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Cheap flights from Sydney to Illinois from $723

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 17/3. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — ORD
22 Jan — 29 Jan1
1 adult

Cheap flight deals from Sydney to Illinois

Discover tips and strategies to find the most affordable flight options for your journey from Sydney (SYD) to Illinois (USIL). 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 17 January 2025.

Round-trip from

$1,146

One-way from

$723
Qantas Airways
  • Qantas Airways
  • 30/5-12/6
  • 2 total stops
  • 84h 05m total
  • Sydney to Illinois
Search Deals
Qantas Airways
  • Qantas Airways
  • 17/3
  • 1 total stop
  • 22h 34m total
  • Sydney to Illinois
Search Deals

Find flight deals from Sydney to Illinois

Cheapest flights from Sydney to Illinois
Explore the most affordable flight options available from Sydney to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 17 January 2025.

Thu 23/111:15SYD - ORD
1 stop21h 44mQantas Airways
Thu 6/215:20ORD - SYD
1 stop24h 40mQantas Airways
Deal found 16/1$1,143
Wed 5/206:20SYD - ORD
2 stops25h 05mMultiple Airlines
Wed 26/220:25ORD - SYD
1 stop43h 35mMultiple Airlines
Deal found 16/1$1,279
Wed 12/211:20SYD - ORD
3 stops37h 37mAir Canada
Sun 23/207:20ORD - SYD
3 stops33h 15mAir Canada
Deal found 17/1$1,733
Thu 15/511:50SYD - ORD
2 stops26h 06mAir New Zealand
Tue 20/516:20ORD - SYD
2 stops25h 25mAir New Zealand
Deal found 15/1$1,772
Thu 15/511:50SYD - ORD
1 stop35h 50mANA
Tue 20/519:46ORD - SYD
2 stops32h 29mANA
Deal found 15/1$1,789
Mon 10/211:15SYD - STL
1 stop28h 48mAmerican Airlines
Sun 16/215:43STL - SYD
2 stops24h 17mAmerican Airlines
Deal found 17/1$1,854
Mon 3/311:50SYD - STL
2 stops24h 59mUnited Airlines
Mon 10/316:30STL - SYD
2 stops24h 35mUnited Airlines
Deal found 16/1$1,855
Thu 13/211:20SYD - STL
2 stops44h 46mAir Canada
Thu 20/215:50STL - SYD
2 stops48h 45mAir Canada
Deal found 15/1$1,865
Mon 20/114:15SYD - MDW
2 stops25h 05mDelta
Mon 10/212:44MDW - SYD
2 stops26h 51mDelta
Deal found 17/1$1,910
Mon 20/111:05SYD - ORD
2 stops23h 20mDelta
Mon 10/212:15ORD - SYD
2 stops27h 20mDelta
Deal found 17/1$1,910
Thu 23/111:15SYD - ORD
2 stops22h 20mAmerican Airlines
Fri 31/117:35ORD - SYD
2 stops22h 25mAmerican Airlines
Deal found 16/1$1,921
Mon 12/509:25SYD - STL
2 stops27h 08mDelta
Sat 31/507:20STL - SYD
2 stops32h 15mDelta
Deal found 17/1$1,986

Find flights from Sydney to Illinois within your budget

Customise your flight search to find flights from Sydney to Illinois 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 17 January 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Fri 30/5

17:35-19:38

1 stop41h 03m

Chicago O'Hare Intl

Thu 12/6

20:33-06:35

1 stop43h 02m

$1,146

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Wed 5/2

06:20-14:25

2 stops25h 05m

Chicago O'Hare Intl

Wed 26/2

20:25-09:00

1 stop43h 35m

$1,279

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Wed 12/2

11:20-07:57

3 stops37h 37m

Chicago O'Hare Intl

Sun 23/2

07:20-09:35

3 stops33h 15m

$1,733

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Thu 15/5

11:50-22:56

2 stops26h 06m

Chicago O'Hare Intl

Tue 20/5

16:20-08:45

2 stops25h 25m

$1,772

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Thu 15/5

11:50-08:40

1 stop35h 50m

Chicago O'Hare Intl

Tue 20/5

19:46-19:15

2 stops32h 29m

$1,789

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 10/2

11:15-23:03

1 stop28h 48m

Lambert-St Louis

Sun 16/2

15:43-09:00

2 stops24h 17m

$1,854

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 3/3

11:50-19:49

2 stops24h 59m

Lambert-St Louis

Mon 10/3

16:30-09:05

2 stops24h 35m

$1,855

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Thu 13/2

11:20-15:06

2 stops44h 46m

Lambert-St Louis

Thu 20/2

15:50-09:35

2 stops48h 45m

$1,865

SydneyChicago

SYD - MDW

SYDMDW

Sydney Kingsford Smith

Mon 20/1

14:15-22:20

2 stops25h 05m

Chicago Midway

Mon 10/2

12:44-08:35

2 stops26h 51m

$1,910

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 12/5

09:25-21:33

2 stops27h 08m

Lambert-St Louis

Sat 31/5

07:20-06:35

2 stops32h 15m

$1,986

Flights are sorted by cheapest return flights first.

Deals found on 17/1

Showing 1-10 of 33 results
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Best time to book a flight from Sydney to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from Sydney 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 Sydney to Illinois

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

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

Find hourly flight availability from Sydney to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 17 January 2025.

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

Rainfall in Illinois by month

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

In terms of precipitation, rainfall in Illinois ranges from 43.0 - 125.0 inches per month. August is typically the wettest month, when rainfall can reach 125.0 mm. January is typically the driest time to visit Illinois when rainfall is around 43.0 mm.

Temperature in Illinois by month

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

If weather is an important factor for your trip to Illinois, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -5.0 C).

Reviews of airlines servicing Illinois

Get insights into the airlines that provide service to Illinois. 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 Illinois. Reviews last updated 17 January 2025.
To help decide which airline to fly from Sydney to Illinois, see what other customers have to say about Qantas Airways, Air Canada and Air Tahiti Nui. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Air Tahiti Nui
8.8
Very Good
62 reviews
Check prices

Entertainment

7.3

Comfort

8.1

Overall

8.8

Boarding

8.7

Crew

9.1

Food

7.8

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
Check prices

Entertainment

7.3

Comfort

8.1

Overall

8.8

Boarding

8.7

Crew

9.1

Food

7.8

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
1,034 reviews
Air Tahiti Nui
8.8
Very Good
62 reviews
Check prices

Entertainment

7.3

Comfort

8.1

Overall

8.8

Boarding

8.7

Crew

9.1

Food

7.8

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
847 reviews
Air Tahiti Nui
8.8
Very Good
62 reviews
Check prices

Entertainment

7.3

Comfort

8.1

Overall

8.8

Boarding

8.7

Crew

9.1

Food

7.8

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.

Japan Airlines
8.3
Very Good
1,448 reviews
Air Tahiti Nui
8.8
Very Good
62 reviews
Check prices

Entertainment

7.3

Comfort

8.1

Overall

8.8

Boarding

8.7

Crew

9.1

Food

7.8

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
1,327 reviews
Air Tahiti Nui
8.8
Very Good
62 reviews
Check prices

Entertainment

7.3

Comfort

8.1

Overall

8.8

Boarding

8.7

Crew

9.1

Food

7.8

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 Sydney to Illinois. 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 from for flights from Sydney to Illinois?

    If you book a flight to Illinois from Sydney, you will be flying from Kingsford Smith, which is the city’s only airport. Sydney Kingsford Smith (SYD) is located 7.5 km from the centre of Sydney.

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

    The cheapest airline one-way is Qantas Airways, with whom users have recently found tickets for as low as $723. However, be on the lookout for offers from United Airlines and Air Tahiti Nui, as they are both options that can get you from Sydney to Illinois for a low price.

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

    The most popular route from Sydney to Illinois is Sydney Kingsford Smith - Chicago O'Hare Intl. You may also consider Sydney Kingsford Smith - Chicago Midway or Sydney Kingsford Smith - Lambert-St Louis.

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

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

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

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

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

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

See more FAQs

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Alternative routes for Sydney to Illinois

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Top 9 airlines flying from Sydney to Illinois

Discover the top 9 airlines that operate flights from Sydney to Illinois. 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 17 January 2025.
AirlineCheapestAverageFlexibilityOn-time
Qantas AirwaysCheapest$1,125Average$1,907FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights
Air New ZealandCheapest$1,446Average$1,892FlexibilityNo cancel feeOn-time78%
Search Air New Zealand flights
American AirlinesCheapest$1,546Average$1,768FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Air CanadaCheapest$1,550Average$1,970FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapest$1,572Average$2,511FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
ANACheapest$1,577Average$2,130FlexibilityNo cancel feeOn-time80%
Search ANA flights
Virgin AustraliaCheapest$1,786Average$2,785FlexibilityNo cancel feeOn-time80%
Search Virgin Australia flights
DeltaCheapest$1,881Average$2,017FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Cathay PacificCheapest$1,930Average$2,298FlexibilityNo cancel feeOn-time72%
Search Cathay Pacific 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 Sydney to Illinois?

When you search for this flight from Sydney to Illinois, 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 Sydney to Illinois?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Sydney to Illinois.

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

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

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

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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