Q: How much does it cost for a return flight from London to Chicago?

Airfare is below average for this route at the moment. London to Chicago flights typically cost between £472 and £658 in September. The cheapest return flight price found within the last 3 days was £423 on Multiple Airlines (15 Sept-19 Sept).

Question 1

Which airport typically offers the quickest stopover for flights from London to Chicago?

Accepted Answer

Flights via Amsterdam (AMS) offer the fastest connection on this route, with an average stopover time of 0h 55m.

Question 2

How much does it cost for a return flight from London to Chicago?

Accepted Answer

Airfare is below average for this route at the moment.London to Chicago flights typically cost between £472 and £658 in September.
The cheapest return flight price found within the last 3 days was £423 on Multiple Airlines (15 Sept-19 Sept).

Question 3

What’s the cheapest stopover airport for flights from London to Chicago?

Accepted Answer

Lisbon (LIS) is the most affordable one-stop option, with an average return flight price of £344.

Question 4

What’s the fastest stopover option from London to Chicago?

Accepted Answer

Flights via Amsterdam (AMS) have the shortest average one-way travel time for one-stop routes: 10h 50m.

Question 5

What’s the top stopover airport for flights from London to Chicago?

Accepted Answer

Reykjavik (KEF) – chosen by Cheapflights users on 43% of one-stop itineraries from London to Chicago on Cheapflights.

Question 6

How long is the flight from London to Chicago?

Accepted Answer

A quick flight from London to Chicago can take about 11h 34m. United Airlines provides one of the quickest options available for as low as £437. Airlines will cover a distance of 3942 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

Question 7

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

Accepted Answer

Our cheapest airline available from London to Chicago is Icelandair. Our recent data shows that you can find tickets from as low as £310 on this airline. Additional options worth looking into are Scandinavian Airlines and TAP AIR PORTUGAL, starting at £352 and £366 round-trip. These flights start at 39% lower than the current average price 3 months from now.

Question 8

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

Accepted Answer

To fly one-way, consider booking your trip with TAP AIR PORTUGAL, which is currently one of the cheapest options available, starting at £417. SWISS flights start at £436 while deals on Delta start at £703 one-way.

Question 9

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

Accepted Answer

To ensure you get the cheapest price possible for a flight from London to Chicago, you should look to book at least 55 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

Question 10

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

Accepted Answer

Currently, January is the cheapest month in which you can book a flight from London to Chicago (average of £595). Flying from London to Chicago in July is currently the most expensive (average of £843). 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 11

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

Accepted Answer

Travellers seeking maximum savings on their London to Chicago flight should consider departing on Monday evenings when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Question 12

Weekly flight availability from London to Chicago

Accepted Answer

The most flights from LON to CHI are scheduled on a Monday (53 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (46 on average).

Question 13

E

Accepted Answer

In terms of precipitation, rainfall in Chicago ranges from 43.0 - 125.0 inches per month. August is typically the wettest month, when rainfall can reach 125.0 mm. January is typically the driest time to visit Chicago when rainfall is around 43.0 mm.

Question 14

E

Accepted Answer

If weather is an important factor for your trip to Chicago, 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 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -5.0 C).

Question 15

What are the most popular routes from London to Chicago?

Accepted Answer

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

Question 16

What are the cheapest flights from London to Chicago?

Accepted Answer

While on average a flight from London to Chicago is generally £1,482, our data shows the cheapest flight currently is £415. When looking at the most popular route, (London Heathrow - Chicago O'Hare Intl), you can expect to pay £348 for that flight.

Question 17

What are the most reliable airlines from London to Chicago?

Accepted Answer

Before booking your flight to Chicago from London, check out the most reliable airlines to get you to your destination on time: Air Canada (73%), Austrian Airlines (73%), United Airlines( 73%).

Question 18

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

Accepted Answer

Before booking your flight from London to Chicago check out the most popular airlines for this route: American Airlines, Finnair or British Airways.

Question 19

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

Accepted Answer

London to Chicago flights have a stopover in Reykjavik most of the time. Dublin sees the second most layovers for non-direct flights flying from London to Chicago.

Question 20

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

Accepted Answer

London to Chicago flights have a stopover in Copenhagen least often.

Question 21

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

Accepted Answer

If you're on a stopover in Reykjavik and looking for things to do, consider visiting Harpa, National Cathedral, or Reykjavik Free Church. Harpa, National Cathedral, and Reykjavik Free Church are located about 23.3 mi, 23.0 mi, and 22.9 mi, respectively from Reykjavik Keflavik Intl. Those on a stopover in Reykjavik in need of a car hire can book one at Reykjavik Keflavik Intl for about £43.

Question 22

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

Accepted Answer

The majority of Dublin visitors spend their time at Bord Gáis Energy Theatre, 3Olympia Theatre, and Royal Dublin Society. Bord Gáis Energy Theatre, 3Olympia Theatre and Royal Dublin Society are located about 5.7 mi, 5.7 mi, and 6.9 mi, respectively from Dublin if you are interested in checking them out. Travellers in need of a car in Dublin can hire one for about £36 per day.

Question 23

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

Accepted Answer

Flying to your destination on a Saturday can be more expensive, but this shouldn’t discourage you from finding affordable options to get to Chicago. Check prices with Cheapflights to find a great deal for your trip.

Question 24

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

Accepted Answer

Users have found that booking a flight from London to Chicago at least 56 days early can save you up to 31% on average compared to booking a flight this week. If booking 56 days before your flight isn’t an option for you, users have found flights from London to Chicago for as little as £492 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as £667 for flights departing within the next 3 days.

Question 25

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

Accepted Answer

February can be a great time to fly to Chicago from London with a flight ticket averaging about £516. Cheapflights users have found deals in the month of February for as cheap as £317. The most expensive prices can be found in the month of July.

Question 26

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

Accepted Answer

It’s typically best to fly out from London to Chicago in the evening. Doing so could potentially save you 25% on the flight price compared to flying in the afternoon, which is usually more expensive.

Question 27

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

Accepted Answer

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

Question 28

How can I find direct flights from London to Chicago?

Accepted Answer

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

Question 29

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

Accepted Answer

Yes. Cheapflights offers flight deals from London 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.

Question 30

How does Cheapflights help users find flights from London to Chicago?

Accepted Answer

Cheapflights helps you search for flights from London to Chicago via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Question 31

Why should you use Cheapflights to find cheap flight tickets from London to Chicago?

Accepted Answer

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Chicago from London.

Question 32

Can Cheapflights find flights from London to Chicago with no change fees?

Accepted Answer

Need flexible booking options for your flight to Chicago from London? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Question 33

Can Cheapflights notify me if prices for flights from London to Chicago become cheaper?

Accepted Answer

Not ready to book yet? You can track prices for flights from London to Chicago on Cheapflights with our Price Alert feature and get notified when better prices are available.

Round-trip from	£423
One-way from	£415
Popular in	July
Cheapest in	February
Average price	£624
Good round-trip deal	£496 or less
Good one-way deal	£572 or less

Airline	Cheapest	Average	Flexibility	On-time
Icelandair	Cheapest£310	Average£489	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
Scandinavian Airlines	Cheapest£352	Average£478	FlexibilityNo cancel fee	On-time77%	Search Scandinavian Airlines flights
TAP AIR PORTUGAL	Cheapest£366	Average£611	FlexibilityNo cancel fee	On-timeN/A	Search TAP AIR PORTUGAL flights
Virgin Atlantic	Cheapest£380	Average£552	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
Aer Lingus	Cheapest£386	Average£571	FlexibilityNo cancel fee	On-timeN/A	Search Aer Lingus flights
Brussels Airlines	Cheapest£392	Average£571	FlexibilityNo cancel fee	On-timeN/A	Search Brussels Airlines flights
Lufthansa	Cheapest£396	Average£576	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
Austrian Airlines	Cheapest£402	Average£579	FlexibilityNo cancel fee	On-time78%	Search Austrian Airlines flights
British Airways	Cheapest£406	Average£567	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
United Airlines	Cheapest£407	Average£557	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights

Cheap flights from London to Chicago from £415

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 26/9. Fares are subject to change and may not be available on all flights or dates of travel.

Cheapflights Tip: The best prices from London to Chicago are usually found in February or March, booked 55 days in advance, depart on a Wednesday or Tuesday and return on a Thursday

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Find flight deals from London to Chicago

Cheapest flights from London to ChicagoExplore the most affordable flight options available from London to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 August 2025.

Explore the most affordable flight options available from London to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 August 2025.

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Best time to book a flight from London to Chicago

Have a flexible travel schedule? Discover the best time to fly to Chicago from London with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from London to Chicago

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

Use this chart to determine the optimal time to book a return flight from London to Chicago. Price data was last updated on 8 August 2025.

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

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

Find hourly flight availability from London 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 20 August 2025.

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

Use this chart to determine the cheapest time to fly return from London to Chicago. Price data was last updated on 16 December 2024.

Weekly flight availability from London to Chicago

Explore weekly flight availability from London 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 20 August 2025.

How much does it cost for a return flight from London to Chicago?

What’s the top stopover airport for flights from London to Chicago?

Share of one-stop return flights from London to Chicago chosen by Cheapflights users in the past 12 months, using the same stopover each way.

What’s the cheapest stopover airport for flights from London to Chicago?

Average return fare for one-stop flights from London to Chicago, chosen by Cheapflights users in the past 12 months, with the same stopover each way.

What’s the fastest stopover option from London to Chicago?

Shortest average travel time for one-stop one-way flights from London to Chicago, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.

Which airport typically offers the quickest stopover for flights from London to Chicago?

Average stopover duration for one-stop one-way flights from London to Chicago, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Reviews of airlines servicing Chicago

Read reviews from past customers who have flown with Finnair, Aer Lingus, andIcelandair from London 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.

Related info for your journey

Find useful and relevant information for your journey from London 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 London to Chicago?

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

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

What are the most popular routes from London to Chicago?

What are the most reliable airlines from London to Chicago?

What are the cheapest flights from London to Chicago?

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

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

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

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

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

How can I find direct flights from London to Chicago?

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

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

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Fly from London to Chicago on these airlines

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Top 10 airlines flying from London to Chicago

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How does Cheapflights help users find flights from London to Chicago?

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Can Cheapflights find flights from London to Chicago with no change fees?

Can Cheapflights notify me if prices for flights from London to Chicago become cheaper?

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Cheapest flights from London to Chicago
Explore the most affordable flight options available from London to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 August 2025.