$571+ Cheap flights from Illinois to Australia
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/1. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SYD
Dec 5 — Dec 121
Round-trip
1 adult, Economy
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Find cheap flights from Illinois to Australia with Cheapflights
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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
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Cheapest flights from Illinois to AustraliaExplore the most affordable flight options available from Illinois to Australia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 5, 2026.
Explore the most affordable flight options available from Illinois to Australia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 5, 2026.
This Trip.com 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/48:30 am -
3 stops34h 55m
Tue 12/81:45 pm -
3 stops28h 09m
Deal found 11/2![Multiple Airlines logo]()
$1,122
This Trip.com 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/27:00 am -
2 stops33h 30m
Sat 12/56:45 am -
3 stops35h 09m
Deal found 11/3![Multiple Airlines logo]()
$1,185
This Trip.com 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/19:13 am -
3 stops34h 07m
Tue 12/81:45 pm -
3 stops32h 16m
Deal found 11/3![Multiple Airlines logo]()
$1,201
This Philippine 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 Philippine Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/109:04 pm -
2 stops41h 26m
Tue 11/179:20 am -
2 stops36h 42m
Deal found 11/3![Multiple Airlines logo]()
$1,308
This Philippine 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 Philippine Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/86:29 am -
2 stops34h 21m
Wed 11/1811:30 am -
2 stops34h 32m
Deal found 11/4![Multiple Airlines logo]()
$1,308
This Philippine Airlines deal was found by Cheapflights users on 10/31. 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 Philippine Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/48:00 am -
2 stops34h 15m
Wed 11/1111:35 am -
2 stops33h 27m
Deal found 10/31![Multiple Airlines logo]()
$1,309
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/86:30 am -
2 stops30h 55m
Mon 11/236:00 am -
3 stops41h 14m
Deal found 11/3![Multiple Airlines logo]()
$1,320
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/49:05 pm -
1 stop40h 20m
Fri 12/117:15 pm -
2 stops38h 00m
Deal found 11/4![Qantas Airways logo]()
$1,339
This oojo deal was found by Cheapflights users on 10/31. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/86:55 am -
2 stops32h 40m
Wed 11/1811:50 am -
2 stops24h 06m
Deal found 10/31![Air New Zealand logo]()
$1,341
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/116:30 am -
3 stops34h 50m
Sun 11/221:55 pm -
3 stops32h 15m
Deal found 11/3![Multiple Airlines logo]()
$1,349
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/147:55 pm -
2 stops56h 55m
Fri 11/2011:50 am -
2 stops24h 06m
Deal found 11/4![Air New Zealand logo]()
$1,369
This oojo deal was found by Cheapflights users on 10/31. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/79:57 pm -
2 stops54h 53m
Fri 11/1311:50 am -
2 stops25h 47m
Deal found 10/31![Air New Zealand logo]()
$1,373
Best flights from Illinois to AustraliaDiscover carefully curated flight deals from Illinois to Australia that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 5, 2026.
Discover carefully curated flight deals from Illinois to Australia that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 5, 2026.
This Qatar Airways 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/26:50 pm -
1 stop30h 40m
Fri 2/123:10 pm -
1 stop39h 20m
Deal found 11/4![Qatar Airways logo]()
$1,386
This Bravofly 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 Bravofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/318:20 pm -
2 stops46h 05m
Fri 2/1212:05 pm -
2 stops24h 21m
Deal found 11/3![Air New Zealand logo]()
$1,393
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/58:00 am -
3 stops29h 25m
Sun 2/1411:15 am -
2 stops29h 44m
Deal found 11/3![Alaska Airlines logo]()
$1,545
This Turkish Airlines 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/189:15 pm -
2 stops54h 10m
Sun 3/289:50 pm -
2 stops36h 20m
Deal found 11/2![Turkish Airlines logo]()
$1,553
This Air Canada 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/31:55 pm -
2 stops26h 50m
Thu 12/1010:45 am -
1 stop19h 52m
Deal found 11/4![Air Canada logo]()
$1,697
This Air New Zealand 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 Air New Zealand is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/14:40 pm -
2 stops34h 20m
Wed 5/127:50 pm -
2 stops41h 25m
Deal found 11/4![Multiple Airlines logo]()
$1,731
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/89:59 am -
2 stops29h 01m
Tue 12/1510:10 am -
1 stop20h 23m
Deal found 11/2![Delta logo]()
$1,738
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/410:25 am -
1 stop30h 05m
Tue 12/2212:45 pm -
1 stop25h 48m
Deal found 11/3![United Airlines logo]()
$1,747
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.
Fri 12/44:59 pm -
2 stops47h 41m
Mon 12/146:00 am -
2 stops28h 30m
Deal found 11/3![Qantas Airways logo]()
$1,813
This Cathay Pacific 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/132:10 pm -
1 stop27h 50m
Wed 12/912:00 pm -
1 stop41h 00m
Deal found 11/4![Cathay Pacific logo]()
$2,013
This Finnair deal was found by Cheapflights users on 10/31. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/229:30 pm -
3 stops55h 40m
Thu 4/291:40 pm -
2 stops43h 10m
Deal found 10/31![Finnair logo]()
$2,130
This KLM 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/54:25 pm -
3 stops56h 55m
Sat 2/610:30 am -
2 stops43h 45m
Deal found 11/3![KLM logo]()
$2,681
This Qatar Airways deal was found by Cheapflights users on 10/31. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/227:20 pm -
1 stop36h 35m
Thu 4/294:55 pm -
2 stops37h 10m
Deal found 10/31![Qatar Airways logo]()
$1,406
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/18:00 pm -
2 stops55h 00m
Sat 5/87:50 pm -
2 stops38h 56m
Deal found 11/4![Air New Zealand logo]()
$1,552
This Qatar Airways 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/286:50 pm -
1 stop36h 05m
Sat 2/139:55 pm -
1 stop32h 35m
Deal found 11/4![Qatar Airways logo]()
$1,426
This Turkish Airlines deal was found by Cheapflights users on 11/1. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/411:45 am -
2 stops38h 40m
Tue 12/159:35 pm -
2 stops53h 25m
Deal found 11/1![Turkish Airlines logo]()
$1,615
This Alaska Airlines 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/187:20 am -
3 stops31h 05m
Sun 3/289:25 pm -
2 stops31h 39m
Deal found 11/2![Alaska Airlines logo]()
$1,721
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/293:00 pm -
1 stop24h 00m
Sun 1/1010:10 am -
1 stop30h 17m
Deal found 11/3![Delta logo]()
$1,742
This United Airlines deal was found by Cheapflights users on 11/1. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/86:05 pm -
1 stop21h 25m
Fri 2/1211:20 am -
2 stops23h 29m
Deal found 11/1![United Airlines logo]()
$1,754
This Qatar Airways 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/307:20 pm -
1 stop34h 15m
Fri 5/71:20 pm -
2 stops38h 45m
Deal found 11/2![Qatar Airways logo]()
$1,453
This Turkish Airlines 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/138:15 pm -
2 stops31h 30m
Wed 1/2010:35 pm -
2 stops36h 45m
Deal found 11/2![Turkish Airlines logo]()
$1,626
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/48:40 pm -
2 stops42h 20m
Tue 12/2210:10 am -
1 stop20h 50m
Deal found 11/2![Delta logo]()
$1,747
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/194:35 pm -
1 stop24h 55m
Thu 11/2612:45 pm -
2 stops33h 35m
Deal found 11/4![United Airlines logo]()
$1,760
This Qatar Airways deal was found by Cheapflights users on 10/31. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/37:20 pm -
2 stops36h 05m
Mon 5/1010:45 pm -
2 stops38h 14m
Deal found 10/31![Qatar Airways logo]()
$1,471
This Qantas Airways deal was found by Cheapflights users on 11/1. 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 Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/14:50 pm -
2 stops32h 25m
Sat 1/91:10 pm -
2 stops22h 43m
Deal found 11/1![Multiple Airlines logo]()
$2,029
This KAYAK deal was found by Cheapflights users on 10/31. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/111:22 am -
2 stops27h 08m
Sat 1/96:30 pm -
2 stops33h 17m
Deal found 10/31![Qantas Airways logo]()
$2,054
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/247:59 am -
1 stop31h 01m
Sun 1/1010:10 am -
1 stop30h 17m
Deal found 11/3![Delta logo]()
$1,751
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/301:30 pm -
1 stop26h 00m
Mon 12/76:05 am -
2 stops26h 40m
Deal found 11/2![United Airlines logo]()
$1,772
This Qatar Airways 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1710:35 am -
2 stops36h 50m
Fri 12/117:50 pm -
2 stops59h 10m
Deal found 11/4![Qatar Airways logo]()
$1,575
This Delta deal was found by Cheapflights users on 10/31. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/231:57 pm -
2 stops25h 03m
Sat 1/3010:10 am -
2 stops25h 37m
Deal found 10/31![Delta logo]()
$1,756
Last-minute flights from Illinois to AustraliaDiscover last-minute flight deals from Illinois to Australia. Data last updated November 5, 2026 and is based on user searches.
Discover last-minute flight deals from Illinois to Australia. Data last updated November 5, 2026 and is based on user searches.
This Philippine Airlines deal was found by Cheapflights users on 10/31. 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 Philippine Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/48:00 am -
2 stops34h 15m
Wed 11/1111:35 am -
2 stops33h 27m
Deal found 10/31![Multiple Airlines logo]()
$1,309
This oojo deal was found by Cheapflights users on 10/31. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/79:57 pm -
2 stops54h 53m
Fri 11/1311:50 am -
2 stops25h 47m
Deal found 10/31![Air New Zealand logo]()
$1,373
This Philippine 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 Philippine Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/86:29 am -
2 stops34h 21m
Wed 11/1811:30 am -
2 stops34h 32m
Deal found 11/4![Multiple Airlines logo]()
$1,308
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/86:30 am -
2 stops30h 55m
Mon 11/236:00 am -
3 stops41h 14m
Deal found 11/3![Multiple Airlines logo]()
$1,320
This oojo deal was found by Cheapflights users on 10/31. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/86:55 am -
2 stops32h 40m
Wed 11/1811:50 am -
2 stops24h 06m
Deal found 10/31![Air New Zealand logo]()
$1,341
This Philippine 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 Philippine Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/109:04 pm -
2 stops41h 26m
Tue 11/179:20 am -
2 stops36h 42m
Deal found 11/3![Multiple Airlines logo]()
$1,308
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/116:30 am -
3 stops34h 50m
Sun 11/221:55 pm -
3 stops32h 15m
Deal found 11/3![Multiple Airlines logo]()
$1,349
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/147:55 pm -
2 stops56h 55m
Fri 11/2011:50 am -
2 stops24h 06m
Deal found 11/4![Air New Zealand logo]()
$1,369
This Trip.com 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/19:13 am -
3 stops34h 07m
Tue 12/81:45 pm -
3 stops32h 16m
Deal found 11/3![Multiple Airlines logo]()
$1,201
This Trip.com 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/27:00 am -
2 stops33h 30m
Sat 12/56:45 am -
3 stops35h 09m
Deal found 11/3![Multiple Airlines logo]()
$1,185
This Trip.com 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/48:30 am -
3 stops34h 55m
Tue 12/81:45 pm -
3 stops28h 09m
Deal found 11/2![Multiple Airlines logo]()
$1,122
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/49:05 pm -
1 stop40h 20m
Fri 12/117:15 pm -
2 stops38h 00m
Deal found 11/4![Qantas Airways logo]()
$1,339
One-way flights from Illinois to AustraliaSearch for one-way flight options from Illinois to Australia. Find affordable one-way fares based on user searches. Data last updated November 5, 2026.
Search for one-way flight options from Illinois to Australia. Find affordable one-way fares based on user searches. Data last updated November 5, 2026.
This Trip.com 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/16:21 am -
3 stops44h 54m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/3![Multiple Airlines logo]()
$571
This Kiwi.com deal was found by Cheapflights users on 11/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/25:40 am -
2 stops45h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/1![Multiple Airlines logo]()
$572
This Trip.com 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/285:40 am -
2 stops59h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/4![Multiple Airlines logo]()
$586
This Philippine 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 Philippine Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/176:29 am -
2 stops35h 21m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/4![Multiple Airlines logo]()
$617
This Kiwi.com deal was found by Cheapflights users on 11/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/275:40 am -
1 stop31h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/1![Multiple Airlines logo]()
$620
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/27:00 am -
2 stops30h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/3![Multiple Airlines logo]()
$631
This Kiwi.com deal was found by Cheapflights users on 10/31. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/266:21 am -
2 stops31h 04m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/31![Multiple Airlines logo]()
$632
This Philippine Airlines deal was found by Cheapflights users on 11/1. 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 Philippine Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/267:25 am -
2 stops34h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/1![Multiple Airlines logo]()
$656
This Mytrip deal was found by Cheapflights users on 11/1. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/27:00 am -
2 stops33h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/1![Multiple Airlines logo]()
$669
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/255:40 am -
2 stops36h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/4![Multiple Airlines logo]()
$701
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/106:21 am -
3 stops58h 19m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/2![Multiple Airlines logo]()
$703
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/304:25 pm -
3 stops44h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/3![Multiple Airlines logo]()
$737
Find flight deals from Illinois to Australia
Keep the following information in mind while searching for Illinois to Australia flight deals. Data was last updated November 5, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,122 (Trip.com) |
One-way from | $571 (Trip.com) |
Popular in | December |
Cheapest in | February |
Average price | $1,453 |
Cheapflights Fare Finder
Customize your flight search to find flights from Illinois to Australia 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 7,457,451 searches. Data last updated November 5, 2026.
Use the filters below to find and compare flights from Illinois to Australia that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
ChicagoSydney
ORD Chicago O'Hare Intl - SYD Sydney Kingsford Smith
ORDSYD
Chicago O'Hare Intl
Sat 2/27
8:50 pm-9:50 am
2 stops44h 00m
Sydney Kingsford Smith
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$617
ChicagoSydney
ORD Chicago O'Hare Intl - SYD Sydney Kingsford Smith
ORDSYD
Chicago O'Hare Intl
Tue 3/23
7:35 am-9:50 am
2 stops34h 15m
Sydney Kingsford Smith
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$617
ChicagoSydney
ORD Chicago O'Hare Intl - SYD Sydney Kingsford Smith
ORDSYD
Chicago O'Hare Intl
Fri 2/26
6:21 am-6:25 am
2 stops31h 04m
Sydney Kingsford Smith
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$632
ChicagoSydney
ORD Chicago O'Hare Intl - SYD Sydney Kingsford Smith
ORDSYD
Chicago O'Hare Intl
Fri 3/5
5:00 am-9:50 am
2 stops35h 50m
Sydney Kingsford Smith
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$656
ChicagoBrisbane
ORD Chicago O'Hare Intl - BNE Brisbane
ORDBNE
Chicago O'Hare Intl
Fri 2/26
7:25 am-10:15 am
2 stops34h 50m
Brisbane
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$656
ChicagoSydney
ORD Chicago O'Hare Intl - SYD Sydney Kingsford Smith
ORDSYD
Chicago O'Hare Intl
Tue 11/10
6:29 am-9:50 am
2 stops34h 21m
Sydney Kingsford Smith
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$682
ChicagoSydney
ORD Chicago O'Hare Intl - SYD Sydney Kingsford Smith
ORDSYD
Chicago O'Hare Intl
Fri 12/25
5:40 am-6:25 am
1 stop31h 45m
Sydney Kingsford Smith
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$701
ChicagoBrisbane
ORD Chicago O'Hare Intl - BNE Brisbane
ORDBNE
Chicago O'Hare Intl
Fri 12/25
5:40 am-9:45 am
2 stops36h 05m
Brisbane
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$701
ChicagoCoolangatta
ORD Chicago O'Hare Intl - OOL Coolangatta Gold Coast
ORDOOL
Chicago O'Hare Intl
Wed 2/10
6:21 am-8:40 am
3 stops58h 19m
Coolangatta Gold Coast
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$703
ChicagoSydney
ORD Chicago O'Hare Intl - SYD Sydney Kingsford Smith
ORDSYD
Chicago O'Hare Intl
Fri 11/13
5:30 am-9:50 am
2 stops35h 20m
Sydney Kingsford Smith
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$721
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Illinois to Australia
Have a flexible travel schedule? Discover the best time to fly to Australia from Illinois with our price prediction graph.
ORD-MEL
ORD-SYD
ORD-BNE
ORD-OOL
ORD-PER
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 Australia
USIL-AU0
ORD-MEL
ORD-SYD
ORD-BNE
ORD-OOL
What is the cheapest month to book a flight from Illinois to Australia?
Currently, January is the cheapest month in which you can book a flight from Illinois to Australia (average of $1,193). Flying from Illinois to Australia in December is currently the most expensive (average of $1,833). 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.
How far ahead should I book a flight from Illinois to Australia?
Booking 37 days in advance of your planned departure date is, on average, the best time to get cheap flights from Illinois to Australia. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
Related info for your journey
Find useful and relevant information for your journey from Illinois to Australia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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.
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Alternative routes for Illinois to Australia
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Australia by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Illinois to Australia by cabin class
Find flights from Illinois to Australia, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Illinois and Australia flights
Browse other Illinois and Australia flight options. Last updated on November 5, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Find a return flight route from Australia
Find the right flight back to Illinois after your stay in Australia
Illinois to Australia flights
Consider these flights traveling from Illinois to Australia.
Fly to Australia regions
Consider these flights traveling to Australia regions.
Top 10 airlines flying from Illinois to Australia
Discover the top 10 airlines that operate flights from Illinois to Australia. 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 7,457,451 searches. Data last updated November 5, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$237 | Average$1,360 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$712 | Average$1,267 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$716 | Average$819 | FlexibilityNo cancel fee | On-time74% | |
| Cheapest$894 | Average$1,576 | FlexibilityNo cancel fee | On-time74% | |
| Cheapest$1,021 | Average$1,718 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$1,144 | Average$1,622 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$1,209 | Average$1,270 | FlexibilityNo cancel fee | On-time80% | |
| Cheapest$1,218 | Average$1,618 | FlexibilityNo cancel fee | On-time68% | |
| Cheapest$1,279 | Average$1,629 | FlexibilityNo cancel fee | On-time78% | |
| Cheapest$1,560 | Average$1,890 | FlexibilityNo cancel fee | On-time72% |