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Cheap flights from Illinois to Sydney from $735

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 4/2. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SYD
24 Dec — 31 Dec1
1 adult

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 19 December 2024.

Round-trip from

$1,375

One-way from

$735
American Airlines
  • American Airlines
  • 17/2-22/2
  • 2 total stops
  • 41h 45m total
  • Illinois to Sydney
Search Deals
American Airlines
  • American Airlines
  • 4/2
  • 2 total stops
  • 22h 25m total
  • Illinois to Sydney
Search Deals

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 19 December 2024.

Fri 27/1208:38ORD - SYD
1 stop28h 32mAmerican Airlines
Fri 10/117:25SYD - ORD
1 stop28h 40mAmerican Airlines
Deal found 18/12$1,375
Sun 22/1220:25ORD - SYD
1 stop43h 35mQantas Airways
Wed 22/111:15SYD - ORD
1 stop21h 44mQantas Airways
Deal found 18/12$1,573
Mon 23/1215:50STL - SYD
2 stops48h 45mAir Canada
Mon 30/1211:20SYD - STL
2 stops44h 46mAir Canada
Deal found 18/12$2,558
Sun 22/1220:25ORD - SYD
1 stop43h 35mMultiple Airlines
Wed 22/111:20SYD - ORD
3 stops49h 35mMultiple Airlines
Deal found 18/12$2,626
Fri 27/1220:25ORD - SYD
2 stops44h 10mAir Canada
Thu 16/116:00SYD - ORD
2 stops35h 54mAir Canada
Deal found 18/12$2,675
Thu 26/1212:45ORD - SYD
1 stop27h 30mUnited Airlines
Sun 12/116:15SYD - ORD
1 stop24h 04mUnited Airlines
Deal found 18/12$2,788
Mon 30/1209:30MDW - SYD
2 stops30h 05mDelta
Thu 16/111:05SYD - MDW
2 stops28h 15mDelta
Deal found 18/12$2,808
Mon 30/1208:30STL - SYD
1 stop29h 30mUnited Airlines
Sun 12/112:10SYD - STL
1 stop23h 49mUnited Airlines
Deal found 18/12$3,266
Tue 31/1206:04STL - SYD
2 stops31h 46mDelta
Thu 9/111:05SYD - STL
2 stops39h 18mDelta
Deal found 18/12$3,367
Mon 23/1206:30STL - SYD
1 stop33h 30mQantas Airways
Mon 30/1211:15SYD - STL
1 stop29h 12mQantas Airways
Deal found 18/12$4,126
Tue 31/1211:36STL - SYD
2 stops31h 54mMultiple Airlines
Sat 11/114:30SYD - STL
2 stops25h 26mMultiple Airlines
Deal found 18/12$4,229
Sun 29/1213:55ORD - SYD
2 stops23h 55mDelta
Fri 24/111:05SYD - ORD
2 stops23h 20mDelta
Deal found 18/12$4,299

Find flights from Illinois to Sydney within your budget

Customise 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 647,157 searches. Data last updated 19 December 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Mon 17/2

15:19-06:35

1 stop22h 16m

Sydney Kingsford Smith

Sat 22/2

11:50-14:19

1 stop19h 29m

$1,375

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Fri 17/1

17:40-09:00

1 stop22h 20m

Sydney Kingsford Smith

Fri 31/1

11:15-19:31

1 stop25h 16m

$1,386

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Fri 17/1

17:40-09:00

1 stop22h 20m

Sydney Kingsford Smith

Fri 24/1

11:50-15:26

1 stop20h 36m

$1,399

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Sat 1/2

17:40-12:25

2 stops25h 45m

Sydney Kingsford Smith

Sat 8/2

20:35-09:26

2 stops29h 51m

$1,521

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Sat 10/5

07:15-19:15

2 stops45h 00m

Sydney Kingsford Smith

Sat 17/5

20:55-04:59

2 stops47h 04m

$1,573

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Tue 11/2

16:55-12:30

2 stops26h 35m

Sydney Kingsford Smith

Tue 24/6

13:15-20:23

2 stops22h 08m

$1,894

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Sat 1/2

15:50-09:35

2 stops48h 45m

Sydney Kingsford Smith

Sun 25/5

09:20-15:16

2 stops44h 56m

$1,959

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Sun 2/2

11:35-09:35

2 stops29h 00m

Sydney Kingsford Smith

Tue 25/2

11:20-19:55

2 stops25h 35m

$1,970

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Tue 18/2

19:00-19:45

2 stops31h 45m

Sydney Kingsford Smith

Fri 28/2

21:40-17:00

2 stops36h 20m

$2,072

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Sat 18/1

17:12-21:50

2 stops35h 38m

Sydney Kingsford Smith

Fri 24/1

17:25-23:59

2 stops23h 34m

$2,145

Flights are sorted by cheapest return flights first.

Deals found on 18/12

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 return 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, May is the cheapest month in which you can book a flight from Illinois to Sydney (average of $129). Flying from Illinois to Sydney in October is currently the most expensive (average of $171). 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 19 December 2024.

When flying from Illinois to Sydney, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 50.0 - 130.0 inches per month. March is typically the wettest month, when rainfall can reach 130.0 mm. September is typically the driest time to visit Sydney when rainfall is around 50.0 mm.

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 22.0 C. Travellers hoping to avoid the cold should look outside of July, when temperatures are typically at their lowest (around 11.0 C).

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 19 December 2024.
Peruse reviews from past customers who have flown with ANA, Delta and American Airlines from Illinois to Sydney to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Air Tahiti Nui
8.6
Very Good
65 reviews
Check prices

Crew

8.9

Overall

8.6

Comfort

8.0

Food

7.7

Boarding

8.5

Entertainment

7.2

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
8.6
Very Good
65 reviews
Air Tahiti Nui
8.6
Very Good
65 reviews
Check prices

Crew

8.9

Overall

8.6

Comfort

8.0

Food

7.7

Boarding

8.5

Entertainment

7.2

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
839 reviews
Air Tahiti Nui
8.6
Very Good
65 reviews
Check prices

Crew

8.9

Overall

8.6

Comfort

8.0

Food

7.7

Boarding

8.5

Entertainment

7.2

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
8.4
Very Good
1,021 reviews
Air Tahiti Nui
8.6
Very Good
65 reviews
Check prices

Crew

8.9

Overall

8.6

Comfort

8.0

Food

7.7

Boarding

8.5

Entertainment

7.2

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
191 reviews
Air Tahiti Nui
8.6
Very Good
65 reviews
Check prices

Crew

8.9

Overall

8.6

Comfort

8.0

Food

7.7

Boarding

8.5

Entertainment

7.2

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.

Delta
8.0
Very Good
8,604 reviews
Air Tahiti Nui
8.6
Very Good
65 reviews
Check prices

Crew

8.9

Overall

8.6

Comfort

8.0

Food

7.7

Boarding

8.5

Entertainment

7.2

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?

    Located just 7.5 km from the city centre, Sydney Kingsford Smith (SYD) is the airport most travelers will use when flying to Sydney from Illinois.

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

    One-way options have recently been found by users for as low as $735 on American Airlines. Other airlines that offer cheap prices include Fiji Airways from $953 and Qantas Airways from $1,054 one-way.

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

    When deciding which route to take from Illinois to Sydney, consider Chicago O'Hare Intl - Sydney Kingsford Smith, Chicago Midway - Sydney Kingsford Smith or Lambert-St Louis - Sydney Kingsford Smith, as they are the most popular.

  • 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 holiday 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, May is the cheapest month in which you can book a flight from Illinois to Sydney (average of $129). Flying from Illinois to Sydney in October is currently the most expensive (average of $171). 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

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Top 3 airlines flying from Illinois to Sydney

Discover the top 3 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 647,157 searches. Data last updated 19 December 2024.
AirlineCheapestAverageFlexibilityOn-time
Qantas AirwaysCheapest$1,447Average$1,543FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights
Air CanadaCheapest$1,533Average$1,874FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapest$1,790Average$2,290FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Illinois to Sydney?

When you search for this flight from Illinois to Sydney, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Illinois to Sydney?

Millions of users choose and trust Cheapflights to book the best flight deals from Illinois to Sydney for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Illinois to Sydney with no change fees?

Yes! Cheapflights helps users easily find flights from Illinois to Sydney with no change fees.

Can Cheapflights notify me if prices for flights from Illinois to Sydney become cheaper?

Of course! You can now track prices for flights from Illinois to Sydney and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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