Question 1

What are the cheapest airlines flying from Chicago to London round-trip?

Accepted Answer

Iberia, at $587, was found to be the cheapest airline from Chicago to London.Alternate airlines to your destination round-trip include Icelandair and Scandinavian Airlines. Iberia is 22% cheaper than the average price of flights available within the next 90 days to this destination.

Question 2

What are the cheapest airlines to fly from Chicago to London one-way?

Accepted Answer

$252 is the cheapest one-way deal found within the past few days, from Icelandair. You may also be able to find cheap deals on WestJet and JetBlue, with prices starting from $266 and $274, respectively.

Question 3

How far ahead should I book a flight from Chicago to London?

Accepted Answer

The best time to book flights from Chicago to London is 68 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.

Question 4

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

Accepted Answer

Currently, November is the cheapest month in which you can book a flight from Chicago to London (average of $661). Flying from Chicago to London in June is currently the most expensive (average of $1,137). 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.

Question 5

What is the cheapest day to fly from Chicago to London?

Accepted Answer

Travelers seeking maximum savings on their Chicago to London flight should consider departing on Wednesday at noon when fares are most often at their lowest. Friday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Question 6

Weekly flight availability from Chicago to London

Accepted Answer

The most flights from CHI to LON are scheduled on a Monday (38 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (26 on average).

Question 7

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Accepted Answer

In terms of precipitation, rainfall in London ranges from 1.6 - 2.8 inches per month. January is typically the wettest month, when rainfall can reach 2.8 in. July is typically the driest time to visit London when rainfall is around 1.6 in.

Question 8

E

Accepted Answer

If weather is an important factor for your trip to London, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 39.2 F).

Question 9

What are the most popular routes from Chicago to London?

Accepted Answer

The most popular route from Chicago to London is Chicago O'Hare Intl - London Heathrow. You may also consider Chicago O'Hare Intl - London Gatwick or Chicago O'Hare Intl - London City.

Question 10

What are the cheapest flights from Chicago to London?

Accepted Answer

Looking at all options, your cheapest flight can be booked for $391. While the most popular route (Chicago O'Hare Intl - London Heathrow) can be booked for $458 on average our data indicates $1,527 when flying from Chicago to London.

Question 11

What are the most reliable airlines from Chicago to London?

Accepted Answer

Before booking your flight to London from Chicago, check out the most reliable airlines to get you to your destination on time: Aer Lingus (70%), Iberia (68%), American Airlines( 66%).

Question 12

What are the most popular airlines that fly from Chicago to London?

Accepted Answer

When booking a flight from Chicago to London, you may want to consider flying on American Airlines, Air Canada or Alaska Airlines as they are the most popular for this route.

Question 13

Where are the most common layover locations when flying from Chicago to London?

Accepted Answer

Of the flights from Chicago to London that have layovers, most of them stop in Reykjavik. Dublin sees the next most layovers on Chicago to London flights. Copenhagen sees the third most layovers on flights from Chicago to London.

Question 14

Where are the least popular layover locations for Chicago to London flights?

Accepted Answer

Chicago to London flights have a layover in Stockholm least often. Stockholm is followed by Lisbon in terms of the least popular layover location on flights from Chicago to London.

Question 15

What are some popular things to do or see while on a layover in Reykjavik?

Accepted Answer

Hallgrímskirkja, Harpa, and Laugardalslaug Geothermal Pool are the most popular attractions in Reykjavik if you're in need of something to do during your layover. Hallgrímskirkja, Harpa, and Laugardalslaug Geothermal Pool are located about 23.2 mi, 23.3 mi, and 24.6 mi, respectively from Reykjavik Keflavik Intl. Travelers can book a car rental at Reykjavik Keflavik Intl for about $51 per day to make their sightseeing more efficient.

Question 16

What are some popular points of interest to see during a layover in Dublin?

Accepted Answer

Most Dublin visitors opt to spend their time at Molly Malone Statue, St. Patrick's Cathedral, and Merrion Square. Molly Malone Statue, St. Patrick's Cathedral and Merrion Square are located about 5.8 mi, 6.1 mi, and 6.0 mi, respectively from Dublin if you are interested in checking them out. Those on a layover in Dublin in need of a rental car can book one at Dublin for about $20.

Question 17

What are points of interest worth seeing during a layover in Copenhagen?

Accepted Answer

Copenhagen travelers tend to visit Tivoli, Kongens Nytorv, and Rådhuspladsen more than any other attractions. Those on a layover in Copenhagen interested in visiting Tivoli, Kongens Nytorv, or Rådhuspladsen can do so by traveling 5.3 mi, 5.1 mi, and 5.2 mi, respectively from Kastrup Copenhagen. Those landing in Copenhagen looking to spend some time exploring during their layover can rent a car for about $27 per day.

Question 18

What is the cheapest day to fly round-trip from Chicago to London?

Accepted Answer

It’s generally more expensive to depart on a Tuesday, if you have to leave on this day you can still search on Cheapflights to find great options that meet your needs.

Question 19

How far in advance should I book a flight from Chicago to London?

Accepted Answer

Find a great deal and save up to 18% by booking at least 60 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from Chicago to London within the next two weeks, with the cheapest ticket starting at $732.

Question 20

What is the cheapest month to fly from Chicago to London?

Accepted Answer

February can be a great time to fly to London from Chicago with a flight ticket averaging about $759. Cheapflights users have found deals in the month of February for as cheap as $437. The most expensive prices can be found in the month of June.

Question 21

What is the cheapest time of day to fly from CHI to LON?

Accepted Answer

A simple way to save on the total cost of your ticket is to fly from Chicago to London in the morning. If you’re flexible enough to do this you can expect to save up to 14% on your trip compared to booking a flight in the evening.

Question 22

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Accepted Answer

Most accurate provider: When it comes to deals on Chicago-London flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Chicago-London flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Chicago-London flight searches over the past month and is updated monthly.

Question 23

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Accepted Answer

Most trusted provider: When it comes to deals on Chicago-London flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Chicago-London flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Question 24

Can I find deals for flights from Chicago to London that include hotel bookings?

Accepted Answer

Yes. In addition to deals on Chicago to London flights, Cheapflights offers vacation packages that include both flights and hotel.

Question 25

How can I find direct flights from Chicago to London?

Accepted Answer

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

Question 26

Can I find deals for business class flights from Chicago to London?

Accepted Answer

Yes. Cheapflights offers flight deals from Chicago to London by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$587 (Cheapflightsfares)
One-way from	$252 (oojo)
Popular in	June
Cheapest in	February
Average price	$671
Good round-trip deal	$684 or less
Good one-way deal	$451 or less

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 2/2. Fares are subject to change and may not be available on all flights or dates of travel.

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The best prices from Chicago to London are usually found in February or November, booked 68 days in advance, depart on a Wednesday or Tuesday and return on a Wednesday

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Cheapest flights from Chicago to London
Explore the most affordable flight options available from Chicago to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 23, 2025.

Explore the most affordable flight options available from Chicago to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 23, 2025.

Best flights from Chicago to London
Discover carefully curated flight deals from Chicago to London that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated January 23, 2025.

Discover carefully curated flight deals from Chicago to London that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated January 23, 2025.

Last-minute flights from Chicago to London
Discover last-minute flight deals from Chicago to London. Data last updated January 23, 2025 and is based on user searches.

Discover last-minute flight deals from Chicago to London. Data last updated January 23, 2025 and is based on user searches.

One-way flights from Chicago to London
Search for one-way flight options from Chicago to London. Find affordable one-way fares based on user searches. Data last updated January 23, 2025.

Search for one-way flight options from Chicago to London. Find affordable one-way fares based on user searches. Data last updated January 23, 2025.

Find flights from Chicago to London within your budget

$252+ Cheap flights from Chicago (CHI) to London (LON)