Cheap flight tickets from Chicago to London

Compare Chicago to London flight deals

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

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Find the cheapest month to fly from Chicago to London

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Chicago to London flights are currently cheapest in April.

Chicago to London: Alternative routes

Compare routes from Chicago to London below. You may find an airport to fly into that's cheaper, faster, or easier than London.

Chicago to London: Flight information

The things to know before you go.
Cheapest flight foundRM2,058
Cheapest month to flyApril

Finding cheap flights from Chicago to London: Frequently asked questions

The best price we found for a return flight from Chicago to London is RM2,058. 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.
Currently, there are no airlines that fly direct from Chicago to London. But we found flights with one stop from RM2,058.
As of February 2026, there are no flights flying from Chicago to London.
The cheapest month to fly from Chicago to London is usually April.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Chicago to London Airport on Wednesday, 8 April 2026.
No airlines currently offer direct flights between Chicago and London Airport. Most routes have one or more stops.
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 London 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 London is around 40 days in advance, so don’t leave your flight to the last minute.
The cheapest airline that flies to London is Air Canada .

Travelling from Chicago to London International Airport (YXU): What you need to know

  • There are two main airports you can start your journey from in Chicago. Explore your options departing from O'Hare International Airport (ORD) or Chicago Midway International Airport (MDW) when planning your flight from Chicago to London International Airport (YXU).

  • London International Airport is located in London. The city operates on the UTC-4 timezone and is one hour ahead of Chicago.

  • Get to the airport on time so you don't miss your flight from Chicago to YXU. Be there at least two hours ahead for international flights and an hour early for domestic departures to avoid the mad dash to your gate.

  • High season means busier airports, so aim to get there even earlier. Give yourself at least two hours before a domestic flight and four hours for international journeys to stick to your schedule.

Airports in Chicago

O'Hare International Airport (ORD)

  • Consider adding a stopover to find cheap flights from Chicago to YXU. Just uncheck 'Direct flights only' when searching for departures from O'Hare International Airport (ORD). Take a break from travelling at one of these airports:

    • Pearson International Airport (YYZ)

    • Calgary International Airport (YYC)

    • Cancun International Airport (CUN)

  • Travelling from central Chicago to ORD takes about 55 minutes on public transport. If you ride-share, drive or take a cab, you'll cover the 40 kilometres in 35 minutes or so, depending on traffic conditions.

  • Planning to catch an early flight from Chicago to London International Airport? Avoid the mad dash to the terminal (and enjoy a few extra z's) by choosing one of these hotels near O'Hare International Airport:

  • Of the departures from O'Hare International Airport, 74.85% land on time at their destination.

  • ORD is located at 10000 West O'Hare.

Chicago Midway International Airport (MDW)

  • MDW is around 19 kilometres from central Chicago. It'll take you 20 minutes or so to get to the airport in a car from the city centre. Public transport takes approximately 45 minutes.

  • Want to treat yourself to an extra night away before boarding your Chicago to YXU flight? Check in to a hotel near Chicago Midway International Airport before your break officially starts. These stays have a room with your name on it:

  • When it comes to keeping flights punctual, Chicago Midway International Airport has an on-time arrival performance of 77.88%.

  • You'll find MDW at 5700 South Cicero.

Chicago Rockford International Airport (RFD)

  • RFD is roughly 137 kilometres from central Chicago. Driving from the city centre to the terminal takes about 1 hour 25 minutes. If you're planning to use public transport, expect a journey of around 4 hours 15 minutes.

  • Rest a little longer, move a little slower, and still make your Chicago to London International Airport flight without having to rush. These hotels near Chicago Rockford International Airport make departure day a breeze if you're setting off early:

  • Airports have an on-time performance rating that measures how often flights get to their destinations as expected. At RFD, that figure is 76.19%.

  • Chicago Rockford International Airport is located at 2 Airport Cir.

About London International Airport (YXU)

Getting from London International Airport (YXU) to central London

  • Central London is roughly 10 kilometres from London International Airport. Travel times by cab or car hire will vary based on time of day and traffic conditions, so do some research ahead of your trip.

  • Travelling on public transport will take you around 55 minutes.

How to find the cheapest flights from Chicago to London International Airport (YXU)

  • RM1,028 is currently the lowest price for a one-way ticket from Chicago to London International Airport. Return flights start from RM2,058. These prices can change depending on demand.

  • Don't leave everything to the last moment. You're more likely to walk away with cheap flights from Chicago to YXU if you book ahead. Airlines often offer some great early bird deals.

  • The 'Whole month' search tool will show you the cheapest Chicago to London International Airport tickets across each month. It's a great way to snap up a bargain if your plans aren't set in stone.

  • Be the first to know about deals for plane tickets from Chicago to YXU by setting up a Price Alert. We'll send you an email or notification through the app when a lower fare pops up.

  • Discover the best deal on a flight from Chicago to London International Airport with the help of the filters. Pick your preferred arrival and departure times, airlines and number of stops. You can also sort your results by 'Fastest,' 'Best' or 'Cheapest.'

The best time to fly from Chicago to London International Airport (YXU)

  • It's time to work out when to book your flight from Chicago to London International Airport (YXU). August is the busiest month to travel to London. If you're all about a more relaxed kind of trip, think about going in November.

  • Lock in a Chicago to YXU plane ticket departing in July if you want to explore the city during its warmest month. Expect temperatures in London to range from 13ºC (55ºF) to 27ºC (81ºF).

  • Look for cheap tickets from Chicago to London International Airport in January if you'd rather travel when it's cooler. Temperatures are at their lowest then, ranging between -13ºC (9ºF) and 2ºC (36ºF).

More about London

  • When it comes to searching for somewhere to lay your head, you'll find the most popular stays in London right here. Check out these options once you've booked your flight from Chicago to London International Airport:

  • You'll find plenty of terrific things to do in London when you're in the mood to sightsee. Head straight for Forks of the Thames River followed by Falls View Park and Fanshawe Pioneer Village.

Explore more of Canada

  • London has plenty going for it, but there are so many other parts of Canada just waiting to be discovered. Around 161 kilometres north-east of London, a visit to Toronto will keep you on the move. Start with leading sights like CN Tower, Skypod CN Tower and Royal Ontario Museum.

  • Around 137 kilometres north-east of London, Mississauga is another essential stop in Canada. Get a taste of what this destination has to offer at Lake Ontario, Xtreme Escape Adventures and Lake Aquitaine Trail.

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