Question 1

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

Accepted Answer

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. <a href='/flight-routes/London-YXU/Illinois-USIL'>Visit our flight page for the latest deals!>/a>

Question 2

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

Accepted Answer

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. <a href='/flight-routes/London-YXU/Illinois-USIL'>Visit our flight page for the latest deals!>/a>

Question 3

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

Accepted Answer

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. <a href='/flight-routes/London-YXU/Illinois-USIL'>Visit our flight page for the latest deals!>/a>

Question 4

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

Accepted Answer

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. <a href='/flight-routes/London-YXU/Illinois-USIL'>Visit our flight page for the latest deals!>/a>

Question 5

Which airlines provide the cheapest flights from London to Illinois?

Accepted Answer

In the past 3 days, the cheapest round-trip tickets from London to Illinois were found on Air Canada ($489) and United Airlines ($538).

Question 6

Which airlines provide the cheapest flights from London to Illinois?

Accepted Answer

In the past 3 days, the cheapest round-trip tickets from London to Illinois were found on Air Canada ($489) and United Airlines ($538).

Question 7

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

Accepted Answer

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.

Question 8

How long does a flight from London to Illinois take?

Accepted Answer

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 13m.

Question 9

How long does a flight from London to Illinois take?

Accepted Answer

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 13m.

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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.

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 Air Canada ($489) and United Airlines ($538).

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 13m.

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

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