Cheap flights to Illinois, United States

One search, all the flights

We find you the best flight deals and travel hacks so that you can choose how to book.

Rise above all travel anxieties

With the Kiwi.com Guarantee we have your back with whatever happens.

Trusted by millions

Join over 10 million yearly travellers booking with ease.

Popular cities in Illinois

Flights to Chicago
Flights to Peoria
Flights to Moline
Flights to Springfield
Flights to Belleville
Flights to Bloomington
Flights to Quincy
Flights to Marion
Flights to Decatur
Flights to Champaign

Cheapest month to fly to Illinois

Explore price trends for trips to Illinois

Showing prices in GBP

Annual Avg. Price349 GBP
September 2025284 GBP
October 2025266 GBP
November 2025208 GBP
December 2025197 GBP
January 2026371 GBP
February 2026370 GBP
March 2026325 GBP
April 2026339 GBP
May 2026384 GBP
June 2026464 GBP
July 2026528 GBP
August 2026448 GBP

Major airports in Illinois

Popular airports in Illinois

Airports near Illinois

Illinois - popular routes

Flights to Illinois

Flights from Illinois

Flights to places near Illinois

Frequently asked questions

What are the main airports in Illinois, United States?
The main airports in Illinois, United States are O'Hare International Airport (ORD) in Chicago and Midway International Airport (MDW) in Chicago. These airports offer a wide range of domestic and international flights, making them convenient options for travelers.
When is the best time of the year to fly to Illinois, United States?
The best time to fly to Illinois, United States is during the spring and fall seasons when the weather is mild and pleasant. However, it's important to note that flight prices may vary depending on demand, so it's advisable to check for deals and book in advance.
What to do in Illinois, United States?
Illinois offers a variety of attractions and activities for visitors. Explore the vibrant city of Chicago with its iconic architecture, museums, and shopping districts. Visit popular landmarks like Millennium Park and Navy Pier. Discover the natural beauty of Starved Rock State Park or enjoy wine tasting in the scenic Shawnee Hills Wine Trail.
When to book your flight to Illinois, United States?
It's recommended to book your flight to Illinois, United States at least two to three months in advance for better deals and availability. Prices tend to increase as the departure date approaches, so early booking can help you secure lower fares.
What part of Illinois, United States is visited the most?
The city of Chicago is visited the most in Illinois, United States. Known for its stunning skyline, cultural attractions, and diverse culinary scene, Chicago attracts millions of tourists each year. From world-class museums to lively neighborhoods like Magnificent Mile and Wicker Park, there's something for everyone in this bustling city.
What are top tourist attractions in Illinois, United States?
Some of the top tourist attractions in Illinois include Willis Tower Skydeck with its breathtaking views of Chicago's skyline; Art Institute of Chicago showcasing renowned artworks; Shedd Aquarium featuring marine life exhibits; Navy Pier offering entertainment options; and Millennium Park with its famous Cloud Gate sculpture.

Download our app

Start your next adventure now. Download our app and explore cheap flights effortlessly!