$501+ Cheap flights from Sydney (SYD) to Illinois
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 9/4. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — ORD
May 17 — May 241
Round-trip
1 adult, Economy
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Cheapest flights from Sydney to IllinoisExplore 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 April 17, 2026.
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 April 17, 2026.
This Trip.com deal was found by Cheapflights users on 4/16. 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 5/41:15 pm
SYD
- ORD
2 stops31h 35m
Multiple Airlines
Fri 5/88:30 am
ORD
- SYD
3 stops36h 20m
Multiple Airlines
Deal found 4/16![Multiple Airlines logo]()
$1,073
This Trip.com deal was found by Cheapflights users on 4/14. 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.
Sat 5/91:15 pm
SYD
- ORD
2 stops31h 44m
Multiple Airlines
Sun 5/317:15 am
ORD
- SYD
2 stops37h 35m
Multiple Airlines
Deal found 4/14![Multiple Airlines logo]()
$1,093
This FlightHub deal was found by Cheapflights users on 4/14. 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.
Tue 9/811:45 am
SYD
- ORD
2 stops32h 00m
ANA
Fri 9/115:45 pm
ORD
- SYD
1 stop34h 25m
ANA
Deal found 4/14![ANA logo]()
$1,143
This ANA deal was found by Cheapflights users on 4/13. 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 ANA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1112:25 pm
SYD
- ORD
1 stop35h 55m
ANA
Mon 11/168:00 pm
ORD
- SYD
2 stops31h 15m
ANA
Deal found 4/13![ANA logo]()
$1,162
This Kiwi.com deal was found by Cheapflights users on 4/14. 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 6/35:50 pm
SYD
- ORD
1 stop27h 14m
Multiple Airlines
Tue 6/239:13 pm
ORD
- SYD
1 stop43h 17m
Multiple Airlines
Deal found 4/14![Multiple Airlines logo]()
$1,201
This Justfly.com deal was found by Cheapflights users on 4/17. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/211:45 am
SYD
- ORD
2 stops32h 00m
ANA
Fri 9/115:45 pm
ORD
- SYD
1 stop24h 40m
ANA
Deal found 4/17![ANA logo]()
$1,203
This Trip.com deal was found by Cheapflights users on 4/15. 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 5/55:50 pm
SYD
- MDW
2 stops32h 19m
Multiple Airlines
Wed 5/206:00 am
MDW
- SYD
2 stops34h 30m
Multiple Airlines
Deal found 4/15![Multiple Airlines logo]()
$1,217
This Kiwi.com deal was found by Cheapflights users on 4/15. 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 5/195:50 pm
SYD
- ORD
1 stop27h 49m
Multiple Airlines
Tue 5/268:46 pm
ORD
- SYD
1 stop43h 44m
Multiple Airlines
Deal found 4/15![Multiple Airlines logo]()
$1,218
This Kiwi.com deal was found by Cheapflights users on 4/13. 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.
Thu 5/285:50 pm
SYD
- ORD
1 stop27h 44m
Multiple Airlines
Thu 6/49:20 am
ORD
- SYD
2 stops35h 30m
Multiple Airlines
Deal found 4/13![Multiple Airlines logo]()
$1,242
This Jettzy deal was found by Cheapflights users on 4/13. 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 Jettzy is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/209:20 am
SYD
- STL
2 stops26h 23m
Air Canada
Thu 6/114:48 pm
STL
- SYD
2 stops23h 32m
Air Canada
Deal found 4/13![Air Canada logo]()
$1,245
This Kiwi.com deal was found by Cheapflights users on 4/17. 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 6/15:50 pm
SYD
- ORD
1 stop27h 14m
Multiple Airlines
Mon 6/89:37 pm
ORD
- SYD
2 stops42h 53m
Multiple Airlines
Deal found 4/17![Multiple Airlines logo]()
$1,256
This BYOjet deal was found by Cheapflights users on 4/13. 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 BYOjet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/209:20 am
SYD
- STL
2 stops26h 05m
Air Canada
Fri 6/124:48 pm
STL
- SYD
2 stops23h 32m
Air Canada
Deal found 4/13![Air Canada logo]()
$1,257
Best flights from Sydney to IllinoisDiscover carefully curated flight deals from Sydney to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 17, 2026.
Discover carefully curated flight deals from Sydney to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 17, 2026.
This Air Canada deal was found by Cheapflights users on 4/12. 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 5/209:20 am
SYD
- STL
2 stops26h 05m
Air Canada
Thu 5/281:05 pm
STL
- SYD
3 stops51h 15m
Air Canada
Deal found 4/12![Air Canada logo]()
$1,314
This Etihad Airways deal was found by Cheapflights users on 4/13. 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 Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/163:40 pm
SYD
- ORD
2 stops37h 40m
Multiple Airlines
Sat 6/62:00 pm
ORD
- SYD
1 stop35h 50m
Multiple Airlines
Deal found 4/13![Multiple Airlines logo]()
$1,497
This Delta deal was found by Cheapflights users on 4/17. 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.
Mon 7/279:15 am
SYD
- STL
2 stops29h 38m
Delta
Wed 8/128:50 am
STL
- SYD
2 stops31h 00m
Delta
Deal found 4/17![Delta logo]()
$1,502
This American Airlines deal was found by Cheapflights users on 4/12. 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 5/209:10 am
SYD
- STL
1 stop29h 49m
American Airlines
Thu 5/281:45 pm
STL
- SYD
2 stops26h 20m
American Airlines
Deal found 4/12![American Airlines logo]()
$1,513
This United Airlines deal was found by Cheapflights users on 4/17. 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 7/2310:20 am
SYD
- STL
2 stops44h 26m
United Airlines
Fri 8/77:23 pm
STL
- SYD
1 stop20h 32m
United Airlines
Deal found 4/17![United Airlines logo]()
$1,552
This Etihad Airways deal was found by Cheapflights users on 4/14. 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 Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/103:40 pm
SYD
- ORD
2 stops38h 41m
Multiple Airlines
Thu 5/142:00 pm
ORD
- SYD
1 stop35h 50m
Multiple Airlines
Deal found 4/14![Multiple Airlines logo]()
$1,497
This Delta deal was found by Cheapflights users on 4/17. 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.
Mon 7/279:15 am
SYD
- STL
2 stops29h 38m
Delta
Tue 8/1112:10 pm
STL
- SYD
2 stops27h 40m
Delta
Deal found 4/17![Delta logo]()
$1,502
This United Airlines deal was found by Cheapflights users on 4/17. 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 7/2510:20 am
SYD
- STL
2 stops44h 26m
United Airlines
Sun 8/97:23 pm
STL
- SYD
1 stop20h 32m
United Airlines
Deal found 4/17![United Airlines logo]()
$1,552
This United Airlines deal was found by Cheapflights users on 4/17. 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 7/2410:20 am
SYD
- STL
2 stops44h 26m
United Airlines
Sat 8/87:23 pm
STL
- SYD
1 stop20h 32m
United Airlines
Deal found 4/17![United Airlines logo]()
$1,603
This Alaska Airlines deal was found by Cheapflights users on 4/15. 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.
Tue 6/28:45 pm
SYD
- ORD
2 stops31h 29m
Multiple Airlines
Tue 6/235:42 pm
ORD
- SYD
2 stops34h 08m
Multiple Airlines
Deal found 4/15![Multiple Airlines logo]()
$1,652
This Delta deal was found by Cheapflights users on 4/13. 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 5/79:15 am
SYD
- MDW
2 stops24h 18m
Delta
Wed 5/201:22 pm
MDW
- SYD
2 stops26h 28m
Delta
Deal found 4/13![Delta logo]()
$1,677
This Delta deal was found by Cheapflights users on 4/15. 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 5/199:15 am
SYD
- MDW
2 stops23h 41m
Delta
Tue 5/2612:53 pm
MDW
- SYD
2 stops26h 57m
Delta
Deal found 4/15![Delta logo]()
$1,688
This Alaska Airlines deal was found by Cheapflights users on 4/15. 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.
Tue 5/58:45 pm
SYD
- ORD
3 stops24h 55m
Multiple Airlines
Wed 5/207:49 pm
ORD
- SYD
2 stops32h 01m
Multiple Airlines
Deal found 4/15![Multiple Airlines logo]()
$1,695
This Delta deal was found by Cheapflights users on 4/15. 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.
Mon 6/89:15 am
SYD
- MDW
2 stops24h 03m
Delta
Tue 6/161:49 pm
MDW
- SYD
2 stops26h 01m
Delta
Deal found 4/15![Delta logo]()
$1,714
This Alaska Airlines deal was found by Cheapflights users on 4/14. 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 5/78:45 pm
SYD
- ORD
3 stops31h 28m
Multiple Airlines
Thu 5/213:28 pm
ORD
- SYD
2 stops36h 22m
Multiple Airlines
Deal found 4/14![Multiple Airlines logo]()
$1,722
This United Airlines deal was found by Cheapflights users on 4/14. 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 7/910:20 am
SYD
- STL
1 stop22h 57m
United Airlines
Tue 7/217:23 pm
STL
- SYD
1 stop20h 32m
United Airlines
Deal found 4/14![United Airlines logo]()
$1,914
This Delta deal was found by Cheapflights users on 4/16. 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.
Mon 7/279:15 am
SYD
- MDW
2 stops39h 48m
Delta
Mon 9/2110:35 am
MDW
- SYD
2 stops29h 15m
Delta
Deal found 4/16![Delta logo]()
$1,722
This Qantas Airways deal was found by Cheapflights users on 4/14. 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 8/156:25 am
SYD
- STL
3 stops27h 49m
Multiple Airlines
Wed 9/95:11 pm
STL
- SYD
2 stops23h 49m
Multiple Airlines
Deal found 4/14![Multiple Airlines logo]()
$1,757
This Delta deal was found by Cheapflights users on 4/13. 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 6/309:15 am
SYD
- MDW
2 stops38h 22m
Delta
Wed 8/191:05 pm
MDW
- SYD
2 stops26h 45m
Delta
Deal found 4/13![Delta logo]()
$1,728
This Delta deal was found by Cheapflights users on 4/13. 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 6/309:15 am
SYD
- ORD
2 stops27h 40m
Delta
Tue 8/1811:30 am
ORD
- SYD
2 stops28h 20m
Delta
Deal found 4/13![Delta logo]()
$1,728
This Delta deal was found by Cheapflights users on 4/13. 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 6/309:15 am
SYD
- ORD
2 stops27h 40m
Delta
Mon 8/177:35 am
ORD
- SYD
1 stop32h 15m
Delta
Deal found 4/13![Delta logo]()
$1,728
This Delta deal was found by Cheapflights users on 4/15. 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.
Mon 6/229:15 am
SYD
- MDW
2 stops24h 03m
Delta
Sun 7/199:20 am
MDW
- SYD
2 stops30h 30m
Delta
Deal found 4/15![Delta logo]()
$1,740
This Delta deal was found by Cheapflights users on 4/17. 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 6/129:15 am
SYD
- MDW
2 stops28h 02m
Delta
Sun 7/129:49 am
MDW
- SYD
2 stops30h 01m
Delta
Deal found 4/17![Delta logo]()
$1,769
This Delta deal was found by Cheapflights users on 4/17. 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 10/19:15 am
SYD
- ORD
1 stop29h 30m
Delta
Fri 10/96:30 pm
ORD
- SYD
1 stop21h 20m
Delta
Deal found 4/17![Delta logo]()
$1,769
This Delta deal was found by Cheapflights users on 4/16. 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 5/89:15 am
SYD
- MDW
2 stops23h 41m
Delta
Fri 5/229:23 am
MDW
- SYD
2 stops30h 27m
Delta
Deal found 4/16![Delta logo]()
$1,797
This Delta deal was found by Cheapflights users on 4/16. 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 6/29:15 am
SYD
- MDW
2 stops24h 18m
Delta
Tue 6/2312:45 pm
MDW
- SYD
2 stops27h 05m
Delta
Deal found 4/16![Delta logo]()
$1,830
This Delta deal was found by Cheapflights users on 4/17. 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.
Mon 6/19:15 am
SYD
- MDW
2 stops24h 18m
Delta
Mon 6/811:05 am
MDW
- SYD
2 stops28h 45m
Delta
Deal found 4/17![Delta logo]()
$1,835
This Delta deal was found by Cheapflights users on 4/13. 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 7/39:15 am
SYD
- ORD
1 stop29h 03m
Delta
Sun 8/232:55 pm
ORD
- SYD
1 stop24h 55m
Delta
Deal found 4/13![Delta logo]()
$1,887
This Delta deal was found by Cheapflights users on 4/14. 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 7/39:15 am
SYD
- ORD
1 stop29h 03m
Delta
Fri 7/176:15 pm
ORD
- SYD
1 stop21h 35m
Delta
Deal found 4/14![Delta logo]()
$2,012
Last-minute flights from Sydney to IllinoisDiscover last-minute flight deals from Sydney to Illinois. Data last updated April 17, 2026 and is based on user searches.
Discover last-minute flight deals from Sydney to Illinois. Data last updated April 17, 2026 and is based on user searches.
This Trip.com deal was found by Cheapflights users on 4/13. 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 5/31:15 pm
SYD
- ORD
2 stops32h 05m
Multiple Airlines
Mon 5/188:30 am
ORD
- SYD
3 stops36h 35m
Multiple Airlines
Deal found 4/13![Multiple Airlines logo]()
$1,257
This Trip.com deal was found by Cheapflights users on 4/16. 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 5/41:15 pm
SYD
- ORD
2 stops31h 35m
Multiple Airlines
Fri 5/88:30 am
ORD
- SYD
3 stops36h 20m
Multiple Airlines
Deal found 4/16![Multiple Airlines logo]()
$1,073
This Trip.com deal was found by Cheapflights users on 4/15. 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 5/55:50 pm
SYD
- MDW
2 stops32h 19m
Multiple Airlines
Wed 5/206:00 am
MDW
- SYD
2 stops34h 30m
Multiple Airlines
Deal found 4/15![Multiple Airlines logo]()
$1,217
This Kiwi.com deal was found by Cheapflights users on 4/15. 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 5/55:50 pm
SYD
- ORD
1 stop27h 49m
Multiple Airlines
Wed 5/207:15 am
ORD
- SYD
2 stops33h 15m
Multiple Airlines
Deal found 4/15![Multiple Airlines logo]()
$1,292
This Trip.com deal was found by Cheapflights users on 4/14. 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.
Thu 5/79:10 am
SYD
- ORD
2 stops28h 51m
Multiple Airlines
Wed 5/207:15 am
ORD
- SYD
2 stops32h 50m
Multiple Airlines
Deal found 4/14![Multiple Airlines logo]()
$1,264
This Trip.com deal was found by Cheapflights users on 4/14. 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.
Sat 5/91:15 pm
SYD
- ORD
2 stops31h 44m
Multiple Airlines
Sun 5/317:15 am
ORD
- SYD
2 stops37h 35m
Multiple Airlines
Deal found 4/14![Multiple Airlines logo]()
$1,093
This Kiwi.com deal was found by Cheapflights users on 4/15. 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 5/195:50 pm
SYD
- ORD
1 stop27h 49m
Multiple Airlines
Tue 5/268:46 pm
ORD
- SYD
1 stop43h 44m
Multiple Airlines
Deal found 4/15![Multiple Airlines logo]()
$1,218
This Jettzy deal was found by Cheapflights users on 4/13. 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 Jettzy is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/209:20 am
SYD
- STL
2 stops26h 23m
Air Canada
Thu 6/114:48 pm
STL
- SYD
2 stops23h 32m
Air Canada
Deal found 4/13![Air Canada logo]()
$1,245
This BYOjet deal was found by Cheapflights users on 4/13. 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 BYOjet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/209:20 am
SYD
- STL
2 stops26h 05m
Air Canada
Fri 6/124:48 pm
STL
- SYD
2 stops23h 32m
Air Canada
Deal found 4/13![Air Canada logo]()
$1,257
This Air Canada deal was found by Cheapflights users on 4/13. 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 5/209:20 am
SYD
- STL
2 stops41h 46m
Air Canada
Thu 5/281:05 pm
STL
- SYD
2 stops27h 15m
Air Canada
Deal found 4/13![Air Canada logo]()
$1,259
This Kiwi.com deal was found by Cheapflights users on 4/13. 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.
Thu 5/285:50 pm
SYD
- ORD
1 stop27h 44m
Multiple Airlines
Thu 6/49:20 am
ORD
- SYD
2 stops35h 30m
Multiple Airlines
Deal found 4/13![Multiple Airlines logo]()
$1,242
This Kiwi.com deal was found by Cheapflights users on 4/15. 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 5/305:50 pm
SYD
- ORD
1 stop27h 09m
Multiple Airlines
Sat 6/69:04 pm
ORD
- SYD
1 stop43h 26m
Multiple Airlines
Deal found 4/15![Multiple Airlines logo]()
$1,263
One-way flights from Sydney to IllinoisSearch for one-way flight options from Sydney to Illinois. Find affordable one-way fares based on user searches. Data last updated April 17, 2026.
Search for one-way flight options from Sydney to Illinois. Find affordable one-way fares based on user searches. Data last updated April 17, 2026.
This Kiwi.com deal was found by Cheapflights users on 4/13. 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 9/47:50 pm
SYD
- ORD
3 stops43h 09m
Multiple Airlines
Deal found 4/13![Multiple Airlines logo]()
$501
This Kiwi.com deal was found by Cheapflights users on 4/13. 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 9/28:45 pm
SYD
- ORD
3 stops47h 50m
Multiple Airlines
Deal found 4/13![Multiple Airlines logo]()
$502
This Kiwi.com deal was found by Cheapflights users on 4/13. 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.
Thu 9/248:20 am
SYD
- ORD
3 stops35h 40m
Multiple Airlines
Deal found 4/13![Multiple Airlines logo]()
$564
This Kiwi.com deal was found by Cheapflights users on 4/15. 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 5/223:15 pm
SYD
- ORD
3 stops54h 19m
Multiple Airlines
Deal found 4/15![Multiple Airlines logo]()
$569
This Kiwi.com deal was found by Cheapflights users on 4/14. 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 7/157:15 pm
SYD
- ORD
3 stops55h 54m
Multiple Airlines
Deal found 4/14![Multiple Airlines logo]()
$584
This Kiwi.com deal was found by Cheapflights users on 4/17. 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 5/306:10 am
SYD
- ORD
3 stops38h 49m
Multiple Airlines
Deal found 4/17![Multiple Airlines logo]()
$586
This Kiwi.com deal was found by Cheapflights users on 4/14. 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.
Thu 6/186:10 am
SYD
- MDW
3 stops48h 05m
Multiple Airlines
Deal found 4/14![Multiple Airlines logo]()
$597
This Kiwi.com deal was found by Cheapflights users on 4/14. 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.
Thu 6/186:10 am
SYD
- ORD
3 stops48h 55m
Multiple Airlines
Deal found 4/14![Multiple Airlines logo]()
$628
This Kiwi.com deal was found by Cheapflights users on 4/15. 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.
Thu 5/216:10 am
SYD
- ORD
3 stops39h 24m
Multiple Airlines
Deal found 4/15![Multiple Airlines logo]()
$696
This Kiwi.com deal was found by Cheapflights users on 4/13. 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 5/55:50 pm
SYD
- ORD
1 stop27h 49m
Multiple Airlines
Deal found 4/13![Multiple Airlines logo]()
$699
This Kiwi.com deal was found by Cheapflights users on 4/14. 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 7/157:15 pm
SYD
- MDW
3 stops57h 52m
Multiple Airlines
Deal found 4/14![Multiple Airlines logo]()
$700
This Kiwi.com deal was found by Cheapflights users on 4/14. 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 6/196:35 pm
SYD
- MDW
3 stops59h 40m
Multiple Airlines
Deal found 4/14![Multiple Airlines logo]()
$836
Find flight deals from Sydney to Illinois
Keep the following information in mind while searching for Sydney to Illinois flight deals. Data was last updated April 17, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,073 (Trip.com) |
One-way from | $501 (Kiwi.com) |
Popular in | April |
Cheapest in | August |
Average price | $1,592 |
Cheapflights Fare Finder
Customize 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 2,558,603 searches. Data last updated April 17, 2026.
Use the filters below to find and compare flights from Sydney to Illinois that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
SydneySt. Louis
SYD - STL
SYDSTL
Sydney Kingsford Smith
Wed 5/20
9:20 am-8:25 pm
2 stops26h 05m
Lambert-St Louis
Thu 5/28
1:05 pm-7:20 am
3 stops51h 15m
$1,314
SydneyChicago
SYD - ORD
SYDORD
Sydney Kingsford Smith
Sat 5/16
3:40 pm-2:20 pm
2 stops37h 40m
Chicago O'Hare Intl
Sat 6/6
2:00 pm-4:50 pm
1 stop35h 50m
$1,497
SydneyChicago
SYD - ORD
SYDORD
Sydney Kingsford Smith
Sun 5/10
3:40 pm-3:21 pm
2 stops38h 41m
Chicago O'Hare Intl
Thu 5/14
2:00 pm-4:50 pm
1 stop35h 50m
$1,497
SydneySt. Louis
SYD - STL
SYDSTL
Sydney Kingsford Smith
Mon 7/27
9:15 am-11:53 pm
2 stops29h 38m
Lambert-St Louis
Wed 8/12
8:50 am-6:50 am
2 stops31h 00m
$1,502
SydneySt. Louis
SYD - STL
SYDSTL
Sydney Kingsford Smith
Mon 7/27
9:15 am-11:53 pm
2 stops29h 38m
Lambert-St Louis
Tue 8/11
12:10 pm-6:50 am
2 stops27h 40m
$1,502
SydneySt. Louis
SYD - STL
SYDSTL
Sydney Kingsford Smith
Wed 5/20
9:10 am-11:59 pm
1 stop29h 49m
Lambert-St Louis
Thu 5/28
1:45 pm-7:05 am
2 stops26h 20m
$1,513
SydneySt. Louis
SYD - STL
SYDSTL
Sydney Kingsford Smith
Thu 7/23
10:20 am-3:46 pm
2 stops44h 26m
Lambert-St Louis
Fri 8/7
7:23 pm-6:55 am
1 stop20h 32m
$1,552
SydneySt. Louis
SYD - STL
SYDSTL
Sydney Kingsford Smith
Sat 7/25
10:20 am-3:46 pm
2 stops44h 26m
Lambert-St Louis
Sun 8/9
7:23 pm-6:55 am
1 stop20h 32m
$1,552
SydneySt. Louis
SYD - STL
SYDSTL
Sydney Kingsford Smith
Fri 7/24
10:20 am-3:46 pm
2 stops44h 26m
Lambert-St Louis
Sat 8/8
7:23 pm-6:55 am
1 stop20h 32m
$1,603
SydneyChicago
SYD - ORD
SYDORD
Sydney Kingsford Smith
Tue 6/2
8:45 pm-1:14 pm
2 stops31h 29m
Chicago O'Hare Intl
Tue 6/23
5:42 pm-6:50 pm
2 stops34h 08m
$1,652
Showing 1-10 of 51 resultsSorted by cheapest first
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.
SYD-MDW
SYD-ORD
SYD-STL
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 Sydney to Illinois
SYD-USIL
SYD-MDW
SYD-ORD
SYD-STL
What is the cheapest month to book a flight from Sydney to Illinois?
Currently, December is the cheapest month in which you can book a flight from Sydney to Illinois (average of $468). Flying from Sydney to Illinois in February is currently the most expensive (average of $865). 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 much does it cost to fly round-trip from Sydney to Illinois?
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 April 17, 2026.
Get a feel of what it's like to fly with Qantas Airways and United Airlines from Sydney to Illinois by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Overall
7.5
Boarding
7.7
Comfort
7.5
Food
7.0
Crew
8.1
Entertainment
7.2
Reviews
1 / 20
2.0
MediocreMidhat,Feb 2026
WYA - ADL
Overall
7.5
Boarding
7.7
Comfort
7.5
Food
7.0
Crew
8.1
Entertainment
7.2
Reviews
1 / 20
2.0
MediocreMidhat,Feb 2026
WYA - ADL
Overall
7.5
Boarding
7.7
Comfort
7.5
Food
7.0
Crew
8.1
Entertainment
7.2
Reviews
1 / 20
2.0
MediocreMidhat,Feb 2026
WYA - ADL
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.
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Alternative routes for Sydney to Illinois
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Illinois by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Sydney to Illinois by cabin class
Find flights from Sydney to Illinois, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Sydney and Illinois flights
Browse other Sydney and Illinois flight options. Last updated on April 17, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Sydney to Illinois flights
Consider these flights traveling from Sydney to Illinois.
Top 2 airlines flying from Sydney to Illinois
Discover the top 2 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 2,558,603 searches. Data last updated April 17, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$795 | Average$1,155 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$970 | Average$1,012 | FlexibilityNo cancel fee | On-time74% |