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Cheap Flights to Illinois
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Economy
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Economy
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, 22% potential price rise |
| Cheapest in | February | Best time to find cheap flights, 4% potential price drop |
| Average price | $1,172 | Average for round-trip flights in April 2021 |
| Round-trip from | $2,337 | From Sydney to Chicago |
| One-way from | $1,514 | One-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.
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 April 14, 2021.
Sydney to Los Angeles flights
from $1,064 pp
Brisbane to Los Angeles flights
from $1,238 pp
Sydney to Lihue flights
from $1,260 pp
Melbourne to Los Angeles flights
from $1,281 pp
Sydney to Honolulu flights
from $1,349 pp
Sydney to San Francisco flights
from $1,420 pp
Melbourne to Honolulu flights
from $1,451 pp
Melbourne to New York flights
from $1,472 pp
Avalon to Los Angeles flights
from $1,517 pp
Sydney to Worcester flights
from $1,520 pp
Canberra to Los Angeles flights
from $1,534 pp
Sydney to Chicago flights
from $1,556 pp
Sydney to Dallas flights
from $1,558 pp
Sydney to Portland flights
from $1,575 pp
Melbourne to Albuquerque flights
from $1,591 pp
Sydney to San Diego flights
from $1,591 pp
Popular flight searches
Check out other popular destinations found by fellow travellers in 2021.
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