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Cheap flights from the United Kingdom to Chicago O'Hare Intl Airport from £273

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 23/9. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — ORD
28 Aug — 4 Sep1
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 29 July 2026.

Wed 16/915:10
EDI
-
ORD
2 stops33h 05m
Multiple Airlines
Mon 21/919:25
ORD
-
EDI
2 stops23h 10m
Multiple Airlines
Deal found 28/7£415
Wed 9/908:25
BHX
-
ORD
2 stops34h 15m
Multiple Airlines
Wed 23/918:00
ORD
-
BHX
2 stops23h 55m
Multiple Airlines
Deal found 26/7£445
Fri 23/1014:20
GLA
-
ORD
1 stop9h 55m
Icelandair
Wed 11/1118:30
ORD
-
GLA
1 stop9h 25m
Icelandair
Deal found 24/7£458
Wed 11/1106:00
EDI
-
ORD
1 stop14h 00m
Multiple Airlines
Tue 17/1120:10
ORD
-
EDI
1 stop14h 40m
Multiple Airlines
Deal found 29/7£466
Wed 11/1106:00
EDI
-
ORD
1 stop14h 00m
Multiple Airlines
Mon 16/1120:10
ORD
-
EDI
1 stop13h 10m
Multiple Airlines
Deal found 29/7£472
Tue 10/1111:20
EDI
-
ORD
1 stop12h 00m
Icelandair
Mon 16/1118:30
ORD
-
EDI
1 stop9h 50m
Icelandair
Deal found 29/7£473
Tue 24/1111:55
GLA
-
ORD
1 stop11h 25m
Icelandair
Sat 5/1218:30
ORD
-
GLA
1 stop9h 25m
Icelandair
Deal found 26/7£475
Tue 15/914:20
GLA
-
ORD
1 stop9h 55m
Icelandair
Wed 30/922:25
ORD
-
GLA
1 stop9h 00m
Icelandair
Deal found 29/7£487
Tue 6/1023:10
BHX
-
ORD
2 stops28h 15m
Multiple Airlines
Tue 13/1019:25
ORD
-
BHX
2 stops19h 20m
Multiple Airlines
Deal found 28/7£490
Thu 12/1107:30
EDI
-
ORD
1 stop12h 30m
Multiple Airlines
Sun 22/1120:10
ORD
-
EDI
1 stop17h 35m
Multiple Airlines
Deal found 29/7£490
Wed 14/1015:10
EDI
-
ORD
2 stops33h 05m
Multiple Airlines
Wed 21/1019:25
ORD
-
EDI
2 stops22h 55m
Multiple Airlines
Deal found 28/7£493
Tue 8/915:10
EDI
-
ORD
2 stops33h 05m
Multiple Airlines
Tue 15/919:25
ORD
-
EDI
3 stops21h 45m
Multiple Airlines
Deal found 26/7£493

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 29 July 2026.

Round-trip from

£415

One-way from

£273

Popular in

July

Cheapest in

February

Average price

£720

Good round-trip deal

£642 or less

Good one-way deal

£540 or less
16/9-21/9
  • 16/9-21/9
  • 4 total stops
  • 56h 15m total
  • United Kingdom to Chicago
Search Deals
23/9
  • 23/9
  • 2 total stops
  • 31h 50m total
  • United Kingdom to Chicago
Search Deals
Highest demand for flights based on searches. 16% potential increase in price (£83 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£11 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 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 29 July 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
Fastest return journey

GlasgowChicago

GLA - ORD

GLAORD

Glasgow Intl

Fri 23/10

14:20-18:15

1 stop9h 55m

Chicago O'Hare Intl

Wed 11/11

18:30-09:55

1 stop9h 25m

£458

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Wed 2/12

12:15-17:20

1 stop11h 05m

Chicago O'Hare Intl

Thu 10/12

18:30-10:50

1 stop10h 20m

£506

LondonChicago

LTN - ORD

LTNORD

London Luton

Wed 23/9

06:15-19:48

3 stops19h 33m

Chicago O'Hare Intl

Wed 30/9

22:25-22:15

2 stops17h 50m

£520

LondonChicago

LTN - ORD

LTNORD

London Luton

Fri 4/9

06:20-14:00

1 stop13h 40m

Chicago O'Hare Intl

Wed 9/9

21:00-21:15

1 stop18h 15m

£521

LondonChicago

LTN - ORD

LTNORD

London Luton

Tue 15/9

15:15-18:15

2 stops33h 00m

Chicago O'Hare Intl

Wed 23/9

22:25-22:15

2 stops17h 50m

£523

GlasgowChicago

GLA - ORD

GLAORD

Glasgow Intl

Wed 9/9

14:20-21:25

1 stop13h 05m

Chicago O'Hare Intl

Sun 13/9

19:25-13:25

1 stop12h 00m

£531

LondonChicago

LTN - ORD

LTNORD

London Luton

Wed 9/9

06:15-19:48

3 stops19h 33m

Chicago O'Hare Intl

Mon 16/11

15:55-10:45

1 stop12h 50m

£532

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Fri 15/1

21:35-15:30

2 stops47h 55m

Chicago O'Hare Intl

Fri 22/1

20:10-15:45

1 stop13h 35m

£533

Newcastle upon TyneChicago

NCL - ORD

NCLORD

Newcastle upon Tyne

Wed 2/9

09:25-19:15

1 stop15h 50m

Chicago O'Hare Intl

Mon 7/9

15:45-08:15

1 stop10h 30m

£541

ManchesterChicago

MAN - ORD

MANORD

Manchester

Thu 12/11

12:55-16:45

2 stops33h 50m

Chicago O'Hare Intl

Fri 27/11

19:15-08:40

2 stops31h 25m

£543

Flights are sorted by cheapest return flights first.

Deals found on 29/7

Showing 1-10 of 60 resultsSorted by cheapest first
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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, February is the cheapest month in which you can book a flight from United Kingdom to Chicago O'Hare Intl Airport (average of £499). Flying from United Kingdom to Chicago O'Hare Intl Airport in July is currently the most expensive (average of £796). 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 29 July 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.

Weekly flight availability from United Kingdom to Chicago O'Hare Intl Airport

Explore weekly flight availability from United Kingdom to O'Hare Intl. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 29 July 2026.

The most flights from GB0 to ORD are scheduled on a Monday (52 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (49 on average).

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 179 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 early afternoon tend to experience delays more often.

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

Wednesday tends to have the lowest number of delays on this route, whereas Tuesday 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 6% of flights being delayed.

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

The price you pay for your flight from United Kingdom to Chicago O'Hare Intl Airport may vary depending on when you book. For the best chance of a lower fare, look to book 55 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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 29 July 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
10,052 reviews
Check prices

Comfort

7.3

Entertainment

7.1

Boarding

7.7

Crew

8.1

Food

6.6

Overall

7.4

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
10,052 reviews
United Airlines
7.4
Good
10,052 reviews
Check prices

Comfort

7.3

Entertainment

7.1

Boarding

7.7

Crew

8.1

Food

6.6

Overall

7.4

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
7.3
Good
1,682 reviews
United Airlines
7.4
Good
10,052 reviews
Check prices

Comfort

7.3

Entertainment

7.1

Boarding

7.7

Crew

8.1

Food

6.6

Overall

7.4

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
7.0
Good
716 reviews
United Airlines
7.4
Good
10,052 reviews
Check prices

Comfort

7.3

Entertainment

7.1

Boarding

7.7

Crew

8.1

Food

6.6

Overall

7.4

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
8,163 reviews
United Airlines
7.4
Good
10,052 reviews
Check prices

Comfort

7.3

Entertainment

7.1

Boarding

7.7

Crew

8.1

Food

6.6

Overall

7.4

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
8,126 reviews
United Airlines
7.4
Good
10,052 reviews
Check prices

Comfort

7.3

Entertainment

7.1

Boarding

7.7

Crew

8.1

Food

6.6

Overall

7.4

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 9h 55m. Fly via Icelandair, TAP AIR PORTUGAL, or Aer Lingus to get the fastest option. Airlines will cover a distance of 3663 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 JetBlue, with whom users have recently found tickets for as low as £314. However, be on the lookout for offers from Icelandair and TAP AIR PORTUGAL, 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 (90%), Austrian Airlines (90%) or United Airlines (90%) 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 £1,747, our data shows the cheapest flight currently is £393. When looking at the most popular route, (London Heathrow - Chicago O'Hare Intl), you can expect to pay £359 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, February is the cheapest month in which you can book a flight from United Kingdom to Chicago O'Hare Intl Airport (average of £499). Flying from United Kingdom to Chicago O'Hare Intl Airport in July is currently the most expensive (average of £796). 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

Browse thousands of different options on Cheapflights for your next trip

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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 29 July 2026.
AirlineCheapestAverageFlexibilityOn-time
RyanairCheapest£36Average£59FlexibilityNo cancel feeOn-timeN/A
Search Ryanair flights
IcelandairCheapest£205Average£562FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Virgin AtlanticCheapest£305Average£640FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
Aer LingusCheapest£367Average£747FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
Scandinavian AirlinesCheapest£379Average£499FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
TAP AIR PORTUGALCheapest£391Average£581FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
Brussels AirlinesCheapest£399Average£621FlexibilityNo cancel feeOn-timeN/A
Search Brussels Airlines flights
British AirwaysCheapest£414Average£639FlexibilityNo cancel feeOn-time70%
Search British Airways flights
LufthansaCheapest£421Average£770FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
FinnairCheapest£432Average£706FlexibilityNo cancel feeOn-time76%
Search Finnair 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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