HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Vietnam

$355+ Cheap flights from Illinois to Vietnam

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/25. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SGN
Dec 20 — Dec 271
Sat 12/20
Sat 12/27
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Illinois to Vietnam with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Find flight deals from Illinois to Vietnam

Cheapest flights from Illinois to Vietnam
Explore the most affordable flight options available from Illinois to Vietnam. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 20, 2025.

This FlightHub deal was found by Cheapflights users on 11/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/3010:30 amORD - SGN
1 stop24h 45mANA
Thu 2/57:30 amSGN - ORD
2 stops24h 22mANA
Deal found 11/18$835
This FlightHub deal was found by Cheapflights users on 11/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/294:25 pmORD - SGN
1 stop42h 50mANA
Sun 12/711:05 pmSGN - ORD
1 stop29h 05mANA
Deal found 11/18$836
This oojo deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/262:35 pmORD - SGN
1 stop31h 00mCathay Pacific
Thu 12/117:15 amSGN - ORD
1 stop18h 40mCathay Pacific
Deal found 11/19$837
This oojo deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/252:35 pmORD - SGN
1 stop20h 45mCathay Pacific
Mon 1/267:35 pmSGN - ORD
1 stop30h 20mCathay Pacific
Deal found 11/19$840
This CrystalTravel deal was found by Cheapflights users on 11/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/267:10 amORD - SGN
2 stops28h 05mANA
Tue 12/1611:05 pmSGN - ORD
1 stop21h 15mANA
Deal found 11/18$841
This United Airlines deal was found by Cheapflights users on 11/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/278:47 amORD - SGN
3 stops49h 08mUnited Airlines
Mon 12/111:05 pmSGN - ORD
1 stop29h 05mUnited Airlines
Deal found 11/17$843
This United Airlines deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/249:08 pmORD - SGN
2 stops38h 07mUnited Airlines
Mon 12/111:05 pmSGN - ORD
1 stop29h 05mUnited Airlines
Deal found 11/19$848
This Booking.com deal was found by Cheapflights users on 11/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/262:35 pmORD - SGN
1 stop31h 00mCathay Pacific
Tue 12/167:35 pmSGN - ORD
1 stop30h 20mCathay Pacific
Deal found 11/18$854
This United Airlines deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/3011:55 pmORD - SGN
2 stops34h 00mUnited Airlines
Thu 2/57:30 amSGN - ORD
1 stop19h 20mUnited Airlines
Deal found 11/19$856
This United Airlines deal was found by Cheapflights users on 11/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/286:15 amORD - SGN
2 stops51h 40mUnited Airlines
Tue 12/96:00 amSGN - ORD
2 stops23h 40mUnited Airlines
Deal found 11/17$858
This United Airlines deal was found by Cheapflights users on 11/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/242:40 pmORD - SGN
2 stops44h 35mUnited Airlines
Mon 12/86:00 amSGN - ORD
2 stops25h 50mUnited Airlines
Deal found 11/18$859
This Delta deal was found by Cheapflights users on 11/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/35:29 pmMDW - SGN
2 stops40h 51mDelta
Mon 12/158:00 amSGN - MDW
2 stops28h 47mDelta
Deal found 11/17$865

Cheap flight deals from Illinois to Vietnam

Keep the following information in mind while searching for Illinois to Vietnam flight deals. Data was last updated November 20, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$789
(Cathay Pacific)

One-way from

$355
(Kiwi.com)

Popular in

June

Cheapest in

September

Average price

$903
Provider with most accurate pricing for Chicago (CHI)-Ho Chi Minh City flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago (CHI)-Ho Chi Minh City flights.
Search Deals
From Illinois to Vietnam
Search Deals
One-way flight from Illinois to Vietnam
Search Deals
Highest demand for flights based on searches. 20% potential increase in price ($299 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($52 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois to Vietnam that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated November 20, 2025.
Use the filters below to find and compare flights from Illinois to Vietnam that are best for you.

Fly from

Illinois

Fly to

Vietnam

Route

Depart

Return

Price

ChicagoPhu Quoc

ORD - PQC

ORDPQC

Chicago O'Hare Intl

Thu 1/22

2:35 pm-9:50 am

1 stop30h 15m

Phu Quoc Duong Dang

Mon 1/26

6:55 pm-12:55 pm

1 stop31h 00m

$862

ChicagoDa Nang

ORD - DAD

ORDDAD

Chicago O'Hare Intl

Mon 1/12

2:35 pm-5:45 pm

1 stop38h 10m

Da Nang

Mon 2/9

10:05 am-12:55 pm

1 stop39h 50m

$864

ChicagoHo Chi Minh City

MDW - SGN

MDWSGN

Chicago Midway

Wed 12/3

5:29 pm-11:20 pm

2 stops40h 51m

Ho Chi Minh City

Mon 12/15

8:00 am-11:47 pm

2 stops28h 47m

$865

ChicagoHo Chi Minh City

ORD - SGN

ORDSGN

Chicago O'Hare Intl

Thu 3/26

6:50 pm-10:00 am

2 stops27h 10m

Ho Chi Minh City

Mon 4/20

10:50 am-5:00 am

2 stops30h 10m

$874

ChicagoHo Chi Minh City

ORD - SGN

ORDSGN

Chicago O'Hare Intl

Wed 4/1

12:20 pm-11:15 pm

1 stop22h 55m

Ho Chi Minh City

Tue 4/7

1:55 pm-9:40 am

1 stop31h 45m

$904

ChicagoHo Chi Minh City

ORD - SGN

ORDSGN

Chicago O'Hare Intl

Tue 3/31

12:20 pm-12:35 pm

1 stop36h 15m

Ho Chi Minh City

Tue 4/7

1:55 pm-9:40 am

1 stop31h 45m

$904

ChicagoHo Chi Minh City

ORD - SGN

ORDSGN

Chicago O'Hare Intl

Wed 4/1

7:00 am-9:50 pm

2 stops26h 50m

Ho Chi Minh City

Wed 5/6

11:15 pm-8:40 am

1 stop21h 25m

$910

ChicagoHo Chi Minh City

ORD - SGN

ORDSGN

Chicago O'Hare Intl

Sun 4/12

9:10 pm-9:50 pm

2 stops36h 40m

Ho Chi Minh City

Wed 5/6

11:15 pm-8:40 am

1 stop21h 25m

$910

St. LouisHo Chi Minh City

STL - SGN

STLSGN

Lambert-St Louis

Tue 1/20

11:05 am-5:55 am

2 stops29h 50m

Ho Chi Minh City

Mon 4/27

8:20 am-10:29 pm

2 stops26h 09m

$912

ChicagoHo Chi Minh City

ORD - SGN

ORDSGN

Chicago O'Hare Intl

Thu 2/26

4:25 pm-9:50 pm

1 stop40h 25m

Ho Chi Minh City

Sun 3/15

11:05 pm-11:44 pm

2 stops36h 39m

$916

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/17

Showing 1-10 of 60 results
1
2
3
...
6

Best time to book a flight from Illinois to Vietnam

Have a flexible travel schedule? Discover the best time to fly to Vietnam from Illinois with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Illinois to Vietnam

What is the cheapest month to book a flight from Illinois to Vietnam?

Currently, June is the cheapest month in which you can book a flight from Illinois to Vietnam (average of $583). Flying from Illinois to Vietnam in May is currently the most expensive (average of $884). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from IL to VN?

Find hourly flight availability from Illinois to Vietnam. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 20, 2025.

It’s typically best to fly out from Illinois to Vietnam in the evening. Doing so could potentially save you 42% on the flight price compared to flying in the morning, which is usually more expensive.

What is the cheapest day to fly from Illinois to Vietnam?

Use this chart to determine the cheapest time to fly round-trip from Illinois to Vietnam. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Illinois to Vietnam flight should consider departing on Thursday evenings when fares are most often at their lowest. Saturday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Related info for your journey

Find useful and relevant information for your journey from Illinois to Vietnam. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Illinois to Vietnam?

    Departing from Illinois to Vietnam will take you 22h 55m. Airlines will cover a distance of 8667 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from Illinois to Vietnam one-way?

    One-way options have recently been found by users for as low as $450 on Cathay Pacific. Other airlines that offer cheap prices include Air India from $464 and Japan Airlines from $484 one-way.

  • Can I find deals for flights from Illinois to Vietnam that include hotel bookings?

    Yes. In addition to deals on Illinois to Vietnam flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Illinois to Vietnam?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Illinois to Vietnam.

  • Can I find deals for business class flights from Illinois to Vietnam?

    Yes. Cheapflights offers flight deals from Illinois to Vietnam by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Illinois to Vietnam?

    Currently, June is the cheapest month in which you can book a flight from Illinois to Vietnam (average of $583). Flying from Illinois to Vietnam in May is currently the most expensive (average of $884). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Illinois to Vietnam

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to Haneda flights
John F Kennedy Intl to Haneda flights
Los Angeles to Narita flights
Newark to Haneda flights
Newark to Narita flights
San Francisco to Haneda flights
Seattle to Narita flights
John F Kennedy Intl to Mumbai flights
Newark to New Delhi flights
John F Kennedy Intl to New Delhi flights
San Francisco to Narita flights
Los Angeles to Manila flights
Newark to Mumbai flights
John F Kennedy Intl to Suvarnabhumi flights
John F Kennedy Intl to Narita flights
Los Angeles to Suvarnabhumi flights
Seattle to Haneda flights
San Francisco to Manila flights
John F Kennedy Intl to Ahmedabad flights
Dallas/Fort Worth to Narita flights
LaGuardia to Haneda flights
LaGuardia to Narita flights
Newark to Suvarnabhumi flights
Ontario to Narita flights
San Francisco to New Delhi flights
Dallas/Fort Worth to Haneda flights
Seattle to Suvarnabhumi flights
John F Kennedy Intl to Taiwan Taoyuan Intl flights
O'Hare Intl to Narita flights
Dulles Intl to Haneda flights
Newark to Ahmedabad flights
LaGuardia to New Delhi flights
Boston to Narita flights
O'Hare Intl to Haneda flights
LaGuardia to Suvarnabhumi flights
Los Angeles to Incheon Intl flights
San Francisco to Suvarnabhumi flights
Dallas/Fort Worth to Hyderabad flights
LaGuardia to Mumbai flights
Hobby to Haneda flights
Denver to Narita flights
San Francisco to Taiwan Taoyuan Intl flights
John F Kennedy Intl to Incheon Intl flights
O'Hare Intl to Suvarnabhumi flights
John F Kennedy Intl to Hong Kong flights
Honolulu to Narita flights
John F Kennedy Intl to Manila flights
Honolulu to Haneda flights
Dulles Intl to Suvarnabhumi flights
Hobby to Narita flights

Top 9 airlines flying from Illinois to Vietnam

Discover the top 9 airlines that operate flights from Illinois to Vietnam. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated November 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
ANACheapest$624Average$935FlexibilityNo cancel feeOn-time80%
Cathay PacificCheapest$662Average$928FlexibilityNo cancel feeOn-time72%
DeltaCheapest$681Average$1,214FlexibilityNo cancel feeOn-timeN/A
Korean AirCheapest$750Average$1,230FlexibilityNo cancel feeOn-time81%
Japan AirlinesCheapest$770Average$1,080FlexibilityNo cancel feeOn-time79%
Turkish AirlinesCheapest$816Average$1,118FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$829Average$1,089FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$840Average$1,087FlexibilityNo cancel feeOn-time71%
EVA AirCheapest$934Average$1,291FlexibilityNo cancel feeOn-time74%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.