We work with more than 300 partners to bring you better travel deals
Cheap Flights to Illinois
| Most popular in | January | High demand for flights, 191% potential price rise |
| Cheapest in | November | Best time to find cheap flights, 8% potential price drop |
| Average price | 18,116,612₫ | Price for this month |
| Cheapest price | 18,301,712₫ | From Ho Chi Minh City to Chicago |
Cheapest Prices for Illinois flights by month
When is the best time to book flights to Illinois?
Booking 39 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?
At the moment, Sunday is the most economical day to take a flight to Illinois. Monday is likely to be the most costly.
What time of day is cheapest to fly?
Illinois flights can be made cheaper if you choose a flight at noon. Booking a flight in the afternoon will likely mean higher prices.
Sitting along the banks of the Mississippi River and Lake Michigan, Illinois’s accessible location has for centuries made it an important hub. Historically emigrants from Mexico, Ireland and Poland would make the long journey over in search of work and a new home. Abraham Lincoln was among those who called Illinois home and the state honoured him by naming the small city of Lincoln after him – before he became president.
Most travellers booking flights to Illinois would probably pick Chicago as their city of choice for its renowned restaurant scene and shopping but there’s so much more to see in including 6,900 kilometres of shoreline and more than 50 state parks, making it one of the most scenic states in the US.
Search and compare: flights to Illinois
Illinois climate
Illinois’s winters are very cold and long with snow and icy winds from late November through to April. Summers, especially July and August, the weather tends to be hot and humid. The best times to visit is when the weather is perfect, in spring and autumn; tornado season can occur anytime between the months of March and May. Chicago’s summers are humid with highs of 30 degrees (Celsius) or more and its winters are bitterly cold.
When is the best time to fly to Illinois?
Peak Season:
Winter is peak season in Illinois for skiing and snowmobiling. In summer many different festivals take place in Chicago’s parks and neighbourhoods almost every weekend, making it difficult to find a cheap Illinois flight.
Off Season:
The best month to book a cheap Illinois flight is September, which is also the mildest month. Autumn is visually the prettiest time to visit when the temperature is still mild and the foliage is changing. The quietest months in Chicago are from January to March but they can also be the coldest and windiest.
Search and compare: flights to Illinois
Getting around Illinois
Public transportation is reliable and taxis are easy to find. Driving is not recommended because of heavy traffic and parking is almost impossible to find. The El, a system operated by The Chicago Transit Authority consists of elevated trains running 24 hours a day. During the summer rush hour a River Bus is available.
