$136+ Cheap flights from Illinois

This is the cheapest return flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 27/2. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
ORD — MEL
4 Feb — 11 Feb1
1 adult
1 adult, Economy, 0 bags

What to know about flights from Illinois

Discover essential information about flights departing from Illinois, including flight schedules, destinations, airlines operating at the Illinois airport, and any specific guidelines or requirements for travellers. Please note that the information is based on the most recent updates available. Data last updated 5 January 2026.

Good round-trip deal

$260 or less

Good one-way deal

$102 or less
Price to beat on a round-trip flight from Illinois.
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Price to beat on a one-way flight from Illinois.
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Find flights from Illinois

Enter your travel dates to find the best prices.

Cheapest flights from Illinois
Explore the most affordable flight options available from Illinois. Find the lowest fares based on data from user searches, with prices last updated on 5 January 2026.

Tue 20/118:40ORD - MEL
1 stop21h 50mQantas Airways
Fri 20/206:45MEL - ORD
2 stops26h 52mQantas Airways
Deal found 4/1$1,386
Sun 8/217:10ORD - MEL
2 stops29h 25mQantas Airways
Tue 17/212:00MEL - ORD
1 stop26h 35mQantas Airways
Deal found 4/1$1,387
Sat 14/221:21ORD - MEL
2 stops49h 14mQantas Airways
Sat 21/212:00MEL - ORD
1 stop22h 46mQantas Airways
Deal found 4/1$1,392
Wed 18/206:38STL - MEL
1 stop33h 52mQantas Airways
Wed 25/206:45MEL - STL
2 stops34h 14mQantas Airways
Deal found 4/1$1,392
Thu 22/107:04STL - SYD
1 stop32h 56mQantas Airways
Thu 29/107:05SYD - STL
2 stops33h 54mQantas Airways
Deal found 4/1$1,402
Thu 12/216:45ORD - SYD
1 stop21h 40mQantas Airways
Thu 19/207:05SYD - ORD
2 stops26h 32mQantas Airways
Deal found 3/1$1,408
Sat 17/119:12ORD - SYD
1 stop41h 58mQantas Airways
Mon 9/207:05SYD - ORD
2 stops29h 48mQantas Airways
Deal found 3/1$1,413
Wed 21/118:40ORD - MEL
2 stops44h 40mQantas Airways
Mon 2/212:00MEL - ORD
1 stop21h 49mQantas Airways
Deal found 4/1$1,420
Tue 3/220:00ORD - SYD
1 stop42h 25mQantas Airways
Tue 10/207:05SYD - ORD
2 stops25h 52mQantas Airways
Deal found 4/1$1,422
Sat 21/316:49ORD - MEL
2 stops37h 56mQantas Airways
Wed 8/409:45MEL - ORD
1 stop23h 01mQantas Airways
Deal found 5/1$1,425
Tue 24/219:29ORD - BNE
2 stops29h 46mQantas Airways
Wed 11/319:40BNE - ORD
1 stop19h 07mQantas Airways
Deal found 5/1$1,429
Tue 27/109:02ORD - SYD
1 stop30h 58mQantas Airways
Mon 2/219:15SYD - ORD
2 stops37h 42mQantas Airways
Deal found 3/1$1,431

Find flights from Illinois within your budget

 
Find flights departing from Illinois that match your specified budget. Filter results by price range, allowing you to narrow down options and find flights that fit within your financial constraints. Please note that the search results are based on data from user searches, with fares last updated on 5 January 2026. In the last 7 days, Cheapflights users made a total of 647,157 searches

Fly to

Melbourne

Route

Depart

Return

Price

St. LouisMelbourne

STL - MEL

STLMEL

Lambert-St Louis

Wed 18/2

06:38-09:30

1 stop33h 52m

Melbourne

Wed 25/2

06:45-23:59

2 stops34h 14m

$1,392

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Tue 10/2

07:04-09:00

1 stop32h 56m

Sydney Kingsford Smith

Tue 17/2

07:05-23:59

2 stops33h 54m

$1,402

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Tue 10/2

15:35-08:45

1 stop25h 10m

Brisbane

Sun 22/2

10:45-14:41

1 stop19h 56m

$1,431

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Tue 10/3

15:35-07:45

1 stop25h 10m

Brisbane

Mon 23/3

09:45-20:00

1 stop25h 15m

$1,431

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Sat 14/2

06:38-09:00

1 stop33h 22m

Sydney Kingsford Smith

Thu 26/2

17:50-15:28

2 stops38h 38m

$1,435

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Tue 3/3

16:13-20:50

2 stops35h 37m

Sydney Kingsford Smith

Wed 11/3

11:20-23:59

1 stop28h 39m

$1,435

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Thu 2/4

18:01-07:05

2 stops46h 04m

Brisbane

Sun 12/4

10:00-14:43

1 stop19h 43m

$1,499

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Sat 28/2

12:50-08:45

2 stops27h 55m

Brisbane

Mon 9/3

10:45-17:05

2 stops45h 20m

$1,499

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Tue 2/6

09:00-07:05

2 stops31h 05m

Brisbane

Tue 16/6

10:00-08:05

2 stops37h 05m

$1,531

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Mon 2/2

21:15-08:45

2 stops43h 30m

Brisbane

Wed 11/3

09:45-16:45

2 stops22h 00m

$1,577

Flights are sorted by cheapest return flights first.

Deals found on 4/1

Showing 1-10 of 60 results
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Best time to book a flight from Illinois

Have a flexible travel schedule? Discover the best time to fly from 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 from Illinois

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

What is the cheapest month to book a flight from Illinois?

Currently, September is the cheapest month in which you can book a flight from Illinois (average of $733). Flying from Illinois in January will prove the most costly (average of $1,434). There are multiple factors that influence the price of a flight so comparing airlines, departure airports and times can help keep costs down.

Which airlines fly from Illinois?

When flying from Illinois check dates and pricing for the following: Qantas Airways. As it departs for the following popular destinations: Melbourne.

Qantas Airways
Qantas Airways
From $1,203
Spirit Airlines
Spirit Airlines
From $87
United Airlines
United Airlines
From $321

What is the cheapest place to fly to from Illinois?

The cheapest city to fly to from Illinois is Toronto, with prices starting at $102. Explore other affordable destinations below.

Toronto
Toronto
From $102
Los Angeles
Los Angeles
From $120
Memphis
Memphis
From $174
San Diego
San Diego
From $195

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Direct flights from USA

Book a direct flight from one of these other cities located in USA.
Direct flights from Moline

Related info for your journey

Access useful and relevant information related to your journey from Illinois. This can include details such as airport transportation, visa requirements, travel insurance, luggage regulations, and any other information that can ensure a smooth and hassle-free travel experience. Please note that the information is based on general guidance and may need to be verified with official sources. Data last updated 5 January 2026.

  • What is the cheapest month to fly from Illinois?

    Currently, the cheapest month for flights from Illinois is September. The most expensive month for flights is January. The cheapest prices are shown above but prices will vary according to departure times, airlines, class and how early you book.

  • Where are the cheapest places to fly to from Illinois?

    View the cheapest flight destinations from Illinois:
    Fly from Chicago to Melbourne from $1,277 round trip
    Fly from Chicago to Sydney from $1,323 round trip

  • How does Cheapflights help users find flights from Illinois?

    Deals for flights from Illinois are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose to your preference, such as price, airport, cabin class, and plenty of other options.

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

    Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Illinois for you. Better yet — we are completely free to use.

  • Can Cheapflights find flights from Illinois with no change fees?

    Users can book flights with no change fees policies with our dedicated filters. Book flights from Illinois flexibly with Cheapflights today.

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

    Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and use a valid email address to enable the Price Alerts feature. That’s it!

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Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Illinois?

Deals for flights from Illinois are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose to your preference, such as price, airport, cabin class, and plenty of other options.

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

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Illinois for you. Better yet — we are completely free to use.

Can Cheapflights find flights from Illinois with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Illinois flexibly with Cheapflights today.

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

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and use a valid email address to enable the Price Alerts feature. That’s it!

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