Question 1

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

Accepted Answer

According to our current data, American Airlines (£479), TAP AIR PORTUGAL (£479), and British Airways (£480) offers the cheapest pricing from Chicago O'Hare Intl Airport to London. Users have found that American Airlines is 16% cheaper than the other options available to this destination.

Question 2

What are the cheapest airlines to fly from Chicago O'Hare Intl Airport to London one-way?

Accepted Answer

The cheapest airline one-way is Scandinavian Airlines, with whom users have recently found tickets for as low as £257. However, be on the lookout for offers from JetBlue and TAP AIR PORTUGAL, as they are both options that can get you from Chicago O'Hare Intl Airport to London for a low price.

Question 3

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 82 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

Question 4

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 5

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 Wednesday mornings when fares are most often at their lowest. Sunday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Question 6

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 (51 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (31 on average).

Question 7

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 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 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 9

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 10

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 £1,858, our data indicates the cheapest price to be £284. The most popular route (Chicago O'Hare Intl - London Heathrow), is priced around £241.

Question 11

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 Royal Jordanian (70%), Air Canada (67%) or Austrian Airlines (67%) as they are the most reliable in getting you off to your destination on time.

Question 12

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 13

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 14

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

Accepted Answer

To save up to 5% on this flight, we recommend booking at least 49 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 £522 1-2 weeks out and tickets from £522 for flights departing within the next 72 hours.

Question 15

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 £559 for the month, but tickets can be as low as £345. Due to multiple factors, prepare for potentially higher prices in June.

Question 16

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 afternoon. Doing so could potentially save you 13% on the flight price compared to flying at midday, which is usually more expensive.

Question 17

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 18

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 19

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 20

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 21

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 22

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 23

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	£479
One-way from	£257
Popular in	June
Cheapest in	April
Average price	£752
Good round-trip deal	£573 or less
Good one-way deal	£315 or less

Airline	Cheapest	Average	Flexibility	On-time
Aer Lingus	Cheapest£404	Average£569	FlexibilityNo cancel fee	On-timeN/A	Search Aer Lingus flights
Finnair	Cheapest£406	Average£591	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
Iberia	Cheapest£438	Average£568	FlexibilityNo cancel fee	On-time77%	Search Iberia flights
United Airlines	Cheapest£454	Average£689	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
British Airways	Cheapest£456	Average£639	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Lufthansa	Cheapest£476	Average£792	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
American Airlines	Cheapest£504	Average£747	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights

Cheap flights from Chicago O'Hare Intl Airport to London from £257

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 5/8. 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 82 days in advance, depart on a Wednesday or Thursday and return on a Wednesday

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Find flight deals from O'Hare Intl to London

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 3 July 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 3 July 2025.

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

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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 27 June 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 3 July 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 3 July 2025.

Reviews of airlines servicing London

Get insights into the airlines that provide service to London. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to London. Reviews last updated 3 July 2025.

Get a feel of what it's like to fly with Delta, Austrian Airlines, andSWISS 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.

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

What are the cheapest airlines to fly from Chicago O'Hare Intl Airport to London one-way?

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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Alternative routes for O'Hare Intl 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 3 July 2025.