C$ 341 Find Cheap Flights from Illinois to London

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to London departing on 14/5. 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.
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Cheap Flight Deals from Illinois to London

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Illinois to London 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.

Recent round-trip flight deals from Illinois to London

KAYAK's recommended round-trip deals from the most popular airlines that fly from Illinois to London.
Discover the best prices for you by selecting your travel dates on KAYAK.
Choose your dates
9:02 p.m. - 7:09 p.m.ORD-YXU
21h 07m2 stops
8:00 p.m. - 4:44 p.m.YXU-ORD
21h 44m1 stop
C$ 594
Find Deal
Di, 13 Mai - Di, 20 Mai
9:02 p.m. - 7:09 p.m.ORD-YXU
21h 07m2 stops
8:00 p.m. - 4:44 p.m.YXU-ORD
21h 44m1 stop
C$ 598
Find Deal
Di, 13 Mai - Di, 20 Mai
5:30 p.m. - 7:09 p.m.ORD-YXU
24h 39m1 stop
8:00 p.m. - 4:44 p.m.YXU-ORD
21h 44m1 stop
C$ 605WestJet
Find Deal
Di, 13 Mai - Di, 20 Mai
9:02 p.m. - 5:14 a.m.ORD-YXU
31h 12m3 stops
8:00 p.m. - 4:44 p.m.YXU-ORD
21h 44m1 stop
C$ 625
Find Deal
Di, 13 Mai - Di, 20 Mai
9:02 p.m. - 5:14 a.m.ORD-YXU
31h 12m2 stops
8:00 p.m. - 5:25 a.m.YXU-ORD
34h 25m3 stops
C$ 635
Find Deal
Di, 13 Mai - Di, 20 Mai
9:35 a.m. - 3:04 p.m.ORD-YXU
4h 29m1 stop
9:55 a.m. - 12:55 p.m.YXU-ORD
4h 00m1 stop
C$ 797Air Canada
Find Deal
Mi, 14 Mai - Mi, 21 Mai
5:30 p.m. - 7:09 p.m.ORD-YXU
24h 39m1 stop
8:00 p.m. - 4:44 p.m.YXU-ORD
21h 44m1 stop
C$ 886WestJet
Find Deal
Di, 13 Mai - Di, 20 Mai
4:00 p.m. - 9:29 p.m.ORD-YXU
4h 29m1 stop
9:55 a.m. - 12:55 p.m.YXU-ORD
4h 00m1 stop
C$ 963Air Canada
Find Deal
Do, 15 Mai - Do, 22 Mai
6:25 p.m. - 3:04 p.m.ORD-YXU
19h 39m2 stops
3:45 p.m. - 7:57 a.m.YXU-ORD
17h 12m2 stops
C$ 1,182United Airlines
Find Deal
Di, 13 Mai - Di, 20 Mai
2:30 p.m. - 9:29 p.m.STL-YXU
5h 59m1 stop
3:45 p.m. - 7:43 p.m.YXU-STL
4h 58m1 stop
C$ 1,208United Airlines
Find Deal
Mi, 14 Mai - Mi, 21 Mai

Good to know

Low season

December

High season

January
Best time to beat the crowds (64% less expensive on average)
Most popular time to fly and prices are also 61% lower on average.

FAQs for booking flights from Illinois to London

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

    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 Illinois to London.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London from 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 Illinois to London?

    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 to London with an airline and back to Illinois with another airline.

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

    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 to London from Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

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