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

Airfare is below average for this route at the moment. Chicago to London flights typically cost between £454 and £654 in January. The cheapest return flight price found within the last 3 days was £372 on Scandinavian Airlines (15 Jan-19 Jan).

Question 1

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

Accepted Answer

Flights via Amsterdam (AMS) offer the fastest connection on this route, with an average stopover time of 1h 08m.

Question 2

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

Accepted Answer

Airfare is below average for this route at the moment.Chicago to London flights typically cost between £454 and £654 in January.
The cheapest return flight price found within the last 3 days was £372 on Scandinavian Airlines (15 Jan-19 Jan).

Question 3

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

Accepted Answer

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

Question 4

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

Accepted Answer

Lisbon (LIS) is the most affordable one-stop option, with an average return flight price of £331.

Question 5

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

Accepted Answer

Flights via Amsterdam (AMS) have the shortest average one-way travel time for one-stop routes: 9h 50m.

Question 6

How long is the flight from Chicago to London?

Accepted Answer

Icelandair, SWISS, and Delta can get you from Chicago to London in just under 10h 25m. Your travel time can differ by up to 4h 45m. There are 3960 mi between Chicago and London. This flight may include one or multiple stops.

Question 7

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

Accepted Answer

Our cheapest airline available from Chicago to London is Lufthansa. Our recent data shows that you can find tickets from as low as £355 on this airline. Additional options worth looking into are Aer Lingus and Finnair, starting at £407 and £410 round-trip. These flights start at 36% lower than the current average price 3 months from now.

Question 8

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 83 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 9

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

Accepted Answer

Currently, January is the cheapest month in which you can book a flight from Chicago to London (average of £112). Flying from Chicago to London in August is currently the most expensive (average of £164). 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 10

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

Accepted Answer

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

Question 11

Weekly flight availability from Chicago to London

Accepted Answer

The most flights from CHI to LON are scheduled on a Monday (57 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (51 on average).

Question 12

E

Accepted Answer

In terms of precipitation, rainfall in London ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London when rainfall is around 40.0 mm.

Question 13

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 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

Question 14

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 15

What are the cheapest flights from Chicago to London?

Accepted Answer

On average you can expect to pay £1,525 for a flight from Chicago to London. The cheapest flight overall is £279 while the most popular route, (Chicago O'Hare Intl - London Heathrow) is currently priced at £271.

Question 16

What are the most reliable airlines from Chicago to London?

Accepted Answer

Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Chicago to London on time: Air Canada (63%), Austrian Airlines (63%), United Airlines (63%).

Question 17

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

Accepted Answer

Consider American Airlines, Finnair or British Airways when booking your flight. These represent the most popular airlines when flying from Chicago to London.

Question 18

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

Accepted Answer

Users have found that leaving on a Wednesday can be a cost-effective option. It’s possible to save up to 27% on your flight compared to booking on days when demand is much higher.

Question 19

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

Accepted Answer

To save on the cost of your flight from Chicago to London, book at least 60 days before your planned departure. Booking around this time can save you about 11% on the cost of this flight compared to booking a flight leaving this week. We have found prices from £517 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as £524.

Question 20

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

Accepted Answer

Our data shows that February tends to be the cheapest month to fly to London from Chicago. Users have commonly found prices around £562 for the month, but tickets can be as low as £341. Due to multiple factors, prepare for potentially higher prices in June.

Question 21

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

Accepted Answer

Unlike at midday, when flights are generally more expensive, you can save up to 39% on flights from Chicago to London by exploring options for tickets in the morning.

Question 22

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 holiday packages that include both flights and hotel.

Question 23

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 24

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.

Question 25

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

Accepted Answer

Cheapflights makes it easy to find Chicago to London flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Question 26

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

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 London from Chicago.

Question 27

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

Accepted Answer

Yes! Cheapflights helps users easily find flights from Chicago to London with no change fees.

Question 28

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

Accepted Answer

Yes! Start tracking prices for Chicago to London flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

Round-trip from	£372
One-way from	£167
Popular in	June
Cheapest in	February
Average price	£526
Good round-trip deal	£369 or less
Good one-way deal	£308 or less

Airline	Cheapest	Average	Flexibility	On-time
Lufthansa	Cheapest£355	Average£573	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
Aer Lingus	Cheapest£407	Average£574	FlexibilityNo cancel fee	On-timeN/A	Search Aer Lingus flights
Finnair	Cheapest£410	Average£596	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
Iberia	Cheapest£442	Average£560	FlexibilityNo cancel fee	On-time77%	Search Iberia flights
British Airways	Cheapest£455	Average£621	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
United Airlines	Cheapest£458	Average£739	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
American Airlines	Cheapest£495	Average£623	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights

Cheap flights from Chicago to London from £167

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 28/11. Fares are subject to change and may not be available on all flights or dates of travel.

Cheapflights Tip: The best prices from Chicago to London are usually found in February or September, booked 83 days in advance, depart on a Thursday or Wednesday and return on a Wednesday

Cheap flight deals from Chicago to London

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Find flight deals from Chicago to London

Cheapest flights from Chicago to LondonExplore 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 18 August 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 18 August 2025.

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Best time to book a flight from Chicago to London

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

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

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

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

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

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

Find hourly flight availability from Chicago to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 18 August 2025.

Weekly flight availability from Chicago to London

Explore weekly flight availability from Chicago to London. 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 18 August 2025.

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

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

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

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

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

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

Shortest average travel time for one-stop one-way flights from Chicago to London, 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 Chicago to London?

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

Reviews of airlines servicing London

Read reviews from past customers who have flown with United Airlines, Icelandair, andIberia from Chicago to London. 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 Chicago to London. 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 Chicago to London?

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

What are the most popular routes from Chicago to London?

What are the most reliable airlines from Chicago to London?

What are the cheapest flights from Chicago to London?

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

How can I find direct flights from Chicago to London?

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

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

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Top 7 airlines flying from Chicago to London

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

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

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

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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 18 August 2025.