$714+ Cheap flights from Sydney (SYD) to Illinois
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 9/30. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — ORD
Oct 23 — Oct 301
Round-trip
1 adult, Economy
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Find cheap flights from Sydney to Illinois 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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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 Sydney to Illinois
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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 September 23, 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 September 23, 2026.
This Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/22:00 pm -
3 stops32h 13m
Mon 11/96:30 am -
3 stops37h 05m
Deal found 9/18![Multiple Airlines logo]()
$908
This Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/52:00 pm -
3 stops32h 13m
Thu 11/1210:26 am -
3 stops33h 09m
Deal found 9/21![Multiple Airlines logo]()
$1,067
This Aunt Betty 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 Aunt Betty is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/107:30 am -
2 stops31h 30m
Tue 11/179:21 am -
2 stops30h 14m
Deal found 9/18![Air New Zealand logo]()
$1,205
This Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/86:50 pm -
2 stops26h 26m
Sat 10/246:30 am -
2 stops31h 55m
Deal found 9/19![Multiple Airlines logo]()
$1,261
This Jetabroad deal was found by Cheapflights users on 9/23. 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 Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/52:05 pm -
2 stops27h 54m
Thu 11/1211:52 am -
2 stops27h 43m
Deal found 9/23![Air New Zealand logo]()
$1,262
This SmartFares 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1910:20 pm -
1 stop31h 10m
Thu 11/262:10 pm -
1 stop48h 05m
Deal found 9/19![Cathay Pacific logo]()
$1,270
This SmartFares deal was found by Cheapflights users on 9/23. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/53:15 pm -
1 stop38h 15m
Thu 11/122:10 pm -
1 stop26h 25m
Deal found 9/23![Cathay Pacific logo]()
$1,271
This SmartFares 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/103:15 pm -
1 stop38h 15m
Tue 11/172:10 pm -
1 stop26h 25m
Deal found 9/18![Cathay Pacific logo]()
$1,273
This Aunt Betty 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 Aunt Betty is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/199:55 am -
2 stops30h 31m
Thu 11/2610:25 am -
2 stops29h 10m
Deal found 9/19![Air New Zealand logo]()
$1,276
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 September 23, 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 September 23, 2026.
This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/23:15 pm -
1 stop38h 15m
Mon 11/92:10 pm -
1 stop26h 25m
Deal found 9/18![Cathay Pacific logo]()
$1,278
This Cathay Pacific 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/29:05 pm -
2 stops32h 25m
Mon 11/92:10 pm -
1 stop26h 25m
Deal found 9/20![Multiple Airlines logo]()
$1,414
This Turkish 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/39:35 pm -
2 stops38h 45m
Tue 11/108:15 pm -
2 stops54h 10m
Deal found 9/19![Turkish Airlines logo]()
$1,472
This Cathay Pacific 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/510:20 pm -
1 stop31h 10m
Mon 11/92:10 pm -
1 stop37h 40m
Deal found 9/22![Cathay Pacific logo]()
$1,336
This Cathay Pacific 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/47:45 pm -
2 stops33h 45m
Wed 11/112:10 pm -
1 stop37h 40m
Deal found 9/19![Multiple Airlines logo]()
$1,416
This Philippine Airlines 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 Philippine Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/611:30 am -
2 stops35h 10m
Fri 11/1310:45 pm -
1 stop42h 05m
Deal found 9/22![Multiple Airlines logo]()
$1,425
This Cathay Pacific 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/57:45 pm -
2 stops33h 45m
Thu 11/122:10 pm -
1 stop29h 50m
Deal found 9/21![Multiple Airlines logo]()
$1,454
Last-minute flights from Sydney to IllinoisDiscover last-minute flight deals from Sydney to Illinois. Data last updated September 23, 2026 and is based on user searches.
Discover last-minute flight deals from Sydney to Illinois. Data last updated September 23, 2026 and is based on user searches.
This Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/86:50 pm -
2 stops26h 26m
Sat 10/246:30 am -
2 stops31h 55m
Deal found 9/19![Multiple Airlines logo]()
$1,261
This Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/910:10 am -
2 stops30h 49m
Sat 10/246:30 am -
2 stops31h 55m
Deal found 9/18![Multiple Airlines logo]()
$1,343
This BestPriceTravel 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 BestPriceTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/1110:10 am -
1 stop21h 49m
Mon 10/266:55 pm -
1 stop22h 05m
Deal found 9/20![Qantas Airways logo]()
$1,371
This BestPriceTravel 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 BestPriceTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1210:10 am -
1 stop21h 49m
Tue 10/276:55 pm -
1 stop22h 05m
Deal found 9/21![Qantas Airways logo]()
$1,321
This Aunt Betty 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 Aunt Betty is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/1411:55 am -
2 stops25h 42m
Thu 10/293:47 pm -
2 stops24h 48m
Deal found 9/21![Air New Zealand logo]()
$1,345
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.
Sat 10/176:50 pm -
1 stop27h 44m
Sat 10/242:14 pm -
2 stops26h 41m
Deal found 9/19![Multiple Airlines logo]()
$1,291
This Cathay Pacific 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1910:20 pm -
1 stop31h 35m
Mon 10/263:10 pm -
1 stop29h 50m
Deal found 9/20![Cathay Pacific logo]()
$1,341
This Aunt Betty 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 Aunt Betty is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/277:30 am -
2 stops30h 06m
Wed 11/1110:25 am -
2 stops38h 50m
Deal found 9/19![Air New Zealand logo]()
$1,298
This Bravofly 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 Bravofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2710:20 pm -
1 stop31h 10m
Wed 11/112:10 pm -
1 stop29h 50m
Deal found 9/19![Cathay Pacific logo]()
$1,306
This Cathay Pacific 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/277:45 pm -
2 stops33h 45m
Wed 11/112:10 pm -
1 stop29h 50m
Deal found 9/19![Multiple Airlines logo]()
$1,417
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 September 23, 2026.
Search for one-way flight options from Sydney to Illinois. Find affordable one-way fares based on user searches. Data last updated September 23, 2026.
This BYOjet 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 BYOjet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/303:40 pm -
1 stop39h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/22![Etihad Airways logo]()
$714
This Gotogate 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/39:30 pm -
1 stop51h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/21![Etihad Airways logo]()
$725
This Gotogate 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/69:30 pm -
1 stop51h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/22![Etihad Airways logo]()
$727
This SmartFares 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/229:35 pm -
1 stop51h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/22![Etihad Airways logo]()
$728
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.
Sat 11/79:30 pm -
1 stop51h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/19![Etihad Airways logo]()
$734
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.
Thu 10/224:10 pm -
3 stops54h 24m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/22![Multiple Airlines logo]()
$775
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.
Tue 12/158:20 pm -
3 stops45h 34m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/20![Multiple Airlines logo]()
$795
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/68:05 pm -
2 stops35h 32m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/22![Multiple Airlines logo]()
$803
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 11/32:00 pm -
3 stops51h 21m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/21![Multiple Airlines logo]()
$823
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 September 23, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $908 (Trip.com) |
One-way from | $712 (BYOjet) |
Popular in | May |
Cheapest in | October |
Average price | $1,262 |
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 7,457,451 searches. Data last updated September 23, 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
SydneyChicago
SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl
SYDORD
Sydney Kingsford Smith
Sat 11/7
9:30 pm-7:55 am
1 stop51h 25m
Chicago O'Hare Intl
Wed 12/31
12:00 am-4:00 pm
Nonstop0h 00m
$734
SydneyChicago
SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl
SYDORD
Sydney Kingsford Smith
Sat 11/7
6:30 pm-12:30 pm
2 stops35h 00m
Chicago O'Hare Intl
Wed 12/31
12:00 am-4:00 pm
Nonstop0h 00m
$903
SydneyChicago
SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl
SYDORD
Sydney Kingsford Smith
Thu 1/7
11:30 am-4:55 pm
1 stop46h 25m
Chicago O'Hare Intl
Wed 12/31
12:00 am-4:00 pm
Nonstop0h 00m
$1,192
SydneyChicago
SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl
SYDORD
Sydney Kingsford Smith
Mon 11/2
3:15 pm-12:30 pm
1 stop38h 15m
Chicago O'Hare Intl
Mon 11/9
2:10 pm-9:35 am
1 stop26h 25m
$1,278
SydneyChicago
SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl
SYDORD
Sydney Kingsford Smith
Thu 11/5
10:20 pm-12:30 pm
1 stop31h 10m
Chicago O'Hare Intl
Mon 11/9
2:10 pm-8:50 pm
1 stop37h 40m
$1,336
SydneyChicago
SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl
SYDORD
Sydney Kingsford Smith
Mon 11/2
9:05 pm-12:30 pm
2 stops32h 25m
Chicago O'Hare Intl
Mon 11/9
2:10 pm-9:35 am
1 stop26h 25m
$1,414
SydneyChicago
SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl
SYDORD
Sydney Kingsford Smith
Wed 11/4
7:45 pm-12:30 pm
2 stops33h 45m
Chicago O'Hare Intl
Wed 11/11
2:10 pm-8:50 pm
1 stop37h 40m
$1,416
Quickest round-trip
SydneyChicago
SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl
SYDORD
Sydney Kingsford Smith
Fri 12/18
10:40 am-1:33 pm
1 stop19h 53m
Chicago O'Hare Intl
Wed 12/31
12:00 am-4:00 pm
Nonstop0h 00m
$1,417
SydneyChicago
SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl
SYDORD
Sydney Kingsford Smith
Fri 11/6
11:30 am-5:40 am
2 stops35h 10m
Chicago O'Hare Intl
Fri 11/13
10:45 pm-9:50 am
1 stop42h 05m
$1,425
SydneyChicago
SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl
SYDORD
Sydney Kingsford Smith
Thu 11/5
7:45 pm-12:30 pm
2 stops33h 45m
Chicago O'Hare Intl
Thu 11/12
2:10 pm-1:00 pm
1 stop29h 50m
$1,454
Showing 1-10 of 11 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-ORD
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-ORD
What is the cheapest month to book a flight from Sydney to Illinois?
Currently, October is the cheapest month in which you can book a flight from Sydney to Illinois (average of $1,053). Flying from Sydney to Illinois in May is currently the most expensive (average of $1,432). 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?
Airfare is below average for this route at the moment.
Sydney to Illinois flights typically cost between $1,158 and $1,482 in November.The cheapest round-trip price found within the last 5 days was $908 on Multiple Airlines (Nov 2-Nov 9).
How far ahead should I book a flight from Sydney to Illinois?
Booking 87 days in advance of your planned departure date is, on average, the best time to get cheap flights from Sydney to Illinois. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
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 September 23, 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.
Boarding
7.7
Overall
7.5
Entertainment
7.2
Crew
8.1
Comfort
7.4
Food
7.0
Reviews
1 / 20
10.0
ExcellentTania,May 2026
SYD - DFW
Boarding
7.7
Overall
7.5
Entertainment
7.2
Crew
8.1
Comfort
7.4
Food
7.0
Reviews
1 / 20
10.0
ExcellentTania,May 2026
SYD - DFW
Boarding
7.7
Overall
7.5
Entertainment
7.2
Crew
8.1
Comfort
7.4
Food
7.0
Reviews
1 / 20
10.0
ExcellentTania,May 2026
SYD - DFW
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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Complete your trip
Complete your trip to Illinois by adding a car rental and/or hotel reservation to your travel itinerary.
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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 September 23, 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 airline flying from Sydney to Illinois
Discover the top airline 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 7,457,451 searches. Data last updated September 23, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$970 | Average$1,633 | FlexibilityNo cancel fee | On-time74% |