$263 Find Cheap Flights from London to Illinois - Compare and Save

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 9/10. 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, 0 bags

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Book Cheap London to Illinois Plane Tickets

 
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

Fri, Sep 4 - Thu, Sep 10
WestJet Logo
6:10 am - 4:40 pmYXU  London-ORD Chicago O'Hare Intl
11h 30m1 stop Calgary
WestJet Logo
5:30 pm - 5:20 amORD  Chicago O'Hare Intl-YXU London
10h 50m1 stop Calgary
$453WestJet
Fri, Sep 4 - Fri, Sep 11
WestJet Logo
6:10 am - 4:40 pmYXU  London-ORD Chicago O'Hare Intl
11h 30m1 stop Calgary
WestJet Logo
5:30 pm - 5:20 amORD  Chicago O'Hare Intl-YXU London
10h 50m1 stop Calgary
$505WestJet
Fri, Sep 4 - Thu, Sep 10
Multiple Airlines Logo
8:40 pm - 4:40 pmYXU  London-ORD Chicago O'Hare Intl
21h 00m1 stop Calgary
Multiple Airlines Logo
8:55 pm - 5:20 amORD  Chicago O'Hare Intl-YXU London
31h 25m2 stops Las Vegas Harry Reid Intl Calgary
$527Multiple Airlines
Thu, Sep 3 - Sun, Sep 6
Air Canada Logo
5:40 am - 9:00 amYXU  London-ORD Chicago O'Hare Intl
4h 20m1 stop Toronto Pearson Intl
Air Canada Logo
3:45 pm - 9:40 pmORD  Chicago O'Hare Intl-YXU London
4h 55m1 stop Toronto Pearson Intl
$551Air Canada
Fri, Sep 4 - Fri, Sep 11
Air Canada Logo
5:40 am - 9:00 amYXU  London-ORD Chicago O'Hare Intl
4h 20m1 stop Toronto Pearson Intl
Air Canada Logo
3:45 pm - 9:40 pmORD  Chicago O'Hare Intl-YXU London
4h 55m1 stop Toronto Pearson Intl
$552Air Canada
Fri, Aug 28 - Wed, Sep 30
Air Canada Logo
3:30 pm - 7:52 pmYXU  London-ORD Chicago O'Hare Intl
5h 22m1 stop Toronto Pearson Intl
Air Canada Logo
9:55 am - 2:50 pmORD  Chicago O'Hare Intl-YXU London
3h 55m1 stop Toronto Pearson Intl
$556Air Canada
Thu, Oct 1 - Mon, Oct 5
Air Canada Logo
5:40 am - 9:00 amYXU  London-ORD Chicago O'Hare Intl
4h 20m1 stop Toronto Pearson Intl
Air Canada Logo
2:15 pm - 9:40 pmORD  Chicago O'Hare Intl-YXU London
6h 25m1 stop Toronto Pearson Intl
$560Air Canada
Thu, Oct 1 - Mon, Oct 5
Air Canada Logo
5:40 am - 9:00 amYXU  London-ORD Chicago O'Hare Intl
4h 20m1 stop Toronto Pearson Intl
Air Canada Logo
2:15 pm - 9:40 pmORD  Chicago O'Hare Intl-YXU London
6h 25m1 stop Toronto Pearson Intl
$561Air Canada
Fri, Sep 4 - Fri, Sep 11
WestJet Logo
2:40 pm - 4:40 pmYXU  London-ORD Chicago O'Hare Intl
27h 00m2 stops Winnipeg Calgary
WestJet Logo
5:30 pm - 5:20 amORD  Chicago O'Hare Intl-YXU London
10h 50m1 stop Calgary
$563WestJet
Thu, Oct 1 - Mon, Oct 5
Air Canada Logo
3:30 pm - 7:48 pmYXU  London-ORD Chicago O'Hare Intl
5h 18m1 stop Toronto Pearson Intl
Air Canada Logo
8:45 am - 5:45 pmORD  Chicago O'Hare Intl-YXU London
8h 00m2 stops Montreal Pierre Elliott Trudeau Intl Toronto Pearson Intl
$563Air Canada
Booking Insights

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.

Which airlines provide the cheapest flights from London to Illinois?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 5 days.

In the past 5 days, the cheapest round-trip tickets from London to Illinois were found on WestJet ($453) and Air Canada ($551).

Find deals

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.

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

Information on your arrival and departure airports

London (YXU)