Price observed over the last 3 months for a round trip.
Compare all flight tickets and find cheap flights from London to Chicago
Today’s flight suggestion for London - Chicago
Outbound 7 December 2026 · Inbound 23 December 2026
Today’s suggestion
20:35
LHR 17:20 +1
ORD26h 45m
1 stop
18:30
ORD 19:30 +1
LHR19h 0m
1 stop
From £581
07:00
LGW 17:20
ORD16h 20m
2 stops
18:30
ORD 16:40 +1
LGW16h 10m
2 stops
From £616
07:20
LTN 17:20
ORD16h 0m
2 stops
18:30
ORD 21:35 +1
LTN21h 5m
2 stops
From £624
Cheapest flight
£1735
Average price of a round trip
£1797
Average price recorded over the last 3 months for a round trip.
Flight duration
27h3
A flight from London to Chicago takes on average 27h3.
Best time
December
According to user searches, the ideal month to go to Chicago is December.
What is the cheapest month for this flight?
Monthly price data (Table View)
November
Nov
£394
December
Dec
£497
January
Jan
£0
February
Feb
£0
March
Mar
£0
April
Apr
£0
May
May
£520
June
Jun
£763
July
Jul
£1,169
August
Aug
£488
September
Sept
£1,462
October
Oct
* The prices shown are an average per month of the prices found by Liligo users during the last 30 days.
Tips for finding cheap flights from London to Chicago
Check out our tips for booking your flight to Chicago (USA) from London (United Kingdom) at the cheapest possible price.
Usually, the cheapest month to pick up a ticket on this route is November, with an average ticket price of £335 (calculation over the last two years). The most touristic season corresponds to the months of November, September and December.
For an attractive price, it is advisable to buy your flight tickets at least 0 days before the departure date.
The airline offering the cheapest tickets is Aer Lingus. A ticket from the company Aer Lingus to Chicago costs on average £1765.
The airlines that offer the most flights are .
Price of flight tickets from London to Chicago
Here is some information and tips to know before booking your flight:
- Flight ticket prices range from £1735 to £1933
- The average price of a flight ticket is about £1797
- Prices are lowest for stays in the month of November
- The month in which booking a ticket is cheaper is: October
info departure city :
London, United Kingdom
airports :
London City Airport (LCY)
London Gatwick Airport (LGW)
London Heathrow Airport (LHR)
London Luton Airport (LTN)
London-Stansted Airport (STN)
local time :
London is a city in the country United Kingdom, the time zone is [[timezone]]. In London, it is currently {fromLocalTime}, the temperature is on average 8°C, with a minimum of 5°C and a maximum of 11°C.
The city of London (LON) has 5 airport(s): London City, London Gatwick, London Heathrow, London Luton and London-Stansted
destination info :
Chicago, USA
airports :
Chicago-Merrill C. Meigs Field Airport (CGX)
Chicago FSS (CHI)
Chicago-Midway International Airport (MDW)
Chicago-O'Hare International Airport (ORD)
local time :
Chicago is in the country USA, the time zone is [[timezone]]. In Chicago, it is currently {toLocalTime}, the temperature is on average 11°C, with a minimum of 7°C and a maximum of 15°C.
The city of Chicago (CHI) has 4 airport(s): Chicago-Merrill C. Meigs Field, Chicago FSS, Chicago-Midway and Chicago-O'Hare
Useful info about Chicago
What is the least touristic period to go to Chicago?
If you want to visit Chicago during the least touristic period, choose the month of December.
What is the most popular time to travel to Chicago?
In Chicago, the most touristic month is November. It is during this period that the prices offered by airlines are also the highest.
When should I book my flight London - Chicago?
According to our data, it is recommended to book your flight 0 days before your departure. If you book your flight 1 weeks before your departure, you may find a price below average. You can also choose morning flights that are 100% cheaper than afternoon and evening flights. The cheapest day to book a flight London - Chicago is Monday.
What are the arrival and destination airports when travelling between London and Chicago?
When you leave, you can leave from London Heathrow, and you will arrive at Chicago-O'Hare.
How to reach London airport from the city centre?
The airport London City is located 16 km, London Gatwick is located 38 km, London Heathrow is located 35 km, London Luton is located 45 km or London-Stansted is located 49 km from the city centre. You can access it by using public transport, taking a taxi, or renting a car..
Are there other means of transport to go from London to Chicago?
Flights are the only means of transport listed on Liligo for this journey.
Are there big differences in weather between London and Chicago?
In summer, the average temperature is 22°C in Chicago and 18°C in London. The average rainfall in summer is 145 mm in Chicago and 63 mm in London.In summer, it is warmer in Chicago and it rains less in London. In winter, it is colder in London and it rains more in Chicago.
