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#smartAirportField( "origin${leg}", $options['origin'], $options['originCode'], "#string('FROM_TO_INPUT_PLACEHOLDER_FFD')", "origin$leg", "origincode$leg" ) #nearbyAirportField("nearbyOriginCheck$leg", $nearbyO, false "$!options['origin']")
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#smartAirportField( "destination${leg}", $options['destination'], $options['destinationCode'], "#string('FROM_TO_INPUT_PLACEHOLDER_FFD')", "destination${leg}", "destinationcode${leg}" ) #nearbyAirportField("nearbyDestinationCheck${leg}", $nearbyD, false, "$!options['destination']")
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Mon. 13/7
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#smartAirportField( "origin${leg}", $options['origin'], $options['originCode'], "#string('FROM_TO_INPUT_PLACEHOLDER_FFD')", "origin$leg", "origincode$leg" ) #nearbyAirportField("nearbyOriginCheck$leg", $nearbyO, false "$!options['origin']")
To
#smartAirportField( "destination${leg}", $options['destination'], $options['destinationCode'], "#string('FROM_TO_INPUT_PLACEHOLDER_FFD')", "destination${leg}", "destinationcode${leg}" ) #nearbyAirportField("nearbyDestinationCheck${leg}", $nearbyD, false, "$!options['destination']")
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#removeLegButton($self.id("removeLeg$leg"))
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#smartAirportField( "origin${leg}", $options['origin'], $options['originCode'], "#string('FROM_TO_INPUT_PLACEHOLDER_FFD')", "origin$leg", "origincode$leg" ) #nearbyAirportField("nearbyOriginCheck$leg", $nearbyO, false "$!options['origin']")
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#smartAirportField( "destination${leg}", $options['destination'], $options['destinationCode'], "#string('FROM_TO_INPUT_PLACEHOLDER_FFD')", "destination${leg}", "destinationcode${leg}" ) #nearbyAirportField("nearbyDestinationCheck${leg}", $nearbyD, false, "$!options['destination']")
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#removeLegButton($self.id("removeLeg$leg"))
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#smartAirportField( "origin${leg}", $options['origin'], $options['originCode'], "#string('FROM_TO_INPUT_PLACEHOLDER_FFD')", "origin$leg", "origincode$leg" ) #nearbyAirportField("nearbyOriginCheck$leg", $nearbyO, false "$!options['origin']")
To
#smartAirportField( "destination${leg}", $options['destination'], $options['destinationCode'], "#string('FROM_TO_INPUT_PLACEHOLDER_FFD')", "destination${leg}", "destinationcode${leg}" ) #nearbyAirportField("nearbyDestinationCheck${leg}", $nearbyD, false, "$!options['destination']")
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#removeLegButton($self.id("removeLeg$leg"))
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#smartAirportField( "origin${leg}", $options['origin'], $options['originCode'], "#string('FROM_TO_INPUT_PLACEHOLDER_FFD')", "origin$leg", "origincode$leg" ) #nearbyAirportField("nearbyOriginCheck$leg", $nearbyO, false "$!options['origin']")
To
#smartAirportField( "destination${leg}", $options['destination'], $options['destinationCode'], "#string('FROM_TO_INPUT_PLACEHOLDER_FFD')", "destination${leg}", "destinationcode${leg}" ) #nearbyAirportField("nearbyDestinationCheck${leg}", $nearbyD, false, "$!options['destination']")
Leaving on
Depart
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Anytime
#removeLegButton($self.id("removeLeg$leg"))
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#smartAirportField( "origin${leg}", $options['origin'], $options['originCode'], "#string('FROM_TO_INPUT_PLACEHOLDER_FFD')", "origin$leg", "origincode$leg" ) #nearbyAirportField("nearbyOriginCheck$leg", $nearbyO, false "$!options['origin']")
To
#smartAirportField( "destination${leg}", $options['destination'], $options['destinationCode'], "#string('FROM_TO_INPUT_PLACEHOLDER_FFD')", "destination${leg}", "destinationcode${leg}" ) #nearbyAirportField("nearbyDestinationCheck${leg}", $nearbyD, false, "$!options['destination']")
Leaving on
Depart
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#removeLegButton($self.id("removeLeg$leg"))
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#infantInLapWarning('multiRightOfTravelers')
Home North America USA Cheap flights to Illinois, United States

Cheap Flights to Illinois

Popular in December High demand for flights, 23% potential price rise
Cheapest in May Best time to find cheap flights, 4% potential price drop
Average price $1,399 Average for round-trip flights in July 2020
Round-trip from $1.196 From Melbourne to Chicago
One-way from $741 One-way flight from Melbourne to Chicago
Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.

Cheapest prices for Illinois flights by month

January
$1,587
February
$1,253
March
$1,264
April
$1,316
May
$1,305
June
$1,273
July
$1,327
August
$1,238
September
$1,271
October
$1,364
November
$1,265
December
$1,413
August is currently the cheapest month to fly to Illinois. At this moment in time January 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?

Choose a month below to see average flight price and weather conditions.
MEL - CHI
Price
$1,238 - $2,147
CHI
Temperature
1 - 29 °C
CHI
Rainfall
17 - 109 mm
Flying to Illinois in August 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 60 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 Wednesday. 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 at midday will more often than not be of higher cost.

Alternative, similarly priced destinations

Find flights to Illinois

Select your preferred destinations from the list below
Flights to Belleville
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Select your preferred route from the list below
Adelaide to Illinois Australia to Illinois Avalon to Illinois Brisbane to Illinois Cairns to Illinois Canberra to Illinois Darwin to Illinois Hobart to Illinois Launceston to Illinois Melbourne to Illinois Perth to Illinois Sydney to Illinois
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International departures to Illinois

Home North America USA Cheap flights to Illinois, United States
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