What’s the fastest stopover option from Chicago O'Hare Intl Airport to London Heathrow Airport?

Flights via Dublin (DUB) have the shortest average one-way travel time for one-stop routes: 10h 12m.

What’s the top stopover airport for flights from Chicago O'Hare Intl Airport to London Heathrow Airport?

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 cheapest stopover airport for flights from Chicago O'Hare Intl Airport to London Heathrow Airport?

New York (JFK) is the most affordable one-stop option, with an average return flight price of £469.

Which airport typically offers the quickest stopover for flights from Chicago O'Hare Intl Airport to London Heathrow Airport?

Flights via Helsinki (HEL) offer the fastest connection on this route, with an average stopover time of 1h 28m.

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.

Weekly flight availability from Chicago O'Hare Intl Airport to London Heathrow Airport

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).

In terms of precipitation, rainfall in London Heathrow Airport ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London Heathrow Airport when rainfall is around 40.0 mm.

If weather is an important factor for your trip to London Heathrow Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

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.

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 most popular airlines that fly from Chicago O'Hare Intl Airport to London Heathrow Airport?

The most popular airlines flying from Chicago O'Hare Intl Airport to London Heathrow Airport are British Airways, Iberia and Finnair. Something to consider prior to booking your flight.

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 holiday 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.

£178+ Cheap Flights from Chicago O'Hare Intl Airport to London Heathrow Airport

Q: How much does it cost for a return flight 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 £483 and £653 in November. The cheapest return flight price found within the last 3 days was £394 on Icelandair (18 Nov-5 Dec).

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

Round-trip from	£394
One-way from	£178
Popular in	June
Cheapest in	February
Average price	£522
Good round-trip deal	£427 or less
Good one-way deal	£296 or less

Icelandair
18/11-5/12
2 total stops
21h 25m total
Chicago to London

Search Deals

TAP AIR PORTUGAL
14/11
1 total stop
15h 15m total
Chicago to London

Search Deals

Highest demand for flights based on searches. 20% potential increase in price (£114 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 5% potential price decrease (£24 potential savings vs. average return price).

Search Deals

Average for round-trip flights in October 2025

Search Deals

Price to beat on a round-trip flight from Chicago O'Hare Intl to London Heathrow.

Search Deals

Price to beat on a one-way flight from Chicago O'Hare Intl to London Heathrow.

Search Deals

Cheapflights Fare Finder

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

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

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

How far ahead should I book a flight from Chicago O'Hare Intl Airport to London Heathrow Airport?

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?

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?

Reviews of airlines servicing Heathrow

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.

Finnair

7.6

Good

1,332 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2025

FRA - DFW

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.

Finnair

7.6

Good

1,332 reviews

Finnair

7.6

Good

1,332 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2025

FRA - DFW

Aer Lingus

7.2

Good

1,336 reviews

Finnair

7.6

Good

1,332 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2025

FRA - DFW

Iberia

7.0

Good

2,990 reviews

Finnair

7.6

Good

1,332 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2025

FRA - DFW

Lufthansa

6.8

Okay

7,487 reviews

Finnair

7.6

Good

1,332 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2025

FRA - DFW

British Airways

6.7

Okay

7,456 reviews

Finnair

7.6

Good

1,332 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2025

FRA - DFW

Related info for your journey

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 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 holiday 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, 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.

See more FAQs

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Croydon

Slough

Gatwick

Hounslow

Northampton

Luton

Wembley

Deal

Ilford

Crawley

Hayes

Watford

Winchester

Swindon

Chichester

Romford

Ipswich

Brentford

Dartford

Browse thousands of different options on Cheapflights for your next trip

Top 7 airlines flying from O'Hare Intl to Heathrow

Airline	Cheapest	Average	Flexibility	On-time
Lufthansa	Cheapest£361	Average£528	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
American Airlines	Cheapest£389	Average£634	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights
Finnair	Cheapest£418	Average£680	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
Iberia	Cheapest£450	Average£535	FlexibilityNo cancel fee	On-time77%	Search Iberia flights
British Airways	Cheapest£454	Average£568	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
United Airlines	Cheapest£466	Average£622	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Aer Lingus	Cheapest£498	Average£610	FlexibilityNo cancel fee	On-timeN/A	Search Aer Lingus flights

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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.

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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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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.

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

Cheapest flights from O'Hare Intl to HeathrowExplore 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.

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.

Cheap flight deals from O'Hare Intl to Heathrow

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Cheapflights Fare Finder

Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to London Heathrow Airport that are best for you.

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.

Cheapflights Insights

Everything you need to know about your flight from Chicago O'Hare Intl Airport to London Heathrow Airport

How far ahead should I book a flight from Chicago O'Hare Intl Airport to London Heathrow Airport?

What is the cheapest month to book a flight from Chicago O'Hare Intl Airport to London Heathrow Airport?

What is the cheapest time of day to fly from ORD to LHR?

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

What’s the top stopover airport for flights from Chicago O'Hare Intl Airport to London Heathrow Airport?

What’s the fastest stopover option from Chicago O'Hare Intl Airport to London Heathrow Airport?

What’s the fastest stopover option from Chicago O'Hare Intl Airport to London Heathrow Airport?

Which airport typically offers the quickest stopover for flights from Chicago O'Hare Intl Airport to London Heathrow Airport?

Reviews of airlines servicing Heathrow

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.

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?

What are the cheapest airlines flying from Chicago O'Hare Intl Airport to London Heathrow Airport round-trip?

What are the most reliable airlines from Chicago O'Hare Intl Airport to London Heathrow Airport?

What are the cheapest flights from Chicago O'Hare Intl Airport to London Heathrow Airport?

Can I find deals for flights from O'Hare Intl to Heathrow that include hotel bookings?

How can I find direct flights from O'Hare Intl to Heathrow?

Can I find deals for business class flights from O'Hare Intl to Heathrow?

What is the cheapest month to book a flight from Chicago O'Hare Intl Airport to London Heathrow Airport?

Travelling to a place near London Heathrow Airport?

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Alternative routes for O'Hare Intl to Heathrow

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Top 7 airlines flying 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 15 October 2025.