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South Pacific

$488+ Cheap flights from Illinois to South Pacific

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 5/11. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SYD
Mar 6 — Mar 131
Fri 3/6
Fri 3/13
1 adult, Economy
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Cheap flight deals from Illinois to South Pacific

Cheapest flights from Illinois to South Pacific
Explore the most affordable flight options available from Illinois to South Pacific. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 4, 2026.

This Air Canada deal was found by Cheapflights users on 2/4. 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.
Wed 3/113:35 pm
ORD
-
AKL
1 stop24h 25m
Air Canada
Tue 3/171:00 pm
AKL
-
ORD
1 stop19h 41m
Air Canada
Deal found 2/4$759
This FlightHub deal was found by Cheapflights users on 1/31. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/45:04 pm
STL
-
AKL
1 stop21h 06m
Qantas Airways
Fri 2/61:20 pm
AKL
-
STL
1 stop21h 54m
Qantas Airways
Deal found 1/31$780
This United Airlines deal was found by Cheapflights users on 2/3. 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.
Sat 2/75:00 pm
STL
-
AKL
1 stop21h 10m
United Airlines
Fri 2/203:50 pm
AKL
-
STL
1 stop19h 54m
United Airlines
Deal found 2/3$782
This Qantas Airways deal was found by Cheapflights users on 2/4. 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 Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/216:18 pm
STL
-
AKL
1 stop19h 52m
Qantas Airways
Sat 2/281:15 pm
AKL
-
STL
2 stops29h 44m
Qantas Airways
Deal found 2/4$791
This Qantas Airways deal was found by Cheapflights users on 2/3. 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 Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/34:13 pm
STL
-
AKL
1 stop21h 57m
Qantas Airways
Tue 3/174:35 pm
AKL
-
STL
2 stops25h 23m
Qantas Airways
Deal found 2/3$792
This Delta deal was found by Cheapflights users on 2/3. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/36:00 am
STL
-
AKL
2 stops31h 35m
Delta
Wed 3/181:35 pm
AKL
-
STL
2 stops27h 50m
Delta
Deal found 2/3$796
This Air Canada deal was found by Cheapflights users on 2/4. 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.
Sat 2/73:35 pm
ORD
-
AKL
1 stop24h 25m
Air Canada
Mon 2/162:00 pm
AKL
-
ORD
1 stop19h 41m
Air Canada
Deal found 2/4$796
This American Airlines deal was found by Cheapflights users on 2/1. 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 2/57:04 am
STL
-
AKL
1 stop31h 51m
American Airlines
Wed 2/111:20 pm
AKL
-
STL
1 stop25h 09m
American Airlines
Deal found 2/1$802
This United Airlines deal was found by Cheapflights users on 2/3. 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.
Thu 3/56:51 am
STL
-
AKL
1 stop31h 19m
United Airlines
Thu 3/122:50 pm
AKL
-
STL
2 stops20h 06m
United Airlines
Deal found 2/3$806
This Air Canada deal was found by Cheapflights users on 2/4. 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.
Wed 2/2512:50 pm
ORD
-
AKL
2 stops27h 10m
Air Canada
Fri 3/131:00 pm
AKL
-
ORD
2 stops22h 48m
Air Canada
Deal found 2/4$807
This oojo deal was found by Cheapflights users on 2/3. 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.
Sat 2/284:13 pm
STL
-
AKL
1 stop21h 57m
Qantas Airways
Sat 3/141:15 pm
AKL
-
STL
2 stops28h 43m
Qantas Airways
Deal found 2/3$808
This FlightHub deal was found by Cheapflights users on 2/1. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/57:04 am
STL
-
AKL
1 stop31h 51m
Qantas Airways
Sat 2/73:50 pm
AKL
-
STL
1 stop27h 09m
Qantas Airways
Deal found 2/1$813

Find flight deals from Illinois to South Pacific

Keep the following information in mind while searching for Illinois to South Pacific flight deals. Data was last updated February 4, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$759
(Air Canada)

One-way from

$496
(Kiwi.com)

Popular in

December

Cheapest in

June

Average price

$979
Provider with most accurate pricing for Chicago (CHI)-Sydney Kingsford Smith flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago (CHI)-Sydney Kingsford Smith flights.
Search Deals
From Illinois to South Pacific
Search Deals
One-way flight from Illinois to South Pacific
Search Deals
Highest demand for flights based on searches. 18% potential increase in price ($229 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($47 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois to South Pacific 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 February 4, 2026.
Use the filters below to find and compare flights from Illinois to South Pacific that are best for you.

Fly from

Illinois

Fly to

South Pacific

Route

Depart

Return

Price

St. LouisAuckland

STL - AKL

STLAKL

Lambert-St Louis

Sat 2/21

6:18 pm-9:10 am

1 stop19h 52m

Auckland Intl

Sat 2/28

1:15 pm-11:59 pm

2 stops29h 44m

$791

St. LouisAuckland

STL - AKL

STLAKL

Lambert-St Louis

Tue 3/3

5:25 pm-9:10 am

1 stop20h 45m

Auckland Intl

Tue 3/17

2:50 pm-10:25 pm

1 stop25h 35m

$792

St. LouisAuckland

STL - AKL

STLAKL

Lambert-St Louis

Tue 3/3

6:18 pm-9:10 am

1 stop19h 52m

Auckland Intl

Tue 3/17

4:35 pm-11:58 pm

2 stops25h 23m

$792

St. LouisAuckland

STL - AKL

STLAKL

Lambert-St Louis

Tue 3/3

4:13 pm-9:10 am

1 stop21h 57m

Auckland Intl

Wed 3/18

1:15 pm-11:58 pm

2 stops28h 43m

$792

St. LouisAuckland

STL - AKL

STLAKL

Lambert-St Louis

Tue 3/3

10:13 am-8:35 am

2 stops27h 22m

Auckland Intl

Tue 3/17

1:35 pm-12:21 am

2 stops28h 46m

$796

St. LouisAuckland

STL - AKL

STLAKL

Lambert-St Louis

Sat 4/11

6:29 am-6:50 am

2 stops31h 21m

Auckland Intl

Sat 4/18

1:00 pm-4:50 pm

2 stops20h 50m

$796

ChicagoAuckland

ORD - AKL

ORDAKL

Chicago O'Hare Intl

Sat 2/21

12:50 pm-11:00 am

2 stops27h 10m

Auckland Intl

Fri 3/6

2:00 pm-8:10 pm

2 stops25h 10m

$841

ChicagoAuckland

ORD - AKL

ORDAKL

Chicago O'Hare Intl

Mon 2/9

3:23 pm-9:10 am

1 stop22h 47m

Auckland Intl

Wed 2/25

3:50 pm-4:37 pm

1 stop19h 47m

$849

ChicagoAuckland

ORD - AKL

ORDAKL

Chicago O'Hare Intl

Tue 2/24

6:00 pm-11:00 am

2 stops46h 00m

Auckland Intl

Tue 3/10

1:00 pm-2:41 pm

1 stop19h 41m

$857

ChicagoAuckland

ORD - AKL

ORDAKL

Chicago O'Hare Intl

Tue 2/24

4:20 pm-9:10 am

1 stop21h 50m

Auckland Intl

Tue 3/10

2:50 pm-8:15 pm

1 stop23h 25m

$861

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/2

Showing 1-10 of 60 results
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Best time to book a flight from Illinois to South Pacific

Have a flexible travel schedule? Discover the best time to fly to South Pacific 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.

Cheapflights Insights

Everything you need to know about your flight from Illinois to South Pacific

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

Currently, August is the cheapest month in which you can book a flight from Illinois to South Pacific (average of $198). Flying from Illinois to South Pacific in November is currently the most expensive (average of $812). 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.

Related info for your journey

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

  • How long is the flight from Illinois to South Pacific?

    There are many flights that can get you from Illinois to South Pacific in 19h 52m. Fly via Qantas Airways, Delta, or United Airlines to get the fastest option. The distance from Illinois to South Pacific is about 7970 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    $229 is the cheapest one-way deal found within the past few days, from United Airlines. You may also be able to find cheap deals on ANA and American Airlines, with prices starting from $304 and $395, respectively.

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

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

  • How can I find direct flights from Illinois to South Pacific?

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

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

    Yes. Cheapflights offers flight deals from Illinois to South Pacific 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 South Pacific?

    Currently, August is the cheapest month in which you can book a flight from Illinois to South Pacific (average of $198). Flying from Illinois to South Pacific in November is currently the most expensive (average of $812). 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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Alternative routes for Illinois to South Pacific

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Top 10 airlines flying from Illinois to South Pacific

Discover the top 10 airlines that operate flights from Illinois to South Pacific. 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 February 4, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$307Average$1,563FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$428Average$1,185FlexibilityNo cancel feeOn-time67%
Qantas AirwaysCheapest$675Average$1,299FlexibilityNo cancel feeOn-time74%
ANACheapest$703Average$1,237FlexibilityNo cancel feeOn-time80%
Fiji AirwaysCheapest$712Average$1,322FlexibilityNo cancel feeOn-time74%
American AirlinesCheapest$791Average$1,241FlexibilityNo cancel feeOn-time71%
DeltaCheapest$935Average$1,034FlexibilityNo cancel feeOn-timeN/A
Air Tahiti NuiCheapest$1,046Average$1,378FlexibilityNo cancel feeOn-time73%
Air New ZealandCheapest$1,062Average$1,551FlexibilityNo cancel feeOn-time78%
Qatar AirwaysCheapest$1,229Average$2,092FlexibilityNo cancel feeOn-time68%

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