Cheap Flights to Illinois from $1,655

Q: Can I fly back to USA from Illinois?

Returning to USA from Illinois COVID-19 testing requirements Visitors from Illinois must present a negative RT-PCR (NAAT) test taken 72 hours before departing to USA. Quarantine requirements Visitors from Illinois are not required to quarantine after entering USA.

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 in	January	High demand for flights, 23% potential price rise
Cheapest in	February	Best time to find cheap flights, 4% potential price drop
Average price	$2,003	Average for round-trip flights in December 2021
Round-trip from	$1,387	From Sydney Kingsford Smith to Illinois
One-way from	$14	One-way flight from Sydney Kingsford Smith (SYD) to Illinois

Cheap flights to Illinois in December, January 2021

The best prices found for ORD flights for December, January

31 Jan - 9 Feb

$1,755pp

SYD

Sydney Kingsford Smith

Multiple airlines

2 STOPS

ORD

Chicago O'Hare Intl

ORD

Chicago O'Hare Intl

Multiple Airlines

2 STOPS

SYD

Sydney Kingsford Smith

8 Jan - 23 May

$1,912pp

SYD

Sydney Kingsford Smith

Japan Airlines

2 STOPS

STL

Lambert-St Louis

STL

Lambert-St Louis

Japan Airlines

2 STOPS

SYD

Sydney Kingsford Smith

2 Dec - 10 Dec

$1,941pp

SYD

Sydney Kingsford Smith

ANA

1 STOP

ORD

Chicago O'Hare Intl

ORD

Chicago O'Hare Intl

ANA

2 STOPS

SYD

Sydney Kingsford Smith

Illinois 2021 flight deals

Cheap flights to Illinois found for this year

30 Nov - 7 Dec

$1,940pp

SYD

Sydney Kingsford Smith

ANA

1 STOP

ORD

Chicago O'Hare Intl

ORD

Chicago O'Hare Intl

ANA

2 STOPS

SYD

Sydney Kingsford Smith

2 Dec - 10 Dec

$1,941pp

SYD

Sydney Kingsford Smith

ANA

1 STOP

ORD

Chicago O'Hare Intl

ORD

Chicago O'Hare Intl

ANA

2 STOPS

SYD

Sydney Kingsford Smith

6 Dec - 14 Dec

$1,943pp

SYD

Sydney Kingsford Smith

ANA

1 STOP

ORD

Chicago O'Hare Intl

ORD

Chicago O'Hare Intl

ANA

2 STOPS

SYD

Sydney Kingsford Smith

Last minute flights to Illinois

Late deals on return flights to Illinois, departing today and this week

6 Dec - 14 Dec

$1,943pp

SYD

Sydney Kingsford Smith

ANA

1 STOP

ORD

Chicago O'Hare Intl

ORD

Chicago O'Hare Intl

ANA

2 STOPS

SYD

Sydney Kingsford Smith

6 Dec - 14 Dec

$2,158pp

SYD

Sydney Kingsford Smith

Multiple airlines

3 STOPS

ORD

Chicago O'Hare Intl

ORD

Chicago O'Hare Intl

Multiple Airlines

2 STOPS

SYD

Sydney Kingsford Smith

6 Dec - 14 Dec

$2,316pp

SYD

Sydney Kingsford Smith

ANA

1 STOP

ORD

Chicago O'Hare Intl

ORD

Chicago O'Hare Intl

ANA

1 STOP

SYD

Sydney Kingsford Smith

COVID Restrictions

View COVID Travel Restrictions for Illinois

Can I fly to Illinois from USA right now?

Information is based on travel restrictions for travel to Illinois within the United States

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

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

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

Can I fly back to USA from Illinois?

Returning to USA from Illinois

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

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

Hide COVID Travel Restrictions for Illinois

Cheapest prices for Illinois flights by month

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

January

$1,274

February

$1,258

March

$1,249

April

$1,458

May

$1,284

June

$1,319

July

$1,285

August

$1,234

September

$1,275

October

$1,240

November

$1,153

December

$1,599

When is the best time to fly to Illinois?

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

SYD - CHI Price	$1,170 - $2,353
CHI Temperature	1 - 29 °C
CHI Precipitation	17 - 109 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. May tends, on average, to see the most amount of rainfall.

When is the best time to book a flight to Illinois?

To ensure you get the cheapest price possible for a flight to Illinois, you should look to book at least 1 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

Which day is cheapest to fly to Illinois?

Tuesday is currently, on average, the cheapest day to fly to Illinois. Flying on Saturday will result in higher flight prices.

What time of day is cheapest to fly to Illinois?

To get the best value, try booking a flight in the morning when visiting Illinois. Generally the prices will increase for flights in the afternoon as these tend to have higher demand.

Alternative, similarly priced destinations

See alternative destinations where airfare is generally forecast to be close to Illinois flight prices.

Find flights to Illinois

Select your preferred flight destination in Illinois from the list below.

Look for other cheap flights to Belleville

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Look for other cheap flights to Rockford Look for other cheap flights to Midway Look for other cheap flights to O'Hare Intl

Look for other cheap flights to Moline

Select your preferred route to Illinois from Australia below

Adelaide to Illinois Australia to Illinois Brisbane to Illinois Cairns to Illinois Melbourne to Illinois Perth to Illinois Sydney to Illinois

Cheapest flights to USA

Not set on Illinois? See the cheapest flights to Australia. Airfare prices updated on December 01, 2021.

Melbourne to Honolulu flights from $260 pp

Sydney to Honolulu flights from $569 pp

Brisbane to Honolulu flights from $601 pp

Adelaide to Honolulu flights from $650 pp

Sydney to Los Angeles flights from $1,064 pp

Sydney to Kahului flights from $1,082 pp

Perth to Honolulu flights from $1,106 pp

Sydney to Lihue flights from $1,109 pp

Sydney to Hilo flights from $1,165 pp

Sydney to San Diego flights from $1,211 pp

Adelaide to Los Angeles flights from $1,217 pp

Melbourne to Los Angeles flights from $1,218 pp

Sydney to San Francisco flights from $1,253 pp

Sydney to New York flights from $1,269 pp

Sydney to Portland flights from $1,273 pp

Brisbane to Los Angeles flights from $1,284 pp

Cheap Flights to Illinois

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.

Cheap flights to Illinois in December, January 2021

The best prices found for ORD flights for December, January

Illinois 2021 flight deals

Cheap flights to Illinois found for this year

Last minute flights to Illinois

Late deals on return flights to Illinois, departing today and this week

COVID Restrictions

Can I fly to Illinois from USA right now?

Can I fly back to USA from Illinois?

Cheapest prices for Illinois flights by month

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

When is the best time to fly to Illinois?

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

When is the best time to book a flight to Illinois?

To ensure you get the cheapest price possible for a flight to Illinois, you should look to book at least 1 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

Which day is cheapest to fly to Illinois?

Tuesday is currently, on average, the cheapest day to fly to Illinois. Flying on Saturday will result in higher flight prices.

What time of day is cheapest to fly to Illinois?

To get the best value, try booking a flight in the morning when visiting Illinois. Generally the prices will increase for flights in the afternoon as these tend to have higher demand.

Alternative, similarly priced destinations

See alternative destinations where airfare is generally forecast to be close to Illinois flight prices.

Find flights to Illinois

Select your preferred flight destination in Illinois from the list below.

Select your preferred route to Illinois from Australia below

Cheapest flights to USA

Not set on Illinois? See the cheapest flights to Australia. Airfare prices updated on December 01, 2021.

Popular flight searches

Check out other popular destinations found by fellow travellers in 2021.

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