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$549+ 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 7/10. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SGN
4月 8 — 4月 151
週二 4/8
週二 4/15
1 adult, Economy
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Cheap flight deals from St. Louis to Vietnam

Keep the following information in mind while searching for St. Louis to Vietnam flight deals. Data was last updated 4月 3, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$996
(Delta)

One-way from

$549
(United)

Popular in

June

Cheapest in

April

Average price

$1,117
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 ($310 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($48 potential savings vs. average RT price).
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Average for round-trip flights in April 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 4月 3, 2025.

This Gurufare deal was found by Cheapflights users on 4/2. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
週一 9/88:20 amSTL - SGN
2 stops25h 35mANA
週一 9/2911:15 pmSGN - STL
2 stops27h 03mANA
Deal found 4/2$988
This Delta deal was found by Cheapflights users on 4/2. 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.
週日 4/205:34 pmSTL - SGN
2 stops40h 31mDelta
週四 5/227:35 amSGN - STL
2 stops28h 03mDelta
Deal found 4/2$996
This United Airlines deal was found by Cheapflights users on 4/2. 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.
週一 9/88:25 amSTL - SGN
2 stops25h 30mUnited Airlines
週日 10/1211:15 pmSGN - STL
2 stops49h 05mUnited Airlines
Deal found 4/2$1,002
This EVA Air deal was found by Cheapflights users on 4/2. 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 EVA Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
週三 11/52:55 pmSTL - DAD
2 stops31h 45mMultiple Airlines
週五 11/141:00 pmDAD - STL
2 stops37h 52mMultiple Airlines
Deal found 4/2$1,112
This EVA Air deal was found by Cheapflights users on 4/2. 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 EVA Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
週一 9/87:36 pmSTL - SGN
2 stops28h 04mMultiple Airlines
週日 9/281:50 amSGN - STL
2 stops34h 37mMultiple Airlines
Deal found 4/2$1,197
This Gurufare deal was found by Cheapflights users on 4/2. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
週三 11/56:15 amSTL - DAD
2 stops42h 00mANA
週四 11/1312:35 amDAD - STL
2 stops48h 45mANA
Deal found 4/2$1,323
This American Airlines deal was found by Cheapflights users on 4/2. 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.
週一 4/145:26 amSTL - SGN
2 stops28h 34mAmerican Airlines
週五 4/188:20 amSGN - STL
2 stops23h 09mAmerican Airlines
Deal found 4/2$1,387
This Fareboom deal was found by Cheapflights users on 4/2. 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 Fareboom is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
週一 4/143:11 pmSTL - SGN
2 stops32h 29mEVA Air
週四 4/171:50 amSGN - STL
2 stops27h 02mEVA Air
Deal found 4/2$1,428
This EVA Air deal was found by Cheapflights users on 4/2. 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 EVA Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
週二 4/83:11 pmSTL - HAN
2 stops31h 54mMultiple Airlines
週二 4/296:00 pmHAN - STL
2 stops32h 08mMultiple Airlines
Deal found 4/2$1,538
This Ovago deal was found by Cheapflights users on 4/2. 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.
週三 11/53:15 pmSTL - DAD
3 stops41h 15mEmirates
週五 11/1411:30 pmDAD - STL
3 stops32h 55mEmirates
Deal found 4/2$1,807
This KAYAK deal was found by Cheapflights users on 4/2. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
週五 5/3010:31 amSTL - SGN
2 stops35h 34mCathay Pacific
週二 8/2611:05 amSGN - STL
2 stops23h 25mCathay Pacific
Deal found 4/2$1,823
This Air Canada deal was found by Cheapflights users on 4/2. 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.
週日 6/81:30 pmSTL - SGN
2 stops46h 45mAir Canada
週三 6/2512:05 amSGN - STL
2 stops48h 31mAir Canada
Deal found 4/2$2,053

Cheapflights Fare Finder

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 4月 3, 2025.
Use the filters below to find and compare flights from St. Louis to Vietnam that are best for you.

Fly from

St. Louis

Fly to

Vietnam

Route

Depart

Return

Price

St. LouisHo Chi Minh City

STL - SGN

STLSGN

Lambert-St Louis

週一 9/8

8:20 am-9:55 pm

2 stops25h 35m

Ho Chi Minh City

週一 9/29

11:15 pm-2:18 pm

2 stops27h 03m

$988

St. LouisHo Chi Minh City

STL - SGN

STLSGN

Lambert-St Louis

週日 4/20

5:34 pm-10:05 pm

2 stops40h 31m

Ho Chi Minh City

週四 5/22

7:35 am-11:38 pm

2 stops28h 03m

$996

St. LouisHo Chi Minh City

STL - SGN

STLSGN

Lambert-St Louis

週一 9/8

8:25 am-9:55 pm

2 stops25h 30m

Ho Chi Minh City

週日 10/12

11:15 pm-12:20 pm

2 stops49h 05m

$1,002

St. LouisHo Chi Minh City

STL - SGN

STLSGN

Lambert-St Louis

週一 9/8

7:36 pm-11:40 am

2 stops28h 04m

Ho Chi Minh City

週日 9/28

1:50 am-12:27 am

2 stops34h 37m

$1,197

St. LouisHo Chi Minh City

STL - SGN

STLSGN

Lambert-St Louis

週一 4/14

5:26 am-10:00 pm

2 stops28h 34m

Ho Chi Minh City

週五 4/18

8:20 am-7:29 pm

2 stops23h 09m

$1,387

St. LouisHo Chi Minh City

STL - SGN

STLSGN

Lambert-St Louis

週一 4/14

3:11 pm-11:40 am

2 stops32h 29m

Ho Chi Minh City

週四 4/17

1:50 am-4:52 pm

2 stops27h 02m

$1,428

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

週二 4/8

3:11 pm-11:05 am

2 stops31h 54m

Hanoi Noibai

週二 4/29

6:00 pm-2:08 pm

2 stops32h 08m

$1,538

St. LouisHo Chi Minh City

STL - SGN

STLSGN

Lambert-St Louis

週五 5/30

10:31 am-10:05 am

2 stops35h 34m

Ho Chi Minh City

週二 8/26

11:05 am-10:30 pm

2 stops23h 25m

$1,823

St. LouisHo Chi Minh City

STL - SGN

STLSGN

Lambert-St Louis

週日 6/8

1:30 pm-12:15 am

2 stops46h 45m

Ho Chi Minh City

週三 6/25

12:05 am-12:36 pm

2 stops48h 31m

$2,053

St. LouisHo Chi Minh City

STL - SGN

STLSGN

Lambert-St Louis

週六 5/10

2:20 pm-7:40 am

2 stops29h 20m

Ho Chi Minh City

週二 8/26

8:00 pm-4:08 pm

2 stops32h 08m

$2,184

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/2

Showing 1-10 of 21 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.

Cheapflights Insights

Everything you need to know about your flight from St. Louis to Vietnam

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

Currently, March is the cheapest month in which you can book a flight from St. Louis to Vietnam (average of $922). Flying from St. Louis to Vietnam in June is currently the most expensive (average of $1,566). 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 4月 3, 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 4月 3, 2025.
EVA Air
8.4
Very good
1,170 reviews

Food

8.1

Overall

8.4

Comfort

8.3

Boarding

8.4

Entertainment

8.0

Crew

8.6

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.
EVA Air
8.4
Very good
1,170 reviews
EVA Air
8.4
Very good
1,170 reviews

Food

8.1

Overall

8.4

Comfort

8.3

Boarding

8.4

Entertainment

8.0

Crew

8.6

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.
Korean Air
8.4
Very good
1,052 reviews
EVA Air
8.4
Very good
1,170 reviews

Food

8.1

Overall

8.4

Comfort

8.3

Boarding

8.4

Entertainment

8.0

Crew

8.6

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.
Japan Airlines
8.3
Very good
1,441 reviews
EVA Air
8.4
Very good
1,170 reviews

Food

8.1

Overall

8.4

Comfort

8.3

Boarding

8.4

Entertainment

8.0

Crew

8.6

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.
ANA
8.3
Very good
830 reviews
EVA Air
8.4
Very good
1,170 reviews

Food

8.1

Overall

8.4

Comfort

8.3

Boarding

8.4

Entertainment

8.0

Crew

8.6

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.
Delta
8.0
Very good
7,897 reviews
EVA Air
8.4
Very good
1,170 reviews

Food

8.1

Overall

8.4

Comfort

8.3

Boarding

8.4

Entertainment

8.0

Crew

8.6

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.

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 cheapest airlines to fly from St. Louis to Vietnam one-way?

    $853 is the cheapest one-way deal found within the past few days, from United Airlines. You may also be able to find cheap deals on Delta and Cathay Pacific, with prices starting from $1,002 and $1,085, respectively.

  • 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, March is the cheapest month in which you can book a flight from St. Louis to Vietnam (average of $922). Flying from St. Louis to Vietnam in June is currently the most expensive (average of $1,566). 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

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Top 8 airlines flying from St. Louis to Vietnam

Discover the top 8 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 4月 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$990Average$1,535FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$999Average$1,284FlexibilityNo cancel feeOn-time69%
ANACheapest$1,020Average$1,273FlexibilityNo cancel feeOn-time80%
Japan AirlinesCheapest$1,062Average$1,241FlexibilityNo cancel feeOn-time79%
Turkish AirlinesCheapest$1,065Average$1,076FlexibilityNo cancel feeOn-time77%
American AirlinesCheapest$1,070Average$1,215FlexibilityNo cancel feeOn-time71%
Korean AirCheapest$1,124Average$2,080FlexibilityNo cancel feeOn-time81%
Cathay PacificCheapest$1,246Average$1,359FlexibilityNo cancel feeOn-time72%

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