If you're looking to fly from Chicago O'hare International Airport to Sydney, you might like to know that 04 / Feb / 2025 currently has the cheapest flights. At the moment, there are 11 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.
The most popular airlines offering flights to Sydney are American Airlines, Air Canada & British Airways. American Airlines is the most popular one, but that doesn’t mean their flights will be the cheapest. If you can't find a flight time that suits you, why not look at flying out from a different airport?
Your flight from Chicago O'hare International Airport to Sydney will take at least 21 hrs. On average, it takes 28 hrs 15 mins to fly the 14874 km distance. 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.