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Cheap Flights to Illinois
Round-trip
Economy
Flights to Illinois in 2021
Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
| 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 | 17,231,834 ₫ | Average for round-trip flights in April 2021 |
| Round-trip from | 41,384,084 ₫ | From Ho Chi Minh City to Chicago |
| One-way from | 13,333,333 ₫ | 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.
Cheap flights to Illinois in April, May 2021
The best prices found for ORD flights for April, May
23 Apr - 30 Apr
41,384,084 ₫pp
SGN
Ho Chi Minh City
Multiple Airlines
2 STOPS
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Multiple Airlines
3 STOPS
SGN
Ho Chi Minh City
23 Apr - 30 Apr
42,837,372 ₫pp
SGN
Ho Chi Minh City
Multiple Airlines
3 STOPS
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Multiple Airlines
3 STOPS
SGN
Ho Chi Minh City
23 Apr - 30 Apr
47,197,232 ₫pp
SGN
Ho Chi Minh City
Multiple Airlines
1 STOP
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Multiple Airlines
3 STOPS
SGN
Ho Chi Minh City
Illinois 2021 flight deals
Cheap flights to Illinois found for this year
15 Jun - 14 Sep
18,200,692 ₫pp
SGN
Ho Chi Minh City
ANA
1 STOP
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
ANA
1 STOP
SGN
Ho Chi Minh City
15 Jun - 14 Sep
18,592,848 ₫pp
SGN
Ho Chi Minh City
ANA
2 STOPS
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
ANA
1 STOP
SGN
Ho Chi Minh City
18 Nov - 22 Nov
18,846,598 ₫pp
SGN
Ho Chi Minh City
ANA
1 STOP
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
ANA
1 STOP
SGN
Ho Chi Minh City
Alternative, similarly priced destinations
See alternative destinations where airfare is generally forecast to be close to Illinois flight prices.
Find flights to Illinois
Select your preferred flight destination in Illinois from the list below.
Cheapest flights to USA
Not set on Illinois? See the cheapest flights to Vietnam. Airfare prices updated on April 19, 2021.
Ho Chi Minh City to Los Angeles flights
from 16,170,704 ₫ pp
Hanoi to San Francisco flights
from 16,632,065 ₫ pp
Ho Chi Minh City to Santa Ana flights
from 17,185,698 ₫ pp
Hanoi to Sacramento flights
from 17,439,448 ₫ pp
Ho Chi Minh City to Denver flights
from 18,662,054 ₫ pp
Ho Chi Minh City to Phoenix flights
from 19,515,572 ₫ pp
Ho Chi Minh City to Minneapolis flights
from 19,700,116 ₫ pp
Hanoi to Phoenix flights
from 19,746,252 ₫ pp
Hanoi to Los Angeles flights
from 20,138,408 ₫ pp
Hanoi to Dallas flights
from 20,207,612 ₫ pp
Ho Chi Minh City to Houston flights
from 20,207,612 ₫ pp
Ho Chi Minh City to Oakland flights
from 20,253,748 ₫ pp
Hanoi to Santa Ana flights
from 20,369,088 ₫ pp
Hanoi to Tucson flights
from 20,438,292 ₫ pp
Ho Chi Minh City to San Francisco flights
from 20,530,566 ₫ pp
Hanoi to Houston flights
from 20,807,382 ₫ pp
Popular flight searches
Check out other popular destinations found by fellow travelers in 2021.
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