Find flights
Deals
When to book
Airlines
FAQs

Cheap flights from the United Kingdom to Chicago from £250

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 9/9. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — CHI
10 Jul — 17 Jul1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from United Kingdom to Chicago

Enter your travel dates to find the best prices.

Cheapest flights from United Kingdom to Chicago
Explore the most affordable flight options available from United Kingdom to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 10 June 2026.

Sat 14/1113:20
BHX
-
ORD
2 stops36h 15m
United Airlines
Mon 16/1115:15
ORD
-
BHX
1 stop15h 20m
United Airlines
Deal found 7/6£443
Mon 31/818:40
MAN
-
ORD
2 stops29h 35m
Multiple Airlines
Mon 14/919:25
ORD
-
MAN
2 stops21h 50m
Multiple Airlines
Deal found 6/6£493
Thu 3/906:55
MAN
-
ORD
2 stops16h 55m
Multiple Airlines
Mon 5/1019:25
ORD
-
MAN
1 stop10h 15m
Multiple Airlines
Deal found 7/6£501
Sun 30/822:25
MAN
-
ORD
2 stops27h 27m
Multiple Airlines
Sat 5/922:25
ORD
-
MAN
1 stop31h 15m
Multiple Airlines
Deal found 10/6£505
Thu 1/1006:55
MAN
-
ORD
2 stops16h 55m
Multiple Airlines
Mon 5/1019:25
ORD
-
MAN
1 stop10h 15m
Multiple Airlines
Deal found 10/6£508
Tue 27/1006:45
MAN
-
ORD
2 stops17h 05m
Multiple Airlines
Sun 1/1118:30
ORD
-
MAN
1 stop10h 15m
Multiple Airlines
Deal found 7/6£513
Mon 31/822:35
MAN
-
ORD
2 stops29h 00m
Multiple Airlines
Sat 5/919:25
ORD
-
MAN
1 stop10h 15m
Multiple Airlines
Deal found 10/6£514
Tue 1/907:30
MAN
-
ORD
2 stops20h 05m
Multiple Airlines
Sun 6/919:25
ORD
-
MAN
1 stop10h 15m
Multiple Airlines
Deal found 10/6£518
Mon 31/818:00
MAN
-
ORD
2 stops29h 50m
Multiple Airlines
Sun 6/919:25
ORD
-
MAN
1 stop10h 15m
Multiple Airlines
Deal found 8/6£519
Thu 8/1017:55
MAN
-
ORD
1 stop28h 05m
TAP AIR PORTUGAL
Wed 14/1018:00
ORD
-
MAN
1 stop34h 10m
TAP AIR PORTUGAL
Deal found 9/6£524
Wed 7/1007:05
LHR
-
ORD
2 stops15h 05m
Scandinavian Airlines
Wed 14/1019:15
ORD
-
LHR
2 stops15h 10m
Scandinavian Airlines
Deal found 7/6£542
Thu 12/1107:05
LHR
-
ORD
2 stops15h 40m
Scandinavian Airlines
Mon 16/1119:15
ORD
-
LHR
1 stop14h 45m
Scandinavian Airlines
Deal found 7/6£543

Find flight deals from United Kingdom to Chicago

Keep the following information in mind while searching for United Kingdom to Chicago flight deals. Data was last updated 10 June 2026.

Round-trip from

£443

One-way from

£250

Popular in

July

Cheapest in

February

Average price

£658

Good round-trip deal

£701 or less

Good one-way deal

£580 or less
United Airlines
  • United Airlines
  • 14/11-16/11
  • 3 total stops
  • 51h 35m total
  • United Kingdom to Chicago
Search Deals
9/9
  • 9/9
  • 2 total stops
  • 31h 50m total
  • United Kingdom to Chicago
Search Deals
Highest demand for flights based on searches. 15% potential increase in price (£74 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 June 2026
Search Deals
Price to beat on a round-trip flight from United Kingdom to Chicago (CHI).
Search Deals
Price to beat on a one-way flight from United Kingdom to Chicago (CHI).
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from United Kingdom to Chicago 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 10 June 2026.
Use the filters below to find and compare flights from the United Kingdom to Chicago that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BirminghamChicago

BHX - ORD

BHXORD

Birmingham

Sat 14/11

13:20-19:35

2 stops36h 15m

Chicago O'Hare Intl

Mon 16/11

15:15-12:35

1 stop15h 20m

£443

BirminghamChicago

BHX - ORD

BHXORD

Birmingham

Wed 9/9

08:10-19:15

1 stop17h 05m

Chicago O'Hare Intl

Wed 23/9

15:45-11:50

1 stop14h 05m

£556

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Thu 3/9

11:05-14:10

Nonstop9h 05m

Chicago O'Hare Intl

Tue 29/9

16:25-06:45

Nonstop8h 20m

£557
Fastest return journey

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Wed 9/9

12:15-15:00

Nonstop8h 45m

Chicago O'Hare Intl

Wed 23/9

17:50-07:40

Nonstop7h 50m

£557

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Wed 9/9

08:50-14:00

1 stop11h 10m

Chicago O'Hare Intl

Sun 13/9

21:00-10:50

Nonstop7h 50m

£558

LondonChicago

LCY - ORD

LCYORD

London City

Wed 7/10

13:45-19:15

1 stop11h 30m

Chicago O'Hare Intl

Wed 14/10

15:45-10:20

1 stop12h 35m

£561

EdinburghChicago

EDI - ORD

EDIORD

Edinburgh Turnhouse

Fri 28/8

19:10-16:10

1 stop27h 00m

Chicago O'Hare Intl

Mon 31/8

19:15-18:25

1 stop17h 10m

£564

ManchesterChicago

MAN - ORD

MANORD

Manchester

Thu 15/10

09:35-16:10

1 stop12h 35m

Chicago O'Hare Intl

Tue 20/10

19:15-18:30

1 stop17h 15m

£564

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Thu 22/10

17:00-16:10

1 stop29h 10m

Chicago O'Hare Intl

Sat 31/10

20:15-16:25

2 stops15h 10m

£567

ManchesterChicago

MAN - ORD

MANORD

Manchester

Mon 5/10

20:25-16:10

2 stops25h 45m

Chicago O'Hare Intl

Sun 18/10

19:15-18:30

1 stop17h 15m

£567

Flights are sorted by cheapest return flights first.

Deals found on 9/6

Showing 1-10 of 60 resultsSorted by cheapest first
1
2
3
...
6

Best time to book a flight from United Kingdom to Chicago

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

What is the cheapest month to book a flight from United Kingdom to Chicago?

Currently, November is the cheapest month in which you can book a flight from United Kingdom to Chicago (average of £452). Flying from United Kingdom to Chicago in December is currently the most expensive (average of £700). 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 CHI?

Find hourly flight availability from United Kingdom to Chicago. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 10 June 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from United Kingdom to Chicago as you normally would.

Weekly flight availability from United Kingdom to Chicago

Explore weekly flight availability from United Kingdom to Chicago. 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 10 June 2026.

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

The best time to book flights from United Kingdom to Chicago is 31 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.

Reviews of airlines servicing Chicago

Get insights into the airlines that provide service to Chicago. 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 Chicago. Reviews last updated 10 June 2026.
Read reviews from past customers who have flown with United Airlines,Aer Lingus, andIcelandair from the United Kingdom to Chicago. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,808 reviews
Check prices

Overall

7.4

Entertainment

7.1

Food

6.6

Comfort

7.3

Boarding

7.7

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
9,808 reviews
United Airlines
7.4
Good
9,808 reviews
Check prices

Overall

7.4

Entertainment

7.1

Food

6.6

Comfort

7.3

Boarding

7.7

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
7.3
Good
1,602 reviews
United Airlines
7.4
Good
9,808 reviews
Check prices

Overall

7.4

Entertainment

7.1

Food

6.6

Comfort

7.3

Boarding

7.7

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
7.0
Good
672 reviews
United Airlines
7.4
Good
9,808 reviews
Check prices

Overall

7.4

Entertainment

7.1

Food

6.6

Comfort

7.3

Boarding

7.7

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
8,053 reviews
United Airlines
7.4
Good
9,808 reviews
Check prices

Overall

7.4

Entertainment

7.1

Food

6.6

Comfort

7.3

Boarding

7.7

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
8,039 reviews
United Airlines
7.4
Good
9,808 reviews
Check prices

Overall

7.4

Entertainment

7.1

Food

6.6

Comfort

7.3

Boarding

7.7

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 Chicago. 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?

    Departing from United Kingdom to Chicago will take you 9h 05m. The distance from United Kingdom to Chicago is about 3939 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from United Kingdom to Chicago one-way?

    One-way options have recently been found by users for as low as £312 on JetBlue. Other airlines that offer cheap prices include Icelandair from £327 and TAP AIR PORTUGAL from £341 one-way.

  • What are the most popular routes from United Kingdom to Chicago?

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

  • What are the most reliable airlines from United Kingdom to Chicago?

    No one likes to see their flight delayed. When booking a flight from United Kingdom to Chicago consider choosing SriLankan Airlines (93%), Malaysia Airlines (93%) or Air Canada (91%) 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?

    Looking for the cheapest flight from United Kingdom to Chicago? While on average our users pay £1,174, our data indicates the cheapest price to be £456. The most popular route (London Heathrow - Chicago O'Hare Intl), is priced around £423.

  • Can I find deals for flights from United Kingdom to Chicago that include hotel bookings?

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

  • How can I find direct flights from United Kingdom to Chicago?

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

  • Can I find deals for business class flights from United Kingdom to Chicago?

    Yes. Cheapflights offers flight deals from United Kingdom to Chicago 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?

    Currently, November is the cheapest month in which you can book a flight from United Kingdom to Chicago (average of £452). Flying from United Kingdom to Chicago in December is currently the most expensive (average of £700). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for United Kingdom to Chicago

See prices for flight routes from nearby airports that may be better suited for you.
Heathrow to O'Hare Intl flights
Gatwick to O'Hare Intl flights
London City to O'Hare Intl flights
Stansted to O'Hare Intl flights
Heathrow to Midway flights
Luton to O'Hare Intl flights
Heathrow to St. Louis flights
Manchester to O'Hare Intl flights
Birmingham to Midway flights
Birmingham to O'Hare Intl flights
Edinburgh to O'Hare Intl flights
Stansted to St. Louis flights
Manchester to Midway flights
Gatwick to St. Louis flights
Liverpool to O'Hare Intl flights
Leeds to O'Hare Intl flights
Gatwick to Midway flights
London City to St. Louis flights
Glasgow Intl to O'Hare Intl flights
Edinburgh to Midway flights
Glasgow Intl to Midway flights
Manchester to St. Louis flights
Belfast Intl to O'Hare Intl flights
Luton to St. Louis flights
Dublin to O'Hare Intl flights
Southampton to O'Hare Intl flights
Newcastle upon Tyne to O'Hare Intl flights
Cardiff to O'Hare Intl flights
Edinburgh to St. Louis flights
Cardiff to Midway flights
Bristol to O'Hare Intl flights
Dublin to Midway flights
Newcastle upon Tyne to Midway flights
Belfast City to O'Hare Intl flights
Heathrow to Peoria flights
Vienna to O'Hare Intl flights
Leeds to Midway flights
Bruxelles-National to O'Hare Intl flights
Bristol to Midway flights
Southend to O'Hare Intl flights
Darlington to Midway flights
Inverness to O'Hare Intl flights
Glasgow Intl to St. Louis flights
Manchester to Peoria flights
Darlington to O'Hare Intl flights
Newquay to O'Hare Intl flights
Heathrow to Champaign flights
London City to Peoria flights

Top 10 airlines flying from United Kingdom to Chicago

Discover the top 10 airlines that operate flights from United Kingdom to Chicago. 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 10 June 2026.
AirlineCheapestAverageFlexibilityOn-time
RyanairCheapest£37Average£59FlexibilityNo cancel feeOn-timeN/A
Search Ryanair flights
IcelandairCheapest£204Average£552FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Virgin AtlanticCheapest£303Average£630FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
Turkish AirlinesCheapest£349Average£660FlexibilityNo cancel feeOn-time77%
Search Turkish Airlines flights
Aer LingusCheapest£365Average£737FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
Scandinavian AirlinesCheapest£377Average£480FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
TAP AIR PORTUGALCheapest£387Average£532FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
Brussels AirlinesCheapest£397Average£617FlexibilityNo cancel feeOn-timeN/A
Search Brussels Airlines flights
LufthansaCheapest£402Average£728FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
British AirwaysCheapest£411Average£601FlexibilityNo cancel feeOn-time70%
Search British Airways 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 Chicago?

When you search for this flight from United Kingdom to Chicago, 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 Chicago?

Cheapflights simply makes it quick and affordable to book flights from United Kingdom to Chicago 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 United Kingdom to Chicago with no change fees?

Need flexible booking options for your flight to Chicago 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 Chicago become cheaper?

Yes, Cheapflights offers price alerts on United Kingdom to Chicago 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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.