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Cheap flights from the United Kingdom to Chicago O'Hare Intl Airport from £223

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 12/4. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — ORD
4 Apr — 11 Apr1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from United Kingdom to O'Hare Intl

Enter your travel dates to find the best prices.

Cheapest flights from United Kingdom to O'Hare Intl
Explore the most affordable flight options available from United Kingdom to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 5 March 2026.

Wed 15/408:00
LHR
-
ORD
1 stop14h 00m
TAP AIR PORTUGAL
Sun 26/418:00
ORD
-
LHR
1 stop22h 00m
TAP AIR PORTUGAL
Deal found 1/3£415
Tue 26/513:05
LHR
-
ORD
1 stop11h 10m
Icelandair
Thu 2/719:25
ORD
-
LHR
1 stop10h 30m
Icelandair
Deal found 2/3£416
Mon 27/406:30
STN
-
ORD
2 stops17h 20m
Multiple Airlines
Thu 30/419:25
ORD
-
STN
2 stops21h 30m
Multiple Airlines
Deal found 1/3£416
Tue 14/416:25
LGW
-
ORD
1 stop29h 35m
TAP AIR PORTUGAL
Sat 25/418:05
ORD
-
LGW
1 stop33h 40m
TAP AIR PORTUGAL
Deal found 1/3£417
Mon 9/1119:50
LHR
-
ORD
2 stops26h 55m
Scandinavian Airlines
Fri 13/1119:20
ORD
-
LHR
2 stops37h 15m
Scandinavian Airlines
Deal found 3/3£417
Fri 23/1006:40
LHR
-
ORD
1 stop15h 30m
Scandinavian Airlines
Sun 1/1119:20
ORD
-
LHR
1 stop32h 00m
Scandinavian Airlines
Deal found 1/3£418
Thu 16/414:50
LGW
-
ORD
1 stop31h 10m
TAP AIR PORTUGAL
Sat 2/518:05
ORD
-
LGW
1 stop33h 40m
TAP AIR PORTUGAL
Deal found 1/3£419
Wed 27/515:40
LGW
-
ORD
1 stop11h 45m
Icelandair
Fri 3/719:25
ORD
-
LGW
1 stop13h 15m
Icelandair
Deal found 2/3£419
Tue 26/513:00
LGW
-
ORD
1 stop11h 15m
Icelandair
Sun 28/622:25
ORD
-
LGW
1 stop10h 15m
Icelandair
Deal found 2/3£420
Tue 17/307:25
LHR
-
ORD
1 stop20h 31m
JetBlue
Tue 24/311:00
ORD
-
LHR
1 stop14h 55m
JetBlue
Deal found 3/3£420
Fri 17/406:00
BHX
-
ORD
2 stops18h 15m
Multiple Airlines
Fri 24/422:25
ORD
-
BHX
2 stops20h 30m
Multiple Airlines
Deal found 4/3£421
Mon 25/515:40
LGW
-
ORD
1 stop11h 45m
Icelandair
Tue 30/622:25
ORD
-
LGW
1 stop10h 15m
Icelandair
Deal found 2/3£421

Find flight deals from United Kingdom to O'Hare Intl

Keep the following information in mind while searching for United Kingdom to O'Hare Intl flight deals. Data was last updated 5 March 2026.

Round-trip from

£415

One-way from

£223

Popular in

July

Cheapest in

September

Average price

£524

Good round-trip deal

£541 or less

Good one-way deal

£426 or less
TAP AIR PORTUGAL
  • TAP AIR PORTUGAL
  • 15/4-26/4
  • 2 total stops
  • 36h 00m total
  • United Kingdom to Chicago
Search Deals
12/4
  • 12/4
  • 2 total stops
  • 53h 06m total
  • United Kingdom to Chicago
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (£58 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£10 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 2026
Search Deals
Price to beat on a round-trip flight from United Kingdom to Chicago O'Hare Intl.
Search Deals
Price to beat on a one-way flight from United Kingdom to Chicago O'Hare Intl.
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from United Kingdom to O'Hare Intl 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 5 March 2026.
Use the filters below to find and compare flights from the United Kingdom to Chicago O'Hare Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BirminghamChicago

BHX - ORD

BHXORD

Birmingham

Thu 23/4

19:15-16:10

1 stop26h 55m

Chicago O'Hare Intl

Mon 27/4

19:15-18:35

1 stop17h 20m

£448

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Wed 15/4

07:05-16:10

2 stops15h 05m

Chicago O'Hare Intl

Mon 27/4

19:15-17:00

2 stops15h 45m

£452

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Thu 19/3

07:05-17:45

2 stops15h 40m

Chicago O'Hare Intl

Mon 20/4

19:15-18:50

2 stops17h 35m

£464
Fastest return journey

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Thu 14/5

13:00-18:15

1 stop11h 15m

Chicago O'Hare Intl

Tue 19/5

22:25-14:40

1 stop10h 15m

£481

LondonChicago

LTN - ORD

LTNORD

London Luton

Mon 13/4

08:15-18:15

2 stops16h 00m

Chicago O'Hare Intl

Mon 27/4

19:25-15:45

2 stops14h 20m

£481

LondonChicago

LTN - ORD

LTNORD

London Luton

Sun 15/3

13:10-17:45

2 stops33h 35m

Chicago O'Hare Intl

Sun 22/3

20:20-22:00

2 stops20h 40m

£496

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Thu 14/5

13:05-18:15

1 stop11h 10m

Chicago O'Hare Intl

Tue 19/5

22:25-20:20

1 stop15h 55m

£502

LondonChicago

LTN - ORD

LTNORD

London Luton

Sat 18/4

18:15-16:00

2 stops27h 45m

Chicago O'Hare Intl

Sat 25/4

19:25-22:55

2 stops21h 30m

£502

LondonChicago

LTN - ORD

LTNORD

London Luton

Tue 14/4

14:45-16:00

2 stops31h 15m

Chicago O'Hare Intl

Sat 25/4

19:25-22:55

2 stops21h 30m

£503

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Mon 13/4

07:25-14:00

1 stop12h 35m

Chicago O'Hare Intl

Thu 23/4

13:06-05:55

1 stop10h 49m

£508

Flights are sorted by cheapest return flights first.

Deals found on 5/3

Showing 1-10 of 60 resultsSorted by cheapest first
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2
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6

Best time to book a flight from United Kingdom to O'Hare Intl

Have a flexible travel schedule? Discover the best time to fly to O'Hare Intl from United Kingdom 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 the United Kingdom to Chicago O'Hare Intl Airport

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

Currently, April is the cheapest month in which you can book a flight from United Kingdom to Chicago O'Hare Intl Airport (average of £122). Flying from United Kingdom to Chicago O'Hare Intl Airport in July is currently the most expensive (average of £466). 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 GB to ORD?

Find hourly flight availability from United Kingdom to O'Hare Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 5 March 2026.

When flying from United Kingdom to Chicago O'Hare Intl Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How often are flights from the United Kingdom to Chicago delayed?

About 11% of weekly flights between United Kingdom and Chicago have experienced delays in the past year, with the average delay time being 169 minutes.

What is the most punctual flight time for the United Kingdom to Chicago flights?

Historically, flights departing at night are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Thursday tends to have the lowest number of delays on this route, whereas Friday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on the United Kingdom to Chicago flights?

Over the past year, United Airlines have had the lowest number of delays on this route, with just 5% of flights being delayed.

Reviews of airlines servicing O'Hare Intl

Get insights into the airlines that provide service to O'Hare Intl. 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 O'Hare Intl. Reviews last updated 5 March 2026.
Get a feel of what it's like to fly with United Airlines, Aer Lingus, andIcelandair from the United Kingdom to Chicago O'Hare Intl Airport by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,397 reviews
Check prices

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Food

6.6

Overall

7.4

Crew

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
United Airlines
7.4
Good
9,397 reviews
United Airlines
7.4
Good
9,397 reviews
Check prices

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Food

6.6

Overall

7.4

Crew

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
Aer Lingus
7.2
Good
1,467 reviews
United Airlines
7.4
Good
9,397 reviews
Check prices

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Food

6.6

Overall

7.4

Crew

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
Icelandair
7.1
Good
617 reviews
United Airlines
7.4
Good
9,397 reviews
Check prices

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Food

6.6

Overall

7.4

Crew

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
Lufthansa
6.8
Okay
7,828 reviews
United Airlines
7.4
Good
9,397 reviews
Check prices

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Food

6.6

Overall

7.4

Crew

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
British Airways
6.7
Okay
7,776 reviews
United Airlines
7.4
Good
9,397 reviews
Check prices

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Food

6.6

Overall

7.4

Crew

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.

Related info for your journey

Find useful and relevant information for your journey from United Kingdom to O'Hare Intl. 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 United Kingdom to Chicago O'Hare Intl Airport?

    There are many flights that can get you from United Kingdom to Chicago O'Hare Intl Airport in 11h 15m. Fly via Scandinavian Airlines, Icelandair, or United Airlines to get the fastest option. Airlines will cover a distance of 3960 mi. This flight may include one or multiple stops.

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

    The cheapest airline one-way is TAP AIR PORTUGAL, with whom users have recently found tickets for as low as £294. However, be on the lookout for offers from JetBlue and United Airlines, as they are both options that can get you from United Kingdom to Chicago O'Hare Intl Airport for a low price.

  • What are the most popular routes from United Kingdom to Chicago O'Hare Intl Airport?

    Most travelers choose London Heathrow - Chicago O'Hare Intl, London Gatwick - Chicago O'Hare Intl or London City - Chicago O'Hare Intl when deciding on the best route from United Kingdom to Chicago O'Hare Intl Airport.

  • What are the most reliable airlines from United Kingdom to Chicago O'Hare Intl Airport?

    No one likes to see their flight delayed. When booking a flight from United Kingdom to Chicago O'Hare Intl Airport consider choosing Air Canada (95%), Brussels Airlines (95%) or Lufthansa (95%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from United Kingdom to Chicago O'Hare Intl Airport?

    While on average a flight from United Kingdom to Chicago O'Hare Intl Airport is generally £1,357, our data shows the cheapest flight currently is £364. When looking at the most popular route, (London Heathrow - Chicago O'Hare Intl), you can expect to pay £20 for that flight.

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

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

  • How can I find direct flights from United Kingdom to O'Hare Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from United Kingdom to O'Hare Intl.

  • Can I find deals for business class flights from United Kingdom to O'Hare Intl?

    Yes. Cheapflights offers flight deals from United Kingdom to O'Hare Intl 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 United Kingdom to Chicago O'Hare Intl Airport?

    Currently, April is the cheapest month in which you can book a flight from United Kingdom to Chicago O'Hare Intl Airport (average of £122). Flying from United Kingdom to Chicago O'Hare Intl Airport in July is currently the most expensive (average of £466). 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

Travelling to a place near Chicago O'Hare Intl Airport?

Book flights to Chicago O'Hare Intl Airport if you plan to visit one of these locations
Elk Grove Village

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Alternative routes for United Kingdom to O'Hare Intl

See prices for flight routes from nearby airports that may be better suited for you.
Heathrow to O'Hare Intl flights
Heathrow to Midway flights
Gatwick to O'Hare Intl flights
London City to O'Hare Intl flights
Stansted to O'Hare Intl flights
Luton to O'Hare Intl flights
Edinburgh to O'Hare Intl flights
Manchester to O'Hare Intl flights
Gatwick to Midway flights
Edinburgh to Midway flights
Birmingham to O'Hare Intl flights
Manchester to Midway flights
Glasgow Intl to O'Hare Intl flights
Bristol to O'Hare Intl flights
Glasgow Intl to Midway flights
Leeds to O'Hare Intl flights
Birmingham to Midway flights
Bristol to Midway flights
Southend to O'Hare Intl flights
Norwich to O'Hare Intl flights
Newcastle upon Tyne to O'Hare Intl flights
Inverness to O'Hare Intl flights
Cardiff to O'Hare Intl flights
Belfast Intl to O'Hare Intl flights
Belfast City to O'Hare Intl flights
Southampton to O'Hare Intl flights
Dublin to O'Hare Intl flights
Newquay to O'Hare Intl flights
Liverpool to O'Hare Intl flights
Grimsby to O'Hare Intl flights
Leeds to Midway flights
Istanbul to O'Hare Intl flights
Exeter to O'Hare Intl flights
Dublin to Midway flights
Athens to O'Hare Intl flights
Cardiff to Midway flights
Newcastle upon Tyne to Midway flights
Krakow to O'Hare Intl flights
Amsterdam to O'Hare Intl flights
Arlanda to O'Hare Intl flights
Southampton to Midway flights
Barcelona-El Prat to O'Hare Intl flights
Bruxelles-National to O'Hare Intl flights
Darlington to O'Hare Intl flights
Darlington to Midway flights

Top 10 airlines flying from United Kingdom to O'Hare Intl

Discover the top 10 airlines that operate flights from United Kingdom to O'Hare Intl. 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 5 March 2026.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£288Average£561FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
LufthansaCheapest£288Average£678FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Virgin AtlanticCheapest£347Average£589FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
Aer LingusCheapest£366Average£701FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
TAP AIR PORTUGALCheapest£372Average£578FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
Scandinavian AirlinesCheapest£377Average£473FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
Brussels AirlinesCheapest£388Average£545FlexibilityNo cancel feeOn-timeN/A
Search Brussels Airlines flights
British AirwaysCheapest£395Average£581FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Austrian AirlinesCheapest£404Average£615FlexibilityNo cancel feeOn-time78%
Search Austrian Airlines flights
United AirlinesCheapest£413Average£626FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Fly with Cheapflights

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 United Kingdom to O'Hare Intl?

When you search for this flight from United Kingdom to O'Hare Intl, 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 United Kingdom to O'Hare Intl?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from United Kingdom to O'Hare Intl for you. Better yet — we are completely free to use.

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

Need flexible booking options for your flight to O'Hare Intl from United Kingdom? 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 United Kingdom to O'Hare Intl become cheaper?

Yes, Cheapflights offers price alerts on United Kingdom to O'Hare Intl flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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