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Cheap Flights to Illinois

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Home North America USA Cheap flights to Illinois, United States

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, 22% potential price rise
Cheapest inFebruaryBest time to find cheap flights, 4% potential price drop
Average price$1,172Average for round-trip flights in April 2021
Round-trip from$2,337From Sydney to Chicago
One-way from$1,514One-way flight from Sydney to Chicago

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
$1,136
February
$1,174
March
$1,165
April
$1,224
May
$1,094
June
$1,242
July
$1,125
August
$1,144
September
$1,197
October
$1,176
November
$1,141
December
$1,366
May is currently the cheapest month to fly to Illinois. At this moment in time December is the most expensive month. These prices are determined by multiple factors and booking in advance can help keep costs down if your schedule is not as flexible.

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
$1,094 - $2,200
CHI
Temperature
1 - 29 °C
CHI
Rainfall
17 - 109 mm
Flying to Illinois in May is usually considered the best time to fly. However, you will find other deals are always available year round. 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?

Booking 1 days in advance of your planned departure date is, on average, the best time to get cheap flights to Illinois. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

Which day is cheapest to fly to Illinois?

The cheapest flights to Illinois are usually found when departing on a Tuesday. The departure day with the highest cost at present is Saturday.

What time of day is cheapest to fly to Illinois?

At the moment, flights in the morning are likely to offer the best value for money for your Illinois trip. A flight in the afternoon will more often than not be of higher cost.

Cheap flights to Illinois in April, May 2021

The best prices found for ORD flights for April, May
17 Apr - 17 May
$2,699pp
SYD
Sydney Kingsford Smith
Emirates
 
1 STOP
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Emirates
   
2 STOPS
SYD
Sydney Kingsford Smith
12 May - 6 Jun
$2,775pp
SYD
Sydney Kingsford Smith
United Airlines
   
2 STOPS
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
United Airlines
   
2 STOPS
SYD
Sydney Kingsford Smith
12 May - 6 Jun
$2,776pp
SYD
Sydney Kingsford Smith
United Airlines
   
2 STOPS
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
United Airlines
   
2 STOPS
SYD
Sydney Kingsford Smith

Illinois 2021 flight deals

Cheap flights to Illinois found for this year
15 Oct - 10 Nov
$1,556pp
SYD
Sydney Kingsford Smith
Multiple airlines
   
2 STOPS
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Multiple Airlines
     
3 STOPS
SYD
Sydney Kingsford Smith
15 Oct - 10 Nov
$1,593pp
SYD
Sydney Kingsford Smith
Multiple airlines
     
3 STOPS
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Multiple Airlines
     
3 STOPS
SYD
Sydney Kingsford Smith
15 Oct - 10 Nov
$1,660pp
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

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.

Cheapest flights to USA

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Home North America USA Cheap flights to Illinois, United States
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