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How to get the cheapest flight ticket from Chicago to Sydney
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to Sydney?
The month of August is, on average, the cheapest month to fly to Sydney from Chicago, with most prices found around ₹ 75,005. If you aren’t able to travel during the month of August, then book flights to Sydney from Chicago during March instead. Flights to Sydney in March, while not as cheap as those in August, still average around ₹ 79,249.
What is the cheapest time of day to depart on your flight to Sydney?
Our data shows that the cheapest Chicago to Sydney flights are usually those with departure times in the morning. Our users have found flights to Sydney in the morning for as low as ₹ 0. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are ₹ 111,572 on average. Flights to Sydney from Chicago in the afternoon are generally more expensive because this time of day is more convenient for travellers’ schedules.
How far in advance should I book a flight to Sydney?
You are more likely to see cheaper flights to Sydney from Chicago when booking 25 weeks ahead of your departure date. In general, you can expect to find flights to Sydney for around ₹ 97,892 when searching 25 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Sydney from Chicago for as low as ₹ 73,013 on momondo.
How have Chicago to Sydney flight prices changed over time?
As of February 2025, prices for Chicago to Sydney flights are approximately 58% cheaper when compared to flights at the same time last year.
When to book flights from Chicago to Sydney
Cheap Chicago to Sydney (CHI to SYD) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Chicago to Sydney
How far is Chicago to Sydney Kingsford Smith by plane?
Sydney Kingsford Smith is 14866.2 km away from Chicago.
When did momondo last update prices for flights from Chicago to Sydney Kingsford Smith Airport?
Prices for flights from Chicago to Sydney Kingsford Smith Airport are refreshed on a daily basis.
How old do you have to be to fly from Chicago to Sydney Kingsford Smith Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Chicago to Sydney Kingsford Smith Airport.
What documentation or ID do you need to fly to Sydney Kingsford Smith Airport?
The required travel and health documents for your Sydney Kingsford Smith Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Sydney Kingsford Smith Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
Why use momondo?
Why should I use momondo to find a flight deal from Chicago to Sydney?
momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Chicago to Sydney . Millions of users trust and use momondo every year so you are in good hands.
Can I find flights from Chicago to Sydney with flexible booking policies on momondo?
All flight searches from Chicago to Sydney on momondo can be filtered to show those which offer flexible booking policies.
How can momondo help me find flights from Chicago to Sydney?
momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Chicago to Sydney.
I’m not ready to book a flight from Chicago to Sydney right now. Can momondo alert me if prices change?
Of course. momondo tracks the price of Chicago to Sydney flights. All you need is a valid email address and we will do the rest; it is that quick and easy.