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 to Illinois?

Illinois flights can be made cheaper if you choose a flight at noon. Booking a flight in the morning will likely mean higher prices.

When is the best time to book a flight to Illinois?

Booking 45 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.

Cheap Flights to Illinois from 13,187,572₫

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Popular in	January	High demand for flights, 190% potential price rise
Cheapest in	November	Best time to find cheap flights, 7% potential price drop
Average price	36,294,592₫	Average for round-trip flights in January 2021
Round-trip from	19,332,566₫	From Ho Chi Minh City to Chicago
One-way from	13,187,572₫	One-way flight from Ho Chi Minh City to Chicago

Cheap Flights to Illinois

When is the best time to book a flight to Illinois?

Booking 45 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 to Illinois?

Illinois flights can be made cheaper if you choose a flight at noon. Booking a flight in the morning will likely mean higher prices.

Alternative, similarly priced destinations

Find flights to Illinois

Select your preferred destinations from the list below

Cheapest flights to USA

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International departures to Illinois

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Cheap Flights to Illinois

When is the best time to book a flight to Illinois?

Booking 45 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 to Illinois?

Illinois flights can be made cheaper if you choose a flight at noon. Booking a flight in the morning will likely mean higher prices.

Alternative, similarly priced destinations

Find flights to Illinois

Select your preferred destinations from the list below

Cheapest flights to USA

Popular flight searches

Check out other popular destinations found by fellow travelers

International departures to Illinois