Cheap Flights 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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Flight deals from Chicago to London

Looking for a cheap last-minute deal or the best return flight from Chicago to London? Find the lowest prices on one-way and return tickets right here.

London.SAR 696 per passenger.Departing Mon, 14 Jul.One-way flight with Allegiant Air.Outbound indirect flight with Allegiant Air, departs from Chicago Rockford on Mon, 14 Jul, arriving in London Gatwick.Price includes taxes and charges.From SAR 696, select.

London.SAR 734 per passenger.Departing Wed, 24 Sep.One-way flight with Spirit Airlines.Outbound indirect flight with Spirit Airlines, departs from Chicago O'Hare International on Wed, 24 Sep, arriving in London Gatwick.Price includes taxes and charges.From SAR 734, select.

London.SAR 818 per passenger.Departing Wed, 1 Oct.One-way flight with Spirit Airlines.Outbound indirect flight with Spirit Airlines, departs from Chicago O'Hare International on Wed, 1 Oct, arriving in London Gatwick.Price includes taxes and charges.From SAR 818, select.

London.SAR 888 per passenger.Departing Sun, 10 Aug.One-way flight with TAP Air Portugal.Outbound indirect flight with TAP Air Portugal, departs from Chicago O'Hare International on Sun, 10 Aug, arriving in London Gatwick.Price includes taxes and charges.From SAR 888, select.

London.SAR 965 per passenger.Departing Sat, 15 Nov.One-way flight with Spirit Airlines.Outbound indirect flight with Spirit Airlines, departs from Chicago O'Hare International on Sat, 15 Nov, arriving in London Gatwick.Price includes taxes and charges.From SAR 965, select.

London.SAR 1,024 per passenger.Departing Sun, 27 Apr.One-way flight with Icelandair.Outbound indirect flight with Icelandair, departs from Chicago O'Hare International on Sun, 27 Apr, arriving in London Heathrow.Price includes taxes and charges.From SAR 1,024, select.

London.SAR 1,050 per passenger.Departing Sat, 17 May.One-way flight with Spirit Airlines.Outbound indirect flight with Spirit Airlines, departs from Chicago O'Hare International on Sat, 17 May, arriving in London Gatwick.Price includes taxes and charges.From SAR 1,050, select.

London.SAR 1,075 per passenger.Departing Sun, 1 Jun.One-way flight with Porter Airlines (Canada) Ltd.Outbound indirect flight with Porter Airlines (Canada) Ltd, departs from Chicago Midway on Sun, 1 Jun, arriving in London Stansted.Price includes taxes and charges.From SAR 1,075, select.

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 July.

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Direct flights from Chicago to London

Alternative Chicago to London routes

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

Chicago to London: Flight information

The things to know before you go.

Cheapest flight found	SAR 696
Cheapest month to fly	July
Average flight time	7 hrs, 54 mins
Most popular airline	Finnair
Average flights per week	387

Finding cheap flights from Chicago to London: Frequently asked questions

How many airports are there in London?

There are 6 airports in London: London City, London Heathrow, London Gatwick, London Luton, London Stansted, and London Southend.

How much are return flights from Chicago to London?

The best price we found for a return flight from Chicago to London is SAR 1,679. 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.

How long does it take to fly from Chicago to London?

7 hours and 54 minutes is the average flight time from Chicago to London.

Which airlines fly direct from Chicago to London?

Finnair, Alaska Airlines and American Airlines fly direct from Chicago to London.

How many flights are there a week from Chicago to London?

As of April 2025, there are 387 flights per week flying from Chicago to London.

When is the cheapest time to fly from Chicago to London?

The cheapest month to fly from Chicago to London is usually April 2025.

Which is the cheapest airport to fly into in London?

If you're flying from Chicago, the cheapest airport near London is London Heathrow – which is 22.9 km away from the centre of London. We've found flights into this airport from SAR 1,679.

Which upcoming date is cheapest to fly from Chicago to London on?

After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Chicago to London on Monday, 13 October 2025.

Can I get a direct flight from Chicago to London?

Yes – the average flight time is 7 hours and 54 minutes.

How can I get the best flight deal from Chicago to London?

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.

When is the best time to book flights to London?

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.

What’s the weather like in London?

In April, the average temperature is usually around 9°C. August is typically the warmest month in London, when it usually averages around 22°C. You can expect the least rain in March. The coldest month is January, with temperatures averaging 1°C. The rainiest month is October.

Which is the cheapest airline to fly from Chicago to London with?

The cheapest airline that flies to London is Scandinavian Airlines. And the cheapest airline that flies to London Heathrow Airport is American Airlines.

How to find cheap flights to London from Chicago

Looking for cheap tickets from Chicago to London? Here are a few tips on how to secure the best flight price and make your journey as smooth as possible.

Simply hit 'search'. From British Airways to international carriers like Emirates, we compare all major airlines along with the most popular online travel agents to find the cheapest plane tickets from Chicago to London. And with us there are no hidden fees - what you see is what you pay.
Compare flight deals to London from Chicago from over 1,000 providers. Then choose the cheapest or fastest plane tickets.
Flex your dates to find the best Chicago-London ticket prices. If you are flexible when it comes to your travel dates, use Skyscanner's 'Whole month' tool to find the cheapest month, and even day to fly to London from Chicago.
Set up a Price Alert. You can easily track the fare of your cheap Chicago-London flights by creating an alert. Whenever prices go down or up, you'll get an email or push notification to help make sure you get the best possible flight deal.
Fly without stops. Only interested in direct flights between Chicago and London? Make sure to tick 'Direct flights only' when performing a search. If there are direct flights available on the route, these will appear in the results.
Find the cheapest Business class flights from Chicago and London. We scour the internet for the best Business, Premium Economy and First Class flight fares to London, too. Check the difference in price as you search – you might just chance upon a last-minute low fare. Note that not all cabin classes are available for every destination or airline.
Include nearby airports in your search. Widen your search for Chicago to London flight deals by selecting the "add nearby airports" option. This will allow you to see flight prices for all the nearest airports at your departure point and your destination and could help you save next time you travel.

Combine your flight to London from Chicago with hotels and car hire

Once you've secured your cheap flight ticket from Chicago to London, discover the best prices and exclusive rates for hotels in London or nearby. You can also compare hundreds of car hire companies in one go so that you get the best car hire price for your trip.