Skip to main content
Cheap Flights to Illinois
Round-trip
Economy
Flights to Illinois in 2021
| Popular in | January | High demand for flights, 189% potential price rise |
| Cheapest in | November | Best time to find cheap flights, 7% potential price drop |
| Average price | 17,215,948 ₫ | Average for round-trip flights in April 2021 |
| Round-trip from | 19,705,002 ₫ | From Ho Chi Minh City to Chicago |
| One-way from | 14,496,428 ₫ | One-way flight from Ho Chi Minh City to Chicago |
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 in the evening. Booking a flight in the morning will likely mean higher prices.
Alternative, similarly priced destinations
Find flights to Illinois
Cheapest flights to USA
Ho Chi Minh City to San Jose flights
from 15,648,767 ₫ pp
Ho Chi Minh City to Los Angeles flights
from 15,740,955 ₫ pp
Ho Chi Minh City to San Francisco flights
from 16,363,218 ₫ pp
Ho Chi Minh City to Oakland flights
from 16,801,108 ₫ pp
Hanoi to Sacramento flights
from 17,423,370 ₫ pp
Hanoi to Seattle flights
from 18,783,130 ₫ pp
Ho Chi Minh City to San Diego flights
from 19,382,348 ₫ pp
Ho Chi Minh City to Denver flights
from 19,451,488 ₫ pp
Ho Chi Minh City to Phoenix flights
from 19,497,580 ₫ pp
Ho Chi Minh City to Chicago flights
from 19,705,002 ₫ pp
Hanoi to Phoenix flights
from 19,728,048 ₫ pp
Ho Chi Minh City to Dallas flights
from 19,843,282 ₫ pp
Hanoi to Dallas flights
from 20,188,984 ₫ pp
Ho Chi Minh City to Houston flights
from 20,188,984 ₫ pp
Ho Chi Minh City to William P. Hobby flights
from 20,188,984 ₫ pp
Hanoi to Santa Ana flights
from 20,350,312 ₫ pp
Popular flight searches
Popular cities in USA
Popular places in USA