Question 1

What’s the cheapest stopover airport for flights from Chicago O'Hare Intl Airport to London?

Accepted Answer

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

Question 2

What’s the top stopover airport for flights from Chicago O'Hare Intl Airport to London?

Accepted Answer

Reykjavik (KEF) – chosen by Cheapflights users on 45% of one-stop itineraries from Chicago O'Hare Intl Airport to London on Cheapflights.

Question 3

Which airport typically offers the quickest stopover for flights from Chicago O'Hare Intl Airport to London?

Accepted Answer

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

Question 4

What’s the fastest stopover option from Chicago O'Hare Intl Airport to London?

Accepted Answer

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

Question 5

How long is the flight from Chicago O'Hare Intl Airport to London?

Accepted Answer

For as low as £383, Icelandair can have you in London from Chicago O'Hare Intl Airport in 10h 25m. Chicago O'Hare Intl Airport and London are separated by a distance of 3960 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

Question 6

What are the cheapest airlines flying from Chicago O'Hare Intl Airport to London round-trip?

Accepted Answer

According to our current data, Lufthansa (£355), Aer Lingus (£408), and Finnair (£411) offers the cheapest pricing from Chicago O'Hare Intl Airport to London. Users have found that Lufthansa is 37% cheaper than the other options available to this destination.

Question 7

How far ahead should I book a flight from Chicago O'Hare Intl Airport to London?

Accepted Answer

The price you pay for your flight from Chicago O'Hare Intl Airport to London may vary depending on when you book. For the best chance of a lower fare, look to book 17 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

Question 8

What is the cheapest month to book a flight from Chicago O'Hare Intl Airport to London?

Accepted Answer

Currently, January is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to London (average of £112). Flying from Chicago O'Hare Intl Airport 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 9

What is the cheapest day to fly from Chicago O'Hare Intl Airport to London?

Accepted Answer

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

Question 10

Weekly flight availability from Chicago O'Hare Intl Airport to London

Accepted Answer

The most flights from ORD 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 (48 on average).

Question 11

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 12

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 13

What are the most popular routes from Chicago O'Hare Intl Airport to London?

Accepted Answer

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

Question 14

What are the cheapest flights from Chicago O'Hare Intl Airport to London?

Accepted Answer

Looking for the cheapest flight from Chicago O'Hare Intl Airport to London? While on average our users pay £1,528, our data indicates the cheapest price to be £280. The most popular route (Chicago O'Hare Intl - London Heathrow), is priced around £271.

Question 15

What are the most reliable airlines from Chicago O'Hare Intl Airport to London?

Accepted Answer

No one likes to see their flight delayed. When booking a flight from Chicago O'Hare Intl Airport to London consider choosing Air Canada (63%), Austrian Airlines (63%) or United Airlines (63%) as they are the most reliable in getting you off to your destination on time.

Question 16

What are the most popular airlines that fly from Chicago O'Hare Intl Airport to London?

Accepted Answer

When booking a flight from Chicago O'Hare Intl Airport to London, you may want to consider flying on American Airlines, Finnair or British Airways as they are the most popular for this route.

Question 17

What is the cheapest day to fly round-trip from Chicago O'Hare Intl Airport to London?

Accepted Answer

Flights from Chicago O'Hare Intl Airport to London are found to be more expensive on Friday. This shouldn't discourage you from searching as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to London.

Question 18

How far in advance should I book a flight from Chicago O'Hare Intl Airport to London?

Accepted Answer

To save up to 11% on this flight, we recommend booking at least 60 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Chicago O'Hare Intl Airport to London from £518 1-2 weeks out and tickets from £525 for flights departing within the next 72 hours.

Question 19

What is the cheapest month to fly from Chicago O'Hare Intl Airport to London?

Accepted Answer

Our data shows that February tends to be the cheapest month to fly to London from Chicago O'Hare Intl Airport. Users have commonly found prices around £563 for the month, but tickets can be as low as £342. Due to multiple factors, prepare for potentially higher prices in June.

Question 20

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

Accepted Answer

It’s typically best to fly out from Chicago O'Hare Intl Airport to London in the morning. Doing so could potentially save you 24% on the flight price compared to flying at midday, which is usually more expensive.

Question 21

Can I find deals for flights from O'Hare Intl to London that include hotel bookings?

Accepted Answer

Yes. In addition to deals on O'Hare Intl to London flights, Cheapflights offers holiday packages that include both flights and hotel.

Question 22

How can I find direct flights from O'Hare Intl 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 O'Hare Intl to London.

Question 23

Can I find deals for business class flights from O'Hare Intl to London?

Accepted Answer

Yes. Cheapflights offers flight deals from O'Hare Intl 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 24

How does Cheapflights help users find flights from O'Hare Intl to London?

Accepted Answer

When you search for this flight from O'Hare Intl to London, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Question 25

Why should you use Cheapflights to find cheap flight tickets from O'Hare Intl to London?

Accepted Answer

Cheapflights helps you find that perfect flight to London from O'Hare Intl by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Question 26

Can Cheapflights find flights from O'Hare Intl to London with no change fees?

Accepted Answer

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

Question 27

Can Cheapflights notify me if prices for flights from O'Hare Intl to London become cheaper?

Accepted Answer

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

Round-trip from	£373
One-way from	£167
Popular in	June
Cheapest in	April
Average price	£544
Good round-trip deal	£371 or less
Good one-way deal	£309 or less

Airline	Cheapest	Average	Flexibility	On-time
Lufthansa	Cheapest£355	Average£574	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
Aer Lingus	Cheapest£408	Average£575	FlexibilityNo cancel fee	On-timeN/A	Search Aer Lingus flights
Finnair	Cheapest£411	Average£597	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
Iberia	Cheapest£443	Average£561	FlexibilityNo cancel fee	On-time77%	Search Iberia flights
British Airways	Cheapest£456	Average£622	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
United Airlines	Cheapest£458	Average£740	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
American Airlines	Cheapest£496	Average£624	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights

Cheap flights from Chicago O'Hare Intl Airport 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 O'Hare Intl to London are usually found in April or February, booked 17 days in advance, depart on a Thursday or Wednesday and return on a Wednesday

Cheap flight deals from O'Hare Intl to London

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Cheapest flights from O'Hare Intl to LondonExplore the most affordable flight options available from O'Hare Intl to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 19 August 2025.

Explore the most affordable flight options available from O'Hare Intl to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 19 August 2025.

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Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to London that are best for you.

Best time to book a flight from O'Hare Intl to London

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

Cheapflights Insights

Everything you need to know about your flight from Chicago O'Hare Intl Airport to London

How far ahead should I book a flight from Chicago O'Hare Intl Airport to London?

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

What is the cheapest month to book a flight from Chicago O'Hare Intl Airport to London?

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

Find hourly flight availability from O'Hare Intl 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 19 August 2025.

Weekly flight availability from Chicago O'Hare Intl Airport to London

Explore weekly flight availability from O'Hare Intl 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 19 August 2025.

What’s the top stopover airport for flights from Chicago O'Hare Intl Airport to London?

Share of one-stop return flights from Chicago O'Hare Intl Airport 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 O'Hare Intl Airport to London?

Average return fare for one-stop flights from Chicago O'Hare Intl Airport 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 O'Hare Intl Airport to London?

Shortest average travel time for one-stop one-way flights from Chicago O'Hare Intl Airport 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 O'Hare Intl Airport to London?

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

Reviews of airlines servicing London

Get a feel of what it's like to fly with United Airlines, Icelandair, andIberia from Chicago O'Hare Intl Airport to London by reading reviews from past customers. Users have also rated airlines 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 O'Hare Intl 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 O'Hare Intl Airport to London?

What are the cheapest airlines flying from Chicago O'Hare Intl Airport to London round-trip?

What are the most popular routes from Chicago O'Hare Intl Airport to London?

What are the most reliable airlines from Chicago O'Hare Intl Airport to London?

What are the cheapest flights from Chicago O'Hare Intl Airport to London?

Can I find deals for flights from O'Hare Intl to London that include hotel bookings?

How can I find direct flights from O'Hare Intl to London?

Can I find deals for business class flights from O'Hare Intl to London?

What is the cheapest month to book a flight from Chicago O'Hare Intl Airport to London?

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Top 7 airlines flying from O'Hare Intl to London

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Can Cheapflights find flights from O'Hare Intl to London with no change fees?

Can Cheapflights notify me if prices for flights from O'Hare Intl to London become cheaper?

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Cheapest flights from O'Hare Intl to London
Explore the most affordable flight options available from O'Hare Intl to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 19 August 2025.