$118+ 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
15 Mar — 22 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 13 February 2026.

Good round-trip deal

$245 or less

Good one-way deal

$96 or less
Price to beat on a round-trip flight from Illinois.
Search Deals
Price to beat on a one-way flight from Illinois.
Search Deals

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 13 February 2026.

Tue 3/316:13
STL
-
SYD
2 stops35h 37m
Qantas Airways
Tue 10/311:20
SYD
-
STL
1 stop28h 38m
Qantas Airways
Deal found 10/2$1,262
Thu 19/316:13
STL
-
SYD
2 stops36h 37m
Qantas Airways
Wed 25/311:20
SYD
-
STL
1 stop28h 38m
Qantas Airways
Deal found 11/2$1,263
Fri 27/206:38
STL
-
SYD
1 stop33h 22m
Qantas Airways
Mon 9/317:50
SYD
-
STL
2 stops37h 38m
Qantas Airways
Deal found 11/2$1,276
Thu 7/519:21
ORD
-
BNE
1 stop42h 39m
Multiple Airlines
Mon 25/511:55
BNE
-
ORD
2 stops33h 51m
Multiple Airlines
Deal found 9/2$1,311
Thu 26/213:24
ORD
-
SYD
1 stop26h 36m
Qantas Airways
Tue 3/307:05
SYD
-
ORD
2 stops24h 48m
Qantas Airways
Deal found 10/2$1,327
Mon 23/216:45
ORD
-
SYD
1 stop21h 40m
Qantas Airways
Tue 3/307:05
SYD
-
ORD
2 stops24h 48m
Qantas Airways
Deal found 11/2$1,338
Wed 18/316:49
ORD
-
MEL
2 stops47h 31m
Qantas Airways
Fri 10/409:45
MEL
-
ORD
1 stop22h 10m
Qantas Airways
Deal found 12/2$1,339
Thu 19/314:58
ORD
-
MEL
2 stops39h 47m
Qantas Airways
Thu 9/409:45
MEL
-
ORD
1 stop22h 56m
Qantas Airways
Deal found 10/2$1,344
Sat 28/216:49
ORD
-
SYD
2 stops45h 46m
Qantas Airways
Fri 6/311:20
SYD
-
ORD
1 stop20h 33m
Qantas Airways
Deal found 11/2$1,348
Sun 22/316:05
STL
-
BNE
2 stops48h 40m
Multiple Airlines
Wed 29/410:00
BNE
-
STL
2 stops21h 56m
Multiple Airlines
Deal found 10/2$1,351
Mon 11/506:00
ORD
-
SYD
1 stop34h 30m
Multiple Airlines
Mon 25/513:15
SYD
-
ORD
2 stops32h 31m
Multiple Airlines
Deal found 9/2$1,351
Wed 4/313:15
ORD
-
SYD
2 stops38h 35m
Qantas Airways
Sun 15/311:20
SYD
-
ORD
1 stop19h 33m
Qantas Airways
Deal found 10/2$1,352

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

Fly to

Melbourne

Route

Depart

Return

Price

St. LouisBrisbane

STL - BNE

STLBNE

Lambert-St Louis

Sun 22/3

16:05-07:45

2 stops48h 40m

Brisbane

Wed 29/4

10:00-16:56

2 stops21h 56m

$1,351

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Wed 15/4

08:42-07:05

2 stops31h 23m

Brisbane

Sun 19/4

10:00-14:43

1 stop19h 43m

$1,355

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Tue 21/4

08:50-07:05

1 stop31h 15m

Brisbane

Tue 28/4

10:00-14:43

1 stop19h 43m

$1,355

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Tue 3/3

16:45-07:30

2 stops46h 45m

Brisbane

Tue 10/3

19:40-23:47

1 stop19h 07m

$1,362

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Sun 22/3

15:35-11:30

2 stops28h 55m

Brisbane

Wed 29/4

10:00-17:01

2 stops46h 01m

$1,389

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Sun 22/3

13:55-11:30

3 stops30h 35m

Brisbane

Wed 29/4

10:00-20:05

2 stops25h 05m

$1,393

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Mon 4/5

15:40-07:05

1 stop24h 25m

Brisbane

Thu 14/5

10:00-14:45

1 stop19h 45m

$1,415

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Thu 7/5

18:03-07:05

2 stops46h 02m

Brisbane

Sun 24/5

10:00-14:45

1 stop19h 45m

$1,418

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Fri 20/3

07:15-07:45

2 stops33h 30m

Brisbane

Sun 19/4

10:00-20:05

2 stops25h 05m

$1,429

ChicagoBrisbane

ORD - BNE

ORDBNE

Chicago O'Hare Intl

Tue 24/2

15:35-08:45

1 stop25h 10m

Brisbane

Wed 11/3

09:45-20:00

1 stop25h 15m

$1,445

Flights are sorted by cheapest return flights first.

Deals found on 12/2

Showing 1-10 of 60 results
1
2
3
...
6

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 $507). Flying from Illinois in January will prove the most costly (average of $1,349). 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 $655
Spirit Airlines
Spirit Airlines
From $81
United Airlines
United Airlines
From $302

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 $183

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.

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 13 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 $1,099 round trip
    Fly from Chicago to Melbourne from $1,155 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!

See more FAQs

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!

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.