Which airlines fly to Illinois?

Qantas Airways, American Airlines and Air Canada 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 46% 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.

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

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 November 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.

$618 Cheap Flights from Sydney to Illinois in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Sydney to Illinois

Return

One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

11:20 - 22:55SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

28h 35m1 stop Los Angeles

18:46 - 09:00ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

21h 14m1 stop Los Angeles

$1,053American Airlines

Thu, 18 Feb - Mon, 22 Feb

09:15 - 16:37SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

46h 22m2 stops Los Angeles Atlanta Hartsfield-Jackson

17:55 - 06:50ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

45h 55m2 stops Atlanta Hartsfield-Jackson Los Angeles

$1,059Delta

Mon, 26 Apr - Sat, 8 May

10:40 - 23:55SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

30h 15m1 stop Los Angeles

07:45 - 08:30ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

31h 45m1 stop Los Angeles

$1,059Delta

Mon, 16 Nov - Mon, 30 Nov

11:10 - 16:05SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

21h 55m1 stop Los Angeles

21:03 - 09:00ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

42h 57m1 stop Los Angeles

$1,085Qantas Airways

Mon, 16 Nov - Mon, 30 Nov

14:05 - 14:18SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

41h 13m1 stop Dallas/Fort Worth

16:59 - 09:00ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

23h 01m1 stop Los Angeles

$1,099Qantas Airways

Thu, 18 Feb - Mon, 22 Feb

11:15 - 16:42SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

22h 27m1 stop Los Angeles

17:15 - 09:00ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

22h 45m1 stop Los Angeles

$1,120Multiple Airlines

Thu, 26 Nov - Thu, 3 Dec

11:10 - 18:00SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

23h 50m2 stops Los Angeles Phoenix Sky Harbor Intl

06:00 - 09:00ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

34h 00m1 stop Los Angeles

$1,123American Airlines

Fri, 25 Dec - Tue, 19 Jan

11:30 - 16:55SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

46h 25m1 stop Manila Ninoy Aquino Intl

22:45 - 09:50ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

42h 05m1 stop Manila Ninoy Aquino Intl

$1,467Philippine Airlines

Thu, 19 Nov - Fri, 4 Dec

14:05 - 22:00SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

24h 55m2 stops Auckland Intl Los Angeles

12:55 - 10:35ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

28h 40m2 stops Los Angeles Auckland Intl

$1,850Air New Zealand

Thu, 19 Nov - Fri, 4 Dec

07:30 - 20:38SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

30h 08m2 stops Auckland Intl Los Angeles

14:25 - 08:35ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

25h 10m2 stops San Francisco Auckland Intl

$1,874Air New Zealand

Mon, 1 Feb - Sat, 20 Feb

Cheap last-minute flights

Enter your travel dates to find the best prices.

11:10 - 17:00SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

22h 50m1 stop Los Angeles

18:45 - 09:00ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

21h 15m1 stop Los Angeles

$1,049Qantas Airways

Wed, 4 Nov - Wed, 11 Nov

11:10 - 17:00SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

22h 50m1 stop Los Angeles

18:45 - 09:00ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

21h 15m1 stop Los Angeles

$1,052Qantas Airways

Wed, 4 Nov - Wed, 11 Nov

11:10 - 17:59SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

23h 49m1 stop Los Angeles

21:03 - 09:00ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

42h 57m1 stop Los Angeles

$1,055American Airlines

Mon, 9 Nov - Mon, 23 Nov

11:10 - 17:59SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

23h 49m1 stop Los Angeles

21:03 - 09:00ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

42h 57m1 stop Los Angeles

$1,056American Airlines

Mon, 9 Nov - Mon, 23 Nov

10:40 - 23:55SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

30h 15m1 stop Los Angeles

07:30 - 08:30ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

32h 00m2 stops Salt Lake City Los Angeles

$1,059Delta

Mon, 9 Nov - Mon, 23 Nov

10:40 - 23:55SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

30h 15m1 stop Los Angeles

14:32 - 08:30ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

24h 58m1 stop Los Angeles

$1,059Delta

Mon, 9 Nov - Mon, 23 Nov

14:00 - 05:13SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

32h 13m3 stops Nadi Los Angeles Las Vegas Harry Reid Intl

12:05 - 12:35ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

31h 30m3 stops Phoenix Sky Harbor Intl Los Angeles Nadi

$1,562Multiple Airlines

Mon, 9 Nov - Mon, 23 Nov

14:00 - 05:13SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

32h 13m3 stops Nadi Los Angeles Las Vegas Harry Reid Intl

12:05 - 12:35ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

31h 30m3 stops Phoenix Sky Harbor Intl Los Angeles Nadi

$1,570Multiple Airlines

Mon, 9 Nov - Mon, 23 Nov

11:20 - 08:00SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

37h 40m3 stops Vancouver Intl Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl

13:57 - 09:35ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

26h 38m2 stops Toronto Pearson Intl Vancouver Intl

$3,605Air Canada

Wed, 4 Nov - Wed, 11 Nov

11:20 - 08:00SYD Sydney Kingsford Smith-ORD Chicago O'Hare Intl

37h 40m3 stops Vancouver Intl Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl

07:05 - 09:35ORD Chicago O'Hare Intl-SYD Sydney Kingsford Smith

33h 30m3 stops Montreal Pierre Elliott Trudeau Intl Toronto Pearson Intl Vancouver Intl

$3,611Air Canada

Wed, 4 Nov - Wed, 11 Nov

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Qantas Airways flights from Sydney to Illinois

Our best Qantas Airways deals on Sydney to Illinois flight tickets

Qantas Airways

4 Nov

SYD11:10Sydney Kingsford Smith

22h 50m

1 stop

ORD17:00Chicago O'Hare Intl

11 Nov

ORD18:45Chicago O'Hare Intl

21h 15m

1 stop

SYD09:00Sydney Kingsford Smith

$1,052

Qantas Airways

16 Nov

SYD11:10Sydney Kingsford Smith

21h 55m

1 stop

ORD16:05Chicago O'Hare Intl

30 Nov

ORD21:03Chicago O'Hare Intl

42h 57m

1 stop

SYD09:00Sydney Kingsford Smith

$1,085

Qantas Airways

18 Feb

SYD14:05Sydney Kingsford Smith

41h 13m

1 stop

ORD14:18Chicago O'Hare Intl

22 Feb

ORD16:59Chicago O'Hare Intl

23h 01m

1 stop

SYD09:00Sydney Kingsford Smith

$1,099

Delta flights from Sydney to Illinois

Our best Delta deals on Sydney to Illinois flight tickets

Delta

9 Nov

SYD10:40Sydney Kingsford Smith

30h 15m

1 stop

ORD23:55Chicago O'Hare Intl

23 Nov

ORD14:32Chicago O'Hare Intl

24h 58m

1 stop

SYD08:30Sydney Kingsford Smith

$1,059

Delta

20 Jan

SYD10:40Sydney Kingsford Smith

20h 13m

1 stop

ORD13:53Chicago O'Hare Intl

31 Jan

ORD12:42Chicago O'Hare Intl

25h 08m

2 stops

SYD06:50Sydney Kingsford Smith

$1,060

Delta

9 Nov

SYD10:40Sydney Kingsford Smith

24h 50m

2 stops

ORD18:30Chicago O'Hare Intl

23 Nov

ORD08:29Chicago O'Hare Intl

31h 01m

2 stops

SYD08:30Sydney Kingsford Smith

$1,062

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Thu 18/2

11:20-22:55

1 stop28h 35m

Chicago O'Hare Intl

Mon 22/2

18:46-09:00

1 stop21h 14m

$1,053

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Mon 26/4

09:15-16:37

2 stops46h 22m

Chicago O'Hare Intl

Sat 8/5

17:55-06:50

2 stops45h 55m

$1,059

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Mon 16/11

10:40-23:55

1 stop30h 15m

Chicago O'Hare Intl

Mon 30/11

07:45-08:30

1 stop31h 45m

$1,059

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Mon 16/11

11:10-16:05

1 stop21h 55m

Chicago O'Hare Intl

Mon 30/11

21:03-09:00

1 stop42h 57m

$1,085

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Thu 18/2

14:05-14:18

1 stop41h 13m

Chicago O'Hare Intl

Mon 22/2

16:59-09:00

1 stop23h 01m

$1,099

Fastest return journey

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Thu 26/11

11:15-16:42

1 stop22h 27m

Chicago O'Hare Intl

Thu 3/12

17:15-09:00

1 stop22h 45m

$1,120

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Fri 25/12

11:10-18:00

2 stops23h 50m

Chicago O'Hare Intl

Tue 19/1

06:00-09:00

1 stop34h 00m

$1,123

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Thu 19/11

11:30-16:55

1 stop46h 25m

Chicago O'Hare Intl

Fri 4/12

22:45-09:50

1 stop42h 05m

$1,467

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Thu 19/11

14:05-22:00

2 stops24h 55m

Chicago O'Hare Intl

Fri 4/12

12:55-10:35

2 stops28h 40m

$1,850

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Mon 1/2

07:30-20:38

2 stops30h 08m

Chicago O'Hare Intl

Sat 20/2

14:25-08:35

2 stops25h 10m

$1,874

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, October 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 $1,523. If you’re not able to fly to Illinois in October, then November is your next best option. Flight prices from Sydney to Illinois during November average around $1,625.

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 $2,101 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 $1,254 on momondo.

Can stopping save me money on Sydney to Illinois flights?

You could potentially save up to 43% 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

Best price found	$618
Fastest flight time	22h 50m
Direct flights	None

The best one-way flight to Illinois from Sydney in the past 72 hours is $618. The best return flight deal from Sydney to Illinois found on momondo in the last 72 hours is $1,053.

The fastest flight from Sydney to Illinois takes 22h 50m

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 November 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 $959	Free cancellation	Rating 7.1 11,847 reviews	Search Air Canada flights
American Airlines	PriceFrom $967	Free cancellation	Rating 7.0 12,230 reviews	Search American Airlines flights
Delta	PriceFrom $1,060	Free cancellation	Rating 7.8 8,696 reviews	Search Delta flights
Air New Zealand	PriceFrom $1,355	Free cancellation	Rating 8.0 681 reviews	Search Air New Zealand flights
United Airlines	PriceFrom $1,417	Free cancellation	Rating 7.3 10,460 reviews	Search United Airlines flights
Qantas Airways	PriceFrom $1,512	Free cancellation	Rating 7.5 1,122 reviews	Search Qantas Airways 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.