HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
South Pacific

$530+ 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 12/4. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SYD
Dec 5 — Dec 121
Fri 12/5
Fri 12/12
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Illinois to South Pacific with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap 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 November 5, 2025.

Most accurate provider

Justfly.com
3 stars

Most trusted provider

Justfly.com
3 stars

Round-trip from

$928
(CrystalTravel)

One-way from

$530
(Kiwi.com)

Popular in

December

Cheapest in

August

Average price

$995
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. 17% potential increase in price ($207 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($37 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

Find 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 November 5, 2025.

This CrystalTravel deal was found by Cheapflights users on 11/4. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/511:46 amORD - AKL
1 stop26h 24mQantas Airways
Thu 11/271:20 pmAKL - ORD
1 stop19h 18mQantas Airways
Deal found 11/4$930
This lol.travel deal was found by Cheapflights users on 11/2. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/243:13 pmORD - AKL
1 stop22h 57mQantas Airways
Mon 12/83:50 pmAKL - ORD
1 stop19h 22mQantas Airways
Deal found 11/2$935
This CrystalTravel deal was found by Cheapflights users on 11/3. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/41:49 pmORD - AKL
2 stops33h 26mQantas Airways
Tue 11/111:20 pmAKL - ORD
1 stop21h 04mQantas Airways
Deal found 11/3$942
This American Airlines deal was found by Cheapflights users on 11/3. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/243:06 pmORD - AKL
2 stops23h 04mAmerican Airlines
Mon 12/83:50 pmAKL - ORD
2 stops20h 31mAmerican Airlines
Deal found 11/3$948
This Ovago deal was found by Cheapflights users on 11/5. 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.
Mon 12/81:20 pmSTL - AKL
1 stop24h 50mQantas Airways
Mon 12/221:20 pmAKL - STL
1 stop22h 50mQantas Airways
Deal found 11/5$959
This FlightHub deal was found by Cheapflights users on 11/5. 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 11/195:58 pmSTL - AKL
1 stop20h 12mQantas Airways
Wed 12/101:20 pmAKL - STL
1 stop22h 14mQantas Airways
Deal found 11/5$960
This American Airlines deal was found by Cheapflights users on 11/4. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/279:15 amORD - AKL
1 stop28h 55mAmerican Airlines
Thu 12/41:20 pmAKL - ORD
1 stop27h 59mAmerican Airlines
Deal found 11/4$960
This Priceline deal was found by Cheapflights users on 11/3. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/33:11 pmORD - AKL
1 stop23h 44mQantas Airways
Wed 12/103:50 pmAKL - ORD
1 stop19h 12mQantas Airways
Deal found 11/3$961
This United Airlines deal was found by Cheapflights users on 11/5. 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 11/198:20 amSTL - AKL
2 stops29h 50mUnited Airlines
Wed 12/103:50 pmAKL - STL
1 stop19h 37mUnited Airlines
Deal found 11/5$965
This CrystalTravel deal was found by Cheapflights users on 11/4. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1911:46 amORD - AKL
1 stop26h 24mQantas Airways
Sat 12/61:20 pmAKL - ORD
1 stop19h 14mQantas Airways
Deal found 11/4$976
This oojo deal was found by Cheapflights users on 11/5. 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.
Tue 11/253:40 pmORD - AKL
1 stop22h 30mQantas Airways
Tue 12/27:35 amAKL - ORD
2 stops32h 41mQantas Airways
Deal found 11/5$995
This oojo deal was found by Cheapflights users on 11/3. 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.
Wed 11/51:23 pmORD - AKL
1 stop24h 47mQantas Airways
Thu 11/136:10 amAKL - ORD
2 stops29h 42mQantas Airways
Deal found 11/3$996

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 November 5, 2025.
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

Wed 11/19

5:58 pm-9:10 am

1 stop20h 12m

Auckland Intl

Wed 12/10

1:20 pm-4:34 pm

1 stop22h 14m

$960

St. LouisAuckland

STL - AKL

STLAKL

Lambert-St Louis

Tue 3/3

6:00 am-9:10 am

2 stops32h 10m

Auckland Intl

Wed 3/18

2:50 pm-10:49 pm

2 stops25h 59m

$965

St. LouisAuckland

STL - AKL

STLAKL

Lambert-St Louis

Wed 11/19

8:20 am-9:10 am

2 stops29h 50m

Auckland Intl

Wed 12/10

3:50 pm-4:27 pm

1 stop19h 37m

$965

St. LouisAuckland

STL - AKL

STLAKL

Lambert-St Louis

Tue 3/3

5:55 pm-9:10 am

1 stop20h 15m

Auckland Intl

Wed 3/18

6:50 am-11:09 pm

2 stops34h 19m

$985

St. LouisAuckland

STL - AKL

STLAKL

Lambert-St Louis

Sun 2/8

2:45 pm-9:10 am

2 stops23h 25m

Auckland Intl

Thu 3/5

3:50 pm-4:44 pm

1 stop19h 54m

$1,010

St. LouisAuckland

STL - AKL

STLAKL

Lambert-St Louis

Mon 12/8

1:35 pm-9:10 am

2 stops24h 35m

Auckland Intl

Fri 12/19

3:50 pm-10:30 pm

1 stop25h 40m

$1,011

St. LouisAuckland

STL - AKL

STLAKL

Lambert-St Louis

Wed 2/11

5:04 pm-9:10 am

1 stop21h 06m

Auckland Intl

Mon 3/2

3:50 pm-11:48 pm

1 stop26h 58m

$1,012

ChicagoAuckland

ORD - AKL

ORDAKL

Chicago O'Hare Intl

Wed 2/4

5:10 pm-9:10 am

1 stop21h 00m

Auckland Intl

Mon 2/16

1:20 pm-1:01 pm

1 stop18h 41m

$1,012

ChicagoAuckland

ORD - AKL

ORDAKL

Chicago O'Hare Intl

Thu 2/5

3:23 pm-9:10 am

1 stop22h 47m

Auckland Intl

Wed 2/18

1:20 pm-3:09 pm

1 stop20h 49m

$1,012

St. LouisAuckland

STL - AKL

STLAKL

Lambert-St Louis

Mon 1/19

11:20 am-9:10 am

2 stops26h 50m

Auckland Intl

Fri 1/30

3:50 pm-4:43 pm

2 stops19h 53m

$1,015

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/4

Showing 1-10 of 60 results
1
2
3
...
6

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 February is currently the most expensive (average of $680). 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 SP?

Find hourly flight availability from Illinois to South Pacific. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 5, 2025.

It’s typically best to fly out from Illinois to South Pacific at noon. Doing so could potentially save you 26% on the flight price compared to flying in the morning, which is usually more expensive.

What is the cheapest day to fly from Illinois to South Pacific?

Use this chart to determine the cheapest time to fly round-trip from Illinois to South Pacific. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Illinois to South Pacific flight should consider departing on Thursday afternoons when fares are most often at their lowest. Saturday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

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 20h 12m. Fly via Qantas Airways, United Airlines, or Air Canada 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?

    $656 is the cheapest one-way deal found within the past few days, from Fiji Airways. You may also be able to find cheap deals on Air Tahiti Nui and Qantas Airways, with prices starting from $719 and $829, 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 February is currently the most expensive (average of $680). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Illinois to South Pacific

See prices for flight routes from nearby airports that may be better suited for you.
Newark to Fort Lauderdale flights
John F Kennedy Intl to Fort Lauderdale flights
Los Angeles to John F Kennedy Intl flights
Newark to Miami flights
John F Kennedy Intl to Cancún flights
John F Kennedy Intl to Miami flights
John F Kennedy Intl to Los Angeles flights
LaGuardia to Fort Lauderdale flights
Los Angeles to Newark flights
Dallas/Fort Worth to John F Kennedy Intl flights
Los Angeles to Haneda flights
Newark to Cancún flights
LaGuardia to Miami flights
Dallas/Fort Worth to LaGuardia flights
John F Kennedy Intl to Orlando flights
John F Kennedy Intl to Dallas/Fort Worth flights
O'Hare Intl to John F Kennedy Intl flights
Newark to Los Angeles flights
John F Kennedy Intl to Las Vegas flights
Dallas/Fort Worth to Newark flights
Newark to Dallas/Fort Worth flights
San Francisco to John F Kennedy Intl flights
John F Kennedy Intl to O'Hare Intl flights
Newark to Orlando flights
Atlanta to John F Kennedy Intl flights
San Francisco to Los Angeles flights
John F Kennedy Intl to San Francisco flights
Newark to Las Vegas flights
Seattle to Los Angeles flights
Dallas/Fort Worth to Las Vegas flights
John F Kennedy Intl to Luis Munoz Marin Intl flights
John F Kennedy Intl to Heathrow flights
O'Hare Intl to Cancún flights
LaGuardia to Dallas/Fort Worth flights
Fort Lauderdale to Newark flights
John F Kennedy Intl to Mexico City flights
Newark to Heathrow flights
Los Angeles to Dallas/Fort Worth flights
Newark to Mexico City flights
San Francisco to Newark flights
Dulles Intl to Dallas/Fort Worth flights
LaGuardia to Hobby flights
Los Angeles to LaGuardia flights
John F Kennedy Intl to West Palm Beach flights
Seattle to Las Vegas flights
Newark to West Palm Beach flights
Newark to Hobby flights
Los Angeles to Honolulu flights
John F Kennedy Intl to Haneda flights
John F Kennedy Intl to Hobby flights

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 November 5, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$307Average$1,550FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$663Average$1,237FlexibilityNo cancel feeOn-time67%
Qantas AirwaysCheapest$673Average$1,147FlexibilityNo cancel feeOn-time74%
ANACheapest$679Average$1,193FlexibilityNo cancel feeOn-time80%
American AirlinesCheapest$679Average$1,395FlexibilityNo cancel feeOn-time71%
Fiji AirwaysCheapest$712Average$1,391FlexibilityNo cancel feeOn-time74%
DeltaCheapest$846Average$1,018FlexibilityNo cancel feeOn-timeN/A
Air Tahiti NuiCheapest$1,051Average$1,414FlexibilityNo cancel feeOn-time73%
Qatar AirwaysCheapest$1,229Average$1,331FlexibilityNo cancel feeOn-time68%
Air New ZealandCheapest$1,264Average$1,579FlexibilityNo cancel feeOn-time78%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.