$275 Find Cheap Flights from London to Illinois

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from London to Illinois departing on 8/14. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Illinois

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Illinois, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Illinois, as well as popular online travel agencies
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Flights Deals

Cheap Flights from London to Illinois

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from London to Illinois that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from London to Illinois

Tue, Oct 14 - Tue, Oct 21
 Logo
3:40 pm - 7:29 pmYXU-ORD
4h 49m1 stop
 Logo
9:55 am - 3:02 pmORD-YXU
4h 07m1 stop
Tue, Oct 14 - Tue, Oct 21
United Airlines Logo
9:55 am - 1:14 pmYXU-ORD
4h 19m1 stop
United Airlines Logo
6:00 am - 3:02 pmORD-YXU
8h 02m2 stops
$397United Airlines
Find Deal
Tue, Oct 14 - Tue, Oct 21
United Airlines Logo
3:40 pm - 11:15 pmYXU-ORD
8h 35m2 stops
United Airlines Logo
6:00 am - 3:02 pmORD-YXU
8h 02m2 stops
$402United Airlines
Find Deal
Thu, Aug 14 - Thu, Aug 21
Air Canada Logo
9:55 am - 1:13 pmYXU-ORD
4h 18m1 stop
Air Canada Logo
9:55 am - 3:02 pmORD-YXU
4h 07m1 stop
$429Air Canada
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Mon, Jul 28 - Mon, Aug 4
United Airlines Logo
6:15 am - 9:59 amYXU-ORD
4h 44m1 stop
United Airlines Logo
10:50 am - 5:07 pmORD-YXU
5h 17m1 stop
$430United Airlines
Find Deal
Sun, Jul 27 - Sun, Aug 3
United Airlines Logo
6:15 am - 9:09 amYXU-ORD
3h 54m1 stop
United Airlines Logo
9:55 am - 3:02 pmORD-YXU
4h 07m1 stop
$432United Airlines
Find Deal
Sun, Jul 27 - Sun, Aug 3
Air Canada Logo
9:55 am - 3:04 pmYXU-ORD
6h 09m1 stop
Air Canada Logo
2:00 pm - 9:27 pmORD-YXU
6h 27m1 stop
$487Air Canada
Find Deal
Sun, Jul 27 - Sun, Aug 3
 Logo
6:15 am - 9:09 amYXU-ORD
3h 54m1 stop
 Logo
7:15 am - 5:07 pmORD-YXU
8h 52m2 stops
Thu, Aug 14 - Thu, Aug 21
WestJet Logo
6:00 am - 9:44 pmYXU-MDW
16h 44m2 stops
WestJet Logo
12:43 pm - 5:14 amMDW-YXU
15h 31m2 stops
$1,617WestJet
Find Deal
Fri, Aug 15 - Fri, Aug 22
WestJet Logo
8:00 pm - 9:36 amYXU-MDW
14h 36m2 stops
WestJet Logo
9:15 am - 5:14 amMDW-YXU
18h 59m2 stops
$1,665WestJet
Find Deal
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KAYAK's insights & trends for London to Illinois flights

Get data-powered insights and trends into flights from London to Illinois to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from London, Ontario to Illinois?


FAQs - booking Illinois flights

  • How does KAYAK find such low prices on flights from London to Illinois?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from London to Illinois.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from London to Illinois?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from London to Illinois is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from London to Illinois?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from London to Illinois with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from London to Illinois?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from London to Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Illinois?

    The cheapest time of day to fly to Illinois is generally in the morning, when round-trip flights cost $628 on average. The most expensive time of day to fly to Illinois is generally in the morning, which is peak travel time and where the average cost of a ticket is $628.

Everything you need to know for your flight from London to Illinois

Information on your arrival and departure airports

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