$119+ 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 2/3. 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
19 Mar — 26 Mar1
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 17 February 2026.

Good round-trip deal

$246 or less

Good one-way deal

$96 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 17 February 2026.

Mon 23/318:50
STL
-
SYD
2 stops34h 00m
Qantas Airways
Tue 7/417:50
SYD
-
STL
1 stop21h 07m
Qantas Airways
Deal found 16/2$1,285
Tue 2/615:40
ORD
-
BNE
1 stop24h 25m
Air Canada
Fri 5/610:00
BNE
-
ORD
1 stop19h 45m
Air Canada
Deal found 16/2$1,316
Fri 3/415:40
ORD
-
BNE
1 stop24h 25m
Air Canada
Wed 15/410:00
BNE
-
ORD
1 stop19h 43m
Air Canada
Deal found 16/2$1,318
Thu 19/316:49
ORD
-
MEL
2 stops37h 56m
Qantas Airways
Sat 11/409:45
MEL
-
ORD
1 stop22h 10m
Qantas Airways
Deal found 17/2$1,347
Tue 21/408:42
ORD
-
BNE
2 stops31h 23m
Air Canada
Wed 29/410:00
BNE
-
ORD
1 stop19h 43m
Air Canada
Deal found 16/2$1,356
Sat 28/216:49
ORD
-
SYD
2 stops47h 21m
Qantas Airways
Fri 6/311:20
SYD
-
ORD
1 stop20h 33m
Qantas Airways
Deal found 14/2$1,357
Sat 7/314:58
ORD
-
SYD
2 stops49h 12m
Qantas Airways
Sat 14/311:20
SYD
-
ORD
1 stop19h 33m
Qantas Airways
Deal found 14/2$1,359
Tue 2/608:40
ORD
-
BNE
2 stops31h 25m
Air Canada
Tue 16/610:00
BNE
-
ORD
1 stop19h 45m
Air Canada
Deal found 14/2$1,363
Sun 17/508:45
ORD
-
BNE
2 stops31h 20m
Air Canada
Sun 7/610:00
BNE
-
ORD
2 stops42h 07m
Air Canada
Deal found 15/2$1,367
Thu 19/316:49
ORD
-
MEL
2 stops37h 56m
Qantas Airways
Fri 10/409:45
MEL
-
ORD
1 stop22h 10m
Qantas Airways
Deal found 17/2$1,368
Wed 25/313:14
ORD
-
SYD
2 stops39h 36m
Qantas Airways
Tue 7/421:25
SYD
-
ORD
1 stop23h 20m
Qantas Airways
Deal found 13/2$1,368
Thu 2/415:45
ORD
-
BNE
2 stops48h 20m
Air Canada
Thu 9/410:00
BNE
-
ORD
1 stop19h 43m
Air Canada
Deal found 16/2$1,373

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 17 February 2026. In the last 7 days, Cheapflights users made a total of 647,157 searches

Fly to

Melbourne

Route

Depart

Return

Price

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Tue 2/6

15:40-07:05

1 stop24h 25m

Brisbane

Fri 5/6

10:00-14:45

1 stop19h 45m

$1,316

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Mon 30/3

15:40-07:05

1 stop24h 25m

Brisbane

Wed 15/4

10:00-14:43

1 stop19h 43m

$1,356

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Tue 21/4

08:42-07:05

2 stops31h 23m

Brisbane

Wed 29/4

10:00-20:05

2 stops25h 05m

$1,361

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Sun 24/5

15:40-07:05

1 stop24h 25m

Brisbane

Tue 2/6

10:00-17:05

2 stops22h 05m

$1,363

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Mon 13/4

15:40-11:50

2 stops29h 40m

Adelaide

Mon 20/4

21:20-20:00

2 stops37h 10m

$1,419

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Mon 13/4

08:42-07:05

2 stops31h 23m

Brisbane

Thu 14/5

10:00-19:58

1 stop24h 58m

$1,424

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Mon 30/3

15:40-11:00

2 stops28h 20m

Brisbane

Wed 15/4

10:00-14:43

1 stop19h 43m

$1,433

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Thu 7/5

18:03-07:05

2 stops46h 02m

Brisbane

Mon 25/5

10:00-07:50

2 stops36h 50m

$1,433

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Wed 1/4

15:40-12:35

2 stops29h 25m

Adelaide

Wed 8/4

21:20-14:43

2 stops31h 53m

$1,490

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Tue 3/3

06:38-07:35

2 stops55h 57m

Sydney Kingsford Smith

Tue 10/3

11:20-23:58

1 stop28h 38m

$1,500

Flights are sorted by cheapest return flights first.

Deals found on 14/2

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 $510). Flying from Illinois in January will prove the most costly (average of $1,356). 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 $658
Spirit Airlines
Spirit Airlines
From $82
United Airlines
United Airlines
From $303

What is the cheapest place to fly to from Illinois?

The cheapest city to fly to from Illinois is Toronto, with prices starting at $96. Explore other affordable destinations below.

Toronto
Toronto
From $96
Memphis
Memphis
From $164
Boston Logan Intl
Boston Logan Intl
From $181
San Diego
San Diego
From $184

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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 17 February 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 Sydney from $1,152 round trip
    Fly from Chicago to Melbourne from $1,161 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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