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$414+ Cheap flights from Illinois to Sydney (SYD)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/30. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SYD
Jan 26 — Feb 21
Sun 1/26
Sun 2/2
1 adult, Economy
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Cheap flight deals from Illinois to Sydney

Discover tips and strategies to find the most affordable flight options for your journey from Illinois (USIL) to Sydney (SYD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 21, 2025.

Round-trip from

$848
(Ovago)

One-way from

$414
(American Airlines)
From Illinois to Sydney Kingsford Smith
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One-way flight from Illinois to Sydney Kingsford Smith
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Find flight deals from Illinois to Sydney

Cheapest flights from Illinois to Sydney
Explore the most affordable flight options available from Illinois to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 21, 2025.

This Ovago deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/43:22 pmORD - SYD
1 stop22h 13mQantas Airways
Mon 2/1011:15 amSYD - ORD
1 stop23h 30mQantas Airways
Deal found 1/20$848
This Flighttix deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flighttix is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/232:14 pmORD - SYD
1 stop24h 11mBritish Airways
Wed 2/511:50 amSYD - ORD
1 stop22h 48mBritish Airways
Deal found 1/20$851
This American Airlines deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/282:13 pmORD - SYD
1 stop24h 12mAmerican Airlines
Sun 3/95:25 pmSYD - ORD
1 stop29h 00mAmerican Airlines
Deal found 1/20$856
This CheapTickets.ch deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapTickets.ch is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/67:00 amORD - SYD
2 stops33h 00mMultiple Airlines
Thu 3/1311:50 amSYD - ORD
1 stop19h 23mMultiple Airlines
Deal found 1/20$880
This Cheapflightsfares deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/67:45 pmORD - SYD
2 stops32h 30mANA
Tue 5/278:55 pmSYD - ORD
1 stop26h 45mANA
Deal found 1/20$962
This eDestinos deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/712:49 pmMDW - SYD
3 stops54h 41mMultiple Airlines
Fri 3/146:15 amSYD - MDW
3 stops39h 16mMultiple Airlines
Deal found 1/21$1,022
This Jetabroad deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/62:55 pmSTL - SYD
2 stops31h 40mMultiple Airlines
Sun 11/165:25 pmSYD - STL
2 stops23h 31mMultiple Airlines
Deal found 1/20$1,052
This Gotogate deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/271:27 pmSTL - SYD
2 stops38h 48mANA
Wed 9/2411:50 amSYD - STL
2 stops43h 45mANA
Deal found 1/20$1,157
This Air Canada deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/171:30 pmSTL - SYD
2 stops50h 50mAir Canada
Tue 7/19:20 amSYD - STL
2 stops44h 56mAir Canada
Deal found 1/20$1,229
This American Airlines deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/203:48 pmSTL - SYD
2 stops25h 12mAmerican Airlines
Fri 3/2811:15 amSYD - STL
2 stops24h 14mAmerican Airlines
Deal found 1/21$1,244
This oojo deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/65:37 pmSTL - SYD
2 stops26h 23mFiji Airways
Thu 3/132:00 pmSYD - STL
2 stops25h 09mFiji Airways
Deal found 1/20$1,423
This United Airlines deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/271:30 pmSTL - SYD
2 stops26h 30mUnited Airlines
Wed 9/2410:20 amSYD - STL
1 stop21h 43mUnited Airlines
Deal found 1/20$1,455

Find flights from Illinois to Sydney within your budget

Customize your flight search to find flights from Illinois to Sydney that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 21, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Tue 2/4

3:22 pm-6:35 am

1 stop22h 13m

Sydney Kingsford Smith

Mon 2/10

11:15 am-5:45 pm

1 stop23h 30m

$848

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Fri 2/28

2:13 pm-7:25 am

1 stop24h 12m

Sydney Kingsford Smith

Sun 3/9

5:25 pm-5:25 am

1 stop29h 00m

$856

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Fri 1/24

8:30 am-6:10 am

1 stop28h 40m

Sydney Kingsford Smith

Thu 2/6

11:50 am-2:25 pm

1 stop19h 35m

$858

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Sun 3/9

2:13 pm-7:25 am

1 stop25h 12m

Sydney Kingsford Smith

Sun 3/23

9:25 pm-6:33 am

1 stop25h 08m

$861

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Thu 3/6

7:00 am-9:00 am

2 stops33h 00m

Sydney Kingsford Smith

Thu 3/13

11:50 am-3:13 pm

1 stop19h 23m

$880

ChicagoSydney

MDW - SYD

MDWSYD

Chicago Midway

Fri 3/7

12:49 pm-12:30 pm

3 stops54h 41m

Sydney Kingsford Smith

Fri 3/14

6:15 am-5:31 am

3 stops39h 16m

$1,022

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Thu 2/20

11:25 am-1:00 pm

2 stops32h 35m

Sydney Kingsford Smith

Thu 3/20

2:00 pm-7:29 pm

2 stops21h 29m

$1,148

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Tue 2/11

4:55 pm-12:30 pm

2 stops26h 35m

Sydney Kingsford Smith

Tue 6/24

6:15 am-8:23 pm

2 stops29h 08m

$1,155

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Tue 6/17

1:30 pm-7:20 am

2 stops50h 50m

Sydney Kingsford Smith

Tue 7/1

9:20 am-3:16 pm

2 stops44h 56m

$1,229

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Thu 3/20

3:48 pm-9:00 am

2 stops25h 12m

Sydney Kingsford Smith

Fri 3/28

11:15 am-7:29 pm

2 stops24h 14m

$1,244

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/21

Showing 1-10 of 52 results
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Best time to book a flight from Illinois to Sydney

Have a flexible travel schedule? Discover the best time to fly to Sydney from Illinois with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from Illinois to Sydney

Get recent, data-driven insights about flights from Illinois to Sydney including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from Illinois to Sydney?

Currently, February is the cheapest month in which you can book a flight from Illinois to Sydney (average of $1,051). Flying from Illinois to Sydney in December is currently the most expensive (average of $1,643). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from IL to SYD?

Find hourly flight availability from Illinois to Sydney. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 21, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Illinois to Sydney as you normally would.

Rainfall in Sydney by month

Plan your trip to Sydney by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Sydney ranges from 2.0 - 5.1 inches per month. March is typically the wettest month, when rainfall can reach 5.1 in. September is typically the driest time to visit Sydney when rainfall is around 2.0 in.

Temperature in Sydney by month

Plan your trip to Sydney by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Sydney, use this chart to help with planning. For those seeking warmer temperatures, January is the ideal time of year to visit, when temperatures reach an average of 71.6 F. Travelers looking to avoid the cold should look outside of July, when temperatures are typically at their lowest (around 51.8 F).

Reviews of airlines servicing Sydney

Get insights into the airlines that provide service to Sydney. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Sydney. Reviews last updated January 21, 2025.
See what other customers who have flown with Delta, Cathay Pacific and American Airlines from Illinois to Sydney have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Air Tahiti Nui
8.8
Very good
62 reviews

Food

7.8

Entertainment

7.3

Boarding

8.7

Comfort

8.1

Crew

9.1

Overall

8.8

Reviews

1 / 2

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.

Air Tahiti Nui
8.8
Very good
62 reviews
Air Tahiti Nui
8.8
Very good
62 reviews

Food

7.8

Entertainment

7.3

Boarding

8.7

Comfort

8.1

Crew

9.1

Overall

8.8

Reviews

1 / 2

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.

Korean Air
8.5
Very good
1,039 reviews
Air Tahiti Nui
8.8
Very good
62 reviews

Food

7.8

Entertainment

7.3

Boarding

8.7

Comfort

8.1

Crew

9.1

Overall

8.8

Reviews

1 / 2

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.

ANA
8.4
Very good
852 reviews
Air Tahiti Nui
8.8
Very good
62 reviews

Food

7.8

Entertainment

7.3

Boarding

8.7

Comfort

8.1

Crew

9.1

Overall

8.8

Reviews

1 / 2

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.

Singapore Airlines
8.1
Very good
1,328 reviews
Air Tahiti Nui
8.8
Very good
62 reviews

Food

7.8

Entertainment

7.3

Boarding

8.7

Comfort

8.1

Crew

9.1

Overall

8.8

Reviews

1 / 2

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.

Fiji Airways
8.1
Very good
188 reviews
Air Tahiti Nui
8.8
Very good
62 reviews

Food

7.8

Entertainment

7.3

Boarding

8.7

Comfort

8.1

Crew

9.1

Overall

8.8

Reviews

1 / 2

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.

Related info for your journey

Find useful and relevant information for your journey from Illinois to Sydney. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Sydney from Illinois?

    If you book a flight to Sydney from Illinois, you will be flying to Kingsford Smith, which is the city’s only airport. Sydney Kingsford Smith (SYD) is located 4.6 mi from the center of Sydney.

  • What are the cheapest airlines to fly from Illinois to Sydney one-way?

    For one-way options, check prices for American Airlines. According to our data, you can fly for as low as $414. Users have also found prices from $423 and $567 on Qantas Airways and Fiji Airways, respectively.

  • What are the most popular routes from Illinois to Sydney?

    While some choose either Chicago Midway - Sydney Kingsford Smith or Lambert-St Louis - Sydney Kingsford Smith, Chicago O'Hare Intl - Sydney Kingsford Smith is the most popular route from Illinois to Sydney.

  • Can I find deals for flights from Illinois to Sydney that include hotel bookings?

    Yes. In addition to deals on Illinois to Sydney flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Illinois to Sydney?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Illinois to Sydney.

  • Can I find deals for business class flights from Illinois to Sydney?

    Yes. Cheapflights offers flight deals from Illinois to Sydney by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Illinois to Sydney?

    Currently, February is the cheapest month in which you can book a flight from Illinois to Sydney (average of $1,051). Flying from Illinois to Sydney in December is currently the most expensive (average of $1,643). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Illinois?

Book flights to Illinois if you plan to visit one of these locations
Wollongong
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Coogee
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Top 8 airlines flying from Illinois to Sydney

Discover the top 8 airlines that operate flights from Illinois to Sydney. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
ANACheapest$679Average$781FlexibilityNo cancel feeOn-time80%
Qantas AirwaysCheapest$824Average$1,271FlexibilityNo cancel feeOn-time74%
American AirlinesCheapest$831Average$891FlexibilityNo cancel feeOn-time71%
DeltaCheapest$851Average$978FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$916Average$1,594FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$957Average$1,304FlexibilityNo cancel feeOn-time67%
Cathay PacificCheapest$1,138Average$1,317FlexibilityNo cancel feeOn-time72%
Air New ZealandCheapest$1,197Average$1,318FlexibilityNo cancel feeOn-time78%
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