What is the cheapest airline that flies from Illinois to Australia?

Qantas Airways, American Airlines, and ANA are the most popular carriers operating from Illinois to Australia

How long is the flight from Illinois to Australia?

Flight times from Illinois to Australia vary, but if you’re flying out of Chicago and flying into Sydney (one of the most popular routes), then the duration is 21h 55m on average. Another popular route from Illinois to Australia is flying from Peoria to Sydney, which will take roughly 30h 04m. Keep in mind that layovers or delays could extend your travel time.

What airlines fly to Australia?

American Airlines, Qantas Airways and United Airlines are the top three most popular airlines that fly to Australia from Illinois according to our data. American Airlines is the first choice among our users, with 44% of people opting to fly with this airline when traveling to Australia. Keep in mind that there are 9 different airlines that fly to Australia on a routine basis, so you have a few additional options to choose from.

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 February 2025, there are 10 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 that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check 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 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 license 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.

$360 Cheap Flights from Illinois to Australia in 2025

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Find the cheapest flights from Illinois to Australia

Round-trip

One-way

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Cheap round-trip flights

These are some of the best round-trip flight deals from Illinois to Australia that have been recently found on momondo from popular airlines, departing in the coming months.

5:45 pm - 7:15 pmORD-SYD

34h 30m1 stop

11:50 am - 5:04 amSYD-ORD

32h 14m2 stops

$665ANA

Find Deal

Wed, May 14 - Wed, May 21

2:13 pm - 5:00 amORD-BNE

23h 47m1 stop

8:05 am - 9:06 pmBNE-ORD

28h 01m1 stop

$676Qantas Airways

Find Deal

Thu, Mar 13 - Thu, Mar 20

9:45 am - 5:00 amORD-BNE

28h 15m1 stop

10:00 pm - 5:20 amBNE-ORD

22h 20m2 stops

$687American Airlines

Find Deal

Thu, Mar 13 - Thu, Mar 20

9:45 am - 5:00 amORD-BNE

28h 15m1 stop

10:00 pm - 6:25 amBNE-ORD

23h 25m1 stop

$702

Find Deal

Tue, Mar 11 - Tue, Mar 18

2:13 pm - 5:00 amORD-BNE

23h 47m1 stop

8:05 am - 2:39 pmBNE-ORD

21h 34m2 stops

$703American Airlines

Find Deal

Sat, Mar 15 - Wed, Mar 26

10:49 am - 7:10 amORD-BNE

29h 21m2 stops

1:55 am - 3:45 pmBNE-ORD

52h 50m1 stop

$752

Find Deal

Tue, Mar 18 - Mon, Mar 24

3:40 pm - 10:40 pmORD-BNE

40h 00m1 stop

12:10 am - 2:00 pmBNE-ORD

28h 50m1 stop

$760Cathay Pacific

Find Deal

Tue, Mar 18 - Mon, Mar 24

5:30 pm - 6:35 amORD-SYD

22h 05m1 stop

5:35 pm - 12:17 pmSYD-ORD

33h 42m1 stop

$823British Airways

Find Deal

Mon, Apr 14 - Fri, Apr 25

2:10 pm - 6:35 amORD-SYD

25h 25m1 stop

5:35 pm - 5:14 amSYD-ORD

26h 39m1 stop

$830British Airways

Find Deal

Wed, Apr 16 - Wed, Apr 23

4:00 pm - 10:40 pmORD-PER

41h 40m1 stop

12:10 am - 2:25 pmPER-ORD

27h 15m1 stop

$1,455Cathay Pacific

Find Deal

Mon, Apr 7 - Sun, Apr 13

ANA flights from Illinois to Australia

Our best ANA deals on Illinois to Australia flight tickets

ANA

May 14

ORD5:45 pmChicago O'Hare Intl

34h 30m

1 stop

SYD7:15 pmSydney Kingsford Smith

May 21

SYD11:50 amSydney Kingsford Smith

32h 14m

2 stops

ORD5:04 amChicago O'Hare Intl

$665

Find similar

ANA

Apr 6

ORD5:45 pmChicago O'Hare Intl

34h 30m

1 stop

SYD7:15 pmSydney Kingsford Smith

May 18

SYD11:50 amSydney Kingsford Smith

32h 14m

2 stops

ORD5:04 amChicago O'Hare Intl

$710

Find similar

ANA

May 6

ORD5:45 pmChicago O'Hare Intl

34h 30m

1 stop

SYD7:15 pmSydney Kingsford Smith

May 21

SYD8:55 pmSydney Kingsford Smith

46h 56m

2 stops

ORD4:51 amChicago O'Hare Intl

$940

Find similar

British Airways flights from Illinois to Australia

Our best British Airways deals on Illinois to Australia flight tickets

British Airways

Mar 2

ORD12:25 pmChicago O'Hare Intl

24h 45m

1 stop

SYD6:10 amSydney Kingsford Smith

Mar 16

SYD5:25 pmSydney Kingsford Smith

36h 27m

1 stop

ORD1:52 pmChicago O'Hare Intl

$822

Find similar

British Airways

Apr 14

ORD5:30 pmChicago O'Hare Intl

22h 05m

1 stop

SYD6:35 amSydney Kingsford Smith

Apr 25

SYD5:35 pmSydney Kingsford Smith

33h 42m

1 stop

ORD12:17 pmChicago O'Hare Intl

$823

Find similar

British Airways

Apr 16

ORD2:10 pmChicago O'Hare Intl

25h 25m

1 stop

SYD6:35 amSydney Kingsford Smith

Apr 23

SYD5:35 pmSydney Kingsford Smith

26h 39m

1 stop

ORD5:14 amChicago O'Hare Intl

$830

Find similar

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

Prices

Airlines

Other information

What is the cheapest month to fly to Australia?

The month of August is, on average, the cheapest month to fly to Australia from Illinois, with most prices found around $866. If you aren’t able to travel during the month of August, then book flights to Australia from Illinois during March instead. Flights to Australia in March, while not as cheap as those in August, still average around $915.

What is the cheapest day to depart on your flight to Australia?

The cheapest day to depart from Illinois to Australia is on a Saturday. Travelers who choose to depart for Australia on a Saturday will often find tickets for as low as $935. On the other hand, Thursday is the most expensive day to depart from Illinois because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $1,415.

What is the cheapest time of day to depart on your flight to Australia?

Flying to Australia from Illinois in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $1,185 when looking at flights departing in the afternoon. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are $1,417 on average. Flights to Australia from Illinois in the evening are generally more expensive because this time of day is more convenient for travelers’ schedules.

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 $1,130 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 $843 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

Best Price Found	$360
Fastest flight time	20h 30m
Direct flights	None
Airports in Australia	3 airports

The best one-way flight to Australia from Illinois in the past 72 hours is $360. The best round-trip flight deal from Illinois to Australia found on momondo in the last 72 hours is $665.

The fastest flight from Illinois to Australia takes 20h 30m

There are no direct flights from Illinois to Australia. Popular non-direct routes for this connection are Chicago O'Hare Intl Airport - Melbourne Airport, Chicago O'Hare Intl Airport - Sydney Kingsford Smith Airport and Chicago O'Hare Intl Airport - Brisbane Airport.

There are 3 airports near Australia: Melbourne (MEL), Brisbane (BNE), Sydney Kingsford Smith (SYD)

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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 February 2025, there are 10 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 that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check 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 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 license 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 Illinois to Australia

Compare and see reviews for airlines that fly from Illinois to Australia with momondo

Airline	Rating	Free Cancellation	Price
Qantas Airways	PriceFrom $630	Free Cancellation	Rating 7.4 813 reviews	Search Qantas Airways flights
ANA	PriceFrom $679	Free Cancellation	Rating 8.4 836 reviews	Search ANA flights
American Airlines	PriceFrom $679	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Delta	PriceFrom $851	Free Cancellation	Rating 8.0 8,163 reviews	Search Delta flights
Air Canada	PriceFrom $969	Free Cancellation	Rating 7.0 8,782 reviews	Search Air Canada flights
United Airlines	PriceFrom $994	Free Cancellation	Rating 7.4 8,734 reviews	Search United Airlines flights
Cathay Pacific	PriceFrom $1,138	Free Cancellation	Rating 7.5 825 reviews	Search Cathay Pacific flights
Air New Zealand	PriceFrom $1,181	Free Cancellation	Rating 7.9 457 reviews	Search Air New Zealand flights
Singapore Airlines	PriceFrom $1,421	Free Cancellation	Rating 8.1 1,293 reviews	Search Singapore Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Illinois to Australia?

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 Australia for you.

Can I find flights from Illinois to Australia with flexible booking policies on momondo?

Yes. All flights to Australia from Illinois on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Illinois to Australia?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Australia from Illinois.

I’m not ready to book a flight from Illinois to Australia right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Illinois to Australia flights. All you need is a valid email address and we will do the rest; it is that quick and easy.