Cheap Flights to Illinois from 12,991,142 ₫

Q: Can I fly back to USA from Illinois?

Returning to USA from Illinois COVID-19 testing requirements Visitors from Illinois must present a negative RT-PCR (NAAT) test taken 72 hours before departing to USA. Quarantine requirements Visitors from Illinois are not required to quarantine after entering USA.

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, 192% potential price rise
Cheapest in	November	Best time to find cheap flights, 7% potential price drop
Average price	17,715,194 ₫	Average for round-trip flights in October 2021
Round-trip from	23,302,294 ₫	From Ho Chi Minh City to Illinois
One-way from	227,118 ₫	One-way flight from Ho Chi Minh City (SGN) to Illinois

Cheap flights to Illinois in October, November 2021

The best prices found for ORD flights for October, November

26 Nov - 26 Mar

18,669,090 ₫pp

SGN

Ho Chi Minh City

ANA

1 STOP

ORD

Chicago O'Hare Intl

ORD

Chicago O'Hare Intl

ANA

2 STOPS

SGN

Ho Chi Minh City

26 Nov - 26 Mar

18,759,936 ₫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

26 Nov - 26 Mar

19,146,036 ₫pp

SGN

Ho Chi Minh City

Japan Airlines

2 STOPS

ORD

Chicago O'Hare Intl

ORD

Chicago O'Hare Intl

Japan Airlines

2 STOPS

SGN

Ho Chi Minh City

Illinois 2021 flight deals

Cheap flights to Illinois found for this year

26 Nov - 26 Mar

18,669,090 ₫pp

SGN

Ho Chi Minh City

ANA

1 STOP

ORD

Chicago O'Hare Intl

ORD

Chicago O'Hare Intl

ANA

2 STOPS

SGN

Ho Chi Minh City

26 Nov - 26 Mar

18,759,936 ₫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

26 Nov - 26 Mar

19,146,036 ₫pp

SGN

Ho Chi Minh City

Japan Airlines

2 STOPS

ORD

Chicago O'Hare Intl

ORD

Chicago O'Hare Intl

Japan Airlines

2 STOPS

SGN

Ho Chi Minh City

COVID Restrictions

View COVID Travel Restrictions for Illinois

Can I fly to Illinois from USA right now?

Information is based on travel restrictions for travel to Illinois within the United States

Most visitors from USA need to provide a negative COVID-19 test result and/or quarantine to enter Illinois.

COVID-19 testing requirements
Visitors from USA must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to Illinois.

Quarantine requirements
Visitors from USA are not required to quarantine after entering Illinois.

Can I fly back to USA from Illinois?

Returning to USA from Illinois

COVID-19 testing requirements
Visitors from Illinois must present a negative RT-PCR (NAAT) test taken 72 hours before departing to USA.

Quarantine requirements
Visitors from Illinois are not required to quarantine after entering USA.

Hide COVID Travel Restrictions for 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.

May

18,078,582 ₫

Currently, is the cheapest month in which you can book a flight to Illinois. Flying to Illinois in May will prove the most costly. There are multiple factors that influence the price of a flight so comparing airlines, departure airports and times can help keep costs down.

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

The price you pay for your flight to Illinois may vary depending on when you book. For the best chance of a lower fare, look to book 45 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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?

Flights in the evening are typically the cheapest time of the day to fly to Illinois. Flights in the morning are usually the most expensive.

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.

Flights to Chicago

Flights to Rockford Flights to Midway Flights to O'Hare Intl

Cheapest flights to USA

Not set on Illinois? See the cheapest flights to Vietnam. Airfare prices updated on October 23, 2021.

Ho Chi Minh City to San Francisco flights from 15,716,557 ₫ pp

Ho Chi Minh City to Los Angeles flights from 15,989,099 ₫ pp

Ho Chi Minh City to Oakland flights from 16,534,182 ₫ pp

Hanoi to San Francisco flights from 16,784,012 ₫ pp

Ho Chi Minh City to San Jose flights from 16,784,012 ₫ pp

Hanoi to San Diego flights from 17,397,230 ₫ pp

Ho Chi Minh City to Seattle flights from 17,783,330 ₫ pp

Ho Chi Minh City to Charlotte flights from 18,055,872 ₫ pp

Ho Chi Minh City to Dallas flights from 18,623,666 ₫ pp

Hanoi to Oakland flights from 18,669,090 ₫ pp

Hanoi to Seattle flights from 18,828,072 ₫ pp

Ho Chi Minh City to New York flights from 19,350,444 ₫ pp

Ho Chi Minh City to Boston flights from 19,418,580 ₫ pp

Ho Chi Minh City to Memphis flights from 19,645,696 ₫ pp

Ho Chi Minh City to Bellingham flights from 20,486,032 ₫ pp

Hanoi to New York flights from 21,167,386 ₫ pp

Cheap Flights to Illinois

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.

Cheap flights to Illinois in October, November 2021

The best prices found for ORD flights for October, November

Illinois 2021 flight deals

Cheap flights to Illinois found for this year

COVID Restrictions

Can I fly to Illinois from USA right now?

Can I fly back to USA from 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.

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

The price you pay for your flight to Illinois may vary depending on when you book. For the best chance of a lower fare, look to book 45 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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?

Flights in the evening are typically the cheapest time of the day to fly to Illinois. Flights in the morning are usually the most expensive.

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 October 23, 2021.

Popular flight searches

Check out other popular destinations found by fellow travelers in 2021.

Find Flight Deals