Cheap flights from London to Chicago from £232
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 departing on 28/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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SWISS flights from London to Chicago
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Lufthansa flights from London to Chicago
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How to get the cheapest flight ticket from London to Chicago
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 typical price of a round-trip flight between London and Chicago?
What is the cheapest month to fly to Chicago?
The cheapest month to fly to Chicago from London is in February. Flight prices, which tend to average around £423, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of February, then book flights to Chicago from London during March instead. Flights to Chicago in March, while not as cheap as those in February, still average around £444.
What is the cheapest day to depart on your flight to Chicago?
The cheapest day to depart on your flight to Chicago is on a Wednesday when prices can be found for as low as £595. This is often the case because there is less demand to fly during this day of the week. The most expensive day to fly to Chicago is Sunday, with ticket prices averaging around £654.
What is the cheapest time of day to depart on your flight to Chicago?
Flying to Chicago from London in the evening is the least expensive time of day to depart. momondo users have found prices as low as £490 when looking at flights departing in the evening. Flights in the afternoon are often more expensive, with an average ticket price of £656.
What is the cheapest London to Chicago flight route?
Fly from London Heathrow to Chicago O'Hare Intl for the best London - Chicago flight prices
How far in advance should I book a flight to Chicago?
You are more likely to see cheaper flights to Chicago from London when booking weeks ahead of your departure date. In general, you can expect to find flights to Chicago for around £539 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Chicago from London for as low as £512 on momondo.
What cabin class options are available on London to Chicago flights?
There are 4 cabin classes available to choose from on London to Chicago flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
Can stopping save me money on London to Chicago flights?
No. A direct flight is the cheapest option for a flight between London to Chicago.
How have London to Chicago flight prices changed over time?
As of June 2025, prices for London to Chicago flights are approximately 0% cheaper when compared to flights at the same time last year.
How many flights depart from London to Chicago on average per day?
As of June 2025, 46 flights take off from London and land in Chicago each day. The most common flight departure time for this route is 14:00, with 52% of daily flights taking off at midday.
How many flights depart from London to Chicago on average per week?
The number of flights available between London and Chicago is 325 per week as of June 2025. The most frequent departure day is Sat, with 15% of weekly flights leaving on this day.
When to book flights from London to Chicago
Cheap London to Chicago (LON to CHI) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from London to Chicago
How far is London to Chicago by plane?
The distance between London and Chicago is about 3945.2 mi. In terms of flight time, this usually takes a little over 9h 05m.
When did momondo last update prices for flights from London to Chicago?
Prices for flights from London to Chicago refresh daily.
How many operators does momondo search for flights from London to Chicago?
There are 15 operators available for flights from London to Chicago as of June 2025.
How old do you have to be to fly from London to Chicago?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London to Chicago.
What documentation or ID do you need to fly to Chicago?
The required travel and health documents for your Chicago trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Chicago. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from London to Chicago?
momondo data reveals that the most frequently booked plane model on the route from London to Chicago is Boeing 767-300, representing 43.00% of all bookings. The subsequent popular models are Boeing 787-10 Dreamliner at 18.54%, Boeing 777 at 15.52%, and Boeing 777-300ER at 6.33%.
What is the most popular airline from London to Chicago?
momondo data reveals that the most frequently booked airline on the route from London to Chicago is British Airways, representing 42% of all bookings. The subsequent popular airlines are Icelandair at 12%, Lufthansa at 11%, and Finnair at 9%.
Best airlines flying from London to Chicago
Compare and see reviews for airlines that fly from London to Chicago with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom £307 | Free Cancellation | Rating 7.0 514 reviews | |||
| PriceFrom £346 | Free Cancellation | Rating 7.3 1,413 reviews | |||
| PriceFrom £360 | Free Cancellation | Rating 7.1 1,911 reviews | |||
| PriceFrom £377 | Free Cancellation | Rating 7.4 654 reviews | |||
| PriceFrom £386 | Free Cancellation | Rating 7.3 352 reviews | |||
| PriceFrom £390 | Free Cancellation | Rating 6.8 7,201 reviews | |||
| PriceFrom £393 | Free Cancellation | Rating 7.6 807 reviews | |||
| PriceFrom £395 | Free Cancellation | Rating 7.4 8,849 reviews | |||
| PriceFrom £396 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom £400 | Free Cancellation | Rating 6.6 7,081 reviews |
Austrian Airlines Flights From London to Chicago
Austrian Airlines operates around 21 flights from London to Chicago every week. The average price of these flights found in the last 72 hours has been £786, but momondo users have found Austrian Airlines deals from London to Chicago from as low as £539 round-trip. Austrian Airlines has been scored 7.6/10 in 807 reviews.
Finnair Flights From London to Chicago
Finnair (7.6/10 from 1,299 reviews) operates around 27 flights from London to Chicago in any given week. The average Finnair airfare for this route is around £782, with deals from around £599 rare but found on momondo. Referenced prices are for round-trip London to Chicago flight searches in the last 72 hours.
Why use momondo?
Why should I use momondo to find a flight deal from London to Chicago?
To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Chicago from London.
Can I find flights from London to Chicago with flexible booking policies on momondo?
Flights from London to Chicago with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.
How can momondo help me find flights from London to Chicago?
Once all potential London to Chicago flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.
I’m not ready to book a flight from London to Chicago right now. Can momondo alert me if prices change?
Of course. momondo tracks the price of London to Chicago flights. All you need is a valid email address and we will do the rest; it is that quick and easy.