Cheap flights from Illinois to Sydney from $477
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to Sydney departing on 8/15. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Discover deals from 900+ travel sites with momondo.
Save money when you book flights with momondo
Big names and deals
Big names and deals
Search 100s of travel sites to compare prices.Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customize your results.Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.Price Alerts
Price Alerts
Not ready to book? to track prices.Find the cheapest flights from Illinois to Sydney
Cheap round-trip flights
Cheap one-way flights
Cheap last minute flights
Fiji Airways flights from Illinois to Sydney
Our best Fiji Airways deals on Illinois to Sydney flight tickets
ANA flights from Illinois to Sydney
Our best ANA deals on Illinois to Sydney flight tickets
See travel insights to Sydney from
How to get the cheapest flight ticket from Illinois 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?
In general, August is the cheapest month to fly from Illinois to Sydney. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $864. If you are unable to visit Sydney during the month of August, then departing from Illinois during the month April is also very affordable. Most momondo users find prices during this month for around $877.
What is the cheapest day to depart on your flight to Sydney?
The cheapest day to depart from Illinois to Sydney is on a Saturday when prices can be found for as low as $1,166. The most expensive day to fly to Sydney is Thursday, with ticket prices averaging around $1,391.
What is the cheapest time of day to depart on your flight to Sydney?
According to our data, the cheapest time of day to fly to Sydney is in the morning. momondo users have found flights departing from Illinois to Sydney in the morning for as low as $1,224. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to Sydney are more costly in the evening, with an average ticket price of $1,412. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.
How far in advance should I book a flight to Sydney?
You are more likely to see cheaper flights to Sydney from Illinois when booking 25 weeks ahead of your departure date. In general, you can expect to find flights to Sydney for around $1,104 when searching 25 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Sydney from Illinois for as low as $843 on momondo.
What is the cheapest airline that flies from Illinois to Sydney Kingsford Smith?
Fiji Airways, ANA, and Air Canada are the most popular carriers operating from Illinois to Sydney Kingsford Smith
What airlines fly to Sydney?
American Airlines, Qantas Airways and United Airlines are the top three most popular airlines that fly to Sydney from Illinois according to our data. American Airlines is the first choice among our users, with 49% of people opting to fly with this airline when traveling to Sydney. Keep in mind that there are 8 different airlines that fly to Sydney on a routine basis, so you have a few additional options to choose from.
Cheap Illinois to Sydney flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Illinois to Sydney
When did momondo last update prices for flights from Illinois to Sydney Kingsford Smith Airport?
Prices for flights from Illinois to Sydney Kingsford Smith Airport are updated daily.
How many operators does momondo search for flights from Illinois to Sydney Kingsford Smith Airport?
There are 8 operators available for flights from Illinois to Sydney Kingsford Smith Airport as of April 2025.
How old do you have to be to fly from Illinois 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 Illinois 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.
Best airlines flying from Illinois to Sydney
Compare and see reviews for airlines that fly from Illinois to Sydney with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $679 | Free Cancellation | Rating 8.3 847 reviews | |||
| PriceFrom $806 | Free Cancellation | Rating 7.5 823 reviews | |||
| PriceFrom $825 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $852 | Free Cancellation | Rating 8.0 7,922 reviews | |||
| PriceFrom $976 | Free Cancellation | Rating 7.0 9,168 reviews | |||
| PriceFrom $1,160 | Free Cancellation | Rating 8.1 188 reviews | |||
| PriceFrom $1,187 | Free Cancellation | Rating 7.4 8,684 reviews | |||
| PriceFrom $1,256 | Free Cancellation | Rating 8.0 469 reviews |
Traveling to a place near Sydney?
Book flights to Sydney if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from Illinois to Sydney?
We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Illinois to Sydney for you.
Can I find flights from Illinois to Sydney with flexible booking policies on momondo?
All flight searches from Illinois to Sydney on momondo can be filtered to show those which offer flexible booking policies.
How can momondo help me find flights from Illinois 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 Illinois to Sydney.
I’m not ready to book a flight from Illinois to Sydney right now. Can momondo alert me if prices change?
If you are simply researching potential flights to Sydney, momondo offers a useful price alert feature which will track prices for flights to Sydney from Illinois and alert you when they change.