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. Visit our flight page for the latest deals!>/a>

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. Visit our flight page for the latest deals!>/a>

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. Visit our flight page for the latest deals!>/a>

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. Visit our flight page for the latest deals!>/a>

$270 CHEAP FLIGHTS from Illinois to London

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Flight Deals

Cheap Flights 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.

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Recent round-trip flight deals from Illinois to London

Mon, Sep 22 - Mon, Sep 29

5:30 pm - 5:12 amORD-YXU

10h 42m1 stop

6:00 am - 4:43 pmYXU-ORD

11h 43m1 stop

$285WestJet

Find Deal

Mon, Sep 22 - Mon, Sep 29

6:00 am - 5:12 amORD-YXU

22h 12m2 stops

6:00 am - 4:43 pmYXU-ORD

11h 43m1 stop

$372

Find Deal

Sun, Sep 28 - Sun, Oct 5

5:30 pm - 5:12 amORD-YXU

10h 42m1 stop

8:00 pm - 10:43 pmYXU-ORD

27h 43m2 stops

$373

Find Deal

Sat, Sep 13 - Sat, Sep 20

1:40 pm - 5:12 amORD-YXU

14h 32m2 stops

8:00 pm - 4:43 pmYXU-ORD

21h 43m1 stop

$417WestJet

Find Deal

Mon, Sep 22 - Mon, Sep 29

5:05 am - 5:12 amORD-YXU

23h 07m3 stops

6:00 am - 4:43 pmYXU-ORD

11h 43m1 stop

$436

Find Deal

Sun, Sep 28 - Sun, Oct 5

5:30 pm - 5:12 amORD-YXU

10h 42m1 stop

6:00 am - 5:21 pmYXU-ORD

36h 21m3 stops

$448

Find Deal

Sat, Sep 13 - Sat, Sep 20

9:55 am - 3:17 pmORD-YXU

4h 22m1 stop

3:50 pm - 7:29 pmYXU-ORD

4h 39m1 stop

$590Air Canada

Find Deal

Wed, Sep 10 - Wed, Sep 17

2:00 pm - 9:29 pmORD-YXU

6h 29m1 stop

6:10 am - 10:53 amYXU-ORD

5h 43m1 stop

$607Air Canada

Find Deal

Sun, Sep 28 - Sun, Oct 5

9:55 am - 3:17 pmORD-YXU

4h 22m1 stop

3:40 pm - 7:29 pmYXU-ORD

4h 49m1 stop

$686United Airlines

Find Deal

Sun, Sep 28 - Sun, Oct 5

6:00 am - 3:17 pmORD-YXU

8h 17m2 stops

9:55 am - 1:14 pmYXU-ORD

4h 19m1 stop

$696United Airlines

Find Deal

Useful Info

Cheapest flight	$270

Flight from Chicago 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.

Grand Bend

Everything you need to know for your flight to London

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Complete your trip

Flights to other cities

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Return flight deals

Information on the airport you'll fly into in London

London (YXU)

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.

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$270 Find Cheap Flights from Illinois to London

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

Cheap Flights from Illinois to London

Recent round-trip flight deals from Illinois to London

Recent one-way flight deals from Illinois to London

Recent last minute flight deals from Illinois to London

Good to know

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.

Traveling to a place near London?

Everything you need to know for your flight to London

Information on the airport you'll fly into in London

Cabin class types available on flights to Illinois

Complete your trip to London with a hotel stay or car rental

Flights to other popular destinations

Flights from domestic origins to London

Choose which airport to fly into in London

Find deals for your return flight