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

According to our current data, Scandinavian Airlines (£455), Icelandair (£457), and Air Canada (£459) offers the cheapest pricing from Chicago O'Hare Intl Airport to London. Users have found that Scandinavian Airlines is 23% cheaper than the other options available to this destination.

What are the cheapest airlines to fly from Chicago O'Hare Intl Airport to London one-way?

The cheapest airline one-way is Icelandair, with whom users have recently found tickets for as low as £203. However, be on the lookout for offers from TAP AIR PORTUGAL and JetBlue, as they are both options that can get you from Chicago O'Hare Intl Airport to London for a low price.

What is the cheapest day to fly from Chicago O'Hare Intl Airport to London?

Travellers seeking maximum savings on their Chicago O'Hare Intl Airport to London flight should consider departing on Wednesday mornings when fares are most often at their lowest. Saturday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

What are the most popular routes from Chicago O'Hare Intl Airport to London?

The most popular flight routes from Chicago O'Hare Intl Airport to London are Chicago O'Hare Intl - London Heathrow, Chicago O'Hare Intl - London Gatwick and Chicago O'Hare Intl - London City.

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

Looking for the cheapest flight from Chicago O'Hare Intl Airport to London? While on average our users pay £3,169, our data indicates the cheapest price to be £286. The most popular route (Chicago O'Hare Intl - London Heathrow), is priced around £349.

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

No one likes to see their flight delayed. When booking a flight from Chicago O'Hare Intl Airport to London consider choosing Royal Jordanian (87%), Air Canada (80%) or Austrian Airlines (80%) as they are the most reliable in getting you off to your destination on time.

What are the most popular airlines that fly from Chicago O'Hare Intl Airport to London?

When booking a flight from Chicago O'Hare Intl Airport to London, you may want to consider flying on American Airlines, Finnair or British Airways as they are the most popular for this route.

What is the cheapest day to fly round-trip from Chicago O'Hare Intl Airport to London?

Flights from Chicago O'Hare Intl Airport to London are found to be more expensive on Saturday. This shouldn't discourage you from searching as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to London.

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

To save up to 7% on this flight, we recommend booking at least 49 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Chicago O'Hare Intl Airport to London from £547 1-2 weeks out and tickets from £552 for flights departing within the next 72 hours.

What is the cheapest month to fly from Chicago O'Hare Intl Airport to London?

Our data shows that February tends to be the cheapest month to fly to London from Chicago O'Hare Intl Airport. Users have commonly found prices around £584 for the month, but tickets can be as low as £366. Due to multiple factors, prepare for potentially higher prices in June.

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

Yes. In addition to deals on O'Hare Intl to London flights, Cheapflights offers holiday packages that include both flights and hotel.

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

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 London.

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

Yes. Cheapflights offers flight deals from O'Hare Intl to London by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

£203+ Flights from Chicago O'Hare Intl Airport to London

Cheapflights Tip: The best prices from Chicago O'Hare Intl to London are usually found in February or April, booked 48 days in advance, depart on a Wednesday or Monday and return on a Wednesday

Cheap flight deals from O'Hare Intl to London

Round-trip from	£455
One-way from	£203
Popular in	June
Cheapest in	February
Average price	£557
Good round-trip deal	£531 or less
Good one-way deal	£316 or less

Scandinavian Airlines
9/5-16/5
3 total stops
27h 25m total
Chicago to London

Search Deals

Icelandair
4/5
1 total stop
31h 30m total
Chicago to London

Search Deals

Highest demand for flights based on searches. 18% potential increase in price (£101 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease (£17 potential savings vs. average return price).

Search Deals

Average for round-trip flights in March 2025

Search Deals

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

Search Deals

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

Search Deals

Find flight deals from O'Hare Intl to London

Cheapest flights from O'Hare Intl to London
Explore the most affordable flight options available from O'Hare Intl to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 26 March 2025.

Fri 9/519:15ORD - LHR

1 stop12h 20mScandinavian Airlines

Fri 16/507:05LHR - ORD

2 stops15h 05mScandinavian Airlines

Deal found 25/3£455

Wed 7/505:51ORD - LGW

2 stops19h 04mMultiple Airlines

Wed 14/514:00LGW - ORD

2 stops24h 55mMultiple Airlines

Deal found 24/3£455

Wed 8/1018:00ORD - LHR

1 stop12h 45mTAP AIR PORTUGAL

Wed 15/1013:45LHR - ORD

1 stop28h 50mTAP AIR PORTUGAL

Deal found 25/3£457

Fri 3/1022:15ORD - LGW

1 stop10h 25mIcelandair

Sun 12/1015:40LGW - ORD

1 stop11h 35mIcelandair

Deal found 25/3£457

Tue 22/416:00ORD - LHR

1 stop13h 50mAir Canada

Sun 27/417:40LHR - ORD

1 stop21h 15mAir Canada

Deal found 24/3£459

Fri 25/422:15ORD - LHR

1 stop16h 05mIcelandair

Sun 27/421:25LHR - ORD

1 stop26h 50mIcelandair

Deal found 25/3£460

Thu 1/519:15ORD - STN

2 stops21h 10mMultiple Airlines

Wed 7/514:50STN - ORD

2 stops31h 20mMultiple Airlines

Deal found 24/3£465

Wed 16/422:20ORD - LHR

Nonstop7h 55mIberia

Wed 23/412:30LHR - ORD

1 stop13h 31mIberia

Deal found 24/3£468

Tue 22/421:30ORD - LHR

1 stop13h 35mFinnair

Wed 30/409:30LHR - ORD

1 stop14h 20mFinnair

Deal found 24/3£469

Tue 6/515:45ORD - LHR

1 stop10h 15mAer Lingus

Tue 13/513:25LHR - ORD

1 stop11h 35mAer Lingus

Deal found 24/3£470

Wed 23/414:05ORD - LHR

1 stop13h 30mMultiple Airlines

Mon 28/417:10LHR - ORD

1 stop25h 00mMultiple Airlines

Deal found 24/3£473

Wed 30/418:05ORD - LHR

Nonstop8h 15mUnited Airlines

Mon 19/512:10LHR - ORD

1 stop33h 45mUnited Airlines

Deal found 24/3£480

Best flights from O'Hare Intl to London
Discover carefully curated flight deals from O'Hare Intl to London that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 26 March 2025.

Fri 9/519:15ORD - LHR

1 stop12h 20mScandinavian Airlines

Fri 16/507:05LHR - ORD

2 stops15h 05mScandinavian Airlines

Deal found 25/3£455

Wed 7/505:51ORD - LGW

2 stops19h 04mMultiple Airlines

Wed 14/514:00LGW - ORD

2 stops24h 55mMultiple Airlines

Deal found 24/3£455

Thu 24/419:25ORD - LHR

1 stop18h 55mIcelandair

Mon 28/421:25LHR - ORD

1 stop26h 50mIcelandair

Deal found 25/3£457

Tue 22/416:00ORD - LHR

1 stop13h 50mAir Canada

Sun 27/417:40LHR - ORD

1 stop21h 15mAir Canada

Deal found 24/3£459

Wed 23/415:45ORD - LHR

1 stop11h 20mAer Lingus

Wed 30/413:25LHR - ORD

1 stop11h 35mAer Lingus

Deal found 25/3£467

Wed 16/422:20ORD - LHR

Nonstop7h 55mIberia

Wed 23/412:30LHR - ORD

1 stop13h 31mIberia

Deal found 24/3£468

Tue 22/421:30ORD - LHR

1 stop13h 35mFinnair

Wed 30/409:30LHR - ORD

1 stop14h 20mFinnair

Deal found 24/3£469

Wed 30/418:05ORD - LHR

Nonstop8h 15mUnited Airlines

Mon 19/512:10LHR - ORD

1 stop33h 45mUnited Airlines

Deal found 24/3£480

Tue 22/418:38ORD - LGW

1 stop34h 02mBritish Airways

Tue 29/415:05LGW - ORD

1 stop26h 00mBritish Airways

Deal found 24/3£482

Mon 7/413:26ORD - LHR

1 stop14h 04mJetBlue

Tue 15/408:25LHR - ORD

1 stop17h 02mJetBlue

Deal found 25/3£491

Tue 19/807:00ORD - LGW

1 stop21h 00mVirgin Atlantic

Thu 4/912:00LGW - ORD

1 stop15h 34mVirgin Atlantic

Deal found 24/3£493

Thu 10/411:52ORD - LGW

1 stop16h 48mAmerican Airlines

Thu 17/412:20LGW - ORD

2 stops16h 56mAmerican Airlines

Deal found 24/3£497

Direct flights from O'Hare Intl to London
Explore direct flight options from O'Hare Intl to London based on user searches, and compare prices and availability for your desired travel dates. Data last updated 26 March 2025.

Wed 16/417:45ORD - LHR

Nonstop7h 35mIberia

Wed 23/415:30LHR - ORD

Nonstop8h 45mIberia

Deal found 24/3£460

Tue 22/416:55ORD - LHR

Nonstop7h 55mBritish Airways

Tue 29/413:10LHR - ORD

Nonstop8h 45mBritish Airways

Deal found 25/3£492

Sun 4/522:20ORD - LHR

Nonstop7h 55mAmerican Airlines

Fri 16/512:15LHR - ORD

Nonstop8h 25mAmerican Airlines

Deal found 25/3£494

Tue 8/416:55ORD - LHR

Nonstop7h 55mFinnair

Tue 15/414:25LHR - ORD

Nonstop8h 35mFinnair

Deal found 25/3£514

Sun 4/516:05ORD - LHR

Nonstop8h 15mUnited Airlines

Thu 15/514:10LHR - ORD

Nonstop9h 05mUnited Airlines

Deal found 25/3£522

Last-minute flights from O'Hare Intl to London
Discover last-minute flight deals from O'Hare Intl to London. Data last updated 26 March 2025 and is based on user searches.

Sun 30/318:00ORD - LGW

1 stop33h 45mTAP AIR PORTUGAL

Thu 3/414:50LGW - ORD

1 stop31h 20mTAP AIR PORTUGAL

Deal found 24/3£520

Mon 31/310:37ORD - LHR

1 stop13h 53mJetBlue

Tue 8/408:25LHR - ORD

1 stop17h 02mJetBlue

Deal found 25/3£497

Mon 31/318:35ORD - LGW

1 stop17h 15mSWISS

Mon 7/418:35LGW - ORD

1 stop23h 35mSWISS

Deal found 24/3£518

Mon 31/320:05ORD - LHR

2 stops16h 45mScandinavian Airlines

Tue 8/406:40LHR - ORD

2 stops21h 31mScandinavian Airlines

Deal found 25/3£539

Tue 1/406:45ORD - LGW

1 stop21h 15mMultiple Airlines

Sat 31/510:00LGW - ORD

1 stop36h 03mMultiple Airlines

Deal found 24/3£474

Tue 1/419:30ORD - LHR

1 stop10h 25mIcelandair

Tue 29/421:25LHR - ORD

1 stop26h 50mIcelandair

Deal found 26/3£482

Tue 1/420:35ORD - LHR

Nonstop7h 55mFinnair

Tue 29/407:30LHR - ORD

1 stop16h 20mFinnair

Deal found 26/3£493

Tue 1/421:15ORD - LHR

1 stop10h 40mAer Lingus

Tue 8/408:50LHR - ORD

1 stop11h 10mAer Lingus

Deal found 25/3£496

Tue 1/411:30ORD - LHR

1 stop13h 00mMultiple Airlines

Tue 8/406:00LHR - ORD

1 stop15h 55mMultiple Airlines

Deal found 25/3£500

Tue 1/416:05ORD - LHR

Nonstop8h 15mUnited Airlines

Tue 8/408:45LHR - ORD

1 stop13h 10mUnited Airlines

Deal found 25/3£509

Wed 2/419:30ORD - LGW

1 stop10h 15mIcelandair

Sun 20/415:40LGW - ORD

1 stop11h 35mIcelandair

Deal found 25/3£483

Wed 2/413:56ORD - LHR

1 stop12h 39mAir Canada

Tue 8/409:30LHR - ORD

2 stops15h 24mAir Canada

Deal found 25/3£523

One-way flights from O'Hare Intl to London
Search for one-way flight options from O'Hare Intl to London. Find affordable one-way fares based on user searches. Data last updated 26 March 2025.

Sun 4/522:15ORD - LGW

1 stop31h 30mIcelandair

Deal found 24/3£203

Thu 1/505:55ORD - LGW

1 stop18h 25mMultiple Airlines

Deal found 24/3£204

Wed 2/419:30ORD - LHR

1 stop18h 50mIcelandair

Deal found 26/3£206

Thu 24/718:00ORD - LGW

1 stop33h 45mTAP AIR PORTUGAL

Deal found 25/3£207

Sun 6/413:26ORD - LHR

1 stop14h 04mJetBlue

Deal found 25/3£212

Mon 18/818:10ORD - LHR

1 stop12h 35mTAP AIR PORTUGAL

Deal found 25/3£214

Wed 7/521:08ORD - LHR

2 stops35h 07mMultiple Airlines

Deal found 24/3£216

Tue 27/508:40ORD - STN

3 stops29h 15mMultiple Airlines

Deal found 25/3£227

Mon 14/405:55ORD - LTN

3 stops51h 50mMultiple Airlines

Deal found 25/3£234

Wed 2/417:22ORD - SEN

2 stops21h 28mMultiple Airlines

Deal found 25/3£242

Mon 14/405:55ORD - LCY

3 stops33h 45mMultiple Airlines

Deal found 25/3£286

Mon 31/320:05ORD - LHR

1 stop19h 35mScandinavian Airlines

Deal found 25/3£288

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Fri 9/5

19:15-13:35

1 stop12h 20m

London Heathrow

Fri 16/5

07:05-16:10

2 stops15h 05m

£455

ChicagoLondon

ORD - LGW

ORDLGW

Chicago O'Hare Intl

Wed 7/5

05:51-06:55

2 stops19h 04m

London Gatwick

Wed 14/5

14:00-08:55

2 stops24h 55m

£455

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Thu 24/4

19:25-20:20

1 stop18h 55m

London Heathrow

Mon 28/4

21:25-18:15

1 stop26h 50m

£457

ChicagoLondon

ORD - LGW

ORDLGW

Chicago O'Hare Intl

Mon 7/4

19:30-11:45

1 stop10h 15m

London Gatwick

Tue 15/4

15:40-18:15

1 stop32h 35m

£458

ChicagoLondon

ORD - STN

ORDSTN

Chicago O'Hare Intl

Thu 1/5

19:15-00:45

3 stops23h 30m

London Stansted

Wed 14/5

21:05-16:10

2 stops25h 05m

£458

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Tue 22/4

16:00-11:50

1 stop13h 50m

London Heathrow

Sun 27/4

17:40-08:55

1 stop21h 15m

£459

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Wed 23/4

15:45-09:05

1 stop11h 20m

London Heathrow

Wed 30/4

13:25-19:00

1 stop11h 35m

£467

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Wed 16/4

22:20-12:15

Nonstop7h 55m

London Heathrow

Wed 23/4

12:30-20:01

1 stop13h 31m

£468

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Tue 22/4

21:30-17:05

1 stop13h 35m

London Heathrow

Wed 30/4

09:30-17:50

1 stop14h 20m

£469

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Wed 23/4

14:05-09:35

1 stop13h 30m

London Heathrow

Mon 28/4

17:10-12:10

1 stop25h 00m

£473

Flights are sorted by cheapest return flights first.

Deals found on 24/3

Showing 1-10 of 60 results

...

Best time to book a flight from O'Hare Intl to London

Have a flexible travel schedule? Discover the best time to fly to London 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

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

The price you pay for your flight from Chicago O'Hare Intl Airport to London may vary depending on when you book. For the best chance of a lower fare, look to book 48 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, January is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to London (average of £112). Flying from Chicago O'Hare Intl Airport to London in August is currently the most expensive (average of £164). 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 LON?

It’s typically best to fly out from Chicago O'Hare Intl Airport to London in the morning. Doing so could potentially save you 15% on the flight price compared to flying at midday, which is usually more expensive.

Rainfall in London by month

In terms of precipitation, rainfall in London 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 when rainfall is around 40.0 mm.

Temperature in London by month

If weather is an important factor for your trip to London, 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).

Reviews of airlines servicing London

Read through reviews of airlines operating flights from Chicago to London, such as Delta, KLM and Finnair. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very Good

7,891 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta

8.0

Very Good

7,891 reviews

Delta

8.0

Very Good

7,891 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

KLM

7.8

Good

1,318 reviews

Delta

8.0

Very Good

7,891 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Finnair

7.6

Good

1,266 reviews

Delta

8.0

Very Good

7,891 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

SWISS

7.5

Good

1,569 reviews

Delta

8.0

Very Good

7,891 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Air France

7.4

Good

1,423 reviews

Delta

8.0

Very Good

7,891 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

What are the cheapest airlines flying from Chicago O'Hare Intl Airport to London round-trip?
According to our current data, Scandinavian Airlines (£455), Icelandair (£457), and Air Canada (£459) offers the cheapest pricing from Chicago O'Hare Intl Airport to London. Users have found that Scandinavian Airlines is 23% cheaper than the other options available to this destination.
What are the cheapest airlines to fly from Chicago O'Hare Intl Airport to London one-way?
The cheapest airline one-way is Icelandair, with whom users have recently found tickets for as low as £203. However, be on the lookout for offers from TAP AIR PORTUGAL and JetBlue, as they are both options that can get you from Chicago O'Hare Intl Airport to London for a low price.
What are the most popular routes from Chicago O'Hare Intl Airport to London?
The most popular flight routes from Chicago O'Hare Intl Airport to London are Chicago O'Hare Intl - London Heathrow, Chicago O'Hare Intl - London Gatwick and Chicago O'Hare Intl - London City.
What are the most reliable airlines from Chicago O'Hare Intl Airport to London?
No one likes to see their flight delayed. When booking a flight from Chicago O'Hare Intl Airport to London consider choosing Royal Jordanian (87%), Air Canada (80%) or Austrian Airlines (80%) as they are the most reliable in getting you off to your destination on time.
What are the cheapest flights from Chicago O'Hare Intl Airport to London?
Looking for the cheapest flight from Chicago O'Hare Intl Airport to London? While on average our users pay £3,169, our data indicates the cheapest price to be £286. The most popular route (Chicago O'Hare Intl - London Heathrow), is priced around £349.
Can I find deals for flights from O'Hare Intl to London that include hotel bookings?
Yes. In addition to deals on O'Hare Intl to London flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from O'Hare Intl to London?
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 London.
Can I find deals for business class flights from O'Hare Intl to London?
Yes. Cheapflights offers flight deals from O'Hare Intl to London 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?
Currently, January is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to London (average of £112). Flying from Chicago O'Hare Intl Airport to London in August is currently the most expensive (average of £164). 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

Hounslow

Deal

Milton Keynes

Gatwick

Croydon

Luton

Slough

Eastbourne

Wembley

Hayes

Ilford

Crawley

Southend-on-Sea

Winchester

Maidstone

Ipswich

Watford

Southall

Dartford

Folkestone

Browse thousands of different options on Cheapflights for your next trip

Top 6 airlines flying from O'Hare Intl to London

Airline	Cheapest	Average	Flexibility	On-time
Finnair	Cheapest£369	Average£716	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
American Airlines	Cheapest£397	Average£776	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights
Iberia	Cheapest£463	Average£645	FlexibilityNo cancel fee	On-time77%	Search Iberia flights
British Airways	Cheapest£493	Average£674	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Lufthansa	Cheapest£503	Average£859	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
United Airlines	Cheapest£515	Average£728	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights

Fly with Cheapflights

How does Cheapflights help users find flights from O'Hare Intl to London?

When you search for this flight from O'Hare Intl to London, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from O'Hare Intl to London?

Cheapflights helps you find that perfect flight to London from O'Hare Intl by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from O'Hare Intl to London with no change fees?

Need flexible booking options for your flight to London from O'Hare Intl? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from O'Hare Intl to London become cheaper?

Not ready to book yet? You can track prices for flights from O'Hare Intl to London on Cheapflights with our Price Alert feature and get notified when better prices are available.

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Cheap flights from Chicago O'Hare Intl Airport to London from £203

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 4/5. 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 are usually found in February or April, booked 48 days in advance, depart on a Wednesday or Monday and return on a Wednesday

Cheap flight deals from O'Hare Intl to London

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from O'Hare Intl to London

Cheapest flights from O'Hare Intl to LondonExplore the most affordable flight options available from O'Hare Intl to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 26 March 2025.

Explore the most affordable flight options available from O'Hare Intl to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 26 March 2025.

Cheapflights Fare Finder

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

Best time to book a flight from O'Hare Intl to London

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

Use this chart to determine the optimal time to book a return flight from O'Hare Intl to London. Price data was last updated on 21 March 2025.

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

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

Find hourly flight availability from O'Hare Intl to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 26 March 2025.

Rainfall in London by month

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Temperature in London by month

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Reviews of airlines servicing London

Get insights into the airlines that provide service to London. 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 London. Reviews last updated 26 March 2025.

Read through reviews of airlines operating flights from Chicago to London, such as Delta, KLM and Finnair. 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 London. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

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

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

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

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

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Alternative routes for O'Hare Intl to London

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Top 6 airlines flying from O'Hare Intl to London

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Cheapest flights from O'Hare Intl to London
Explore the most affordable flight options available from O'Hare Intl to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 26 March 2025.