Cheap flights to Illinois

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Flights to Illinois in 2021

Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
Popular inJanuaryHigh demand for flights, 18% potential price rise
Cheapest inFebruaryBest time to find cheap flights, 3% potential price drop
Average price$2,013Average for return flights in December 2021
Return from$1,359From Sydney Kingsford Smith to Chicago
One-way from$1,056One-way flight from Sydney Kingsford Smith (SYD) to Illinois

Cheap flights to Illinois in December, January 2021

The best prices found for CHI flights for December, January
9 Jan. - 6 Feb.
SYD

Sydney Kingsford Smith

ORD

Chicago O'Hare Intl

2 stops

38h 12m
ORD

Chicago O'Hare Intl

SYD

Sydney Kingsford Smith

1 stop

30h 15m
$1,761

ANA

View Deal

Deal found 5/12/21

26 Jan. - 27 Feb.
SYD

Sydney Kingsford Smith

ORD

Chicago O'Hare Intl

2 stops

37h 31m
ORD

Chicago O'Hare Intl

SYD

Sydney Kingsford Smith

1 stop

30h 15m
$1,768

ANA

View Deal

Deal found 6/12/21

24 Jan. - 31 Jan.
SYD

Sydney Kingsford Smith

ORD

Chicago O'Hare Intl

2 stops

42h 05m
ORD

Chicago O'Hare Intl

SYD

Sydney Kingsford Smith

2 stops

35h 35m
$1,803

Multiple Airlines

View Deal

Deal found 7/12/21

Illinois 2021 flight deals

Cheap flights to Illinois found for this year
7 Dec. - 14 Dec.
SYD

Sydney Kingsford Smith

ORD

Chicago O'Hare Intl

1 stop

37h 10m
ORD

Chicago O'Hare Intl

SYD

Sydney Kingsford Smith

2 stops

42h 45m
$1,818

Japan Airlines

View Deal

Deal found 6/12/21

14 Dec. - 22 Dec.
SYD

Sydney Kingsford Smith

ORD

Chicago O'Hare Intl

1 stop

37h 10m
ORD

Chicago O'Hare Intl

SYD

Sydney Kingsford Smith

1 stop

27h 10m
$1,855

Japan Airlines

View Deal

Deal found 7/12/21

14 Dec. - 22 Dec.
SYD

Sydney Kingsford Smith

ORD

Chicago O'Hare Intl

1 stop

37h 10m
ORD

Chicago O'Hare Intl

SYD

Sydney Kingsford Smith

2 stops

30h 44m
$1,947

Japan Airlines

View Deal

Deal found 7/12/21

Last minute flights to Illinois

Late deals on return flights to Illinois, departing today and this week
14 Dec. - 22 Dec.
SYD

Sydney Kingsford Smith

ORD

Chicago O'Hare Intl

1 stop

37h 10m
ORD

Chicago O'Hare Intl

SYD

Sydney Kingsford Smith

1 stop

27h 10m
$1,855

Japan Airlines

View Deal

Deal found 7/12/21

14 Dec. - 22 Dec.
SYD

Sydney Kingsford Smith

ORD

Chicago O'Hare Intl

1 stop

37h 10m
ORD

Chicago O'Hare Intl

SYD

Sydney Kingsford Smith

2 stops

30h 44m
$1,947

Japan Airlines

View Deal

Deal found 7/12/21

16 Dec. - 18 Jan.
SYD

Sydney Kingsford Smith

ORD

Chicago O'Hare Intl

3 stops

30h 59m
ORD

Chicago O'Hare Intl

SYD

Sydney Kingsford Smith

2 stops

41h 25m
$2,164

Multiple Airlines

View Deal

Deal found 8/12/21

Can I fly to Illinois from Australia right now?

Information is based on travel restrictions from Australia to Illinois

Most visitors from Australia need to provide a negative COVID-19 test result and/or quarantine to enter Illinois.

COVID-19 testing requirements
Visitors from Australia must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 24 hours before departing to Illinois.

Quarantine requirements
Visitors from Australia are not required to quarantine after entering Illinois.

Can I fly back to Australia from Illinois?

Returning to Australia from Illinois

COVID-19 testing requirements
Visitors from Illinois must present a negative RT-PCR (NAAT) test taken 72 hours before departing to Australia.

Quarantine requirements
Visitors from Illinois are not required to quarantine after entering Australia.

What is the cheapest month to fly to Illinois?

The cheapest ticket to Illinois found for each month in 2021 based on historical flight searches by Cheapflights users.

January

$1,280

February

$1,264

March

$1,255

April

$1,465

May

$1,290

June

$1,325

July

$1,291

August

$1,241

September

$1,281

October

$1,246

November

$1,159

December

$1,607

Currently, November is the cheapest month in which you can book a flight to Illinois. Flying to Illinois in December will prove the most costly. There are multiple factors that influence the price of a flight so comparing airlines, departure airports and times can help keep costs down.

When is the best time to fly to Illinois?

Average Illinois flight ticket prices and weather conditions for 2021 and 2022 by month

SYD - CHI

Price

$1,176 - $2,364

CHI

Temperature

-5 - 23 °C

CHI

Precipitation

43 - 125 mm

The best time to fly to Illinois is during July, but great deals can be found at other times. July sees the temperatures in Illinois peak to their warmest. August tends, on average, to see the most amount of rainfall.