If you're looking to fly from Chicago O'hare International Airport to Sydney, you might like to know that 13 / Jul / 2025 currently has the cheapest flights. At the moment, there are zero airlines flying to Sydney. Go through the results to find the right flights for you – you can adjust the filters to see find even more flights to Sydney.
If you can't find a flight time that suits you, why not look at flying out from a different airport?
Take a look at flight times to see which one works best for you.
If you need somewhere to stay for your trip to Australia, take a look at our accommodation options.
