Can I find cheaper flights to Illinois if I am willing to have stopovers?

Yes, flights with stopovers are often cheaper than direct flights. Keep an eye out for flight deals to Illinois on Cheapflights that require 1 or 2 stops for potential cost savings.

What is the best airline to fly to Illinois?

Based on reviews from Cheapflights users, American Airlines is rated the highest out of the airlines that fly to Illinois.

What is the cheapest airport to fly to in Illinois?

Chicago Midway is currently the cheapest airport to fly to in Illinois. One-way flights to Chicago Midway typically cost $152, while return flights cost around $211.

How much is a return flight to Illinois?

A return flight to Illinois will typically cost around $402, however they can be found for as little as $211.

Where does the fastest flight to Illinois depart from?

For those looking to save time traveling to Illinois, Brisbane offers the quickest one-way flight (21 hours 59 minutes).

Does Chicago O'Hare Intl have car hire?

Yes. Those touching down at Chicago O'Hare Intl can take advantage of the car hire services offered upon their arrival.

Are there hotels close to Chicago O'Hare Intl?

Yes. Chicago O'Hare Intl has hotels nearby for those requiring accommodations. Hilton Chicago O'Hare Airport is the closest property to Chicago O'Hare Intl (0.0 km away from Chicago O'Hare Intl).

$182+ Cheap Flights to Illinois

Flights to Illinois in 2026

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

One-way

Cheapest flights to Illinois
Explore the most affordable flight options available to Illinois. Find the lowest fares based on data from user searches, with prices last updated on 16 September 2026.

Wed 28/1010:20 -

1 stop25h 41m

Tue 24/1110:37 -

2 stops29h 58m

Deal found 11/9$1,300

Mon 5/1010:20 -

1 stop25h 46m

Mon 19/1015:40 -

1 stop24h 40m

Deal found 13/9$1,303

Thu 1/1009:20 -

1 stop22h 25m

Mon 26/1008:49 -

1 stop31h 46m

Deal found 12/9$1,324

Mon 19/1010:20 -

2 stops25h 52m

Mon 2/1113:55 -

2 stops26h 40m

Deal found 11/9$1,331

Thu 22/1010:20 -

1 stop22h 25m

Mon 26/1015:30 -

1 stop25h 05m

Deal found 14/9$1,361

Mon 12/1010:20 -

1 stop20h 23m

Mon 19/1015:40 -

1 stop24h 40m

Deal found 13/9$1,362

Mon 19/1010:20 -

2 stops38h 40m

Wed 28/1007:05 -

2 stops33h 30m

Deal found 14/9$1,366

Sun 15/1111:20 -

2 stops45h 06m

Sun 29/1116:05 -

2 stops48h 30m

Deal found 13/9$1,537

Wed 21/1010:20 -

2 stops29h 24m

Sat 24/1008:55 -

2 stops31h 40m

Deal found 13/9$1,578

Wed 21/1010:10 -

1 stop29h 36m

Sat 24/1019:10 -

2 stops24h 35m

Deal found 13/9$1,589

Sun 20/909:15 -

2 stops23h 22m

Mon 28/914:30 -

2 stops25h 20m

Deal found 11/9$1,652

Mon 28/909:10 -

2 stops29h 34m

Tue 13/1006:21 -

2 stops33h 09m

Deal found 14/9$1,804

Best flights to Illinois
Discover carefully curated flight deals to Illinois that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 16 September 2026.

Mon 5/1010:20 -

2 stops37h 31m

Mon 19/1008:49 -

1 stop31h 31m

Deal found 11/9$1,399

Wed 21/1010:10 -

2 stops43h 34m

Sat 24/1015:20 -

1 stop23h 35m

Deal found 15/9$1,619

Sun 20/909:15 -

2 stops23h 22m

Mon 28/914:30 -

2 stops25h 20m

Deal found 11/9$1,652

Thu 5/1122:20 -

1 stop31h 10m

Mon 9/1114:10 -

1 stop37h 40m

Deal found 14/9$1,874

Sat 31/1009:55 -

2 stops26h 42m

Sat 7/1114:30 -

2 stops25h 05m

Deal found 15/9$2,002

Sat 31/1015:15 -

1 stop38h 15m

Sat 7/1114:10 -

2 stops35h 20m

Deal found 15/9$2,023

Tue 6/1022:05 -

2 stops36h 10m

Wed 21/1020:10 -

2 stops32h 00m

Deal found 15/9$2,222

Wed 21/1015:50 -

2 stops38h 40m

Sat 24/1006:02 -

2 stops45h 18m

Deal found 15/9$2,538

Sun 15/1111:20 -

2 stops45h 06m

Sun 29/1116:05 -

2 stops48h 30m

Deal found 13/9$1,537

Sun 20/909:10 -

1 stop29h 20m

Mon 28/906:30 -

1 stop33h 35m

Deal found 11/9$1,681

Wed 21/1010:20 -

2 stops29h 24m

Sat 24/1008:00 -

3 stops32h 35m

Deal found 11/9$1,609

Wed 9/1210:40 -

2 stops29h 46m

Sat 2/111:15 -

2 stops28h 15m

Deal found 12/9$2,190

Fri 23/1020:45 -

3 stops24h 55m

Fri 30/1019:16 -

2 stops32h 29m

Deal found 13/9$2,200

Thu 5/1121:35 -

2 stops54h 25m

Mon 9/1120:15 -

2 stops54h 10m

Deal found 14/9$2,271

Mon 5/1011:10 -

1 stop42h 45m

Mon 19/1016:15 -

2 stops33h 45m

Deal found 11/9$2,341

Tue 27/1021:40 -

3 stops33h 13m

Thu 12/1114:07 -

2 stops36h 38m

Deal found 13/9$2,204

Sat 21/1110:40 -

2 stops22h 59m

Sat 5/1210:24 -

2 stops29h 06m

Deal found 14/9$2,598

Wed 21/1022:05 -

3 stops39h 16m

Sat 24/1008:00 -

3 stops67h 25m

Deal found 15/9$2,661

Tue 27/1009:40 -

2 stops22h 34m

Wed 11/1113:31 -

2 stops25h 59m

Deal found 15/9$2,748

Tue 27/1009:40 -

2 stops24h 20m

Tue 3/1112:27 -

2 stops27h 03m

Deal found 11/9$2,759

Thu 29/1009:40 -

2 stops23h 07m

Thu 5/1112:27 -

2 stops27h 03m

Deal found 14/9$2,835

Fri 23/1010:15 -

2 stops22h 32m

Fri 30/1010:59 -

2 stops28h 31m

Deal found 13/9$2,912

Mon 5/1010:15 -

2 stops24h 04m

Mon 19/1012:49 -

2 stops27h 01m

Deal found 13/9$2,912

Sat 31/1009:40 -

2 stops24h 20m

Sat 14/1113:31 -

2 stops25h 59m

Deal found 11/9$2,918

Thu 1/1009:15 -

2 stops28h 29m

Sat 17/1013:27 -

2 stops26h 23m

Deal found 16/9$2,996

Find flights to Illinois

Explore Illinois

Look for other cheap flights to Chicago

Look for other cheap flights to Moline

Find flight deals to Illinois

Return from	$1,300
One-way from	$182
Popular in	May
Cheapest in	October
Average price	$1,770

Air Canada
28/10-24/11
3 total stops
55h 39m total
Sydney to Chicago

Search Deals

Qantas Airways
22/10-31/12
1 total stop
22h 41m total
Sydney to Illinois

Search Deals

Highest demand for flights based on searches. 7% potential increase in price ($154 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($49 potential savings vs. average return price).

Search Deals

Average for return flights in September 2026

Search Deals

Fly from

Route

Depart

Return

Price

Cheapest return flight

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Sat 7/11

21:30-07:55

1 stop51h 25m

Chicago O'Hare Intl

Wed 31/12

00:00-16:00

Nonstop0h 00m

$1,039

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Mon 5/10

10:20-07:51

2 stops37h 31m

Chicago O'Hare Intl

Mon 19/10

08:49-08:20

1 stop31h 31m

$1,399

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Sun 15/11

11:20-15:26

2 stops45h 06m

Lambert-St Louis

Sun 29/11

16:05-09:35

2 stops48h 30m

$1,537

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Wed 21/10

10:20-23:44

2 stops29h 24m

Lambert-St Louis

Sat 24/10

08:00-08:35

3 stops32h 35m

$1,609

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Wed 21/10

10:10-13:44

2 stops43h 34m

Lambert-St Louis

Sat 24/10

15:20-06:55

1 stop23h 35m

$1,619

Fastest return journey

SydneyMoline

SYD Sydney Kingsford Smith - MLI Moline Quad-City

SYDMLI

Sydney Kingsford Smith

Thu 17/12

09:20-17:56

2 stops25h 36m

Moline Quad-City

Wed 31/12

00:00-16:00

Nonstop0h 00m

$1,631

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Sun 20/9

09:15-17:37

2 stops23h 22m

Lambert-St Louis

Mon 28/9

14:30-06:50

2 stops25h 20m

$1,652

SydneySt. Louis

SYD Sydney Kingsford Smith - STL Lambert-St Louis

SYDSTL

Sydney Kingsford Smith

Sun 20/9

09:10-23:30

1 stop29h 20m

Lambert-St Louis

Mon 28/9

06:30-07:05

1 stop33h 35m

$1,681

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Thu 5/11

22:20-12:30

1 stop31h 10m

Chicago O'Hare Intl

Mon 9/11

14:10-20:50

1 stop37h 40m

$1,874

SydneyChicago

SYD Sydney Kingsford Smith - ORD Chicago O'Hare Intl

SYDORD

Sydney Kingsford Smith

Sat 31/10

09:55-20:37

2 stops26h 42m

Chicago O'Hare Intl

Sat 7/11

14:30-08:35

2 stops25h 05m

$2,002

Flights are sorted by cheapest return flights first.

Deals found on 13/9

Showing 1-10 of 27 resultsSorted by cheapest first

Best time to book a flight to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois with our price prediction graph.

SYD-ORD

SYD-MLI

SYD-STL

SYD-MDW

Estimated return 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 to Illinois

SYD-USIL

SYD-ORD

SYD-MLI

SYD-STL

SYD-MDW

How long is the flight to Illinois?

On average, a flight from Sydney to Illinois takes 26 hours 57 minutes. Flights to Illinois from other popular cities in Australia will vary in length. Below are a few examples of popular routes and their flight times.

What are the most popular airlines that fly to Illinois?

The most popular airlines flying from Sydney to Illinois are Qantas Airways, Air Canada and United Airlines.

What are the cheapest airlines that fly to Illinois?

The cheapest airlines flying from Sydney to Illinois are American Airlines, Air Canada and Air New Zealand.

Rainfall in Illinois by month

In terms of precipitation, rainfall in Illinois ranges from 43.0 - 125.0 mm per month. August is typically the wettest month, when rainfall can reach 125.0 mm. January is typically the driest time to visit Illinois when rainfall is around 43.0 mm.

Temperature in Illinois by month

If weather is an important factor for your trip to Illinois, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -5.0 C).

When is the best time to book a flight to Illinois?

To ensure you get the cheapest price possible for a flight to Illinois, you should look to book at least 87 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

Reviews of airlines servicing Illinois

Read through reviews of airlines serving the United States, such as Air New Zealand,Qantas Airways, andUnited Airlines. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Air New Zealand

8.0

Very Good

669 reviews

Check prices

Reviews

1 / 20

6.0

Good

Anonymous,Aug 2026

FLL - IAH

All good. Problem was delay caused by weather in Houston creating anxiety about my AirNZ connection. Nothing that United could do about that, and in fairness th captain kept us very well informed

Air New Zealand

8.0

Very Good

669 reviews

Air New Zealand

8.0

Very Good

669 reviews

Check prices

Reviews

1 / 20

6.0

Good

Anonymous,Aug 2026

FLL - IAH

All good. Problem was delay caused by weather in Houston creating anxiety about my AirNZ connection. Nothing that United could do about that, and in fairness th captain kept us very well informed

Qantas Airways

7.5

Good

1,099 reviews

Air New Zealand

8.0

Very Good

669 reviews

Check prices

Reviews

1 / 20

6.0

Good

Anonymous,Aug 2026

FLL - IAH

All good. Problem was delay caused by weather in Houston creating anxiety about my AirNZ connection. Nothing that United could do about that, and in fairness th captain kept us very well informed

United Airlines

7.4

Good

10,214 reviews

Air New Zealand

8.0

Very Good

669 reviews

Check prices

Reviews

1 / 20

6.0

Good

Anonymous,Aug 2026

FLL - IAH

All good. Problem was delay caused by weather in Houston creating anxiety about my AirNZ connection. Nothing that United could do about that, and in fairness th captain kept us very well informed

American Airlines

7.1

Good

12,063 reviews

Air New Zealand

8.0

Very Good

669 reviews

Check prices

Reviews

1 / 20

6.0

Good

Anonymous,Aug 2026

FLL - IAH

All good. Problem was delay caused by weather in Houston creating anxiety about my AirNZ connection. Nothing that United could do about that, and in fairness th captain kept us very well informed

Air Canada

7.1

Good

11,635 reviews

Air New Zealand

8.0

Very Good

669 reviews

Check prices

Reviews

1 / 20

6.0

Good

Anonymous,Aug 2026

FLL - IAH

All good. Problem was delay caused by weather in Houston creating anxiety about my AirNZ connection. Nothing that United could do about that, and in fairness th captain kept us very well informed

FAQs about flying to Illinois

Can I find cheaper flights to Illinois if I am willing to have stopovers?
Yes, flights with stopovers are often cheaper than direct flights. Keep an eye out for flight deals to Illinois on Cheapflights that require 1 or 2 stops for potential cost savings.
What is the best airline to fly to Illinois?
Based on reviews from Cheapflights users, American Airlines is rated the highest out of the airlines that fly to Illinois.
What is the cheapest airport to fly to in Illinois?
Chicago Midway is currently the cheapest airport to fly to in Illinois. One-way flights to Chicago Midway typically cost $152, while return flights cost around $211.
How much is a return flight to Illinois?
A return flight to Illinois will typically cost around $402, however they can be found for as little as $211.
Where does the fastest flight to Illinois depart from?
For those looking to save time traveling to Illinois, Brisbane offers the quickest one-way flight (21 hours 59 minutes).
Does Chicago O'Hare Intl have car hire?
Yes. Those touching down at Chicago O'Hare Intl can take advantage of the car hire services offered upon their arrival.
Are there hotels close to Chicago O'Hare Intl?
Yes. Chicago O'Hare Intl has hotels nearby for those requiring accommodations. Hilton Chicago O'Hare Airport is the closest property to Chicago O'Hare Intl (0.0 km away from Chicago O'Hare Intl).

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Top Illinois destinations

Popular flights to Illinois cities

Complete your trip

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Popular routes from Illinois

Flights by cabin class

Popular flights

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Popular routes

Popular United States flight routes

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Find flights to Illinois

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Flights to Midway

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How does Cheapflights help users find flights to Illinois?

Cheapflights helps you search for flights to Illinois via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets to Illinois?

Cheapflights helps you find that perfect flight to Illinois by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights to Illinois with no change fees?

Certainly. Search results for flights to Illinois shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights to Illinois become cheaper?

Yes! Start tracking prices for Illinois flights today and get alerted when prices change. To subscribe and begin receiving alerts, click the bell icon next to the flight deals above and provide your email address.

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$182+ Cheap flights to Illinois

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 22/10. Fares are subject to change and may not be available on all flights or dates of travel.

Flights to Illinois in 2026

Cheapest flights to IllinoisExplore the most affordable flight options available to Illinois. Find the lowest fares based on data from user searches, with prices last updated on 16 September 2026.

Explore the most affordable flight options available to Illinois. Find the lowest fares based on data from user searches, with prices last updated on 16 September 2026.

Best flights to IllinoisDiscover carefully curated flight deals to Illinois that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 16 September 2026.

Discover carefully curated flight deals to Illinois that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 16 September 2026.

Last-minute flights to IllinoisDiscover last-minute flight deals to Illinois. Data last updated 16 September 2026 and is based on user searches.

Discover last-minute flight deals to Illinois. Data last updated 16 September 2026 and is based on user searches.

One-way flights to IllinoisSearch for one-way flight options to Illinois. Find affordable one-way fares based on user searches. Data last updated 16 September 2026.

Search for one-way flight options to Illinois. Find affordable one-way fares based on user searches. Data last updated 16 September 2026.

Find flights to Illinois

Browse one-way and return flights deals to Illinois on Cheapflights. Flight deals are based on user searches and were last updated on 16 September 2026

Explore Illinois

Find flight deals to Illinois

Return from

One-way from

Popular in

Cheapest in

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Use the filters below to find and compare flights to Illinois that are best for you.

Best time to book a flight to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois with our price prediction graph.

Cheapflights Insights

How long is the flight to Illinois?

On average, a flight from Sydney to Illinois takes 26 hours 57 minutes. Flights to Illinois from other popular cities in Australia will vary in length. Below are a few examples of popular routes and their flight times.

What are the most popular airlines that fly to Illinois?

The most popular airlines flying from Sydney to Illinois are Qantas Airways, Air Canada and United Airlines.

What are the cheapest airlines that fly to Illinois?

The cheapest airlines flying from Sydney to Illinois are American Airlines, Air Canada and Air New Zealand.

Rainfall in Illinois by month

Plan your trip to Illinois by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Illinois ranges from 43.0 - 125.0 mm per month. August is typically the wettest month, when rainfall can reach 125.0 mm. January is typically the driest time to visit Illinois when rainfall is around 43.0 mm.

Temperature in Illinois by month

Plan your trip to Illinois by taking into account the average temperature totals by month.

When is the best time to book a flight to Illinois?

To ensure you get the cheapest price possible for a flight to Illinois, you should look to book at least 87 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

Reviews of airlines servicing Illinois

Read through reviews of airlines serving the United States, such as Air New Zealand,Qantas Airways, andUnited Airlines. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

FAQs about flying to Illinois

Can I find cheaper flights to Illinois if I am willing to have stopovers?

What is the best airline to fly to Illinois?

What is the cheapest airport to fly to in Illinois?

How much is a return flight to Illinois?

Where does the fastest flight to Illinois depart from?

Does Chicago O'Hare Intl have car hire?

Are there hotels close to Chicago O'Hare Intl?

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.

Find flights to Illinois

Select your preferred flight destination in Illinois from the list below.

Domestic flights to Illinois

The most popular flights to Illinois we’ve come across at this time.

Complete your trip

Complete your trip to Illinois by booking a hire car and/or hotel room.

Popular places in United States

Not sure where to visit in United States? Start by selecting one of the most popular places in United States below to filter down your possible destination.

Popular flight routes departing from Illinois

Check out these popular flight routes departing from from Illinois. Flights updated 16 September 2026.

Search flights to Illinois by cabin class

Find flights to Illinois, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Popular flight searches

Check out other popular destinations found by fellow travellers in 2026

Browse our most popular destinations

Most traveled routes by our users

Popular United States flight routes

Browse through the most popular flight routes to the United States at this time.

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How does Cheapflights help users find flights to Illinois?

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Can Cheapflights find flights to Illinois with no change fees?

Can Cheapflights notify me if prices for flights to Illinois become cheaper?

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Cheapest flights to Illinois
Explore the most affordable flight options available to Illinois. Find the lowest fares based on data from user searches, with prices last updated on 16 September 2026.

Best flights to Illinois
Discover carefully curated flight deals to Illinois that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 16 September 2026.

Last-minute flights to Illinois
Discover last-minute flight deals to Illinois. Data last updated 16 September 2026 and is based on user searches.

One-way flights to Illinois
Search for one-way flight options to Illinois. Find affordable one-way fares based on user searches. Data last updated 16 September 2026.