$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
22 Mar — 29 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 20 February 2026.

Good round-trip deal

$247 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 20 February 2026.

Tue 21/415:40
ORD
-
BNE
1 stop24h 25m
Air Canada
Wed 29/410:00
BNE
-
ORD
1 stop19h 43m
Air Canada
Deal found 19/2$1,261
Wed 15/408:40
ORD
-
BNE
2 stops31h 25m
Air Canada
Wed 29/410:00
BNE
-
ORD
2 stops25h 05m
Air Canada
Deal found 17/2$1,275
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$1,290
Sun 12/412:50
ORD
-
BNE
2 stops27h 15m
Air New Zealand
Wed 15/410:00
BNE
-
ORD
2 stops21h 35m
Air New Zealand
Deal found 18/2$1,290
Tue 9/615:40
ORD
-
BNE
1 stop24h 25m
Air Canada
Thu 9/710:00
BNE
-
ORD
1 stop19h 41m
Air Canada
Deal found 19/2$1,302
Wed 22/415:40
ORD
-
BNE
1 stop24h 25m
Air Canada
Thu 30/410:00
BNE
-
ORD
1 stop19h 43m
Air Canada
Deal found 19/2$1,315
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$1,321
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$1,322
Thu 19/316:49
ORD
-
MEL
2 stops37h 56m
Qantas Airways
Fri 10/409:45
MEL
-
ORD
1 stop22h 10m
Qantas Airways
Deal found 18/2$1,351
Thu 19/316:49
ORD
-
MEL
2 stops37h 56m
Qantas Airways
Wed 8/409:45
MEL
-
ORD
1 stop22h 56m
Qantas Airways
Deal found 17/2$1,352
Sat 2/513:00
STL
-
SYD
2 stops51h 20m
Air Canada
Tue 12/509:20
SYD
-
STL
2 stops25h 45m
Air Canada
Deal found 18/2$1,358
Sat 7/316:49
ORD
-
SYD
2 stops47h 21m
Qantas Airways
Sat 14/311:20
SYD
-
ORD
1 stop19h 33m
Qantas Airways
Deal found 17/2$1,362

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 20 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

$1,321

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Wed 22/4

12:50-07:05

2 stops27h 15m

Brisbane

Thu 30/4

10:00-20:05

2 stops25h 05m

$1,329

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Tue 21/4

08:50-07:05

1 stop31h 15m

Brisbane

Wed 29/4

10:00-20:00

1 stop25h 00m

$1,360

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Mon 13/4

15:40-13:55

2 stops31h 45m

Adelaide

Mon 20/4

21:20-14:43

2 stops31h 53m

$1,420

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Sat 2/5

13:00-07:20

3 stops51h 20m

Sydney Kingsford Smith

Tue 12/5

09:20-20:05

3 stops49h 45m

$1,447

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Tue 2/6

08:40-07:05

2 stops31h 25m

Brisbane

Tue 16/6

10:00-13:07

2 stops42h 07m

$1,458

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Fri 1/5

13:01-11:30

3 stops31h 29m

Brisbane

Sun 10/5

10:00-17:01

2 stops46h 01m

$1,472

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Mon 29/6

20:40-13:55

2 stops50h 45m

Adelaide

Tue 11/8

20:00-14:41

2 stops33h 11m

$1,572

ChicagoAdelaide

ORD - ADL

ORDADL

Chicago O'Hare Intl

Sun 28/6

13:00-13:55

2 stops34h 25m

Adelaide

Tue 11/8

20:00-14:41

2 stops33h 11m

$1,573

ChicagoPerth

ORD - PER

ORDPER

Chicago O'Hare Intl

Mon 20/4

17:45-17:10

2 stops34h 25m

Perth

Wed 6/5

09:40-14:55

2 stops42h 15m

$1,586

Flights are sorted by cheapest return flights first.

Deals found on 16/2

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 $512). Flying from Illinois in January will prove the most costly (average of $1,360). 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 $660
Spirit Airlines
Spirit Airlines
From $82
United Airlines
United Airlines
From $304

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 $165
Boston Logan Intl
Boston Logan Intl
From $182
San Diego
San Diego
From $185

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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 20 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 Melbourne from $1,156 round trip
    Fly from Chicago to Sydney from $1,158 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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