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Compare Chicago to London flight deals

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

Book the best London fare with no extra fees

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.£102 per passenger.Departing Tue, 4 Feb.One-way flight with Spirit Airlines.Outbound indirect flight with Spirit Airlines, departs from Chicago O'Hare International on Tue, 4 Feb, arriving in London Gatwick.Price includes taxes and charges.From £102, select.
London.£135 per passenger.Departing Tue, 29 Apr.One-way flight with Spirit Airlines.Outbound indirect flight with Spirit Airlines, departs from Chicago O'Hare International on Tue, 29 Apr, arriving in London Gatwick.Price includes taxes and charges.From £135, select.
London.£135 per passenger.Departing Wed, 7 May.One-way flight with Spirit Airlines.Outbound indirect flight with Spirit Airlines, departs from Chicago O'Hare International on Wed, 7 May, arriving in London Gatwick.Price includes taxes and charges.From £135, select.
London.£141 per passenger.Departing Tue, 28 Jan.One-way flight with Spirit Airlines.Outbound indirect flight with Spirit Airlines, departs from Chicago O'Hare International on Tue, 28 Jan, arriving in London Gatwick.Price includes taxes and charges.From £141, select.
London.£143 per passenger.Departing Tue, 4 Mar.One-way flight with Spirit Airlines.Outbound indirect flight with Spirit Airlines, departs from Chicago O'Hare International on Tue, 4 Mar, arriving in London Gatwick.Price includes taxes and charges.From £143, select.
London.£149 per passenger.Departing Tue, 3 Dec.One-way flight with Icelandair.Outbound indirect flight with Icelandair, departs from Chicago O'Hare International on Tue, 3 Dec, arriving in London Gatwick.Price includes taxes and charges.From £149, select.
London.£152 per passenger.Departing Tue, 12 Nov.One-way flight with Icelandair.Outbound indirect flight with Icelandair, departs from Chicago O'Hare International on Tue, 12 Nov, arriving in London Gatwick.Price includes taxes and charges.From £152, select.
London.£203 per passenger.Departing Sun, 13 Jul.One-way flight with Icelandair.Outbound indirect flight with Icelandair, departs from Chicago O'Hare International on Sun, 13 Jul, arriving in London Gatwick.Price includes taxes and charges.From £203, 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 February.
Nov
from £154
Dec
from £151
Jan
from £143
Feb
from £103
Mar
from £145
Apr
from £137
May
from £136
Jun
from £275
Jul
from £205
Aug
from £283
Sep
from £213
Oct
from £245

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£103
Cheapest month to flyFebruary
Average flight time7 hrs, 55 mins
Most popular airlineAmerican Airlines
Average flights per week533

Finding cheap flights from Chicago to London: Frequently asked questions

There are 6 airports in London: London City, London Heathrow, London Gatwick, London Luton, London Stansted, and London Southend.
The best price we found for a return flight from Chicago to London is £329. 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.
7 hours and 55 minutes is the average flight time from Chicago to London.
American Airlines, British Airways and Alaska Airlines fly direct from Chicago to London.
As of November 2024, there are 533 flights per week flying from Chicago to London.
The cheapest month to fly from Chicago to London is usually November 2024.
If you're flying from Chicago, the cheapest airport near London is London Luton – which is 44.6 km away from the centre of London. We've found flights into this airport from £329.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Chicago to London on Friday, 31 January 2025.
Yes – the average flight time is 7 hours and 55 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 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.
In November, the average temperature is usually around 7°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.
The cheapest airline that flies to London is Frontier Airlines. And the cheapest airline that flies to London Heathrow Airport is Finnair.

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.


Plan the rest of your trip from Chicago to London

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