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South Pacific

$363+ 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 2/7. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SYD
Feb 5 — Feb 121
Thu 2/5
Thu 2/12
1 adult, Economy
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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 January 6, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$792
(American Airlines)

One-way from

$363
(Kiwi.com)

Popular in

December

Cheapest in

March

Average price

$1,365
Provider with most accurate pricing for Chicago (CHI)-Sydney Kingsford Smith flight deals.
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Provider most trusted by Cheapflights users for Chicago (CHI)-Sydney Kingsford Smith flights.
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From Illinois to South Pacific
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One-way flight from Illinois to South Pacific
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Highest demand for flights based on searches. 19% potential increase in price ($246 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($49 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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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 January 6, 2026.

This American Airlines deal was found by Cheapflights users on 1/5. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/1511:55 amSTL - AKL
1 stop26h 15mAmerican Airlines
Thu 1/293:50 pmAKL - STL
1 stop27h 09mAmerican Airlines
Deal found 1/5$792
This American Airlines deal was found by Cheapflights users on 1/6. 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.
Wed 1/216:55 pmORD - AKL
1 stop19h 15mAmerican Airlines
Thu 1/293:50 pmAKL - ORD
1 stop19h 59mAmerican Airlines
Deal found 1/6$792
This American Airlines deal was found by Cheapflights users on 1/6. 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.
Tue 3/32:31 pmSTL - AKL
2 stops24h 24mAmerican Airlines
Wed 3/184:55 pmAKL - STL
2 stops22h 31mAmerican Airlines
Deal found 1/6$812
This oojo deal was found by Cheapflights users on 1/4. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/116:56 pmORD - NAN
1 stop17h 04mFiji Airways
Sat 4/259:15 pmNAN - ORD
1 stop17h 04mFiji Airways
Deal found 1/4$816
This CrystalTravel deal was found by Cheapflights users on 1/4. 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.
Thu 1/292:15 pmORD - AKL
1 stop24h 40mQantas Airways
Thu 2/191:20 pmAKL - ORD
1 stop18h 44mQantas Airways
Deal found 1/4$837
This CrystalTravel deal was found by Cheapflights users on 1/5. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/43:10 pmORD - AKL
1 stop23h 45mQantas Airways
Wed 2/111:20 pmAKL - ORD
1 stop21h 17mQantas Airways
Deal found 1/5$839
This CrystalTravel deal was found by Cheapflights users on 1/5. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/134:45 pmORD - AKL
1 stop21h 40mQantas Airways
Sun 11/291:20 pmAKL - ORD
1 stop19h 18mQantas Airways
Deal found 1/5$840
This CrystalTravel deal was found by Cheapflights users on 1/4. 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.
Tue 1/276:40 pmORD - AKL
1 stop20h 15mQantas Airways
Mon 2/91:20 pmAKL - ORD
1 stop22h 52mQantas Airways
Deal found 1/4$846
This CrystalTravel deal was found by Cheapflights users on 1/4. 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.
Sat 2/288:21 pmORD - AKL
1 stop18h 34mQantas Airways
Sun 3/84:05 pmAKL - ORD
2 stops31h 32mQantas Airways
Deal found 1/4$849
This American Airlines deal was found by Cheapflights users on 1/5. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/156:40 pmORD - AKL
1 stop20h 15mAmerican Airlines
Wed 1/283:50 pmAKL - ORD
1 stop18h 07mAmerican Airlines
Deal found 1/5$851
This American Airlines deal was found by Cheapflights users on 1/4. 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.
Wed 2/186:49 pmORD - AKL
1 stop19h 21mAmerican Airlines
Wed 2/251:20 pmAKL - ORD
1 stop19h 37mAmerican Airlines
Deal found 1/4$857
This KAYAK deal was found by Cheapflights users on 1/4. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/282:15 pmORD - AKL
1 stop24h 40mQantas Airways
Thu 2/191:20 pmAKL - ORD
1 stop20h 50mQantas Airways
Deal found 1/4$859

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 January 6, 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

Mon 2/2

5:04 pm-9:55 am

2 stops21h 51m

Auckland Intl

Mon 2/9

3:50 pm-7:29 pm

2 stops22h 39m

$796

ChicagoNadi

ORD - NAN

ORDNAN

Chicago O'Hare Intl

Sat 4/11

6:56 pm-5:00 am

1 stop17h 04m

Nadi

Sat 4/25

9:15 pm-9:19 pm

1 stop17h 04m

$816

St. LouisAuckland

STL - AKL

STLAKL

Lambert-St Louis

Sat 2/21

4:13 pm-9:10 am

1 stop21h 57m

Auckland Intl

Sat 2/28

1:15 pm-11:59 pm

2 stops29h 44m

$862

St. LouisAuckland

STL - AKL

STLAKL

Lambert-St Louis

Wed 2/25

4:13 pm-9:10 am

1 stop21h 57m

Auckland Intl

Mon 3/9

1:15 pm-11:59 pm

2 stops28h 44m

$862

St. LouisAuckland

STL - AKL

STLAKL

Lambert-St Louis

Tue 3/3

4:13 pm-9:10 am

1 stop21h 57m

Auckland Intl

Tue 3/17

4:35 pm-11:59 pm

2 stops25h 24m

$862

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

4:35 pm-11:59 pm

2 stops25h 24m

$862

ChicagoAuckland

ORD - AKL

ORDAKL

Chicago O'Hare Intl

Fri 3/20

4:49 pm-8:10 am

1 stop21h 21m

Auckland Intl

Fri 4/10

6:00 am-2:16 pm

2 stops25h 16m

$862

ChicagoAuckland

ORD - AKL

ORDAKL

Chicago O'Hare Intl

Sun 2/1

3:10 pm-2:40 pm

2 stops28h 30m

Auckland Intl

Sun 2/8

1:15 pm-11:59 pm

2 stops29h 44m

$862

St. LouisAuckland

STL - AKL

STLAKL

Lambert-St Louis

Tue 3/3

6:00 am-8:35 am

2 stops31h 35m

Auckland Intl

Tue 3/17

1:35 pm-12:21 am

2 stops28h 46m

$866

St. LouisAuckland

STL - AKL

STLAKL

Lambert-St Louis

Sun 3/8

6:04 am-7:35 am

2 stops31h 31m

Auckland Intl

Fri 3/13

1:35 pm-11:58 pm

2 stops28h 23m

$866

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/6

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 $775). 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 17h 04m. Fly via American Airlines, Fiji Airways, or Qantas Airways to get the fastest option. The distance from Illinois to South Pacific is about 7260 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 Qantas Airways, with prices starting from $304 and $344, 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 $775). 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 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 January 6, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$307Average$1,530FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$663Average$1,191FlexibilityNo cancel feeOn-time67%
Qantas AirwaysCheapest$675Average$1,162FlexibilityNo cancel feeOn-time74%
ANACheapest$679Average$1,213FlexibilityNo cancel feeOn-time80%
Fiji AirwaysCheapest$712Average$1,321FlexibilityNo cancel feeOn-time74%
American AirlinesCheapest$796Average$1,299FlexibilityNo cancel feeOn-time71%
DeltaCheapest$935Average$1,034FlexibilityNo cancel feeOn-timeN/A
Air Tahiti NuiCheapest$1,046Average$1,491FlexibilityNo cancel feeOn-time73%
Air New ZealandCheapest$1,062Average$1,565FlexibilityNo cancel feeOn-time78%
Qatar AirwaysCheapest$1,229Average$2,092FlexibilityNo cancel feeOn-time68%

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