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$660+ Cheap flights 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 10/3. Fares are subject to change and may not be available on all flights or dates of travel.
— ORD
22 Dec — 29 Dec1
1 adult

Find flights to Illinois within your budget

Locate flights to Illinois that fit your budget, with regularly updated fares and availability. In the last 7 days, Cheapflights users made a total of 647,157 searches and data was last updated on 17 December 2024.

Fly from

Any airport

Route

Depart

Return

Price

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Thu 23/1

11:20-19:55

2 stops25h 35m

Chicago O'Hare Intl

Wed 5/2

07:20-09:35

2 stops33h 15m

$1,594

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 10/2

11:20-15:06

2 stops44h 46m

Lambert-St Louis

Mon 17/2

15:50-09:35

2 stops48h 45m

$1,682

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Mon 20/1

07:05-14:39

2 stops24h 34m

Chicago O'Hare Intl

Thu 30/1

15:40-09:35

1 stop24h 55m

$1,910

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Tue 14/1

11:15-15:59

1 stop21h 44m

Chicago O'Hare Intl

Tue 25/2

17:40-09:00

1 stop22h 20m

$2,002

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 10/2

12:10-18:09

1 stop22h 59m

Lambert-St Louis

Mon 17/2

16:30-07:00

1 stop21h 30m

$2,060

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Thu 23/1

12:25-19:59

2 stops48h 34m

Chicago O'Hare Intl

Wed 5/2

16:25-10:30

1 stop25h 05m

$2,122

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Mon 13/1

11:20-23:19

2 stops28h 59m

Chicago O'Hare Intl

Sun 19/1

21:05-07:00

1 stop40h 55m

$2,349

SydneyChicago

SYD - MDW

SYDMDW

Sydney Kingsford Smith

Thu 23/1

14:15-22:20

2 stops25h 05m

Chicago Midway

Wed 5/2

14:08-08:35

2 stops25h 27m

$2,363

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Thu 23/1

17:00-13:00

2 stops37h 00m

Chicago O'Hare Intl

Wed 5/2

14:40-17:50

2 stops34h 10m

$2,557

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 10/2

17:25-22:56

2 stops22h 31m

Lambert-St Louis

Mon 17/2

11:57-09:50

3 stops28h 53m

$2,695

Flights are sorted by cheapest return flights first.

Deals found on 16/12

Showing 1-10 of 33 results
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Flights to Illinois in 2024

Find the latest flights to Illinois in 2024, with up-to-date prices and availability. In the last 7 days, Cheapflights users made a total of 647,157 searches and data was last updated on 17 December 2024.

Return from

$1,493

One-way from

$705

Popular in

December

Cheapest in

March

Average price

$2,447
Qantas Airways
  • Qantas Airways
  • 9/6-14/6
  • 2 total stops
  • 80h 52m total
  • Sydney to Chicago
Search Deals
Qantas Airways
  • Qantas Airways
  • 1/6
  • 1 total stop
  • 20h 53m total
  • Sydney to Illinois
Search Deals
High demand for flights, 6% potential price rise
Search Deals
Best time to find cheap flights, 2% potential price drop
Search Deals
Average for return flights in December 2024
Search Deals

Find flight deals to Illinois

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 17 December 2024.

Tue 24/1211:20SYD - ORD
1 stop26h 05mUnited Airlines
Wed 8/109:00ORD - SYD
2 stops28h 20mUnited Airlines
Deal found 16/12$2,500
Tue 24/1211:20SYD - ORD
2 stops46h 31mAir Canada
Sat 11/107:05ORD - SYD
2 stops33h 30mAir Canada
Deal found 16/12$2,524
Wed 18/1212:25SYD - ORD
1 stop35h 55mANA
Sat 28/1207:10ORD - SYD
2 stops34h 20mANA
Deal found 16/12$2,960
Mon 23/1211:15SYD - ORD
1 stop21h 47mQantas Airways
Fri 10/112:39ORD - SYD
1 stop24h 31mQantas Airways
Deal found 16/12$3,529
Wed 25/1217:50SYD - ORD
3 stops52h 22mMultiple Airlines
Sat 4/120:25ORD - SYD
3 stops66h 10mMultiple Airlines
Deal found 16/12$3,871
Mon 30/1212:40SYD - ORD
3 stops51h 30mAir Tahiti Nui
Fri 10/115:20ORD - SYD
3 stops33h 20mAir Tahiti Nui
Deal found 16/12$4,235
Mon 23/1211:05SYD - MDW
2 stops23h 39mDelta
Fri 10/113:26MDW - SYD
2 stops26h 09mDelta
Deal found 16/12$5,098
Sat 28/1215:15SYD - ORD
1 stop38h 45mCathay Pacific
Sat 11/114:40ORD - SYD
1 stop28h 20mCathay Pacific
Deal found 16/12$8,345

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.
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.

Travel insights for flights to Illinois

Get recent, data-driven insights about flights to Illinois including ideal travel times, pricing trends, and more.

How long is the flight to Illinois?

On average, a flight from Sydney to Illinois takes 23 hours 8 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.

When is the cheapest time to fly to Illinois?

Use this chart to determine the cheapest time to fly return from Sydney to Illinois. Price data was last updated on 25 February 2024.

Users looking for the lowest fares to Illinois should consider flying on Monday at midday, when prices are typically cheapest. Budget-minded travellers will want to avoid Sunday evenings, when prices are usually at their highest.

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 ANA.

Qantas Airways

Qantas Airways

From $988

Air Canada

Air Canada

From $887

ANA

ANA

From $866

United Airlines

United Airlines

From $955

What are the cheapest airlines that fly to Illinois?

The cheapest airlines flying from Sydney to Illinois are ANA, 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.

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).

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 17 December 2024.
Get a feel of what it's like to fly with ANA, Japan Airlines and American Airlines to Illinois by reading reviews from past customers. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Air Tahiti Nui
8.6
Very Good
65 reviews
Check prices

Food

7.7

Comfort

8.0

Overall

8.6

Crew

8.9

Entertainment

7.2

Boarding

8.5

Reviews

1 / 2

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.

Air Tahiti Nui
8.6
Very Good
65 reviews
Air Tahiti Nui
8.6
Very Good
65 reviews
Check prices

Food

7.7

Comfort

8.0

Overall

8.6

Crew

8.9

Entertainment

7.2

Boarding

8.5

Reviews

1 / 2

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.

ANA
8.4
Very Good
841 reviews
Air Tahiti Nui
8.6
Very Good
65 reviews
Check prices

Food

7.7

Comfort

8.0

Overall

8.6

Crew

8.9

Entertainment

7.2

Boarding

8.5

Reviews

1 / 2

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.

Japan Airlines
8.3
Very Good
1,442 reviews
Air Tahiti Nui
8.6
Very Good
65 reviews
Check prices

Food

7.7

Comfort

8.0

Overall

8.6

Crew

8.9

Entertainment

7.2

Boarding

8.5

Reviews

1 / 2

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.

Singapore Airlines
8.1
Very Good
1,329 reviews
Air Tahiti Nui
8.6
Very Good
65 reviews
Check prices

Food

7.7

Comfort

8.0

Overall

8.6

Crew

8.9

Entertainment

7.2

Boarding

8.5

Reviews

1 / 2

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.

Delta
8.0
Very Good
8,615 reviews
Air Tahiti Nui
8.6
Very Good
65 reviews
Check prices

Food

7.7

Comfort

8.0

Overall

8.6

Crew

8.9

Entertainment

7.2

Boarding

8.5

Reviews

1 / 2

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.

  • 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 $214, while return flights cost around $451.

  • How much is a return flight to Illinois?

    A return flight to Illinois will typically cost around $287, however they can be found for as little as $287.

  • Where does the fastest flight to Illinois depart from?

    For those looking to save time traveling to Illinois, Sydney Kingsford Smith offers the quickest one-way flight (20 hours 53 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).

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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.

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