$739 Find Cheap Flights from Illinois to Australia – Compare and Save

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 Illinois to Australia.

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Illinois to Australia is likely to change within 7 days, so travellers know whether to wait or book now.

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly from Illinois to Australia with an airline and back with another airline.

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 Illinois to Australia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

There are 120 airports in Australia. The busiest airport is Sydney Airport (SYD), with 26% of all flights arriving there.

The cheapest month for flights from Illinois to Australia is November, when tickets cost $763 (return) on average. On the other hand, the most expensive months are June and December, when the average cost of round-trip tickets is $1,542 and $1,512 respectively.

To get a below-average price on a flight from Illinois to Australia, you should book around 2 weeks before departure, which saves you about 18% compared to booking last-minute. For the absolute cheapest price, our data suggests you should book 9 weeks before departure.

An average direct flight from Illinois to Australia takes 32h 16m, covering a distance of 24155 km. The shortest route is Chicago O'Hare Intl Airport (ORD) to Melbourne Airport (MEL) with an average flight time of 22h 24m.

Based on KAYAK flight searches, the most popular destination is Sydney (49% of total searches to Australia). The next most popular destinations are Melbourne (34%) and Brisbane (6%). Searches for flights to Perth (3%), to Hobart (1%), and to Canberra (1%) are also popular.