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$126+ Cheap flights from 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 2/10. 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 — SYD
18 Oct — 25 Oct1
1 adult
1 adult, Economy

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 18 September 2025.

Good round-trip deal

$530 or less

Good one-way deal

$87 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

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 18 September 2025.

Wed 15/1007:10ORD - EWR
Nonstop2h 17mUnited Airlines
Wed 22/1006:00EWR - ORD
Nonstop2h 38mUnited Airlines
Deal found 16/9$247
Fri 3/1021:23ORD - EWR
Nonstop2h 22mUnited Airlines
Sun 5/1006:30EWR - ORD
Nonstop2h 35mUnited Airlines
Deal found 16/9$250
Thu 30/1007:15ORD - EWR
Nonstop2h 10mUnited Airlines
Sun 2/1107:18EWR - ORD
Nonstop2h 47mUnited Airlines
Deal found 16/9$252
Sat 18/1013:42ORD - EWR
Nonstop2h 18mUnited Airlines
Mon 27/1021:59EWR - ORD
Nonstop2h 35mUnited Airlines
Deal found 17/9$255
Fri 24/1011:55ORD - EWR
1 stop10h 34mSpirit Airlines
Sun 26/1022:00EWR - ORD
1 stop13h 50mSpirit Airlines
Deal found 16/9$264
Tue 21/1005:20ORD - EWR
1 stop4h 40mDelta
Tue 21/1019:13EWR - ORD
1 stop5h 45mDelta
Deal found 16/9$265
Mon 29/918:44ORD - EWR
1 stop13h 16mSpirit Airlines
Wed 1/1006:02EWR - ORD
1 stop11h 10mSpirit Airlines
Deal found 16/9$267
Sun 19/1006:00ORD - EWR
Nonstop2h 15mUnited Airlines
Tue 21/1014:55EWR - ORD
Nonstop2h 40mUnited Airlines
Deal found 16/9$270
Thu 6/1107:15ORD - EWR
Nonstop2h 10mUnited Airlines
Mon 10/1121:59EWR - ORD
Nonstop2h 35mUnited Airlines
Deal found 17/9$271
Fri 7/1121:08ORD - EWR
Nonstop2h 05mUnited Airlines
Tue 11/1106:00EWR - ORD
Nonstop2h 42mUnited Airlines
Deal found 16/9$273
Thu 20/1106:02ORD - EWR
Nonstop2h 07mUnited Airlines
Mon 24/1110:01EWR - ORD
Nonstop2h 45mUnited Airlines
Deal found 17/9$276
Wed 4/206:00STL - MEL
1 stop34h 30mQantas Airways
Thu 26/206:45MEL - STL
2 stops33h 23mQantas Airways
Deal found 17/9$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 18 September 2025. In the last 7 days, Cheapflights users made a total of 647,157 searches

Fly to

Sydney

Route

Depart

Return

Price

ChicagoNewark

ORD - EWR

ORDEWR

Chicago O'Hare Intl

Wed 1/10

16:00-19:27

Nonstop2h 27m

Newark

Fri 3/10

08:00-09:39

Nonstop2h 39m

$250

ChicagoNewark

ORD - EWR

ORDEWR

Chicago O'Hare Intl

Fri 5/12

21:08-00:13

Nonstop2h 05m

Newark

Sun 7/12

07:00-08:47

Nonstop2h 47m

$253

ChicagoNewark

ORD - EWR

ORDEWR

Chicago O'Hare Intl

Fri 14/11

13:36-16:49

Nonstop2h 13m

Newark

Fri 14/11

21:59-23:34

Nonstop2h 35m

$255

ChicagoNewark

ORD - EWR

ORDEWR

Chicago O'Hare Intl

Mon 6/10

21:23-00:45

Nonstop2h 22m

Newark

Wed 8/10

21:49-23:30

Nonstop2h 41m

$270

ChicagoNewark

ORD - EWR

ORDEWR

Chicago O'Hare Intl

Sat 6/12

12:00-15:12

Nonstop2h 12m

Newark

Sun 7/12

07:00-08:47

Nonstop2h 47m

$270

ChicagoNewark

ORD - EWR

ORDEWR

Chicago O'Hare Intl

Thu 6/11

07:15-10:25

Nonstop2h 10m

Newark

Sun 9/11

07:18-09:05

Nonstop2h 47m

$271

ChicagoNewark

ORD - EWR

ORDEWR

Chicago O'Hare Intl

Thu 6/11

07:15-10:25

Nonstop2h 10m

Newark

Mon 10/11

21:59-23:34

Nonstop2h 35m

$271

ChicagoNewark

ORD - EWR

ORDEWR

Chicago O'Hare Intl

Fri 7/11

21:08-00:13

Nonstop2h 05m

Newark

Tue 11/11

19:29-21:16

Nonstop2h 47m

$273

ChicagoNewark

ORD - EWR

ORDEWR

Chicago O'Hare Intl

Wed 19/11

10:46-15:58

1 stop4h 12m

Newark

Mon 24/11

06:00-10:01

1 stop5h 01m

$280

ChicagoNewark

ORD - EWR

ORDEWR

Chicago O'Hare Intl

Wed 12/11

14:30-19:24

1 stop3h 54m

Newark

Sun 16/11

06:00-10:01

1 stop5h 01m

$280

Flights are sorted by cheapest return flights first.

Deals found on 18/9

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, August is the cheapest month in which you can book a flight from Illinois (average of $297). Flying from Illinois in January will prove the most costly (average of $1,288). 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, Air Canada. As they depart for the following popular destinations: Sydney.

Qantas Airways
Qantas Airways
From $791
Spirit Airlines
Spirit Airlines
From $54
Air Canada
Air Canada
From $831
United Airlines
United Airlines
From $215

What is the cheapest place to fly to from Illinois?

The cheapest city to fly to from Illinois is Toronto, with prices starting at $73. Explore other affordable destinations below.

Toronto
Toronto
From $49
Raleigh-Durham
Raleigh-Durham
From $65
Washington, D.C.
Washington, D.C.
From $73
San Diego
San Diego
From $95

Browse thousands of different options on Cheapflights for your next trip

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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 18 September 2025.

  • Which is the cheapest airport to catch a flight from Illinois?

    The cheapest routes to Melbourne can be found at Chicago O'Hare Intl airport from $1,652. While Chicago Midway airport is usually cheaper if your destination is Sydney with prices starting at $2,078. Reference our flight search to find the best deals in real time.

  • What is the cheapest month to fly from Illinois?

    Currently, the cheapest month for flights from Illinois is August. 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 $1,652 round trip
    Fly from Chicago to Melbourne from $1,811 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!

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