What is the cheapest airline that flies from Sydney Kingsford Smith to Illinois?

Delta is the most popular carrier operating from Sydney Kingsford Smith to Illinois

Which airlines fly to Illinois?

Qantas Airways, Air Canada and Air New Zealand are the top three most popular airlines that fly to Illinois from Sydney according to our data. Qantas Airways is the first choice among our users, with 37% of people opting to fly with this airline when travelling to Illinois. Keep in mind that there are 6 different airlines that fly to Illinois on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Sydney Kingsford Smith Airport to Illinois?

Prices for flights from Sydney Kingsford Smith Airport to Illinois were last updated today.

How many operators does momondo search for flights from Sydney Kingsford Smith Airport to Illinois?

The number of operators available for flights from Sydney Kingsford Smith Airport to Illinois is 6 as of April 2026.

How old do you have to be to fly from Sydney Kingsford Smith Airport to Illinois?

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 Sydney Kingsford Smith Airport to Illinois.

What documentation or ID do you need to fly to Illinois?

The travel and health documents required for your trip to Illinois 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 Illinois. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$897 Cheap Flights from Sydney to Illinois in 2026

1 adult

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Find the cheapest flights from Sydney to Illinois

Round-trip

One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

09:20 - 12:06

SYD

STL

41h 46m

2 stops

16:48 - 07:20

STL

SYD

23h 32m

2 stops

$1,428Multiple Airlines

Wed, 20 May - Thu, 28 May

09:20 - 12:06

SYD

STL

41h 46m

2 stops

16:48 - 07:20

STL

SYD

23h 32m

2 stops

$1,431Multiple Airlines

Wed, 20 May - Thu, 28 May

09:20 - 12:06

SYD

STL

41h 46m

2 stops

16:48 - 07:20

STL

SYD

23h 32m

2 stops

$1,482Multiple Airlines

Wed, 20 May - Thu, 28 May

09:20 - 12:06

SYD

STL

41h 46m

2 stops

16:48 - 07:20

STL

SYD

23h 32m

2 stops

$1,488Multiple Airlines

Wed, 20 May - Thu, 28 May

09:20 - 23:57

SYD

STL

53h 37m

2 stops

08:40 - 07:20

STL

SYD

31h 40m

2 stops

$1,491Air Canada

Wed, 10 Jun - Wed, 17 Jun

09:20 - 23:57

SYD

STL

29h 37m

2 stops

08:40 - 07:20

STL

SYD

55h 40m

2 stops

$1,495Air Canada

Wed, 10 Jun - Wed, 17 Jun

11:45 - 21:04

SYD

ORD

48h 19m

2 stops

17:45 - 09:25

ORD

SYD

24h 40m

1 stop

$1,719ANA

Fri, 5 Jun - Wed, 12 Aug

11:45 - 21:04

SYD

ORD

48h 19m

2 stops

17:45 - 19:10

ORD

SYD

34h 25m

1 stop

$1,785ANA

Thu, 4 Jun - Wed, 12 Aug

09:15 - 18:33

SYD

MDW

24h 18m

2 stops

13:22 - 06:50

MDW

SYD

26h 28m

2 stops

$2,360Delta

Thu, 21 May - Wed, 3 Jun

09:15 - 21:09

SYD

MDW

26h 54m

2 stops

14:00 - 06:50

MDW

SYD

25h 50m

2 stops

$2,361Delta

Thu, 4 Jun - Wed, 12 Aug

ANA flights from Sydney to Illinois

Our best ANA deals on Sydney to Illinois flight tickets

ANA

5 June

SYD11:45Sydney Kingsford Smith

48h 19m

2 stops

ORD21:04Chicago O'Hare Intl

12 Aug

ORD17:45Chicago O'Hare Intl

24h 40m

1 stop

SYD09:25Sydney Kingsford Smith

$1,719

ANA

4 June

SYD11:45Sydney Kingsford Smith

48h 19m

2 stops

ORD21:04Chicago O'Hare Intl

12 Aug

ORD17:45Chicago O'Hare Intl

34h 25m

1 stop

SYD19:10Sydney Kingsford Smith

$1,785

ANA

14 June

SYD20:55Sydney Kingsford Smith

38h 40m

2 stops

ORD20:35Chicago O'Hare Intl

20 July

ORD17:45Chicago O'Hare Intl

24h 40m

1 stop

SYD09:25Sydney Kingsford Smith

$1,792

Air Canada flights from Sydney to Illinois

Our best Air Canada deals on Sydney to Illinois flight tickets

Air Canada

10 June

SYD09:20Sydney Kingsford Smith

53h 37m

2 stops

STL23:57Lambert-St Louis

17 June

STL08:40Lambert-St Louis

31h 40m

2 stops

SYD07:20Sydney Kingsford Smith

$1,491

Air Canada

10 June

SYD09:20Sydney Kingsford Smith

29h 37m

2 stops

STL23:57Lambert-St Louis

17 June

STL08:40Lambert-St Louis

55h 40m

2 stops

SYD07:20Sydney Kingsford Smith

$1,495

Air Canada

10 Aug

SYD09:20Sydney Kingsford Smith

50h 19m

2 stops

STL20:39Lambert-St Louis

3 Sept

STL05:10Lambert-St Louis

35h 10m

2 stops

SYD07:20Sydney Kingsford Smith

$1,507

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Wed 20/5

09:20-12:06

2 stops41h 46m

Lambert-St Louis

Thu 28/5

16:48-07:20

2 stops23h 32m

$1,428

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Wed 20/5

09:20-12:06

2 stops41h 46m

Lambert-St Louis

Thu 28/5

16:48-07:20

2 stops23h 32m

$1,431

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Wed 20/5

09:20-12:06

2 stops41h 46m

Lambert-St Louis

Thu 28/5

16:48-07:20

2 stops23h 32m

$1,482

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Wed 20/5

09:20-12:06

2 stops41h 46m

Lambert-St Louis

Thu 28/5

16:48-07:20

2 stops23h 32m

$1,488

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Wed 10/6

09:20-23:57

2 stops53h 37m

Lambert-St Louis

Wed 17/6

08:40-07:20

2 stops31h 40m

$1,491

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Wed 10/6

09:20-23:57

2 stops29h 37m

Lambert-St Louis

Wed 17/6

08:40-07:20

2 stops55h 40m

$1,495

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Fri 5/6

11:45-21:04

2 stops48h 19m

Chicago O'Hare Intl

Wed 12/8

17:45-09:25

1 stop24h 40m

$1,719

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Thu 4/6

11:45-21:04

2 stops48h 19m

Chicago O'Hare Intl

Wed 12/8

17:45-19:10

1 stop34h 25m

$1,785

Fastest return journey

SydneyChicago

SYD - MDW

SYDMDW

Sydney Kingsford Smith

Thu 21/5

09:15-18:33

2 stops24h 18m

Chicago Midway

Wed 3/6

13:22-06:50

2 stops26h 28m

$2,360

SydneyChicago

SYD - MDW

SYDMDW

Sydney Kingsford Smith

Thu 4/6

09:15-21:09

2 stops26h 54m

Chicago Midway

Wed 12/8

14:00-06:50

2 stops25h 50m

$2,361

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Sydney to Illinois

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

What is the cheapest month to fly to Illinois?

In general, December is the cheapest month to fly from Sydney to Illinois. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $652. If you’re not able to fly to Illinois in December, then August is your next best option. Flight prices from Sydney to Illinois during August average around $874.

How far in advance should I book a flight from Sydney to Illinois?

You are more likely to see cheaper flights to Illinois from Sydney when booking weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around $1,856 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Illinois from Sydney for as low as $1,375 on momondo.

Can stopping save me money on Sydney to Illinois flights?

You could potentially save up to 52% on your flight if you consider stops on a Sydney to Illinois flight.

Cheap Sydney to Illinois flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Sydney to Illinois

Fastest flight time	21h 39m
Direct flights	None

The fastest flight from Sydney to Illinois takes 21h 39m

There are no direct flights from Sydney to Illinois. There are no popular flight routes from Sydney to Illinois.

Search flight deals

Frequently asked questions about flying from Sydney to Illinois

When did momondo last update prices for flights from Sydney Kingsford Smith Airport to Illinois?
Prices for flights from Sydney Kingsford Smith Airport to Illinois were last updated today.
How many operators does momondo search for flights from Sydney Kingsford Smith Airport to Illinois?
The number of operators available for flights from Sydney Kingsford Smith Airport to Illinois is 6 as of April 2026.
How old do you have to be to fly from Sydney Kingsford Smith Airport to Illinois?
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 Sydney Kingsford Smith Airport to Illinois.
What documentation or ID do you need to fly to Illinois?
The travel and health documents required for your trip to Illinois 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 Illinois. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Sydney to Illinois

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

Airline	Rating	Free cancellation	Price
Air Canada	PriceFrom $1,055	Free cancellation	Rating 7.1 10,975 reviews	Search Air Canada flights
American Airlines	PriceFrom $1,087	Free cancellation	Rating 7.1 11,674 reviews	Search American Airlines flights
Qantas Airways	PriceFrom $1,229	Free cancellation	Rating 7.5 1,028 reviews	Search Qantas Airways flights
Air New Zealand	PriceFrom $1,318	Free cancellation	Rating 8.0 638 reviews	Search Air New Zealand flights
United Airlines	PriceFrom $1,378	Free cancellation	Rating 7.4 9,672 reviews	Search United Airlines flights
ANA	PriceFrom $1,464	Free cancellation	Rating 8.4 1,199 reviews	Search ANA flights

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Sydney to Illinois . Millions of users trust and use momondo every year so you are in good hands.

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

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

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

momondo provides multiple filters to help you find the best flight to Illinois from Sydney. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Price alerts on flights to Illinois from Sydney are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.