Cheap flights from London to Chicago O'Hare Intl Airport from $255
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London to Chicago O'Hare Intl Airport departing on 4/22. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Discover deals from 900+ travel sites with momondo.
Big names and deals
Big names and deals
Search 100s of travel sites to compare prices.Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customize your results.Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.Price Alerts
Price Alerts
Not ready to book? to track prices.Find the cheapest flights from London to Chicago
Cheap round-trip flights
Cheap one-way flights
Cheap last minute flights
Cheap direct flights
Icelandair flights from London to Chicago O'Hare Intl Airport
Our best Icelandair deals on London to Chicago O'Hare Intl Airport flight tickets
Lufthansa flights from London to Chicago O'Hare Intl Airport
Our best Lufthansa deals on London to Chicago O'Hare Intl Airport flight tickets
See travel insights to Chicago from
How to get the cheapest flight ticket from London to Chicago O'Hare Intl Airport
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to Chicago O'Hare Intl Airport?
The month of April is another great option to travel to Chicago O'Hare Intl Airport, with average flight prices from London averaging around $667.
What is the cheapest day to depart on your flight to Chicago O'Hare Intl Airport?
The cheapest day to depart on your flight to Chicago O'Hare Intl Airport is on a Wednesday when prices can be found for as low as $814. This is often the case because there is less demand to fly during this day of the week. On the other hand, Sunday is the most expensive day to depart from London because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $967.
What is the cheapest time of day to depart on your flight to Chicago O'Hare Intl Airport?
Flying to Chicago O'Hare Intl Airport from London in the evening is the least expensive time of day to depart. momondo users have found prices as low as $695 when looking at flights departing in the evening. Try not to purchase tickets in the afternoon because they tend to be around $955. Of course, these prices can vary depending on the time of year and what airport you fly to.
What is the cheapest London to Chicago O'Hare Intl flight route?
Fly from London Heathrow to Chicago O'Hare Intl for the best London - Chicago O'Hare Intl flight prices
How far in advance should I book a flight to Chicago O'Hare Intl Airport?
You are more likely to see cheaper flights to Chicago O'Hare Intl Airport from London when booking 5 weeks ahead of your departure date. In general, you can expect to find flights to Chicago O'Hare Intl Airport for around $740 when searching 5 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Chicago O'Hare Intl Airport from London for as low as $722 on momondo.
What cabin class options are available on London to Chicago O'Hare Intl flights?
There are 4 cabin classes available to choose from on London to Chicago O'Hare Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
What is the cheapest airline that flies from London to Chicago O'Hare Intl?
TAP AIR PORTUGAL is the most popular carrier operating from London to Chicago O'Hare Intl
What airlines fly to Chicago O'Hare Intl Airport?
British Airways, American Airlines and Aer Lingus are the top three most popular airlines that fly to Chicago O'Hare Intl Airport from London according to our data. British Airways is the first choice among our users, with 41% of people opting to fly with this airline when traveling to Chicago O'Hare Intl Airport. Keep in mind that there are 11 different airlines that fly to Chicago O'Hare Intl Airport on a routine basis, so you have a few additional options to choose from.
How many flights depart from London to Chicago O'Hare Intl Airport on average per day?
19 flights are operational daily from London to Chicago O'Hare Intl Airport as of March 2025. The most popular departure time for this route is 11:00AM, with 51% of flights per day taking off at noon.
How many flights depart from London to Chicago O'Hare Intl Airport on average per week?
As of March 2025, 135 flights take off from London and land in Chicago O'Hare Intl Airport each week. The most common flight departure day for this route is Wed, with 27% of weekly flights taking off on this day.
When to book flights from London to Chicago O'Hare Intl Airport
Cheap London to Chicago O'Hare Intl Airport (LON to ORD) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from London to Chicago O'Hare Intl Airport
How far is London to Chicago O'Hare Intl by plane?
A flight from London to Chicago O'Hare Intl will travel around 3950.9 mi. Flights usually cover this in 8h 25m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from London to Chicago O'Hare Intl Airport?
Prices for flights from London to Chicago O'Hare Intl Airport are updated daily.
How many operators does momondo search for flights from London to Chicago O'Hare Intl Airport?
As of March 2025, there are 11 operators available to choose from for flights from London to Chicago O'Hare Intl Airport.
How old do you have to be to fly from London to Chicago O'Hare Intl Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London to Chicago O'Hare Intl Airport.
What documentation or ID do you need to fly to Chicago O'Hare Intl Airport?
The travel and health documents you'll need for your trip to Chicago O'Hare Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Chicago O'Hare Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from London to Chicago O'Hare Intl Airport?
momondo data reveals that the most frequently booked plane model on the route from London to Chicago O'Hare Intl Airport is Boeing 767-300, representing 29.09% of all bookings. The subsequent popular models are Boeing 787-10 Dreamliner at 21.90%, Boeing 777 at 19.11%, and Airbus A350-900 at 6.92%.
What is the most popular airline from London to Chicago O'Hare Intl Airport?
Based on momondo bookings for flights between London and Chicago O'Hare Intl Airport, the leading airline is British Airways, making up 28% of the total bookings. Other popular airlines include American Airlines with 23%, Aer Lingus with 12%, and United Airlines with 8%.
Best airlines flying from London to Chicago O'Hare Intl Airport
Compare and see reviews for airlines that fly from London to Chicago O'Hare Intl Airport with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $451 | Free Cancellation | Rating 7.0 474 reviews | |||
| PriceFrom $483 | Free Cancellation | Rating 7.1 1,827 reviews | |||
| PriceFrom $492 | Free Cancellation | Rating 7.3 1,325 reviews | |||
| PriceFrom $562 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $562 | Free Cancellation | Rating 7.4 8,603 reviews | |||
| PriceFrom $573 | Free Cancellation | Rating 6.6 6,712 reviews | |||
| PriceFrom $574 | Free Cancellation | Rating 7.0 1,062 reviews | |||
| PriceFrom $582 | Free Cancellation | Rating 7.0 2,649 reviews | |||
| PriceFrom $613 | Free Cancellation | Rating 7.6 1,267 reviews | |||
| PriceFrom $660 | Free Cancellation | Rating 6.7 6,956 reviews |
Finnair Flights From London to Chicago O'Hare Intl Airport
Finnair flies from London to Chicago O'Hare Intl Airport around 15 times per week, with 1,267 momondo users rating the airline 7.6/10. The cheapest Finnair deal from London to Chicago O'Hare Intl Airport in the last 72 hours was $613 (round-trip), much lower than the average airfare cost of $838 for Finnair flights on this route.
Austrian Airlines Flights From London to Chicago O'Hare Intl Airport
Across 769 Austrian Airlines reviews on momondo, the average score is 7.5/10. Austrian Airlines flies from London to Chicago O'Hare Intl Airport about 7 times each week, with ticket deals ranging from $663 to $987. Price data is based on momondo searches in the last 72 hours.
Traveling to a place near Chicago?
Book flights to Chicago if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from London to Chicago?
We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from London to Chicago for you.
Can I find flights from London to Chicago with flexible booking policies on momondo?
Yes. momondo allows you to filter the results for London to Chicago flights to just show those with flexible booking policies.
How can momondo help me find flights from London to Chicago?
momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from London to Chicago.
I’m not ready to book a flight from London to Chicago right now. Can momondo alert me if prices change?
If you are not ready to book a flight from London to Chicago now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Chicago and let you know when they change.