Cheap flights from Chicago to Australia from $745
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Chicago to Australia departing on 15/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Discover deals from 900+ travel sites with momondo.
Save money when you book flights with momondo
Big names, great deals
Big names, great deals
Search 100s of travel sites to compare prices.Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customise 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 Chicago to Australia
Cheap return flights
Cheap one-way flights
Cheap last-minute flights
Alaska Airlines flights from Chicago to Australia
Our best Alaska Airlines deals on Chicago to Australia flight tickets
Delta flights from Chicago to Australia
Our best Delta deals on Chicago to Australia flight tickets
See travel insights to Australia from
How to get the cheapest flight ticket from Chicago 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 Chicago to Australia. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $1,319. If you don’t want to visit Australia in August, then you should wait until April to fly from Chicago, when ticket prices are also cheap, with an average price of $1,330.
What is the cheapest day to depart on your flight to Australia?
On average, the least expensive day to fly to Australia from Chicago is on a Friday. momondo users have found tickets for Friday departures for as low as $1,412. However, this price may fluctuate depending on the airline, the season, and holidays. Flights from Chicago to Australia on a Thursday will generally be more expensive and average around $3,772. 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 Chicago to Australia in the afternoon for as low as $1,809. 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 $2,487. 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 Chicago when booking 25 weeks ahead of your departure date. In general, you can expect to find flights to Australia for around $1,705 when searching 25 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Australia from Chicago for as low as $1,327 on momondo.
Cheap Chicago to Australia flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Chicago to Australia
When did momondo last update prices for flights from Chicago to Australia?
Prices for flights from Chicago to Australia are updated daily.
How many operators does momondo search for flights from Chicago to Australia?
As of June 2025, there are 2 operators available to choose from for flights from Chicago to Australia.
How old do you have to be to fly from Chicago to Australia?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and stopovers. It is recommended that you verify with the airline you are booking with for travel from Chicago to Australia.
What documentation or ID do you need to fly to Australia?
The required travel and health documents for your Australia 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 licence and a passport valid for six months after your intended arrival at Australia. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
Best airlines flying from Chicago to Australia
Compare and see reviews for airlines that fly from Chicago to Australia with momondo
| Airline | Rating | Free cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $1,309 | Free cancellation | Rating 7.5 854 reviews | |||
| PriceFrom $1,675 | Free cancellation | Rating 7.1 9,517 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from Chicago to Australia?
Finding the right flight to Australia from Chicago is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Australia quick and easy, saving you time and money.
Can I find flights from Chicago to Australia with flexible booking policies on momondo?
Yes. All flights to Australia from Chicago on momondo can be compared and filtered by various policies on offer, including flexible booking.
How can momondo help me find flights from Chicago to Australia?
Once all potential Chicago to Australia flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.
I’m not ready to book a flight from Chicago 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 Chicago and alert you when they change.