£362 Cheap Flights to Illinois

View £362 flight on Wed, 24 Feb 2027Opens in a new window

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Popular airlines to Illinois

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  • Frontier Airlines

  • American Airlines

  • United

  • Spirit Airlines

  • Alaska Airlines

  • Southwest Airlines

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Cheap round-trip flights to Illinois

Prices were available within the past 7 days and start at £362 for one-way flights and £457 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Icelandair
Fri, 12 Feb - Fri, 26 Feb
LHR
London
ORD
Chicago
£494 Return, found 3 days ago
£494
Return
found 3 days ago
Select Icelandair flight, departing Fri, 12 Feb from London to Chicago, returning Fri, 26 Feb, priced at £494 found 3 days ago
Scandinavian Airlines
Sun, 10 Jan - Sat, 30 Jan
LHR
London
ORD
Chicago
£534 Return, found 2 days ago
£534
Return
found 2 days ago
Select Scandinavian Airlines flight, departing Sun, 10 Jan from London to Chicago, returning Sat, 30 Jan, priced at £534 found 2 days ago
JetBlue Airways
Sat, 9 May - Tue, 12 May
LHR
London
ORD
Chicago
£558 Return, found 4 hours ago
£558
Return
found 4 hours ago
Select JetBlue Airways flight, departing Sat, 9 May from London to Chicago, returning Tue, 12 May, priced at £558 found 4 hours ago
TAP Portugal
Fri, 6 Nov - Sun, 15 Nov
LHR
London
ORD
Chicago
£559 Return, found 1 hour ago
£559
Return
found 1 hour ago
Select TAP Portugal flight, departing Fri, 6 Nov from London to Chicago, returning Sun, 15 Nov, priced at £559 found 1 hour ago
Aer Lingus
Tue, 10 Nov - Tue, 17 Nov
LHR
London
ORD
Chicago
£583 Return, just found
£583
Return
just found
Select Aer Lingus flight, departing Tue, 10 Nov from London to Chicago, returning Tue, 17 Nov, priced at £583 just found
American Airlines
Tue, 17 Nov - Sat, 28 Nov
LHR
London
ORD
Chicago
£584 Return, found 13 hours ago
£584
Return
found 13 hours ago
Select American Airlines flight, departing Tue, 17 Nov from London to Chicago, returning Sat, 28 Nov, priced at £584 found 13 hours ago
British Airways
Mon, 31 Aug - Tue, 22 Sept
LHR
London
ORD
Chicago
£585 Return, found 2 days ago
£585
Return
found 2 days ago
Select British Airways flight, departing Mon, 31 Aug from London to Chicago, returning Tue, 22 Sept, priced at £585 found 2 days ago
Swiss International Air Lines
Tue, 10 Nov - Tue, 17 Nov
LHR
London
ORD
Chicago
£591 Return, just found
£591
Return
just found
Select Swiss International Air Lines flight, departing Tue, 10 Nov from London to Chicago, returning Tue, 17 Nov, priced at £591 just found
Austrian Airlines
Tue, 10 Nov - Tue, 17 Nov
LHR
London
ORD
Chicago
£592 Return, just found
£592
Return
just found
Select Austrian Airlines flight, departing Tue, 10 Nov from London to Chicago, returning Tue, 17 Nov, priced at £592 just found
Lufthansa
Mon, 11 Jan - Mon, 18 Jan
LHR
London
ORD
Chicago
£594 Return, found 18 hours ago
£594
Return
found 18 hours ago
Select Lufthansa flight, departing Mon, 11 Jan from London to Chicago, returning Mon, 18 Jan, priced at £594 found 18 hours ago

Trending flights to Illinois

These prices were available within the past 7 days. Prices quoted are per person, return, for the period specified. Prices and availability are subject to change. Additional terms apply.

Icelandair
Mon, 15 Feb - Mon, 1 Mar
LGW
London
ORD
Chicago
£457 Return, found 2 days ago
£457
Return
found 2 days ago
Select Icelandair flight, departing Mon, 15 Feb from London to Chicago, returning Mon, 1 Mar, priced at £457 found 2 days ago

Frequently asked questions

How do I find cheap flights to Illinois that have flexible change policies?
Search for cheap flights to Illinois, then tick the "No change fee" box under the "Flexible change policies" heading. From then on it's smooth sailing. We understand that travel plans change and flexibility is essential, so book with confidence with Expedia.
Which airlines fly to Illinois?
Whether you're travelling somewhere new or rendezvousing at a favourite haunt, these airlines are waiting to take you into or near Illinois:

  • United Airlines - 13,063 flights to or near Illinois each month, including 12,950 flights to O'Hare Intl. Airport (ORD) and 108 flights to Quad City Intl. Airport (MLI) per month.
  • American Airlines - 8,977 flights to or near Illinois each month, including 8,855 flights to O'Hare Intl. Airport (ORD) and 121 flights to Quad City Intl. Airport (MLI) per month.
  • Southwest Airlines - 5,997 flights to or near Illinois each month, including 5,334 flights to Midway Intl. Airport (MDW) and 663 flights to O'Hare Intl. Airport (ORD) per month.

How can I find cheap tickets to Illinois?
One of the easiest ways to find cheap tickets to Illinois is to be flexible with your travel dates. Search for your flights, then click "flexible dates" at the top of your results. It'll reveal the cheapest prices for nearby days. The lowest price for a flight to Illinois in the last seven days was £457. Booking well in advance will generally help you score an even bigger bargain.
How much is a flight to Illinois?
There were plenty of bargain fares up for grabs in the last seven days, with the cost of a return airfare to Illinois ranging between £457 and £594. Many lucky travellers nabbed one-way tickets from London (LHR) for as little as £362.
What are the most popular airports to fly into in Illinois?
Touch down at one of these top Illinois airports and you'll be perfectly placed to discover all that this wonderful region has to offer:

  • O'Hare Intl. Airport (ORD) - 25,318 flights per month.
  • Midway Intl. Airport (MDW) - 5,962 flights per month.
  • Quad City Intl. Airport (MLI) - 325 flights per month.

When is the cheapest time to fly to Illinois?
Take off for Illinois early in the week and you'll usually be rewarded more economical fares. Tuesday is typically the cheapest day to hop on a plane, followed by Monday. If you're hoping to avoid the most expensive flights, steer clear of Saturdays.
How much is a plane ticket to Illinois?
In the last seven days, plane fares to Illinois ranged from £457 to £594.
What is the best time to go to Illinois?
A terrific time to check out Chicago is after June 20 when the summer season starts. In Illinois's main city, average temperatures range from 18ºC to 24ºC at this time — ideal weather for sightseeing! May, June and August are the most popular months to head to this hot spot.
What months are the cheapest to book a flight to Illinois?
The top month to purchase affordable flights to Illinois is February. Remember that in the U.S, an expensive time to reserve a ticket is during the busy month of December.

Book with confidence

Top tips for booking flights to Illinois from UK

Get ready to fly to Illinois

Prepare your luggage and book your flights to Illinois with Expedia. We offer a seamless flight booking experience, with a wide range of Illinois plane tickets to choose from. If you need help finding some of the best deals for cheap flights to Illinois in 2026, we are always available to assist you. Book your flights to Illinois today and let the adventure begin!

Find the best tickets to Illinois

To find some of the best tickets to Illinois in 2026, use Expedia's powerful search engine to compare dates and the different departure and arrival airports for your trip. Whether you're after direct flights to Illinois or last-minute flights to Illinois, you can filter and sort your search results, making it easy to find the ideal flight to Illinois.

Airlines fly to Illinois

There are 20 different airlines that fly to Illinois including some of the most trusted names in the business. To book flights to Illinois with your favourite airline, take a look at Expedia's flight listings and try out different dates to find some of the best Illinois plane tickets.

Find the cheapest flights to Illinois

By booking early you may find some of the best deals for Illinois flights from the UK, including Illinois direct flights. You can usually find affordable and cheap flights to Illinois, whether one-way from £362 or round-trip from £457, with Expedia if you book your trip far enough in advance.

Find the best airports for cheap flights to Illinois

Try searching for different Illinois airports with Expedia to find some of the cheapest flights to Illinois. Flights from London (LHR) to Chicago (ORD) usually have the lowest price from £362.

Why book your flights to Illinois with Expedia

Expedia offers great deals on Illinois air fares from £362 to cater to every budget. Not only is Expedia one of the top platforms to book flights to Illinois from the UK, it is also your one-stop shop for booking hotels, car rentals, and more.

 

*Prices and availability are subject to change. Additional terms apply.

Top tips for booking flights to Illinois from UK

Travel information

Illinois Flights Information

Airlines serving
Icelandair, JetBlue Airways, Swiss International Air Lines, Aer Lingus, Austrian Airlines, Lufthansa, Brussels Airlines, United, British Airways, Scandinavian Airlines, TAP Portugal, American Airlines
Roundtrip price
from £457
Illinois Flights Information

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