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$372+ 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 1/21. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SGN
Jan 3 — Jan 101
Sat 1/3
Sat 1/10
1 adult, Economy
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Cheap 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 December 4, 2025.

This United Airlines deal was found by Cheapflights users on 12/4. 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 12/57:10 amORD - SGN
2 stops26h 45mUnited Airlines
Mon 12/226:00 amSGN - ORD
2 stops27h 25mUnited Airlines
Deal found 12/4$841
This United Airlines deal was found by Cheapflights users on 12/3. 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 12/82:35 pmORD - SGN
2 stops43h 20mUnited Airlines
Tue 12/237:30 amSGN - ORD
1 stop19h 20mUnited Airlines
Deal found 12/3$856
This United Airlines deal was found by Cheapflights users on 12/4. 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 12/57:10 amORD - SGN
2 stops26h 45mUnited Airlines
Fri 12/126:00 amSGN - ORD
2 stops25h 50mUnited Airlines
Deal found 12/4$881
This oojo deal was found by Cheapflights users on 12/3. 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.
Mon 12/82:35 pmORD - SGN
1 stop31h 00mCathay Pacific
Thu 12/257:15 amSGN - ORD
1 stop18h 40mCathay Pacific
Deal found 12/3$943
This United Airlines deal was found by Cheapflights users on 12/4. 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.
Sat 12/66:55 amORD - SGN
2 stops27h 00mUnited Airlines
Wed 12/176:00 amSGN - ORD
2 stops27h 25mUnited Airlines
Deal found 12/4$964
This oojo deal was found by Cheapflights users on 12/4. 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.
Fri 12/510:20 amORD - SGN
1 stop30h 35mJapan Airlines
Fri 12/127:50 amSGN - ORD
1 stop36h 40mJapan Airlines
Deal found 12/4$980
This United Airlines deal was found by Cheapflights users on 12/4. 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 12/72:40 pmORD - SGN
3 stops43h 15mUnited Airlines
Mon 12/226:00 amSGN - ORD
2 stops29h 59mUnited Airlines
Deal found 12/4$985
This United Airlines deal was found by Cheapflights users on 12/3. 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 12/83:46 pmORD - SGN
2 stops42h 09mUnited Airlines
Thu 12/2511:05 pmSGN - ORD
1 stop29h 05mUnited Airlines
Deal found 12/3$988
This United Airlines deal was found by Cheapflights users on 12/1. 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.
Tue 12/25:30 pmSTL - SGN
2 stops40h 25mUnited Airlines
Tue 12/96:00 amSGN - STL
3 stops41h 04mUnited Airlines
Deal found 12/1$1,044
This oojo deal was found by Cheapflights users on 12/4. 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.
Fri 12/52:35 pmORD - HAN
1 stop36h 05mCathay Pacific
Thu 12/117:30 pmHAN - ORD
1 stop30h 25mCathay Pacific
Deal found 12/4$1,048
This IEagle deal was found by Cheapflights users on 12/3. 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 IEagle is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/32:35 pmORD - HAN
1 stop36h 05mCathay Pacific
Thu 12/117:30 pmHAN - ORD
1 stop30h 25mCathay Pacific
Deal found 12/3$1,078
This Ovago deal was found by Cheapflights users on 12/3. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/72:35 pmORD - HAN
1 stop30h 30mCathay Pacific
Mon 3/307:05 pmHAN - ORD
1 stop31h 20mCathay Pacific
Deal found 12/3$1,125

Find flight deals from Illinois to Vietnam

Keep the following information in mind while searching for Illinois to Vietnam flight deals. Data was last updated December 4, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$821
(lol.travel)

One-way from

$372
(Kiwi.com)

Popular in

June

Cheapest in

November

Average price

$1,387
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 ($300 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 December 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 December 4, 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

ChicagoDa Nang

ORD - DAD

ORDDAD

Chicago O'Hare Intl

Mon 2/23

2:35 pm-11:40 am

1 stop32h 05m

Da Nang

Wed 3/18

12:25 pm-1:55 pm

1 stop37h 30m

$847

ChicagoHo Chi Minh City

ORD - SGN

ORDSGN

Chicago O'Hare Intl

Thu 2/26

2:35 pm-12:20 am

1 stop20h 45m

Ho Chi Minh City

Tue 3/31

6:20 pm-2:25 pm

1 stop32h 05m

$864

ChicagoHo Chi Minh City

ORD - SGN

ORDSGN

Chicago O'Hare Intl

Thu 4/9

4:00 pm-5:20 pm

1 stop37h 20m

Ho Chi Minh City

Mon 5/4

6:20 pm-2:25 pm

1 stop32h 05m

$864

St. LouisHo Chi Minh City

STL - SGN

STLSGN

Lambert-St Louis

Wed 1/28

9:57 am-9:50 pm

2 stops46h 53m

Ho Chi Minh City

Tue 2/17

11:05 pm-4:44 pm

2 stops30h 39m

$886

St. LouisHo Chi Minh City

STL - SGN

STLSGN

Lambert-St Louis

Wed 1/28

8:05 am-9:50 pm

2 stops48h 45m

Ho Chi Minh City

Wed 2/18

11:05 pm-2:29 pm

2 stops28h 24m

$886

St. LouisHo Chi Minh City

STL - SGN

STLSGN

Lambert-St Louis

Thu 1/29

8:05 am-9:50 pm

2 stops48h 45m

Ho Chi Minh City

Tue 2/17

11:05 pm-7:19 pm

2 stops33h 14m

$886

ChicagoHanoi

ORD - HAN

ORDHAN

Chicago O'Hare Intl

Mon 4/20

11:50 am-10:15 pm

1 stop22h 25m

Hanoi Noibai

Wed 4/29

11:35 pm-12:58 am

2 stops37h 23m

$887

ChicagoHanoi

ORD - HAN

ORDHAN

Chicago O'Hare Intl

Tue 4/21

11:50 am-10:15 pm

1 stop22h 25m

Hanoi Noibai

Wed 4/29

11:35 pm-12:58 am

2 stops37h 23m

$887

ChicagoHo Chi Minh City

ORD - SGN

ORDSGN

Chicago O'Hare Intl

Sat 4/11

4:00 pm-10:05 am

1 stop30h 05m

Ho Chi Minh City

Sun 5/10

6:20 pm-2:25 pm

1 stop32h 05m

$914

ChicagoDa Nang

ORD - DAD

ORDDAD

Chicago O'Hare Intl

Sun 2/22

2:35 pm-9:20 am

1 stop29h 45m

Da Nang

Thu 3/19

12:25 pm-1:55 pm

1 stop37h 30m

$949

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/2

Showing 1-10 of 60 results
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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 December is currently the most expensive (average of $890). 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 December 4, 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 27h 25m. Airlines will cover a distance of 8683 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 $277 on ANA. Other airlines that offer cheap prices include Korean Air from $332 and Cathay Pacific from $375 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 December is currently the most expensive (average of $890). 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

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Alternative routes for Illinois to Vietnam

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from Illinois to Vietnam

Discover the top 10 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 December 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
ANACheapest$624Average$918FlexibilityNo cancel feeOn-time80%
Air IndiaCheapest$632Average$709FlexibilityNo cancel feeOn-timeN/A
Cathay PacificCheapest$662Average$908FlexibilityNo cancel feeOn-time72%
DeltaCheapest$681Average$1,204FlexibilityNo cancel feeOn-timeN/A
Korean AirCheapest$750Average$1,117FlexibilityNo cancel feeOn-time81%
Japan AirlinesCheapest$769Average$1,080FlexibilityNo cancel feeOn-time79%
American AirlinesCheapest$801Average$1,040FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$805Average$1,146FlexibilityNo cancel feeOn-time69%
Turkish AirlinesCheapest$816Average$1,116FlexibilityNo cancel feeOn-time77%
EVA AirCheapest$933Average$1,279FlexibilityNo cancel feeOn-time74%

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