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Cheap flights from London Heathrow to Chicago

Compare London Heathrow to Chicago flight deals

Find the cheapest month or even day of the year to fly to Chicago

Book the best Chicago fare with no extra fees

Flight deals from London Heathrow to Chicago

Looking for a cheap last-minute deal or the best return flight from London Heathrow to Chicago? Find the lowest prices on one-way and return tickets right here.
Chicago.P25,714 per passenger.Departing Fri, 26 Sep, returning Mon, 6 Oct.Return flight with SWISS.Outbound indirect flight with SWISS, departs from London Heathrow on Fri, 26 Sep, arriving in Chicago O'Hare International.Inbound indirect flight with SWISS, departs from Chicago O'Hare International on Mon, 6 Oct, arriving in London Heathrow.Price includes taxes and charges.From P25,714, select.
Chicago.P25,857 per passenger.Departing Sun, 1 Mar, returning Sat, 7 Mar.Return flight with Scandinavian Airlines.Outbound indirect flight with Scandinavian Airlines, departs from London Heathrow on Sun, 1 Mar, arriving in Chicago O'Hare International.Inbound indirect flight with Scandinavian Airlines, departs from Chicago O'Hare International on Sat, 7 Mar, arriving in London Heathrow.Price includes taxes and charges.From P25,857, select.
Chicago.P26,652 per passenger.Departing Sat, 13 Dec, returning Sun, 28 Dec.Return flight with Scandinavian Airlines.Outbound indirect flight with Scandinavian Airlines, departs from London Heathrow on Sat, 13 Dec, arriving in Chicago O'Hare International.Inbound indirect flight with Scandinavian Airlines, departs from Chicago O'Hare International on Sun, 28 Dec, arriving in London Heathrow.Price includes taxes and charges.From P26,652, select.
Chicago.P27,006 per passenger.Departing Fri, 7 Nov, returning Mon, 17 Nov.Return flight with Scandinavian Airlines.Outbound indirect flight with Scandinavian Airlines, departs from London Heathrow on Fri, 7 Nov, arriving in Chicago O'Hare International.Inbound indirect flight with Scandinavian Airlines, departs from Chicago O'Hare International on Mon, 17 Nov, arriving in London Heathrow.Price includes taxes and charges.From P27,006, select.
Chicago.P27,631 per passenger.Departing Fri, 3 Oct, returning Fri, 10 Oct.Return flight with Aer Lingus.Outbound indirect flight with Aer Lingus, departs from London Heathrow on Fri, 3 Oct, arriving in Chicago O'Hare International.Inbound indirect flight with Aer Lingus, departs from Chicago O'Hare International on Fri, 10 Oct, arriving in London Heathrow.Price includes taxes and charges.From P27,631, select.
Chicago.P27,768 per passenger.Departing Sun, 25 Jan, returning Fri, 30 Jan.Return flight with Aer Lingus.Outbound indirect flight with Aer Lingus, departs from London Heathrow on Sun, 25 Jan, arriving in Chicago O'Hare International.Inbound indirect flight with Aer Lingus, departs from Chicago O'Hare International on Fri, 30 Jan, arriving in London Heathrow.Price includes taxes and charges.From P27,768, select.
Chicago.P27,768 per passenger.Departing Sun, 30 Nov, returning Sun, 7 Dec.Return flight with Aer Lingus.Outbound indirect flight with Aer Lingus, departs from London Heathrow on Sun, 30 Nov, arriving in Chicago O'Hare International.Inbound indirect flight with Aer Lingus, departs from Chicago O'Hare International on Sun, 7 Dec, arriving in London Heathrow.Price includes taxes and charges.From P27,768, select.
Chicago.P27,770 per passenger.Departing Sat, 7 Feb, returning Sun, 22 Feb.Return flight with Aer Lingus.Outbound indirect flight with Aer Lingus, departs from London Heathrow on Sat, 7 Feb, arriving in Chicago O'Hare International.Inbound indirect flight with Aer Lingus, departs from Chicago O'Hare International on Sun, 22 Feb, arriving in London Heathrow.Price includes taxes and charges.From P27,770, select.

Find the cheapest month to fly from London Heathrow to Chicago

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like London Heathrow to Chicago flights are currently cheapest in March.
Aug
from P36,427
Sep
from P27,907
Oct
from P27,631
Nov
from P27,006
Dec
from P26,652
Jan
from P27,768
Feb
from P27,770
Mar
from P25,857
Apr
from P29,313
May
from P29,392
Jun
from P31,363
Jul
from P37,225

Direct flights from London Heathrow to Chicago

Alternative London Heathrow to Chicago routes

Looking for the cheapest, fastest or easiest route from London Heathrow to Chicago? You could fly into the following airports instead.

London to Chicago: Flight information

The things to know before you go.
Cheapest flight foundP25,714
Cheapest month to flySeptember
Average flight time8 hrs, 59 mins
Most popular airlineAlaska Airlines
Average flights per week296

Finding cheap flights from London Heathrow to Chicago: Frequently asked questions

There are 4 airports in Chicago: Chicago Midway, Chicago O'Hare International, Chicago Dupage County, and Chicago Rockford.
The best price we found for a return flight from London Heathrow to Chicago is P25,714. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
8 hours and 59 minutes is the average flight time from London Heathrow to Chicago.
Alaska Airlines, American Airlines and British Airways fly direct from London Heathrow to Chicago.
As of August 2025, there are 296 flights per week flying from London Heathrow to Chicago.
The cheapest month to fly from London Heathrow to Chicago is usually September.
If you're flying from London Heathrow Airport, the cheapest airport near Chicago is Chicago O'Hare International – which is 25.4 km away from the centre of Chicago. We've found flights into this airport from P25,714.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from London Heathrow Airport to Chicago on Friday, 26 September 2025.
Yes – the average flight time is 8 hours and 59 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Chicago but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Chicago is around 40 days in advance, so don’t leave your flight to the last minute.
In August, the average temperature is usually around 22°C. July is typically the warmest month in Chicago, when it usually averages around 26°C. You can expect the least rain in January. The coldest month is January, with temperatures averaging -8°C. The rainiest month is August.
Currently, SWISS and Finnair offer the cheapest flight tickets to Chicago.

Flying from London Heathrow Airport (LHR) to Chicago: what you need to know

  • The average duration of a direct flight from London Heathrow Airport to Chicago is 7 hours 55 minutes.

  • Chicago is five hours behind London, where London Heathrow Airport is located. Chicago runs on the UTC-5 timezone.

  • With 54 weekly flights between the two airports, London Heathrow Airport (LHR) to O'Hare International Airport (ORD) is the most popular route. United Airlines operates the earliest flight at 08:30. If you're eager to make the most of your day before taking off, the latest departure from LHR to ORD is with British Airways at 15:45.

  • For a smooth journey, turn up at the airport two hours ahead of international flights and one hour before domestic departures. This will give you plenty of time to catch your LHR to Chicago flight.

  • Longer lines at security and check-in are likely if you're heading away during high season, so give yourself even more breathing space. A good rule of thumb for peak times? Arrive up to four hours ahead for international flights and at least two hours for domestic departures.

  • You can book a direct London Heathrow Airport to Chicago ticket. Begin your journey at LHR and end it at O'Hare International Airport (ORD).

  • You'll find a variety of carriers that operate direct flights from London Heathrow Airport to Chicago, including:

  • Think about adding a stopover to potentially save on your plane ticket from LHR to Chicago. All you need to do is uncheck 'Direct flights only' during your search. Break up your trip (and maybe save some cash) by stopping at one of these popular airports:

    • Los Angeles International Airport (LAX)

    • Logan International Airport (BOS)

    • Pearson International Airport (YYZ)

  • Travelling from central London to LHR takes around 1 hour on public transport. If you drive, ride-share or grab a cab, you'll cover the 26 kilometres in 55 minutes or so, depending on traffic conditions.

  • Booked an early flight from London Heathrow Airport to Chicago? Avoid rushing to the airport (and sneak in some extra snooze time) by choosing one of these stays close to LHR:

  • Of the flights that depart from London Heathrow Airport, 68.18% land on time at their destination.

How to find the cheapest flights from London Heathrow Airport (LHR) to Chicago

  • P19,911 is the cheapest price we've seen for a one-way London Heathrow Airport to Chicago flight. A return ticket right now is P25,714. Depending on when you book and the availability, these fares could change.

  • Book one month before flying. Pricing trends show that this is the ideal window for finding cheap flights from LHR to Chicago.

  • Plan your trip for May. That's the best month for landing an incredible deal on London Heathrow Airport to Chicago tickets. If you have flexibility with your dates, use the 'Whole month' tool to access the lowest price across every month.

  • Finding a cheap flight from LHR to Chicago is easy with Price Alerts. Simply set up one of these automatic notifications and we'll get in touch as soon as a lower fare pops up.

  • Tailor your flights with filters. Pick your preferred arrival and departure times, airlines and total journey duration. You can also sort results by 'Fastest,' 'Best' or 'Cheapest' flights from London Heathrow Airport to Chicago.

Airports in Chicago

O'Hare International Airport (ORD)

  • O'Hare International Airport (ORD) is around 40 kilometres from the centre of Chicago. If you're grabbing a cab or a ride-share, the drive will take roughly 35 minutes.

  • It typically takes 55 minutes when travelling by public transport.

  • Consider booking a hotel close to ORD if you're coming in on a late flight from London Heathrow Airport to Chicago. Settle into one of these options and make your arrival easier:

  • Follow your own route with an O'Hare International Airport rental car. Pick up your wheels from Routes Car Rentals, Dollar or Budget and experience more of Chicago and beyond.

  • Reserving your ride from O'Hare International Airport about four weeks in advance of your flight from LHR to Chicago can help you secure the lowest rate.

  • The street address for ORD is 10000 West O'Hare.

Chicago Midway International Airport (MDW)

  • The centre of Chicago is located around 19 kilometres from Chicago Midway International Airport (MDW). Once your flight from London Heathrow Airport to Chicago has landed and you've made your way through the terminal, expect a drive of about 20 minutes.

  • If you travel by public transport, you'll reach the centre in 45 minutes or so.

  • After stepping off your LHR to Chicago flight, unwind at a hotel close to MDW. These are some comfortable options that'll help you get into relaxation mode:

  • Dollar, Hertz and Budget make picking up a Chicago Midway International Airport rental car quick and easy. These trusted companies are located in or around the terminal and will get you on your way in no time.

  • Call dibs on the best options. Securing your ride from MDW four weeks in advance often means more savings and a bigger choice of vehicles.

  • The address for Chicago Midway International Airport is 5700 South Cicero.

Chicago Rockford International Airport (RFD)

  • Set your sights on the city centre after your flight from London Heathrow Airport to Chicago has landed. Central Chicago is around 137 kilometres from Chicago Rockford International Airport (RFD) and takes roughly 1 hour 25 minutes to reach by cab or ride-share.

  • Public transport will take you there in about 4 hours 15 minutes.

  • Book a hotel near RFD and get from baggage claim to your bed in a snap. Whether you have a late LHR to Chicago flight or just want to simplify your travel plans, these accommodation options will have you settling in quickly:

  • Start your journey without stressing over how to get to where you're going with a Chicago Rockford International Airport rental car. Find your perfect set of wheels with trusted names here like Budget, Alamo and National.

  • If you're looking for a specific type of vehicle, booking early increases your chances of snagging what you want. Secure your ride from RFD a few weeks ahead of your flight from London Heathrow Airport to Chicago.

  • Chicago Rockford International Airport's official address is 2 Airport Cir.

Best time to go to Chicago

  • Travel to Chicago in high season if you prefer a lively atmosphere, but remember that hotel prices are generally higher. Alternatively, book flights from London Heathrow Airport to Chicago in the off-season when prices are cheaper and it's not as busy.

  • The warmest month in Chicago is July, with temperatures ranging between 15ºC (59ºF) and 29ºC (84ºF). Book your London Heathrow Airport to Chicago plane ticket then if that's your ideal forecast.

  • If you like cooler conditions, search for a cheap ticket from LHR to Chicago in January when temperatures average between -12ºC (10ºF) and 3ºC (37ºF).

More about Chicago

  • Start your Chicago trip off on the right foot by choosing the perfect place to stay. After booking your flight from London Heathrow Airport to Chicago, explore our range of accommodation options including:

  • There are so many things to do and see in this city it can be hard to figure out where to begin. Art Institute of Chicago, Millennium Park and LandShark Beer Garden at Navy Pier are highlights which should be on every Chicago itinerary.

Explore more of United States

  • You've done Chicago, now it's time to discover more of United States. Travel about 451 kilometres south-east to Columbus to tick off its leading attractions. From Franklin Park Conservatory and Botanical Gardens to Ohio Statehouse and German Village, you'll have a full itinerary ahead.

  • Indianapolis is another sought-after destination in United States and is around 257 kilometres south-east of Chicago. No trip is complete without dropping by The Children's Museum of Indianapolis, Indianapolis Museum of Art and Indianapolis Zoo.

Plan the rest of your trip from London to Chicago

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.