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$538+ Cheap flights from St. Louis (STL) 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 3/26. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SGN
feb. 4 — feb. 111
mar. 2/4
mar. 2/11
1 adult, Economy
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Cheap flight deals from St. Louis to Vietnam

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Vietnam (VN0). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated enero 30, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,095
(Expedia)

One-way from

$538
(Delta)

Popular in

June

Cheapest in

April

Average price

$1,338
Provider with most accurate pricing for Lambert-St Louis-Ho Chi Minh City flight deals.
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Provider most trusted by Cheapflights users for Lambert-St Louis-Ho Chi Minh City flights.
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From Lambert-St Louis to Vietnam
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One-way flight from Lambert-St Louis to Vietnam
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Highest demand for flights based on searches. 18% potential increase in price ($320 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($47 potential savings vs. average RT price).
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Average for round-trip flights in January 2025
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Find flight deals from St. Louis to Vietnam

Cheapest flights from St. Louis to Vietnam
Explore the most affordable flight options available from St. Louis to Vietnam. Find the lowest fares from popular airlines and budget airlines, with prices last updated on enero 30, 2025.

This Expedia deal was found by Cheapflights users on 1/30. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 2/236:36 pmSTL - SGN
2 stops46h 14mJapan Airlines
mié. 3/127:50 amSGN - STL
2 stops27h 19mJapan Airlines
Deal found 1/30$1,095
This Delta deal was found by Cheapflights users on 1/29. 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.
mié. 2/127:15 amSTL - SGN
2 stops50h 00mDelta
mié. 3/122:05 pmSGN - STL
2 stops45h 26mDelta
Deal found 1/29$1,140
This Korean Air deal was found by Cheapflights users on 1/29. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 4/1911:19 amSTL - SGN
2 stops22h 46mMultiple Airlines
jue. 4/247:35 amSGN - STL
2 stops27h 55mMultiple Airlines
Deal found 1/29$1,185
This American Airlines deal was found by Cheapflights users on 1/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 2/179:29 amSTL - SGN
2 stops31h 21mAmerican Airlines
jue. 3/67:50 amSGN - STL
2 stops28h 13mAmerican Airlines
Deal found 1/30$1,216
This Justfly.com deal was found by Cheapflights users on 1/29. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 2/101:02 pmSTL - SGN
2 stops43h 48mANA
dom. 3/911:05 pmSGN - STL
2 stops28h 11mANA
Deal found 1/29$1,224
This United Airlines deal was found by Cheapflights users on 1/30. 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.
mar. 2/116:30 amSTL - SGN
2 stops50h 20mUnited Airlines
mar. 3/2511:05 pmSGN - STL
2 stops36h 28mUnited Airlines
Deal found 1/30$1,226
This United deal was found by Cheapflights users on 1/30. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 3/187:30 amSTL - HAN
2 stops27h 35mUnited Airlines
mié. 5/1411:35 pmHAN - STL
2 stops35h 10mUnited Airlines
Deal found 1/30$1,237
This Asiana Airlines deal was found by Cheapflights users on 1/30. 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 Asiana Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 4/85:54 pmSTL - HAN
2 stops30h 21mMultiple Airlines
mar. 4/2911:30 pmHAN - STL
2 stops36h 29mMultiple Airlines
Deal found 1/30$1,242
This Ovago deal was found by Cheapflights users on 1/30. 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.
lun. 2/36:03 amSTL - SGN
2 stops39h 32mCathay Pacific
mié. 3/267:35 pmSGN - STL
2 stops34h 24mCathay Pacific
Deal found 1/30$1,384
This Air Canada deal was found by Cheapflights users on 1/30. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 9/81:30 pmSTL - SGN
2 stops46h 15mAir Canada
dom. 10/1212:10 amSGN - STL
2 stops55h 23mAir Canada
Deal found 1/30$1,456
This Korean Air deal was found by Cheapflights users on 1/29. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 2/97:15 amSTL - SGN
2 stops26h 00mKorean Air
vie. 3/142:05 pmSGN - STL
2 stops45h 26mKorean Air
Deal found 1/29$1,654
This Qatar Airways deal was found by Cheapflights users on 1/29. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 2/109:25 amSTL - SGN
2 stops32h 50mQatar Airways
vie. 3/148:55 amSGN - STL
2 stops60h 03mQatar Airways
Deal found 1/29$1,721

Find flights from St. Louis to Vietnam within your budget

Customize your flight search to find flights from St. Louis 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 enero 30, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

St. LouisHo Chi Minh City

STL - SGN

STLSGN

Lambert-St Louis

dom. 2/23

6:36 pm-5:50 am

2 stops46h 14m

Ho Chi Minh City

mié. 3/12

7:50 am-11:09 pm

2 stops27h 19m

$1,095

St. LouisHo Chi Minh City

STL - SGN

STLSGN

Lambert-St Louis

mié. 2/12

7:15 am-10:15 pm

2 stops50h 00m

Ho Chi Minh City

mar. 3/11

2:05 pm-11:03 pm

2 stops44h 58m

$1,140

St. LouisHo Chi Minh City

STL - SGN

STLSGN

Lambert-St Louis

sáb. 4/19

11:19 am-10:05 pm

2 stops22h 46m

Ho Chi Minh City

jue. 4/24

7:35 am-11:30 pm

2 stops27h 55m

$1,185

St. LouisHo Chi Minh City

STL - SGN

STLSGN

Lambert-St Louis

lun. 2/17

9:29 am-5:50 am

2 stops31h 21m

Ho Chi Minh City

jue. 3/6

7:50 am-11:03 pm

2 stops28h 13m

$1,216

St. LouisHo Chi Minh City

STL - SGN

STLSGN

Lambert-St Louis

lun. 2/10

1:02 pm-9:50 pm

2 stops43h 48m

Ho Chi Minh City

dom. 3/9

11:05 pm-3:16 pm

2 stops28h 11m

$1,224

St. LouisHo Chi Minh City

STL - SGN

STLSGN

Lambert-St Louis

mar. 2/11

6:30 am-9:50 pm

2 stops50h 20m

Ho Chi Minh City

lun. 3/17

11:05 pm-11:32 pm

2 stops36h 27m

$1,226

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

mar. 3/18

7:30 am-11:05 pm

2 stops27h 35m

Hanoi Noibai

mié. 5/14

11:35 pm-10:45 pm

2 stops35h 10m

$1,237

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

mar. 4/8

5:54 pm-12:15 pm

2 stops30h 21m

Hanoi Noibai

mar. 4/29

11:30 pm-11:59 pm

2 stops36h 29m

$1,242

St. LouisHo Chi Minh City

STL - SGN

STLSGN

Lambert-St Louis

lun. 2/10

6:03 am-10:35 am

2 stops39h 32m

Ho Chi Minh City

sáb. 3/8

7:35 pm-10:09 pm

2 stops39h 34m

$1,449

St. LouisHo Chi Minh City

STL - SGN

STLSGN

Lambert-St Louis

dom. 2/9

7:15 am-10:15 pm

2 stops26h 00m

Ho Chi Minh City

vie. 3/14

2:05 pm-11:31 pm

2 stops45h 26m

$1,654

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/29

Showing 1-10 of 17 results
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Best time to book a flight from St. Louis to Vietnam

Have a flexible travel schedule? Discover the best time to fly to Vietnam from St. Louis 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.

Travel insights for flights from St. Louis to Vietnam

Get recent, data-driven insights about flights from St. Louis to Vietnam including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from St. Louis to Vietnam?

Currently, November is the cheapest month in which you can book a flight from St. Louis to Vietnam (average of $936). Flying from St. Louis to Vietnam in June is currently the most expensive (average of $1,621). 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 STL to VN?

Find hourly flight availability from St. Louis 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 enero 30, 2025.

When flying from St. Louis to Vietnam, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Vietnam by month

Plan your trip to Vietnam by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Vietnam ranges from 0.0 - 13.4 inches per month. September is typically the wettest month, when rainfall can reach 13.4 in. February is typically the driest time to visit Vietnam when rainfall is around 0.0 in.

Temperature in Vietnam by month

Plan your trip to Vietnam by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Vietnam, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 86.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 78.8 F).

Reviews of airlines servicing Vietnam

Get insights into the airlines that provide service to Vietnam. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Vietnam. Reviews last updated enero 30, 2025.
Read through reviews of airlines operating flights from St. Louis to Vietnam, such as Korean Air, ANA and Japan Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.5
Very good
1,034 reviews

Entertainment

8.2

Overall

8.5

Crew

8.7

Boarding

8.5

Food

8.1

Comfort

8.3

Reviews

1 / 20

10.0
Excellent

David,Dec 2024

JFK - MCO

Flight was short, so we did not get food, but that is expected. Only have entertainment a fair rating because no wifi is provided onboard. Good flight overall.

Korean Air
8.5
Very good
1,034 reviews
Korean Air
8.5
Very good
1,034 reviews

Entertainment

8.2

Overall

8.5

Crew

8.7

Boarding

8.5

Food

8.1

Comfort

8.3

Reviews

1 / 20

10.0
Excellent

David,Dec 2024

JFK - MCO

Flight was short, so we did not get food, but that is expected. Only have entertainment a fair rating because no wifi is provided onboard. Good flight overall.

ANA
8.4
Very good
844 reviews
Korean Air
8.5
Very good
1,034 reviews

Entertainment

8.2

Overall

8.5

Crew

8.7

Boarding

8.5

Food

8.1

Comfort

8.3

Reviews

1 / 20

10.0
Excellent

David,Dec 2024

JFK - MCO

Flight was short, so we did not get food, but that is expected. Only have entertainment a fair rating because no wifi is provided onboard. Good flight overall.

Japan Airlines
8.3
Very good
1,445 reviews
Korean Air
8.5
Very good
1,034 reviews

Entertainment

8.2

Overall

8.5

Crew

8.7

Boarding

8.5

Food

8.1

Comfort

8.3

Reviews

1 / 20

10.0
Excellent

David,Dec 2024

JFK - MCO

Flight was short, so we did not get food, but that is expected. Only have entertainment a fair rating because no wifi is provided onboard. Good flight overall.

Delta
8.0
Very good
8,450 reviews
Korean Air
8.5
Very good
1,034 reviews

Entertainment

8.2

Overall

8.5

Crew

8.7

Boarding

8.5

Food

8.1

Comfort

8.3

Reviews

1 / 20

10.0
Excellent

David,Dec 2024

JFK - MCO

Flight was short, so we did not get food, but that is expected. Only have entertainment a fair rating because no wifi is provided onboard. Good flight overall.

Qatar Airways
7.5
Good
3,715 reviews
Korean Air
8.5
Very good
1,034 reviews

Entertainment

8.2

Overall

8.5

Crew

8.7

Boarding

8.5

Food

8.1

Comfort

8.3

Reviews

1 / 20

10.0
Excellent

David,Dec 2024

JFK - MCO

Flight was short, so we did not get food, but that is expected. Only have entertainment a fair rating because no wifi is provided onboard. Good flight overall.

Related info for your journey

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

  • What airport do you fly from for flights from St. Louis to Vietnam?

    Located just 12.7 mi from the city center, Lambert-St Louis (STL) is the airport most travelers will use when flying to Vietnam from St. Louis.

  • What are the most popular routes from St. Louis to Vietnam?

    The most popular route from St. Louis to Vietnam is Lambert-St Louis - Ho Chi Minh City. You may also consider Lambert-St Louis - Hanoi Noibai or Lambert-St Louis - Da Nang.

  • Can I find deals for flights from St. Louis to Vietnam that include hotel bookings?

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

  • How can I find direct flights from St. Louis to Vietnam?

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

  • Can I find deals for business class flights from St. Louis to Vietnam?

    Yes. Cheapflights offers flight deals from St. Louis 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 St. Louis to Vietnam?

    Currently, November is the cheapest month in which you can book a flight from St. Louis to Vietnam (average of $936). Flying from St. Louis to Vietnam in June is currently the most expensive (average of $1,621). 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 St. Louis to Vietnam

See prices for flight routes from nearby airports that may be better suited for you.
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Top 9 airlines flying from St. Louis to Vietnam

Discover the top 9 airlines that operate flights from St. Louis 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 enero 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$1,034Average$1,405FlexibilityNo cancel feeOn-time69%
Turkish AirlinesCheapest$1,065Average$1,076FlexibilityNo cancel feeOn-time77%
DeltaCheapest$1,068Average$1,755FlexibilityNo cancel feeOn-timeN/A
Japan AirlinesCheapest$1,088Average$1,260FlexibilityNo cancel feeOn-time79%
ANACheapest$1,113Average$1,282FlexibilityNo cancel feeOn-time80%
American AirlinesCheapest$1,123Average$1,225FlexibilityNo cancel feeOn-time71%
Qatar AirwaysCheapest$1,215Average$1,598FlexibilityNo cancel feeOn-time68%
Cathay PacificCheapest$1,246Average$1,370FlexibilityNo cancel feeOn-time72%
Korean AirCheapest$1,313Average$2,138FlexibilityNo cancel feeOn-time81%
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