$516+ 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 10/20. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SYD
Oct 22 — Oct 291
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Illinois to Australia with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Illinois to Australia
Cheapest
Best
Last-minute
One-way
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 September 22, 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 September 22, 2026.
This lol.travel deal was found by Cheapflights users on 9/17. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/183:40 pm -
1 stop24h 25m
Sun 11/110:45 am -
1 stop19h 52m
Deal found 9/17![Air Canada logo]()
$1,209
This oojo deal was found by Cheapflights users on 9/20. 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.
Mon 11/27:29 am -
2 stops34h 06m
Mon 11/169:55 am -
2 stops29h 05m
Deal found 9/20![Air New Zealand logo]()
$1,235
This FlightHub deal was found by Cheapflights users on 9/21. 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.
Sun 11/16:15 am -
2 stops33h 20m
Sun 11/811:50 am -
2 stops27h 25m
Deal found 9/21![Air New Zealand logo]()
$1,235
This oojo deal was found by Cheapflights users on 9/19. 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 11/89:21 am -
2 stops30h 14m
Wed 11/1811:50 am -
2 stops24h 06m
Deal found 9/19![Air New Zealand logo]()
$1,239
This FlightHub deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1110:45 pm -
1 stop39h 45m
Wed 11/259:20 am -
1 stop24h 35m
Deal found 9/22![Philippine Airlines logo]()
$1,241
This FlightHub deal was found by Cheapflights users on 9/20. 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.
Sat 11/147:55 pm -
2 stops43h 40m
Wed 11/259:55 am -
2 stops30h 32m
Deal found 9/20![Air New Zealand logo]()
$1,244
This oojo deal was found by Cheapflights users on 9/20. 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 11/19:21 am -
2 stops30h 14m
Sun 11/157:25 pm -
2 stops42h 12m
Deal found 9/20![Air New Zealand logo]()
$1,258
This oojo deal was found by Cheapflights users on 9/18. 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.
Mon 11/29:21 am -
2 stops30h 14m
Mon 11/97:25 pm -
2 stops42h 10m
Deal found 9/18![Air New Zealand logo]()
$1,259
This Kiwi.com deal was found by Cheapflights users on 9/22. 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 11/104:25 pm -
1 stop34h 50m
Tue 11/1712:25 pm -
2 stops33h 55m
Deal found 9/22![ANA logo]()
$1,260
This lol.travel deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/33:30 pm -
1 stop25h 05m
Tue 11/1011:20 am -
1 stop25h 39m
Deal found 9/19![Air Canada logo]()
$1,261
This lol.travel deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/183:40 pm -
1 stop24h 40m
Sun 11/111:20 am -
1 stop25h 39m
Deal found 9/21![Air Canada logo]()
$1,262
This Mytrip deal was found by Cheapflights users on 9/20. 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.
Tue 10/206:30 am -
2 stops33h 00m
Tue 10/2711:15 am -
2 stops29h 06m
Deal found 9/20![Multiple Airlines logo]()
$1,267
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 September 22, 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 September 22, 2026.
This lol.travel deal was found by Cheapflights users on 9/17. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/187:45 pm -
1 stop20h 20m
Sun 11/110:45 am -
2 stops25h 07m
Deal found 9/17![Air Canada logo]()
$1,211
This Philippine Airlines deal was found by Cheapflights users on 9/19. 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 10/136:00 am -
2 stops35h 00m
Wed 10/2111:15 am -
2 stops34h 25m
Deal found 9/19![Multiple Airlines logo]()
$1,319
This Qantas Airways deal was found by Cheapflights users on 9/18. 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.
Mon 3/82:54 pm -
1 stop23h 01m
Sat 3/206:05 am -
2 stops23h 59m
Deal found 9/18![Qantas Airways logo]()
$1,321
This Qatar Airways deal was found by Cheapflights users on 9/19. 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.
Sun 1/246:50 pm -
1 stop41h 55m
Fri 2/55:10 pm -
1 stop38h 20m
Deal found 9/19![Qatar Airways logo]()
$1,329
This Delta deal was found by Cheapflights users on 9/19. 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 11/312:00 pm -
2 stops27h 30m
Tue 11/1010:40 am -
2 stops24h 01m
Deal found 9/19![Delta logo]()
$1,334
This United Airlines deal was found by Cheapflights users on 9/20. 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.
Sun 1/311:09 pm -
2 stops24h 51m
Tue 2/99:20 am -
1 stop21h 45m
Deal found 9/20![United Airlines logo]()
$1,359
This Philippine Airlines deal was found by Cheapflights users on 9/21. 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.
Mon 11/910:45 pm -
1 stop42h 35m
Mon 11/238:35 am -
1 stop22h 20m
Deal found 9/21![Philippine Airlines logo]()
$1,423
This Turkish Airlines deal was found by Cheapflights users on 9/20. 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.
Mon 11/29:15 pm -
2 stops53h 10m
Thu 11/59:35 pm -
2 stops54h 25m
Deal found 9/20![Turkish Airlines logo]()
$1,517
This oojo deal was found by Cheapflights users on 9/21. 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 12/199:50 pm -
2 stops49h 15m
Mon 12/2811:15 am -
2 stops25h 23m
Deal found 9/21![Air New Zealand logo]()
$2,333
This Air Canada deal was found by Cheapflights users on 9/18. 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.
Mon 11/28:40 am -
2 stops32h 05m
Mon 11/910:45 am -
2 stops37h 15m
Deal found 9/18![Air Canada logo]()
$1,284
This Philippine Airlines deal was found by Cheapflights users on 9/17. 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 Philippine Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/156:00 am -
2 stops35h 00m
Thu 10/2211:15 am -
2 stops34h 25m
Deal found 9/17![Multiple Airlines logo]()
$1,320
This United Airlines deal was found by Cheapflights users on 9/20. 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.
Sun 1/318:30 am -
1 stop28h 50m
Mon 2/89:20 am -
1 stop24h 23m
Deal found 9/20![United Airlines logo]()
$1,359
This Qatar Airways deal was found by Cheapflights users on 9/20. 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.
Wed 11/116:50 pm -
2 stops37h 10m
Sat 11/2110:45 pm -
1 stop29h 45m
Deal found 9/20![Qatar Airways logo]()
$1,425
This Philippine Airlines deal was found by Cheapflights users on 9/21. 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.
Thu 11/55:30 am -
2 stops36h 45m
Thu 11/1211:35 am -
2 stops33h 27m
Deal found 9/21![Multiple Airlines logo]()
$1,320
This United Airlines deal was found by Cheapflights users on 9/20. 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 2/13:03 pm -
1 stop22h 57m
Tue 2/99:20 am -
1 stop24h 23m
Deal found 9/20![United Airlines logo]()
$1,359
This Delta deal was found by Cheapflights users on 9/22. 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 10/2712:00 pm -
2 stops27h 00m
Wed 11/1110:10 am -
2 stops28h 08m
Deal found 9/22![Delta logo]()
$1,514
This Qatar Airways deal was found by Cheapflights users on 9/21. 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 2/16:50 pm -
2 stops33h 50m
Sun 2/284:10 pm -
1 stop39h 20m
Deal found 9/21![Qatar Airways logo]()
$1,468
This Philippine Airlines deal was found by Cheapflights users on 9/21. 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 10/136:00 am -
2 stops35h 00m
Fri 10/1611:15 am -
2 stops34h 25m
Deal found 9/21![Multiple Airlines logo]()
$1,348
This United Airlines deal was found by Cheapflights users on 9/20. 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.
Tue 10/1311:10 am -
2 stops28h 45m
Wed 11/189:15 am -
1 stop21h 58m
Deal found 9/20![United Airlines logo]()
$1,364
This Qantas Airways deal was found by Cheapflights users on 9/20. 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 12/53:25 pm -
1 stop22h 25m
Mon 1/189:40 am -
1 stop24h 49m
Deal found 9/20![Qantas Airways logo]()
$1,655
This Delta deal was found by Cheapflights users on 9/20. 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.
Wed 12/97:45 am -
1 stop32h 45m
Sun 1/2410:40 am -
1 stop22h 41m
Deal found 9/20![Delta logo]()
$1,600
This Air Canada deal was found by Cheapflights users on 9/18. 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.
Fri 2/264:05 pm -
3 stops53h 00m
Mon 3/86:00 am -
3 stops50h 26m
Deal found 9/18![Multiple Airlines logo]()
$1,371
This Justfly.com deal was found by Cheapflights users on 9/19. 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.
Fri 3/1912:50 pm -
3 stops42h 30m
Wed 3/3110:40 pm -
2 stops28h 55m
Deal found 9/19![Air Canada logo]()
$1,704
This Qatar Airways deal was found by Cheapflights users on 9/19. 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.
Sun 1/311:03 pm -
2 stops33h 17m
Sun 2/141:20 pm -
2 stops39h 10m
Deal found 9/19![Qatar Airways logo]()
$1,553
This United Airlines deal was found by Cheapflights users on 9/17. 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.
Tue 10/131:29 pm -
2 stops26h 31m
Fri 11/1311:20 am -
2 stops22h 39m
Deal found 9/17![United Airlines logo]()
$1,414
This Delta deal was found by Cheapflights users on 9/21. 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.
Wed 11/116:44 pm -
2 stops44h 16m
Wed 11/2510:10 am -
2 stops29h 44m
Deal found 9/21![Delta logo]()
$1,614
This KAYAK deal was found by Cheapflights users on 9/20. 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.
Mon 2/223:35 pm -
2 stops29h 30m
Mon 3/86:00 am -
2 stops25h 35m
Deal found 9/20![Multiple Airlines logo]()
$1,402
This Qatar Airways deal was found by Cheapflights users on 9/21. 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 11/56:50 pm -
1 stop35h 30m
Thu 11/126:50 pm -
2 stops36h 40m
Deal found 9/21![Qatar Airways logo]()
$1,554
This United Airlines deal was found by Cheapflights users on 9/18. 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 10/163:11 pm -
2 stops24h 44m
Fri 10/2311:20 am -
2 stops23h 41m
Deal found 9/18![United Airlines logo]()
$1,434
This Delta deal was found by Cheapflights users on 9/20. 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.
Wed 11/411:39 am -
2 stops27h 51m
Wed 11/1110:40 am -
2 stops22h 59m
Deal found 9/20![Delta logo]()
$1,617
Last-minute flights from Illinois to AustraliaDiscover last-minute flight deals from Illinois to Australia. Data last updated September 22, 2026 and is based on user searches.
Discover last-minute flight deals from Illinois to Australia. Data last updated September 22, 2026 and is based on user searches.
This Philippine Airlines deal was found by Cheapflights users on 9/20. 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.
Mon 9/219:55 am -
2 stops33h 10m
Mon 9/2811:20 am -
2 stops40h 02m
Deal found 9/20![Multiple Airlines logo]()
$1,320
This Philippine Airlines deal was found by Cheapflights users on 9/17. 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 Philippine Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/19:10 pm -
2 stops43h 50m
Sun 10/411:15 am -
2 stops34h 44m
Deal found 9/17![Multiple Airlines logo]()
$1,294
This lol.travel deal was found by Cheapflights users on 9/17. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/183:40 pm -
1 stop24h 25m
Sun 11/110:45 am -
1 stop19h 52m
Deal found 9/17![Air Canada logo]()
$1,209
This lol.travel deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/183:40 pm -
1 stop24h 40m
Sun 11/111:20 am -
1 stop25h 39m
Deal found 9/21![Air Canada logo]()
$1,262
This Justfly.com deal was found by Cheapflights users on 9/18. 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.
Sun 10/183:40 pm -
1 stop24h 25m
Sun 10/259:45 am -
1 stop25h 16m
Deal found 9/18![Air Canada logo]()
$1,295
This Philippine Airlines deal was found by Cheapflights users on 9/19. 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.
Mon 10/197:00 am -
2 stops32h 30m
Mon 10/269:20 am -
2 stops30h 10m
Deal found 9/19![Multiple Airlines logo]()
$1,320
This Expedia deal was found by Cheapflights users on 9/17. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/193:40 pm -
2 stops28h 55m
Mon 11/97:45 am -
3 stops28h 20m
Deal found 9/17![Multiple Airlines logo]()
$1,328
This Mytrip deal was found by Cheapflights users on 9/20. 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.
Tue 10/206:30 am -
2 stops33h 00m
Tue 10/2711:15 am -
2 stops29h 06m
Deal found 9/20![Multiple Airlines logo]()
$1,267
This Philippine Airlines deal was found by Cheapflights users on 9/21. 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 10/207:20 am -
2 stops35h 45m
Tue 11/1711:35 am -
1 stop45h 20m
Deal found 9/21![Multiple Airlines logo]()
$1,312
This Air Canada deal was found by Cheapflights users on 9/17. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/218:40 am -
2 stops31h 40m
Mon 11/911:20 am -
2 stops37h 40m
Deal found 9/17![Air Canada logo]()
$1,286
This lol.travel deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/213:40 pm -
1 stop24h 40m
Wed 10/2810:20 am -
2 stops25h 32m
Deal found 9/20![Air Canada logo]()
$1,303
This oojo deal was found by Cheapflights users on 9/18. 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 10/233:00 pm -
2 stops25h 35m
Wed 11/42:05 pm -
2 stops24h 57m
Deal found 9/18![Air New Zealand logo]()
$1,283
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 September 22, 2026.
Search for one-way flight options from Illinois to Australia. Find affordable one-way fares based on user searches. Data last updated September 22, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/19. 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 10/208:01 pm -
1 stop43h 29m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/19![Multiple Airlines logo]()
$516
This Kiwi.com deal was found by Cheapflights users on 9/21. 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 10/248:01 pm -
1 stop42h 24m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/21![Multiple Airlines logo]()
$517
This Kiwi.com deal was found by Cheapflights users on 9/21. 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 2/235:40 am -
1 stop34h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/21![Multiple Airlines logo]()
$533
This Kiwi.com deal was found by Cheapflights users on 9/17. 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.
Tue 10/2712:27 pm -
2 stops49h 58m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/17![Multiple Airlines logo]()
$533
This Kiwi.com deal was found by Cheapflights users on 9/21. 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 2/225:40 am -
1 stop34h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/21![Multiple Airlines logo]()
$535
This Kiwi.com deal was found by Cheapflights users on 9/17. 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.
Wed 10/286:16 am -
2 stops32h 09m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/17![Multiple Airlines logo]()
$535
This Kiwi.com deal was found by Cheapflights users on 9/17. 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 10/243:30 pm -
2 stops46h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/17![Multiple Airlines logo]()
$542
This Kiwi.com deal was found by Cheapflights users on 9/21. 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 2/245:40 am -
1 stop34h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/21![Multiple Airlines logo]()
$543
This Kiwi.com deal was found by Cheapflights users on 9/20. 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 2/205:40 am -
1 stop34h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/20![Multiple Airlines logo]()
$553
This Kiwi.com deal was found by Cheapflights users on 9/21. 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 2/255:40 am -
1 stop34h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/21![Multiple Airlines logo]()
$565
This Kiwi.com deal was found by Cheapflights users on 9/17. 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.
Thu 11/196:30 am -
2 stops30h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/17![Multiple Airlines logo]()
$571
This Kiwi.com deal was found by Cheapflights users on 9/20. 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 3/12:10 pm -
2 stops48h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/20![Multiple Airlines logo]()
$579
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 September 22, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,169 (Expedia) |
One-way from | $516 (Kiwi.com) |
Popular in | December |
Cheapest in | June |
Average price | $1,605 |
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 September 22, 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 10/24
8:01 pm-6:25 am
1 stop42h 24m
Sydney Kingsford Smith
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$517
ChicagoSydney
ORD Chicago O'Hare Intl - SYD Sydney Kingsford Smith
ORDSYD
Chicago O'Hare Intl
Tue 10/20
8:01 pm-7:30 am
1 stop43h 29m
Sydney Kingsford Smith
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$533
ChicagoSydney
MDW Chicago Midway - SYD Sydney Kingsford Smith
MDWSYD
Chicago Midway
Tue 10/27
12:27 pm-6:25 am
2 stops49h 58m
Sydney Kingsford Smith
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$533
ChicagoSydney
MDW Chicago Midway - SYD Sydney Kingsford Smith
MDWSYD
Chicago Midway
Sat 10/24
3:30 pm-6:25 am
2 stops46h 55m
Sydney Kingsford Smith
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$542
ChicagoSydney
ORD Chicago O'Hare Intl - SYD Sydney Kingsford Smith
ORDSYD
Chicago O'Hare Intl
Thu 11/19
6:30 am-6:25 am
2 stops30h 55m
Sydney Kingsford Smith
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$571
ChicagoPerth
ORD Chicago O'Hare Intl - PER Perth
ORDPER
Chicago O'Hare Intl
Mon 3/1
2:10 pm-4:40 am
2 stops48h 30m
Perth
Wed 12/31
12:00 am-10:00 am
Nonstop0h 00m
$579
ChicagoMelbourne
ORD Chicago O'Hare Intl - AVV Melbourne Avalon
ORDAVV
Chicago O'Hare Intl
Sat 10/24
8:01 pm-9:45 am
2 stops45h 44m
Melbourne Avalon
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$582
ChicagoPerth
ORD Chicago O'Hare Intl - PER Perth
ORDPER
Chicago O'Hare Intl
Tue 9/29
2:00 pm-3:45 am
3 stops48h 45m
Perth
Wed 12/31
12:00 am-10:00 am
Nonstop0h 00m
$592
ChicagoMelbourne
ORD Chicago O'Hare Intl - AVV Melbourne Avalon
ORDAVV
Chicago O'Hare Intl
Tue 2/23
5:40 am-3:35 pm
2 stops40h 55m
Melbourne Avalon
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$599
St. LouisSydney
STL Lambert-St Louis - SYD Sydney Kingsford Smith
STLSYD
Lambert-St Louis
Tue 10/27
1:08 pm-8:40 am
3 stops27h 32m
Sydney Kingsford Smith
Wed 12/31
12:00 am-8:00 am
Nonstop0h 00m
$708
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-BNE
ORD-SYD
STL-SYD
ORD-MEL
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-BNE
ORD-SYD
STL-SYD
ORD-MEL
What is the cheapest month to book a flight from Illinois to Australia?
Currently, February is the cheapest month in which you can book a flight from Illinois to Australia (average of $1,237). Flying from Illinois to Australia in December is currently the most expensive (average of $1,739). 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.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Popular flights
Return Flight Options
Top destinations
Top regions
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 September 22, 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 September 22, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$237 | Average$1,376 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$712 | Average$1,250 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$716 | Average$819 | FlexibilityNo cancel fee | On-time74% | |
| Cheapest$837 | Average$1,604 | FlexibilityNo cancel fee | On-time74% | |
| Cheapest$837 | Average$1,717 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$870 | Average$1,700 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$1,193 | Average$1,270 | FlexibilityNo cancel fee | On-time80% | |
| Cheapest$1,217 | Average$1,707 | FlexibilityNo cancel fee | On-time78% | |
| Cheapest$1,560 | Average$1,973 | FlexibilityNo cancel fee | On-time72% | |
| Cheapest$1,581 | Average$1,973 | FlexibilityNo cancel fee | On-time68% |