Price observed over the last 3 months for a round trip.
Compare all flight tickets and find cheap flights from Chicago to London
The cheapest flights right now
Chicago – London
Outbound – Nov 9, 2026
1 stop
12h 40m CPH
Return – Nov 17, 2026
1 stop
14h 30m CPH
$603
yesterday
Chicago – London
Outbound – Nov 9, 2026
1 stop
12h 15m CPH
Return – Nov 17, 2026
1 stop
15h 45m CPH
$622
yesterday
Chicago – London
Outbound – Nov 3, 2026
direct
8h 10m Return – Nov 10, 2026
direct
9h 5m $931
3 days ago
Chicago – London
Outbound – Nov 17, 2026
direct
7h 45m Return – Nov 25, 2026
direct
8h 55m $930
yesterday
* Prices are in USD per passenger, including taxes, for a round trip. Prices are based on searches carried out within the last 72 hours. Please note that availability and ticket prices are subject to change and should not be considered as the final price quoted.
Cheapest flight tickets
$552
Average price of a round trip
$730
Average flight ticket price recorded over the last 3 months for a round trip.
Flight duration
21h10
A flight from Chicago to London takes on average 21h10.
Best time
September
According to user searches, the ideal month to go to London is September.
Tips for finding a cheap flight from Chicago to London
Check out our tips for booking your flight to London (United Kingdom) from Chicago (USA) at the cheapest possible price.
Usually, the cheapest month to pick up a ticket on this route is May, with an average flight ticket price of $442 (calculation over the last two years). The most touristic season corresponds to the months of November, September and April.
For the cheapest flights, it is advisable to buy your ticket at least 243 days before the departure date.
The airline offering the cheapest flight tickets is Icelandair. A ticket from the airline Icelandair to London costs on average $721.
The airlines that offer the most flights are .
Price of flight tickets from Chicago to London
Here is some information and tips to know before booking your flight:
- Flight ticket prices range from $552 to $894
- The average price of a flight ticket is about $730
- Prices are lowest for stays in the month of May
- The month in which booking a ticket is cheaper is: April
info departure city :
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 a city in the country USA, the time zone is [[timezone]]. In Chicago, it is currently {fromLocalTime}, the temperature is on average 18°C, with a minimum of 13°C and a maximum of 23°C.
The city of Chicago (CHI) has 4 airport(s): Chicago-Merrill C. Meigs Field, Chicago FSS, Chicago-Midway and Chicago-O'Hare
destination info :
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 in the country United Kingdom, the time zone is [[timezone]]. In London, it is currently {toLocalTime}, the temperature is on average 14°C, with a minimum of 10°C and a maximum of 16°C.
The city of London (LON) has 5 airport(s): London City, London Gatwick, London Heathrow, London Luton and London-Stansted
Useful info about London
What is the least touristic period to go to London?
If you want to visit London during the least touristic period, choose the month of September.
What is the most popular time to travel to London?
In London, the most popular month is November. It is during this period that the prices offered by airlines are also the highest.
When should I book my flight from Chicago to London?
According to our data, it is recommended to book your flight 243 days before your departure. If you book your flight ticket 35 weeks before your departure, you may find a price below average. You can also choose morning flights that are 7% cheaper than afternoon and evening flights. The cheapest day to book a flight from Chicago to London is Friday.
What are the arrival and destination airports when traveling between Chicago and London?
When you leave, you can leave from Chicago-Midway or Chicago-O'Hare, and you will arrive at London Gatwick, London Heathrow, London Luton, London Southend or London-Stansted.
How to reach Chicago airport from the city centre?
The airport Chicago-Merrill C. Meigs Field is located 4 km, Chicago FSS is located 29 km, Chicago-Midway is located 12 km or Chicago-O'Hare is located 29 km from the city centre. You can access it by using public transportation, taking a taxi, or renting a car.
Are there other means of transportation to go from Chicago to London?
Airplane is the only means of transportation listed on Liligo for this journey.
Are there big differences in weather between Chicago and London?
In summer, the average temperature is 18°C in London and 22°C in Chicago. The average rainfall in summer is 63 mm in London and 145 mm in Chicago. 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.
