10
1 stop12h 10m
£437
ChicagoLondon
ORD - LHR
ORDLHR
Chicago O'Hare Intl
Tue 25/11
17:10-06:55
Nonstop7h 45m
London Heathrow
Thu 12/2
11:00-13:50
Nonstop8h 50m
£440
ChicagoLondon
ORD - LHR
ORDLHR
Chicago O'Hare Intl
Sun 30/11
21:45-11:35
Nonstop7h 50m
London Heathrow
Fri 13/2
15:45-18:45
Nonstop9h 00m
£440
ChicagoLondon
ORD - LHR
ORDLHR
Chicago O'Hare Intl
Tue 4/11
11:23-07:50
1 stop14h 27m
London Heathrow
Tue 25/11
06:20-16:24
2 stops16h 04m
£445
ChicagoLondon
ORD - LHR
ORDLHR
Chicago O'Hare Intl
Tue 25/11
13:14-06:25
1 stop11h 11m
London Heathrow
Thu 4/12
08:40-19:55
2 stops17h 15m
£446
ChicagoLondon
ORD - LHR
ORDLHR
Chicago O'Hare Intl
Mon 27/10
11:23-11:40
1 stop19h 17m
London Heathrow
Mon 3/11
17:35-15:10
1 stop27h 35m
£447
ChicagoLondon
ORD - LHR
ORDLHR
Chicago O'Hare Intl
Tue 18/11
17:50-07:55
Nonstop8h 05m
London Heathrow
Mon 24/11
16:40-14:10
1 stop27h 30m
£461
Flights are sorted by cheapest return flights first.
Deals found on 12/10
Showing 1-10 of 19 results
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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.
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 Heathrow Airport
Prices
Airlines
More
How far ahead should I book a flight from Chicago O'Hare Intl Airport to London Heathrow Airport?
Use this chart to determine the optimal time to book a return flight from O'Hare Intl to Heathrow. Price data was last updated on 10 October 2025.
The best time to book flights from Chicago O'Hare Intl Airport to London Heathrow Airport is 55 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.
What is the cheapest month to book a flight from Chicago O'Hare Intl Airport to London Heathrow Airport?
Currently, May is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to London Heathrow Airport (average of £294). Flying from Chicago O'Hare Intl Airport to London Heathrow Airport in June is currently the most expensive (average of £676). 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 15 October 2025.
Unlike in the morning, when flights are generally more expensive, you can save up to 20% on flights from Chicago O'Hare Intl Airport to London Heathrow Airport by exploring options for tickets in the afternoon.
How much does it cost for a return flight from Chicago O'Hare Intl Airport to London Heathrow Airport?
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 15 October 2025.
The most flights from ORD to LHR are scheduled on a Monday (57 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (51 on average).
What’s the top stopover airport for flights from Chicago O'Hare Intl Airport to London Heathrow Airport?
Share of one-stop return flights from Chicago O'Hare Intl Airport to London Heathrow Airport chosen by Cheapflights users in the past 12 months, using the same stopover each way.
Dublin (DUB) – chosen by Cheapflights users on 37% of one-stop itineraries from Chicago O'Hare Intl Airport to London Heathrow Airport on Cheapflights.
What’s the fastest stopover option from Chicago O'Hare Intl Airport to London Heathrow Airport?
Shortest average travel time for one-stop one-way flights from Chicago O'Hare Intl Airport to London Heathrow Airport, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.
Flights via Dublin (DUB) have the shortest average one-way travel time for one-stop routes: 10h 12m.
What’s the fastest stopover option from Chicago O'Hare Intl Airport to London Heathrow Airport?
Shortest average travel time for one-stop one-way flights from Chicago O'Hare Intl Airport to London Heathrow Airport, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.
Flights via Dublin (DUB) have the shortest average one-way travel time for one-stop routes: 10h 12m.
Which airport typically offers the quickest stopover for flights from Chicago O'Hare Intl Airport to London Heathrow Airport?
Average stopover duration for one-stop one-way flights from Chicago O'Hare Intl Airport to London Heathrow Airport, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via Helsinki (HEL) offer the fastest connection on this route, with an average stopover time of 1h 28m.
Reviews of airlines servicing Heathrow
Get insights into the airlines that provide service to Heathrow. 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 Heathrow. Reviews last updated 15 October 2025.
Read through reviews of airlines operating flights from Chicago O'Hare Intl Airport to London Heathrow Airport, such as Finnair, Aer Lingus, andIberia. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
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?
Departing from Chicago O'Hare Intl Airport to London Heathrow Airport will take you 10h 15m. Chicago O'Hare Intl Airport and London Heathrow Airport are separated by a distance of 3939 mi. This flight may include one or multiple stops.
What are the cheapest airlines flying from Chicago O'Hare Intl Airport to London Heathrow Airport round-trip?
Currently priced at £361, Lufthansa will fly you from Chicago O'Hare Intl Airport to London Heathrow Airport and back. In addition to Lufthansa, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from American Airlines and Finnair - these airlines can fly you to your destination from £389 and £418, respectively. Lufthansa is currently priced 39% below the average price you’ll pay for this route.
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 (76%), Aer Lingus (73%) and American Airlines (71%).
What are the cheapest flights from Chicago O'Hare Intl Airport to London Heathrow Airport?
The cheapest flight price from Chicago O'Hare Intl Airport to London Heathrow Airport is £286. On average you can expect to pay £400. The most popular route, (Chicago O'Hare Intl - London Heathrow), can usually be booked for £322.
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, May is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to London Heathrow Airport (average of £294). Flying from Chicago O'Hare Intl Airport to London Heathrow Airport in June is currently the most expensive (average of £676). 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 15 October 2025.
Top 7 airlines flying from O'Hare Intl to Heathrow
Discover the top 7 airlines that operate flights from O'Hare Intl to Heathrow. 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 15 October 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 Heathrow?
Cheapflights helps you search for flights from O'Hare Intl to Heathrow 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 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?
Users can book flights with no change fees policies with our dedicated filters. Book flights from O'Hare Intl to Heathrow flexibly with Cheapflights today.
Can Cheapflights notify me if prices for flights from O'Hare Intl to Heathrow become cheaper?
Of course! You can now track prices for flights from O'Hare Intl to Heathrow and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.
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