Cheap Flights to Illinois from $1,385 Return

Q: What is the cheapest month to fly to Illinois?

The cheapest month to fly to Decatur is currently August . The cheapest month to fly to Champaign is currently August . The cheapest month to fly to Chicago O'Hare International is currently August . And the cheapest month to fly to Moline is currently August .

Q: What is the cheapest day to fly to Illinois?

The cheapest day to fly to Chicago O'Hare International is currently Friday, 8 August 2025 . The cheapest day to fly to Moline is currently Saturday, 23 August 2025 . The cheapest day to fly to Greater Peoria is currently Sunday, 24 August 2025 . And the cheapest day to fly to Decatur is currently Sunday, 24 August 2025 .

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Find where to fly in Illinois

You could visit 13 destinations in Illinois – explore your options right here.

Flight deals to Illinois

Find the best prices for one-way or return flights to Illinois's most popular spots.

Chicago.$1,395 per passenger.Departing Fri, 8 Aug, returning Sat, 16 Aug.Return flight with Fiji Airways and Spirit Airlines.Outbound indirect flight with Fiji Airways, departs from Melbourne Tullamarine on Fri, 8 Aug, arriving in Chicago O'Hare International.Inbound indirect flight with Spirit Airlines, departs from Chicago O'Hare International on Sat, 16 Aug, arriving in Melbourne Tullamarine.Price includes taxes and charges.From $1,395, select.

Moline.$1,681 per passenger.Departing Sat, 23 Aug, returning Thu, 4 Sep.Return flight with American Airlines.Outbound indirect flight with American Airlines, departs from Sydney on Sat, 23 Aug, arriving in Moline.Inbound indirect flight with American Airlines, departs from Moline on Thu, 4 Sep, arriving in Sydney.Price includes taxes and charges.From $1,681, select.

Peoria.$1,809 per passenger.Departing Sun, 24 Aug, returning Sun, 31 Aug.Return flight with American Airlines.Outbound indirect flight with American Airlines, departs from Sydney on Sun, 24 Aug, arriving in Greater Peoria.Inbound indirect flight with American Airlines, departs from Greater Peoria on Sun, 31 Aug, arriving in Sydney.Price includes taxes and charges.From $1,809, select.

Decatur.$2,173 per passenger.Departing Sun, 24 Aug, returning Sun, 31 Aug.Return flight with United.Outbound indirect flight with United, departs from Melbourne Tullamarine on Sun, 24 Aug, arriving in Decatur.Inbound indirect flight with United, departs from Decatur on Sun, 31 Aug, arriving in Melbourne Tullamarine.Price includes taxes and charges.From $2,173, select.

Champaign.$3,257 per passenger.Departing Sat, 23 Aug, returning Sat, 30 Aug.Return flight with Qantas.Outbound indirect flight with Qantas, departs from Perth on Sat, 23 Aug, arriving in Champaign.Inbound indirect flight with Qantas, departs from Champaign on Sat, 30 Aug, arriving in Perth.Price includes taxes and charges.From $3,257, select.

Flying to Illinois

The things to know before you go.

Cheapest flight found	$1,395, Chicago
Cheapest month to fly	August
Cheapest airport to fly from	Melbourne Tullamarine

How to find cheap one-way and return flights to Illinois

Here are a few tips on how to find the best price for Illinois flights.

Simply hit 'search'

We've compared all the best online travel agents and flight providers out there to find the cheapest plane tickets to Illinois. And with us, there are no added fees – what you see is what you pay.

Fly into Chicago

At the moment, the lowest priced flight tickets to Illinois are from Sydney to Chicago O'Hare International.

Fly in August

The cheapest time to fly to Illinois is currently August.

Flex your dates for the best rates

If you’re flexible on your departure dates, you can use Skyscanner's whole month tool to find the cheapest day of the year to travel to any city you choose in Illinois.

Set up a Price Alert

We'll let you know when flight prices to Illinois go up or down so you can book when the time is just right.

Book flights to Illinois on the Skyscanner app

You can search, compare and save your favourite Illinois flights, hotel and car hire in seconds – all on the Skyscanner app for iOS or Android.

Book flight tickets to Illinois with extra peace of mind

Find flexible getaways

Keep an eye out for flexible ticket options to Illinois. If you go for a flexible plane ticket, you won’t lose out if your flight is cancelled or needs to be changed.

Book spotless stays

Check out the hotels in Illinois with sparkling 5/5 cleanliness ratings, or bag a room with free cancellation.

Get insured

Choose travel cost protection that covers against any unexpected hiccups before or during your trip. With the right travel insurance, you won’t lose out on money if your flights to Illinois are changed or cancelled or your trip is cut short.

Frequently asked questions

Which airlines fly direct to Illinois?

Currently, there are no airlines that fly direct to Illinois. But we found flights with one or more stops from $1,385.

Which is the cheapest airline to fly to Illinois with?

Currently, Fiji Airways and American Airlines offer the cheapest flight tickets to Illinois.

How much is the cheapest flight ticket to Illinois?

We looked at upcoming return flights to Illinois departing over the next 12 months and found that Melbourne Tullamarine Airport to Chicago O'Hare International Airport for $1,385 is the best price.

What is the cheapest month to fly to Illinois?

The cheapest month to fly to Decatur is currently August. The cheapest month to fly to Champaign is currently August. The cheapest month to fly to Chicago O'Hare International is currently August. And the cheapest month to fly to Moline is currently August.

What is the cheapest day to fly to Illinois?

The cheapest day to fly to Chicago O'Hare International is currently Friday, 8 August 2025. The cheapest day to fly to Moline is currently Saturday, 23 August 2025. The cheapest day to fly to Greater Peoria is currently Sunday, 24 August 2025. And the cheapest day to fly to Decatur is currently Sunday, 24 August 2025.

Where's cheapest to fly into in Illinois?

If you're flying from Australia, the cheapest city in Illinois to fly into is Chicago. The cheapest airport serving Chicago at the moment is Chicago O'Hare International Airport.