Cheap flights from Illinois to Australia from $699
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 Australia departing on 26/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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How to get the cheapest flight ticket from Illinois to Australia
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 Australia?
In general, August is the cheapest month to fly from Illinois to Australia. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $1,320. If you don’t want to visit Australia in August, then you should wait until April to fly from Illinois, when ticket prices are also cheap, with an average price of $1,335.
What is the cheapest day to depart on your flight to Australia?
On average, the least expensive day to fly to Australia from Illinois is on a Friday. momondo users have found tickets for Friday departures for as low as $1,417. However, this price may fluctuate depending on the airline, the season, and holidays. Flights from Illinois to Australia on a Thursday will generally be more expensive and average around $3,787. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.
What is the cheapest time of day to depart on your flight to Australia?
According to our data, the cheapest time of day to fly to Australia is in the afternoon. momondo users have found flights departing from Illinois to Australia in the afternoon for as low as $1,817. 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 Australia are more costly in the evening, with an average ticket price of $2,497. 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 Australia?
You are more likely to see cheaper flights to Australia from Illinois when booking 25 weeks ahead of your departure date. In general, you can expect to find flights to Australia for around $1,711 when searching 25 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Australia from Illinois for as low as $1,403 on momondo.
Cheap Illinois to Australia flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Illinois to Australia
When did momondo last update prices for flights from Illinois to Australia?
Prices for flights from Illinois to Australia refresh daily.
How many operators does momondo search for flights from Illinois to Australia?
As of June 2025, there are 3 operators available to choose from for flights from Illinois to Australia.
How old do you have to be to fly from Illinois to Australia?
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 stopovers. It is recommended that you verify with the airline you are booking with for travel from Illinois to Australia.
What documentation or ID do you need to fly to Australia?
The travel and health documents required for your trip to Australia can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s licence, and a passport valid for six-months after you plan to arrive at Australia. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
Best airlines flying from Illinois to Australia
Compare and see reviews for airlines that fly from Illinois to Australia with momondo
| Airline | Rating | Free cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $1,315 | Free cancellation | Rating 7.5 854 reviews | |||
| PriceFrom $1,682 | Free cancellation | Rating 7.1 9,548 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from Illinois to Australia?
momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Illinois to Australia . Millions of users trust and use momondo every year so you are in good hands.
Can I find flights from Illinois to Australia with flexible booking policies on momondo?
Flights from Illinois to Australia with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.
How can momondo help me find flights from Illinois to Australia?
momondo provides multiple filters to help you find the best flight to Australia from Illinois. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.
I’m not ready to book a flight from Illinois to Australia right now. Can momondo alert me if prices change?
If you are simply researching potential flights to Australia, momondo offers a useful price alert feature which will track prices for flights to Australia from Illinois and alert you when they change.