$355+ 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 2/6. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SGN
Dec 12 — Dec 191
1 adult, Economy
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Cheapest flights from St. Louis to VietnamExplore 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 November 12, 2025.
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 November 12, 2025.
This United Airlines deal was found by Cheapflights users on 11/11. 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 12/35:30 pmSTL - SGN
2 stops40h 25mUnited Airlines
Wed 12/107:30 amSGN - STL
2 stops21h 58mUnited Airlines
Deal found 11/11![United Airlines logo]()
$931
This United Airlines deal was found by Cheapflights users on 11/9. 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 11/106:43 pmSTL - SGN
3 stops39h 12mUnited Airlines
Tue 11/186:00 amSGN - STL
3 stops29h 45mUnited Airlines
Deal found 11/9![United Airlines logo]()
$935
This oojo deal was found by Cheapflights users on 11/9. 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 11/107:00 amSTL - SGN
2 stops28h 20mCathay Pacific
Tue 11/181:50 pmSGN - STL
2 stops46h 09mCathay Pacific
Deal found 11/9![Cathay Pacific logo]()
$936
This United Airlines deal was found by Cheapflights users on 11/9. 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 11/119:00 amSTL - SGN
2 stops26h 15mUnited Airlines
Tue 11/186:00 amSGN - STL
3 stops41h 39mUnited Airlines
Deal found 11/9![United Airlines logo]()
$939
This Mytrip deal was found by Cheapflights users on 11/9. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/108:00 amSTL - SGN
2 stops48h 50mANA
Tue 11/1811:05 pmSGN - STL
2 stops50h 23mANA
Deal found 11/9![ANA logo]()
$954
This oojo deal was found by Cheapflights users on 11/9. 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 11/107:00 amSTL - SGN
2 stops39h 35mEVA Air
Mon 11/171:55 amSGN - STL
2 stops50h 23mEVA Air
Deal found 11/9![EVA Air logo]()
$1,011
This United Airlines deal was found by Cheapflights users on 11/11. 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.
Tue 12/910:00 amSTL - SGN
2 stops46h 50mUnited Airlines
Thu 12/187:30 amSGN - STL
2 stops27h 52mUnited Airlines
Deal found 11/11![United Airlines logo]()
$1,023
This United Airlines deal was found by Cheapflights users on 11/9. 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 11/199:00 amSTL - SGN
2 stops26h 15mUnited Airlines
Sun 11/236:00 amSGN - STL
3 stops29h 22mUnited Airlines
Deal found 11/9![United Airlines logo]()
$1,025
This Delta deal was found by Cheapflights users on 11/10. 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.
Thu 11/136:00 amSTL - DAD
2 stops26h 30mDelta
Mon 11/1711:20 pmDAD - STL
2 stops35h 38mDelta
Deal found 11/10![Delta logo]()
$1,121
This Japan Airlines deal was found by Cheapflights users on 11/10. 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 Japan Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/126:00 amSTL - HAN
2 stops27h 30mJapan Airlines
Sun 11/1611:55 pmHAN - STL
2 stops37h 04mJapan Airlines
Deal found 11/10![Japan Airlines logo]()
$1,158
This Cathay Pacific deal was found by Cheapflights users on 11/9. 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/127:00 amSTL - HAN
2 stops38h 05mCathay Pacific
Sun 11/167:30 pmHAN - STL
2 stops40h 28mCathay Pacific
Deal found 11/9![Cathay Pacific logo]()
$1,342
This Qatar Airways deal was found by Cheapflights users on 11/9. 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.
Wed 11/126:00 amSTL - HAN
2 stops41h 20mQatar Airways
Sat 11/153:00 amHAN - STL
2 stops33h 56mQatar Airways
Deal found 11/9![Qatar Airways logo]()
$2,272
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 November 12, 2025.
Most accurate provider | CheapOair 3 stars |
|---|---|
Most trusted provider | CheapOair 3 stars |
Round-trip from | $877 (oojo) |
One-way from | $355 (Kiwi.com) |
Popular in | December |
Cheapest in | November |
Average price | $985 |
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 November 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
Tue 1/20
3:20 pm-5:55 am
2 stops25h 35m
Ho Chi Minh City
Wed 2/4
11:45 pm-6:14 pm
2 stops31h 29m
$902
St. LouisHo Chi Minh City
STL - SGN
STLSGN
Lambert-St Louis
Tue 1/20
2:50 pm-4:50 pm
2 stops37h 00m
Ho Chi Minh City
Mon 4/27
10:50 am-2:11 pm
2 stops39h 21m
$910
St. LouisHo Chi Minh City
STL - SGN
STLSGN
Lambert-St Louis
Thu 1/22
2:50 pm-10:30 am
2 stops30h 40m
Ho Chi Minh City
Fri 1/30
5:50 pm-1:54 pm
2 stops57h 04m
$925
St. LouisHo Chi Minh City
STL - SGN
STLSGN
Lambert-St Louis
Wed 12/3
5:30 pm-10:55 pm
2 stops40h 25m
Ho Chi Minh City
Wed 12/10
7:30 am-4:28 pm
2 stops21h 58m
$931
St. LouisHo Chi Minh City
STL - SGN
STLSGN
Lambert-St Louis
Mon 1/19
7:04 am-10:35 am
2 stops38h 31m
Ho Chi Minh City
Mon 4/27
11:05 am-11:24 pm
2 stops48h 19m
$936
St. LouisHo Chi Minh City
STL - SGN
STLSGN
Lambert-St Louis
Mon 2/9
2:50 pm-4:45 pm
2 stops36h 55m
Ho Chi Minh City
Mon 3/9
5:50 pm-1:51 pm
2 stops56h 01m
$951
St. LouisHo Chi Minh City
STL - SGN
STLSGN
Lambert-St Louis
Tue 1/20
4:35 pm-10:55 pm
3 stops41h 20m
Ho Chi Minh City
Wed 2/4
11:05 pm-7:27 pm
2 stops33h 22m
$970
St. LouisHo Chi Minh City
STL - SGN
STLSGN
Lambert-St Louis
Tue 1/20
2:50 pm-11:35 am
2 stops31h 45m
Ho Chi Minh City
Sun 4/26
1:50 am-11:55 pm
2 stops58h 05m
$971
St. LouisHo Chi Minh City
STL - SGN
STLSGN
Lambert-St Louis
Sun 1/11
6:40 pm-10:55 pm
3 stops39h 15m
Ho Chi Minh City
Thu 1/29
7:30 am-4:55 pm
2 stops22h 25m
$973
St. LouisHo Chi Minh City
STL - SGN
STLSGN
Lambert-St Louis
Sun 1/11
6:40 pm-10:55 pm
3 stops39h 15m
Ho Chi Minh City
Wed 1/28
7:30 am-10:00 pm
2 stops27h 30m
$973
Showing 1-10 of 40 results
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, July is the cheapest month in which you can book a flight from St. Louis to Vietnam (average of $549). Flying from St. Louis to Vietnam in June is currently the most expensive (average of $1,349). 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 November 12, 2025.
Unlike at noon, when flights are generally more expensive, you can save up to 40% on flights from St. Louis to Vietnam by exploring options for tickets in the morning.
What is the cheapest day to fly from St. Louis to Vietnam?
Use this chart to determine the cheapest time to fly round-trip from St. Louis to Vietnam. Price data was last updated on December 16, 2024.
Travelers seeking maximum savings on their St. Louis to Vietnam flight should consider departing on Wednesday afternoons when fares are most often at their lowest. Monday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
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 November 12, 2025.
Read through reviews of airlines operating flights from St. Louis to Vietnam, such as ANA, Japan Airlines, and Delta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.6
Entertainment
7.9
Comfort
8.2
Overall
8.4
Crew
8.7
Food
7.7
Reviews
1 / 20
10.0
ExcellentJulie,Sep 2025
CGK - HND
Boarding
8.6
Entertainment
7.9
Comfort
8.2
Overall
8.4
Crew
8.7
Food
7.7
Reviews
1 / 20
10.0
ExcellentJulie,Sep 2025
CGK - HND
Boarding
8.6
Entertainment
7.9
Comfort
8.2
Overall
8.4
Crew
8.7
Food
7.7
Reviews
1 / 20
10.0
ExcellentJulie,Sep 2025
CGK - HND
Boarding
8.6
Entertainment
7.9
Comfort
8.2
Overall
8.4
Crew
8.7
Food
7.7
Reviews
1 / 20
10.0
ExcellentJulie,Sep 2025
CGK - HND
Boarding
8.6
Entertainment
7.9
Comfort
8.2
Overall
8.4
Crew
8.7
Food
7.7
Reviews
1 / 20
10.0
ExcellentJulie,Sep 2025
CGK - HND
Boarding
8.6
Entertainment
7.9
Comfort
8.2
Overall
8.4
Crew
8.7
Food
7.7
Reviews
1 / 20
10.0
ExcellentJulie,Sep 2025
CGK - HND
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.
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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.
Top 10 airlines flying from St. Louis to Vietnam
Discover the top 10 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 November 12, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$761 | Average$1,313 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$915 | Average$1,344 | FlexibilityNo cancel fee | On-time72% | |
| Cheapest$928 | Average$994 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$949 | Average$1,116 | FlexibilityNo cancel fee | On-time79% | |
| Cheapest$962 | Average$1,219 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$966 | Average$1,087 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$986 | Average$1,076 | FlexibilityNo cancel fee | On-time80% | |
| Cheapest$990 | Average$1,341 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$1,008 | Average$1,362 | FlexibilityNo cancel fee | On-time74% | |
| Cheapest$1,437 | Average$1,761 | FlexibilityNo cancel fee | On-time67% |