Users have found that booking a flight from Chicago-O'Hare Intl to Australia at least 46 days early can save you up to 16% on average compared to booking a flight this week. If booking 46 days before your flight isn’t an option for you, users have found flights from Chicago-O'Hare Intl to Australia for as little as $972 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $1089 for flights departing within the next 3 days.
Due to multiple factors, expect to potentially pay more when booking in December. For low rates, March can be a great choice for travel to Australia. Flights to Australia from Chicago-O'Hare Intl in March are about $1040 on average during March, but can be found for as low as $734.