Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
High demand for flights, 4% potential price rise
Best time to find cheap flights, 2% potential price drop
Average for round-trip flights in May 2021
From Johannesburg to Illinois
One-way flight from Johannesburg to 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.
Currently, the cheapest month for flights to Illinois is February. The most expensive month for flights is December. The cheapest prices are shown above but prices will vary according to departure times, airlines, class and how early you book.
When is the best time to fly to Illinois?
Average Chicago flight ticket prices and weather conditions for 2021 and 2022 by month.
JNB - CHI
R11 014 - R20 085
1 - 29 °C
17 - 109 mm
Flying to Illinois in February is usually considered the best time to fly. However, you will find other deals are always available year round. July tends to be the warmest period in Illinois so if you are looking for sun or warmer climates then look to fly around this time. May is the wettest if you need to factor this in to your plans.
When is the best time to book a flight to Illinois?
Booking 35 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 Friday.
What time of day is cheapest to fly to Illinois?
Illinois flights can be made cheaper if you choose a flight at midday. Booking a flight in the afternoon will likely mean higher prices.