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

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

Which airlines provide the cheapest flights from London to Illinois?

In the past 3 days, the cheapest round-trip tickets from London to Illinois were found on United Airlines ($397) and Air Canada ($429).

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.

How long does a flight from London to Illinois take?

The duration of a flight to Illinois depends on your arrival airport. The shortest route to Illinois from London is to Chicago , which takes 13h 02m .

$275 CHEAP FLIGHTS from London to Illinois

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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.

Round-trip

One-way

Last minute

Recent round-trip flight deals from London to Illinois

Tue, Oct 14 - Tue, Oct 21

3:40 pm - 7:29 pmYXU-ORD

4h 49m1 stop

9:55 am - 3:02 pmORD-YXU

4h 07m1 stop

$392

Find Deal

Tue, Oct 14 - Tue, Oct 21

9:55 am - 1:14 pmYXU-ORD

4h 19m1 stop

6:00 am - 3:02 pmORD-YXU

8h 02m2 stops

$397United Airlines

Find Deal

Tue, Oct 14 - Tue, Oct 21

3:40 pm - 11:15 pmYXU-ORD

8h 35m2 stops

6:00 am - 3:02 pmORD-YXU

8h 02m2 stops

$402United Airlines

Find Deal

Thu, Aug 14 - Thu, Aug 21

9:55 am - 1:13 pmYXU-ORD

4h 18m1 stop

9:55 am - 3:02 pmORD-YXU

4h 07m1 stop

$429Air Canada

Find Deal

Mon, Jul 28 - Mon, Aug 4

6:15 am - 9:59 amYXU-ORD

4h 44m1 stop

10:50 am - 5:07 pmORD-YXU

5h 17m1 stop

$430United Airlines

Find Deal

Sun, Jul 27 - Sun, Aug 3

6:15 am - 9:09 amYXU-ORD

3h 54m1 stop

9:55 am - 3:02 pmORD-YXU

4h 07m1 stop

$432United Airlines

Find Deal

Sun, Jul 27 - Sun, Aug 3

9:55 am - 3:04 pmYXU-ORD

6h 09m1 stop

2:00 pm - 9:27 pmORD-YXU

6h 27m1 stop

$487Air Canada

Find Deal

Sun, Jul 27 - Sun, Aug 3

6:15 am - 9:09 amYXU-ORD

3h 54m1 stop

7:15 am - 5:07 pmORD-YXU

8h 52m2 stops

$509

Find Deal

Thu, Aug 14 - Thu, Aug 21

6:00 am - 9:44 pmYXU-MDW

16h 44m2 stops

12:43 pm - 5:14 amMDW-YXU

15h 31m2 stops

$1,617WestJet

Find Deal

Fri, Aug 15 - Fri, Aug 22

8:00 pm - 9:36 amYXU-MDW

14h 36m2 stops

9:15 am - 5:14 amMDW-YXU

18h 59m2 stops

$1,665WestJet

Find Deal

Useful Info

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.

Prices

Airlines

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

Find deals

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

Airports

Cabin class

Complete your trip

Flights to other cities

Origins

Return flight deals

Information on your arrival and departure airports

London (YXU)

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

$275 Find Cheap Flights from London to Illinois

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

Cheap Flights from London to Illinois

Recent round-trip flight deals from London to Illinois

Recent one-way flight deals from London to Illinois

Recent last minute flight deals from London to Illinois

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?

Which airlines provide the cheapest flights from London to Illinois?

In the past 3 days, the cheapest round-trip tickets from London to Illinois were found on United Airlines ($397) and Air Canada ($429).

How long does a flight from London to Illinois take?

The duration of a flight to Illinois depends on your arrival airport. The shortest route to Illinois from London is to Chicago, which takes 13h 02m.

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

Cabin class types available on flights to Illinois

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

Flights to other popular destinations

Flights from other airports in London to Illinois

Find deals for your return flight