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Cheap flights from Chicago O'Hare Intl Airport to London Heathrow Airport from £168

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 1/4. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
ORD — LHR
2 Mar — 9 Mar1
1 adult
Sat 2/3
Sat 9/3

The best prices from Chicago O'Hare Intl to London Heathrow are usually found in February or January, booked 70 days in advance, depart on a Monday or Wednesday and return on a Wednesday

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 27 February 2024.

Popular in

June

Cheapest in

February

Average price

£443

Round-trip from

£59
High demand for flights, 38% potential price rise
Best time to find cheap flights, 30% potential price drop
Average for round-trip flights in February 2024
From Chicago O'Hare Intl to London Heathrow

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

Saturday flights are generally found to be more expensive for flights from Chicago O'Hare Intl Airport to London Heathrow Airport. 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 Heathrow Airport.

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

To save on the cost of your flight from Chicago O'Hare Intl Airport to London Heathrow Airport, book at least 11 days before your planned departure. Booking around this time can save you about 12% on the cost of this flight compared to booking a flight leaving this week. We have found prices from £446 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as £506.

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

Our data shows that February tends to be the cheapest month to fly to London Heathrow Airport from Chicago O'Hare Intl Airport. Users have commonly found prices around £599 for the month, but tickets can be as low as £323. Due to multiple factors, prepare for potentially higher prices in June.

When is the cheapest time to fly from Chicago O'Hare Intl Airport to London Heathrow Airport (ORD - LHR)?

Unlike in the morning, when flights are generally more expensive, you can save up to 17% on flights from Chicago O'Hare Intl Airport to London Heathrow Airport by exploring options for tickets in the afternoon.

Cheap Scandinavian Airlines flights from O'Hare Intl to Heathrow

Explore cheap flight options specifically provided by Scandinavian Airlines for the route between O'Hare Intl and Heathrow. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 937,418 searches. Data last updated 27 February 2024.
Find some of the cheapest Scandinavian Airlines flights travelling from Chicago to London. Come back soon if you're not finding the exact deal you're looking for.
Mon 18/322:45ORD - LHR
1 stop17h 55mScandinavian Airlines
Sun 24/309:55LHR - ORD
1 stop14h 10mScandinavian Airlines
Deal found 26/2£384
Mon 8/419:45ORD - LHR
1 stop19h 55mScandinavian Airlines
Fri 12/409:55LHR - ORD
1 stop14h 00mScandinavian Airlines
Deal found 26/2£387
Wed 13/322:45ORD - LHR
1 stop12h 15mScandinavian Airlines
Wed 20/309:55LHR - ORD
1 stop14h 10mScandinavian Airlines
Deal found 26/2£390
Mon 18/322:45ORD - LHR
1 stop12h 15mScandinavian Airlines
Mon 25/309:55LHR - ORD
1 stop14h 10mScandinavian Airlines
Deal found 26/2£391
Mon 8/419:45ORD - LHR
1 stop17h 45mScandinavian Airlines
Thu 11/409:55LHR - ORD
1 stop14h 00mScandinavian Airlines
Deal found 25/2£393
Mon 29/419:45ORD - LHR
1 stop14h 15mScandinavian Airlines
Wed 8/506:40LHR - ORD
1 stop17h 15mScandinavian Airlines
Deal found 25/2£394
Mon 18/322:45ORD - LHR
1 stop12h 15mScandinavian Airlines
Tue 26/309:55LHR - ORD
1 stop14h 10mScandinavian Airlines
Deal found 25/2£398
Mon 22/419:45ORD - LHR
1 stop15h 55mScandinavian Airlines
Fri 26/409:55LHR - ORD
1 stop14h 00mScandinavian Airlines
Deal found 25/2£398
Fri 15/322:45ORD - LHR
1 stop12h 15mScandinavian Airlines
Tue 26/309:55LHR - ORD
1 stop14h 10mScandinavian Airlines
Deal found 26/2£400

Cheap Aer Lingus flights from O'Hare Intl to Heathrow

Explore cheap flight options specifically provided by Aer Lingus for the route between O'Hare Intl and Heathrow. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 937,418 searches. Data last updated 27 February 2024.
Browse through some of the cheapest Aer Lingus flights travelling from Chicago to London. Make sure to examine the flight information before completing your reservation.
Sat 30/315:55ORD - LHR
1 stop10h 05mAer Lingus
Mon 8/407:40LHR - ORD
1 stop17h 25mAer Lingus
Deal found 26/2£447
Sat 6/415:45ORD - LHR
1 stop10h 15mAer Lingus
Sun 21/406:45LHR - ORD
1 stop13h 15mAer Lingus
Deal found 26/2£473

Cheap O'Hare Intl to Heathrow flights in February & March 2024

Find cheap flight options from O'Hare Intl to Heathrow specifically for the months of February and March 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 937,418 searches. Prices were last updated on 27 February 2024.
The lowest fares we've come across on flights travelling from Chicago to London in February and March 2024. Check back in a little while for more flight options.
Mon 18/322:45ORD - LHR
1 stop17h 55mScandinavian Airlines
Sun 24/309:55LHR - ORD
1 stop14h 10mScandinavian Airlines
Deal found 26/2£384
Sun 3/321:45ORD - LHR
1 stop12h 15mScandinavian Airlines
Mon 25/309:55LHR - ORD
1 stop14h 10mScandinavian Airlines
Deal found 26/2£390
Sun 3/321:45ORD - LHR
1 stop17h 55mScandinavian Airlines
Thu 7/306:40LHR - ORD
1 stop17h 25mScandinavian Airlines
Deal found 26/2£391
Mon 4/321:45ORD - LHR
1 stop12h 15mScandinavian Airlines
Thu 7/309:55LHR - ORD
1 stop14h 10mScandinavian Airlines
Deal found 26/2£398
Fri 15/322:45ORD - LHR
1 stop12h 15mScandinavian Airlines
Tue 26/309:55LHR - ORD
1 stop14h 10mScandinavian Airlines
Deal found 26/2£400
Thu 29/221:45ORD - LHR
1 stop12h 15mScandinavian Airlines
Mon 4/309:55LHR - ORD
1 stop14h 10mScandinavian Airlines
Deal found 25/2£402
Wed 28/221:45ORD - LHR
1 stop12h 15mScandinavian Airlines
Wed 6/309:55LHR - ORD
1 stop14h 10mScandinavian Airlines
Deal found 25/2£405
Thu 29/221:45ORD - LHR
1 stop12h 15mScandinavian Airlines
Thu 7/309:55LHR - ORD
1 stop14h 10mScandinavian Airlines
Deal found 26/2£408
Wed 28/221:45ORD - LHR
1 stop12h 15mScandinavian Airlines
Mon 11/309:55LHR - ORD
1 stop14h 10mScandinavian Airlines
Deal found 26/2£411

O'Hare Intl to Heathrow 2024 flight deals

Discover exclusive flight deals for travel between O'Hare Intl and Heathrow in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 937,418 searches. Data last updated 27 February 2024.
The lowest fares we've come across on flights travelling from Chicago to London in February and March 2024. Check back in a little while for more flight options.
Mon 30/920:55ORD - LHR
1 stop10h 30mAer Lingus
Tue 15/1013:25LHR - ORD
1 stop11h 40mAer Lingus
Deal found 26/2£278
Tue 1/1020:55ORD - LHR
1 stop11h 00mAer Lingus
Wed 16/1006:45LHR - ORD
1 stop13h 15mAer Lingus
Deal found 26/2£279
Tue 1/1015:45ORD - LHR
1 stop10h 15mAer Lingus
Wed 16/1008:50LHR - ORD
1 stop11h 10mAer Lingus
Deal found 26/2£283
Wed 18/915:45ORD - LHR
1 stop10h 15mAer Lingus
Mon 30/908:50LHR - ORD
1 stop11h 10mAer Lingus
Deal found 26/2£284
Wed 18/920:55ORD - LHR
1 stop11h 00mAer Lingus
Mon 23/913:25LHR - ORD
1 stop11h 40mAer Lingus
Deal found 26/2£285
Mon 23/915:45ORD - LHR
1 stop10h 15mAer Lingus
Mon 30/907:40LHR - ORD
1 stop12h 20mAer Lingus
Deal found 26/2£289
Wed 2/1015:45ORD - LHR
1 stop10h 15mAer Lingus
Wed 9/1006:45LHR - ORD
1 stop11h 00mAer Lingus
Deal found 26/2£354
Mon 9/920:55ORD - LHR
1 stop11h 00mAer Lingus
Sun 15/906:45LHR - ORD
1 stop11h 00mAer Lingus
Deal found 26/2£355
Fri 22/1119:55ORD - LHR
1 stop14h 05mScandinavian Airlines
Tue 26/1109:55LHR - ORD
1 stop14h 10mScandinavian Airlines
Deal found 26/2£358

Direct flights to Heathrow from O'Hare Intl

Discover direct flight options from O'Hare Intl to Heathrow. Find direct flights with no stopovers, providing a convenient travel experience. Explore direct flight options based on user searches, and compare prices and availability for your desired travel dates. Over the last 7 days, Cheapflights users made 937,418 searches. Data last updated 27 February 2024.
For a shorter flight, select one of these non-stop flights from Chicago to London. If you're looking for other options for flights from Chicago to London, make sure to update the search form at the top of page.
Mon 11/317:05ORD - LHR
Nonstop7h 50mUnited Airlines
Wed 20/315:10LHR - ORD
Nonstop9h 25mUnited Airlines
Deal found 26/2£494
Sun 31/321:35ORD - LHR
Nonstop8h 10mUnited Airlines
Thu 11/413:05LHR - ORD
Nonstop9h 05mUnited Airlines
Deal found 26/2£495
Mon 6/522:35ORD - LHR
Nonstop7h 40mIberia
Tue 14/508:10LHR - ORD
Nonstop8h 35mIberia
Deal found 26/2£497
Mon 29/421:35ORD - LHR
Nonstop8h 10mUnited Airlines
Tue 7/513:05LHR - ORD
Nonstop9h 05mUnited Airlines
Deal found 26/2£499
Tue 23/415:45ORD - LHR
Nonstop8h 10mUnited Airlines
Tue 7/508:30LHR - ORD
Nonstop8h 50mUnited Airlines
Deal found 26/2£499
Wed 24/419:10ORD - LHR
Nonstop7h 50mBritish Airways
Wed 8/511:05LHR - ORD
Nonstop8h 40mBritish Airways
Deal found 26/2£500
Wed 13/309:55ORD - LHR
Nonstop7h 45mFinnair
Wed 20/313:10LHR - ORD
Nonstop8h 55mFinnair
Deal found 26/2£501
Wed 17/408:20ORD - LHR
Nonstop7h 50mBritish Airways
Thu 2/508:10LHR - ORD
Nonstop8h 35mBritish Airways
Deal found 26/2£502
Tue 23/422:35ORD - LHR
Nonstop7h 40mBritish Airways
Wed 8/508:10LHR - ORD
Nonstop8h 35mBritish Airways
Deal found 26/2£502

O'Hare Intl to Heathrow flights leaving soon

Find last-minute flight options from O'Hare Intl to Heathrow for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 937,418 searches. Data last updated 27 February 2024.
Users seeking a last-minute flight from Chicago to London should consider booking one of these fares. Users should be sure to double check the price, date, and time of their last-minute flight.
Sun 3/321:45ORD - LHR
1 stop12h 15mScandinavian Airlines
Mon 25/309:55LHR - ORD
1 stop14h 10mScandinavian Airlines
Deal found 26/2£390
Sun 3/321:45ORD - LHR
1 stop17h 55mScandinavian Airlines
Thu 7/306:40LHR - ORD
1 stop17h 25mScandinavian Airlines
Deal found 26/2£391
Mon 4/321:45ORD - LHR
2 stops17h 50mScandinavian Airlines
Mon 18/315:35LHR - ORD
2 stops32h 30mScandinavian Airlines
Deal found 26/2£435
Tue 5/321:45ORD - LHR
1 stop12h 15mScandinavian Airlines
Sun 10/320:30LHR - ORD
1 stop27h 35mScandinavian Airlines
Deal found 26/2£436
Tue 5/321:45ORD - LHR
2 stops14h 45mScandinavian Airlines
Sun 10/320:30LHR - ORD
1 stop27h 35mScandinavian Airlines
Deal found 26/2£437
Mon 4/321:45ORD - LHR
2 stops17h 50mScandinavian Airlines
Sun 10/321:05LHR - ORD
2 stops27h 00mScandinavian Airlines
Deal found 26/2£439
Sat 2/321:45ORD - LHR
2 stops34h 50mScandinavian Airlines
Tue 5/306:40LHR - ORD
1 stop17h 25mScandinavian Airlines
Deal found 26/2£445
Mon 4/321:45ORD - LHR
1 stop12h 15mScandinavian Airlines
Tue 26/309:55LHR - ORD
1 stop14h 10mScandinavian Airlines
Deal found 26/2£451
Mon 4/321:45ORD - LHR
1 stop12h 15mScandinavian Airlines
Sun 10/321:05LHR - ORD
2 stops27h 00mScandinavian Airlines
Deal found 26/2£457

One-way flights to Heathrow from O'Hare Intl

Search for one-way flight options from O'Hare Intl to Heathrow. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 937,418 searches. Data last updated 27 February 2024.
If you're seeking multiple options on one-way flights from Chicago to London, be sure to check out these deals, which are updated often. Those seeking round-trip flights from Chicago to London should utilise the search form at the top of the page.
Mon 1/418:00ORD - LHR
1 stop12h 45mTAP AIR PORTUGAL
Deal found 25/2£168
Wed 13/320:15ORD - LHR
1 stop14h 15mTAP AIR PORTUGAL
Deal found 25/2£179
Wed 24/418:00ORD - LHR
1 stop12h 45mTAP AIR PORTUGAL
Deal found 24/2£180
Mon 1/418:00ORD - LHR
1 stop12h 45mTAP AIR PORTUGAL
Deal found 25/2£185
Thu 28/317:25ORD - LHR
2 stops58h 10mMultiple Airlines
Deal found 24/2£216
Wed 17/418:00ORD - LHR
1 stop15h 35mTAP AIR PORTUGAL
Deal found 26/2£218
Sun 7/418:00ORD - LHR
1 stop17h 45mTAP AIR PORTUGAL
Deal found 24/2£219
Mon 22/417:09ORD - LHR
2 stops37h 41mMultiple Airlines
Deal found 26/2£220
Wed 3/418:00ORD - LHR
1 stop12h 45mTAP AIR PORTUGAL
Deal found 26/2£224

Find flights from O'Hare Intl to Heathrow within your budget

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 937,418 searches. Data last updated 27 February 2024.

Fly from

Any airport

Fly to

Any airport

Budget

£384 - £506

Route

Depart

Return

Price

Chicago O'Hare IntlLondon Heathrow

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Mon 18/3

1 stop17h 55m

London Heathrow

Sun 24/3

1 stop14h 10m

£384

Chicago O'Hare IntlLondon Heathrow

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Mon 8/4

1 stop12h 45m

London Heathrow

Sun 14/4

1 stop14h 10m

£426

Chicago O'Hare IntlLondon Heathrow

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Sat 30/3

1 stop10h 05m

London Heathrow

Mon 8/4

1 stop17h 25m

£447

Chicago O'Hare IntlLondon Heathrow

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Wed 17/4

1 stop18h 50m

London Heathrow

Sat 11/5

1 stop26h 55m

£450

Chicago O'Hare IntlLondon Heathrow

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Wed 17/4

Nonstop7h 50m

London Heathrow

Tue 30/4

1 stop15h 55m

£480

Chicago O'Hare IntlLondon Heathrow

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Wed 13/3

Nonstop7h 40m

London Heathrow

Wed 20/3

1 stop14h 10m

£487

Chicago O'Hare IntlLondon Heathrow

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Wed 17/4

1 stop13h 30m

London Heathrow

Wed 24/4

2 stops15h 36m

£499

Chicago O'Hare IntlLondon Heathrow

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Wed 17/4

Nonstop7h 50m

London Heathrow

Thu 2/5

Nonstop8h 35m

£502

Chicago O'Hare IntlLondon Heathrow

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Mon 11/3

1 stop10h 35m

London Heathrow

Wed 20/3

1 stop18h 35m

£506

Flights are sorted by cheapest first

Deals found on 26/2

When is the best time to 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 28 January 2024.
The best time to book flights from Chicago O'Hare Intl Airport to London Heathrow Airport is 70 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.
Search Deals

When is the cheapest time to fly from Chicago O'Hare Intl Airport to London Heathrow Airport?

Use this chart to determine the cheapest time to fly return from O'Hare Intl to Heathrow. Price data was last updated on 25 February 2024.
Morning
Midday
Afternoon
Evening
All times are departure.
Travellers seeking maximum savings on their Chicago O'Hare Intl Airport to London Heathrow Airport flight should consider departing on Thursday evenings when fares are most often at their lowest. Thursday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
Search Deals

Average price of flights to Heathrow by month

Plan your trip from O'Hare Intl to Heathrow by taking into account the cheapest months to travel. The average price of a one-way flight from O'Hare Intl to Heathrow is currently £201 while a return flight costs £465. Price data was last updated on 18 February 2024.

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 £111). Flying from Chicago O'Hare Intl Airport to London Heathrow Airport in July is currently the most expensive (average of £177). 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.

January

£88

February

£99

March

£93

April

£110

May

£112

June

£131

July

£140

August

£110

September

£109

October

£125

November

£90

December

£93

Temperature and rainfall in Heathrow by month

Plan your trip to Heathrow by taking into account the average temperature and rainfall totals by month.

LON

Temperature

4 - 17 °C

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 27 February 2024.
See what other customers who have flown with Scandinavian Airlines, Aer Lingus and Finnair from Chicago to London have to say. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.1
Very Good
11,853 reviews

Boarding

8.2

Food

7.5

Comfort

7.9

Overall

8.1

Crew

8.6

Entertainment

8.1

Reviews

1 / 10

It was a good experience other than a short delay.

8.1
Very Good
11,853 reviews
8.1
Very Good
11,853 reviews

Boarding

8.2

Food

7.5

Comfort

7.9

Overall

8.1

Crew

8.6

Entertainment

8.1

Reviews

1 / 10

It was a good experience other than a short delay.

7.8
Good
2,258 reviews
8.1
Very Good
11,853 reviews

Boarding

8.2

Food

7.5

Comfort

7.9

Overall

8.1

Crew

8.6

Entertainment

8.1

Reviews

1 / 10

It was a good experience other than a short delay.

7.7
Good
5,196 reviews
8.1
Very Good
11,853 reviews

Boarding

8.2

Food

7.5

Comfort

7.9

Overall

8.1

Crew

8.6

Entertainment

8.1

Reviews

1 / 10

It was a good experience other than a short delay.

7.7
Good
1,377 reviews
8.1
Very Good
11,853 reviews

Boarding

8.2

Food

7.5

Comfort

7.9

Overall

8.1

Crew

8.6

Entertainment

8.1

Reviews

1 / 10

It was a good experience other than a short delay.

7.7
Good
769 reviews