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$503+ 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 11/11. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SGN
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 June 12, 2025.

Round-trip from

$967
(Travelocity)

One-way from

$503
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$1,761
From Lambert-St Louis to Vietnam
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One-way flight from Lambert-St Louis to Vietnam
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($114 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($45 potential savings vs. average RT price).
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Average for round-trip flights in June 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 June 12, 2025.

This Travelocity deal was found by Cheapflights users on 6/10. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/24:01 pmSTL - SGN
2 stops28h 59mMultiple Airlines
Sat 11/85:50 pmSGN - STL
2 stops34h 15mMultiple Airlines
Deal found 6/10$967
This FlightHub deal was found by Cheapflights users on 6/10. 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.
Tue 9/99:55 amSTL - SGN
2 stops23h 50mJapan Airlines
Mon 10/208:20 amSGN - STL
2 stops26h 33mJapan Airlines
Deal found 6/10$984
This oojo deal was found by Cheapflights users on 6/11. 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 9/156:30 pmSTL - HAN
2 stops28h 05mChina Airlines
Mon 9/225:50 pmHAN - STL
2 stops35h 44mChina Airlines
Deal found 6/11$985
This Delta deal was found by Cheapflights users on 6/10. 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 10/293:30 pmSTL - SGN
2 stops42h 45mDelta
Tue 11/188:05 amSGN - STL
2 stops29h 32mDelta
Deal found 6/10$992
This Gurufare deal was found by Cheapflights users on 6/11. 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.
Fri 8/298:20 amSTL - SGN
2 stops25h 35mANA
Fri 9/511:15 pmSGN - STL
2 stops25h 10mANA
Deal found 6/11$993
This United Airlines deal was found by Cheapflights users on 6/10. 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 9/86:15 amSTL - SGN
2 stops27h 40mUnited Airlines
Sun 10/1211:15 pmSGN - STL
2 stops36h 29mUnited Airlines
Deal found 6/10$997
This American Airlines deal was found by Cheapflights users on 6/12. 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.
Wed 11/267:15 amSTL - SGN
2 stops26h 05mAmerican Airlines
Wed 12/1711:45 pmSGN - STL
2 stops31h 34mAmerican Airlines
Deal found 6/12$1,000
This Gurufare deal was found by Cheapflights users on 6/11. 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.
Wed 10/296:45 amSTL - HAN
2 stops28h 20mANA
Wed 11/512:25 amHAN - STL
2 stops48h 48mANA
Deal found 6/11$1,006
This oojo deal was found by Cheapflights users on 6/10. 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.
Thu 10/304:01 pmSTL - HAN
2 stops37h 14mEVA Air
Wed 11/56:20 pmHAN - STL
2 stops42h 38mEVA Air
Deal found 6/10$1,048
This oojo deal was found by Cheapflights users on 6/12. 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 9/83:35 pmSTL - SGN
2 stops32h 05mEVA Air
Sat 10/111:50 amSGN - STL
2 stops58h 09mEVA Air
Deal found 6/12$1,051
This United Airlines deal was found by Cheapflights users on 6/11. 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.
Wed 10/295:29 pmSTL - HAN
3 stops41h 36mUnited Airlines
Wed 11/512:25 amHAN - STL
2 stops29h 38mUnited Airlines
Deal found 6/11$1,105
This Gurufare deal was found by Cheapflights users on 6/11. 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.
Wed 10/19:20 amSTL - DAD
2 stops39h 20mMultiple Airlines
Wed 11/1212:35 amDAD - STL
2 stops46h 52mMultiple Airlines
Deal found 6/11$1,144

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 June 12, 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

Sun 11/2

4:01 pm-10:00 am

2 stops28h 59m

Ho Chi Minh City

Sat 11/8

5:50 pm-3:05 pm

2 stops34h 15m

$967

St. LouisHo Chi Minh City

STL - SGN

STLSGN

Lambert-St Louis

Tue 9/9

9:55 am-9:45 pm

2 stops23h 50m

Ho Chi Minh City

Mon 10/20

8:20 am-10:53 pm

2 stops26h 33m

$984

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Mon 9/15

6:30 pm-10:35 am

2 stops28h 05m

Hanoi Noibai

Mon 9/22

5:50 pm-5:34 pm

2 stops35h 44m

$985

St. LouisHo Chi Minh City

STL - SGN

STLSGN

Lambert-St Louis

Wed 10/29

3:30 pm-10:15 pm

2 stops42h 45m

Ho Chi Minh City

Tue 11/18

8:05 am-12:37 am

2 stops29h 32m

$992

St. LouisHo Chi Minh City

STL - SGN

STLSGN

Lambert-St Louis

Fri 8/29

8:20 am-9:55 pm

2 stops25h 35m

Ho Chi Minh City

Fri 9/5

11:15 pm-12:25 pm

2 stops25h 10m

$993

St. LouisHo Chi Minh City

STL - SGN

STLSGN

Lambert-St Louis

Mon 9/8

6:15 am-9:55 pm

2 stops27h 40m

Ho Chi Minh City

Sun 10/12

11:15 pm-11:44 pm

2 stops36h 29m

$997

St. LouisHo Chi Minh City

STL - SGN

STLSGN

Lambert-St Louis

Wed 11/26

7:15 am-10:20 pm

2 stops26h 05m

Ho Chi Minh City

Wed 12/17

11:45 pm-6:19 pm

2 stops31h 34m

$1,000

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Wed 10/29

6:45 am-11:05 pm

2 stops28h 20m

Hanoi Noibai

Wed 11/5

12:25 am-12:13 pm

2 stops48h 48m

$1,006

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Thu 10/30

4:01 pm-5:15 pm

2 stops37h 14m

Hanoi Noibai

Wed 11/5

6:20 pm-11:58 pm

2 stops42h 38m

$1,048

St. LouisHo Chi Minh City

STL - SGN

STLSGN

Lambert-St Louis

Mon 9/8

3:35 pm-11:40 am

2 stops32h 05m

Ho Chi Minh City

Sat 10/11

1:50 am-11:59 pm

2 stops58h 09m

$1,051

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 32 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 $920). Flying from St. Louis to Vietnam in June is currently the most expensive (average of $1,475). 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 June 12, 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 June 12, 2025.
Read through reviews of airlines operating flights from St. Louis to Vietnam, such as EVA Air, Korean Air and Japan Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
EVA Air
8.4
Very good
1,202 reviews

Food

8.1

Boarding

8.4

Crew

8.6

Entertainment

8.0

Comfort

8.3

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
EVA Air
8.4
Very good
1,202 reviews
EVA Air
8.4
Very good
1,202 reviews

Food

8.1

Boarding

8.4

Crew

8.6

Entertainment

8.0

Comfort

8.3

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
Korean Air
8.4
Very good
1,088 reviews
EVA Air
8.4
Very good
1,202 reviews

Food

8.1

Boarding

8.4

Crew

8.6

Entertainment

8.0

Comfort

8.3

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
Japan Airlines
8.3
Very good
1,489 reviews
EVA Air
8.4
Very good
1,202 reviews

Food

8.1

Boarding

8.4

Crew

8.6

Entertainment

8.0

Comfort

8.3

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
China Airlines
8.3
Very good
738 reviews
EVA Air
8.4
Very good
1,202 reviews

Food

8.1

Boarding

8.4

Crew

8.6

Entertainment

8.0

Comfort

8.3

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
ANA
8.3
Very good
882 reviews
EVA Air
8.4
Very good
1,202 reviews

Food

8.1

Boarding

8.4

Crew

8.6

Entertainment

8.0

Comfort

8.3

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount

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?

    $518 is the cheapest one-way deal found within the past few days, from Japan Airlines. You may also be able to find cheap deals on United Airlines and American Airlines, with prices starting from $527 and $531, 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 $920). Flying from St. Louis to Vietnam in June is currently the most expensive (average of $1,475). 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Korean AirCheapest$761Average$1,724FlexibilityNo cancel feeOn-time81%
DeltaCheapest$920Average$1,605FlexibilityNo cancel feeOn-timeN/A
ANACheapest$988Average$1,241FlexibilityNo cancel feeOn-time80%
Japan AirlinesCheapest$994Average$1,208FlexibilityNo cancel feeOn-time79%
United AirlinesCheapest$995Average$1,284FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$1,042Average$1,214FlexibilityNo cancel feeOn-time71%
Turkish AirlinesCheapest$1,065Average$1,076FlexibilityNo cancel feeOn-time77%
Cathay PacificCheapest$1,246Average$1,388FlexibilityNo cancel feeOn-time72%
Air CanadaCheapest$1,437Average$1,761FlexibilityNo cancel feeOn-time67%

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