$416+ 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 2/18. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SGN
Mar 14 — Mar 211
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from St. Louis to Vietnam with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from St. Louis to Vietnam
Cheapest
Best
Last-minute
One-way
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 February 12, 2026.
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 February 12, 2026.
This FlightHub deal was found by Cheapflights users on 2/11. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/39:23 am
STL
- SGN
2 stops26h 52m
ANA
Mon 9/1411:15 pm
SGN
- STL
2 stops27h 04m
ANA
Deal found 2/11![ANA logo]()
$818
This United Airlines deal was found by Cheapflights users on 2/11. 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.
Mon 8/38:15 pm
STL
- SGN
3 stops37h 50m
United Airlines
Mon 9/1411:15 pm
SGN
- STL
2 stops30h 38m
United Airlines
Deal found 2/11![United Airlines logo]()
$821
This United Airlines deal was found by Cheapflights users on 2/10. 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 8/176:15 am
STL
- SGN
2 stops27h 40m
United Airlines
Mon 8/3111:15 pm
SGN
- STL
2 stops46h 33m
United Airlines
Deal found 2/10![United Airlines logo]()
$823
This United Airlines deal was found by Cheapflights users on 2/9. 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.
Sun 9/275:18 pm
STL
- SGN
3 stops40h 47m
United Airlines
Thu 10/17:00 am
SGN
- STL
2 stops28h 43m
United Airlines
Deal found 2/9![United Airlines logo]()
$824
This United Airlines deal was found by Cheapflights users on 2/11. 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.
Sun 4/510:00 am
STL
- SGN
3 stops48h 05m
United Airlines
Wed 5/67:00 am
SGN
- STL
3 stops26h 52m
United Airlines
Deal found 2/11![United Airlines logo]()
$832
This United Airlines deal was found by Cheapflights users on 2/9. 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.
Sun 4/194:49 pm
STL
- SGN
2 stops43h 26m
United Airlines
Thu 4/237:00 am
SGN
- STL
3 stops37h 35m
United Airlines
Deal found 2/9![United Airlines logo]()
$842
This Mytrip deal was found by Cheapflights users on 2/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/196:15 am
STL
- SGN
2 stops27h 40m
ANA
Mon 10/2611:05 pm
SGN
- STL
2 stops49h 15m
ANA
Deal found 2/10![ANA logo]()
$855
This FlightHub deal was found by Cheapflights users on 2/11. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/58:21 am
STL
- SGN
2 stops27h 54m
ANA
Wed 5/611:15 pm
SGN
- STL
2 stops33h 53m
ANA
Deal found 2/11![ANA logo]()
$858
This United Airlines deal was found by Cheapflights users on 2/12. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/278:15 pm
STL
- SGN
2 stops37h 40m
United Airlines
Sat 10/317:30 am
SGN
- STL
2 stops22h 23m
United Airlines
Deal found 2/12![United Airlines logo]()
$866
This oojo deal was found by Cheapflights users on 2/11. 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.
Wed 9/94:14 pm
STL
- HAN
2 stops29h 41m
Cathay Pacific
Wed 9/237:10 pm
HAN
- STL
2 stops36h 53m
Cathay Pacific
Deal found 2/11![Cathay Pacific logo]()
$901
This KAYAK deal was found by Cheapflights users on 2/10. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/237:00 am
STL
- HAN
2 stops46h 30m
Cathay Pacific
Fri 12/411:05 am
HAN
- STL
2 stops25h 52m
Cathay Pacific
Deal found 2/10![Cathay Pacific logo]()
$1,019
This United Airlines deal was found by Cheapflights users on 2/8. 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 9/278:50 am
STL
- HAN
2 stops49h 25m
United Airlines
Thu 10/111:35 pm
HAN
- STL
2 stops31h 03m
United Airlines
Deal found 2/8![United Airlines logo]()
$1,045
Best flights from St. Louis to VietnamDiscover carefully curated flight deals from St. Louis to Vietnam that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 12, 2026.
Discover carefully curated flight deals from St. Louis to Vietnam that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 12, 2026.
This United Airlines deal was found by Cheapflights users on 2/11. 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.
Mon 8/38:15 pm
STL
- SGN
3 stops37h 50m
United Airlines
Mon 9/1411:15 pm
SGN
- STL
2 stops30h 38m
United Airlines
Deal found 2/11![United Airlines logo]()
$821
This oojo deal was found by Cheapflights users on 2/11. 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.
Sat 5/96:11 pm
STL
- SGN
2 stops27h 54m
Cathay Pacific
Fri 5/226:20 pm
SGN
- STL
2 stops41h 36m
Cathay Pacific
Deal found 2/11![Cathay Pacific logo]()
$996
This Orbitz deal was found by Cheapflights users on 2/9. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/107:00 am
STL
- HAN
2 stops46h 15m
Multiple Airlines
Tue 3/1712:35 pm
HAN
- STL
2 stops38h 16m
Multiple Airlines
Deal found 2/9![Multiple Airlines logo]()
$1,115
This Delta deal was found by Cheapflights users on 2/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/276:00 am
STL
- DAD
2 stops43h 40m
Delta
Fri 4/33:40 pm
DAD
- STL
2 stops36h 27m
Delta
Deal found 2/9![Delta logo]()
$1,342
This United Airlines deal was found by Cheapflights users on 2/9. 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.
Sun 4/196:35 pm
STL
- SGN
3 stops39h 30m
United Airlines
Thu 4/237:00 am
SGN
- STL
3 stops37h 35m
United Airlines
Deal found 2/9![United Airlines logo]()
$832
This United Airlines deal was found by Cheapflights users on 2/11. 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.
Sun 4/58:30 am
STL
- SGN
2 stops25h 35m
United Airlines
Wed 5/67:00 am
SGN
- STL
3 stops26h 08m
United Airlines
Deal found 2/11![United Airlines logo]()
$881
This Qatar Airways deal was found by Cheapflights users on 2/9. 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.
Mon 7/61:11 pm
STL
- DAD
3 stops57h 14m
Qatar Airways
Mon 8/242:40 pm
DAD
- STL
3 stops39h 49m
Qatar Airways
Deal found 2/9![Qatar Airways logo]()
$2,134
This United Airlines deal was found by Cheapflights users on 2/11. 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 5/62:35 pm
STL
- SGN
3 stops43h 30m
United Airlines
Wed 7/111:15 pm
SGN
- STL
2 stops36h 12m
United Airlines
Deal found 2/11![United Airlines logo]()
$884
This oojo deal was found by Cheapflights users on 2/11. 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.
Wed 6/175:18 pm
STL
- HAN
2 stops28h 37m
Cathay Pacific
Sun 6/217:10 pm
HAN
- STL
2 stops40h 49m
Cathay Pacific
Deal found 2/11![Cathay Pacific logo]()
$1,142
This United Airlines deal was found by Cheapflights users on 2/10. 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.
Sat 5/94:44 pm
STL
- SGN
3 stops41h 21m
United Airlines
Fri 5/2211:15 pm
SGN
- STL
2 stops33h 23m
United Airlines
Deal found 2/10![United Airlines logo]()
$901
This BusinessClass deal was found by Cheapflights users on 2/12. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/62:58 pm
STL
- DAD
2 stops30h 02m
Multiple Airlines
Mon 8/245:30 pm
DAD
- STL
2 stops32h 56m
Multiple Airlines
Deal found 2/12![Multiple Airlines logo]()
$1,268
This United Airlines deal was found by Cheapflights users on 2/11. 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 5/126:49 pm
STL
- SGN
3 stops39h 16m
United Airlines
Tue 6/27:00 am
SGN
- STL
3 stops25h 42m
United Airlines
Deal found 2/11![United Airlines logo]()
$962
This China Airlines deal was found by Cheapflights users on 2/10. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/57:30 pm
STL
- DAD
2 stops33h 00m
Multiple Airlines
Sun 8/235:30 pm
DAD
- STL
2 stops32h 05m
Multiple Airlines
Deal found 2/10![Multiple Airlines logo]()
$1,429
This United Airlines deal was found by Cheapflights users on 2/10. 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.
Fri 5/155:59 pm
STL
- SGN
3 stops40h 06m
United Airlines
Thu 5/217:00 am
SGN
- STL
2 stops22h 53m
United Airlines
Deal found 2/10![United Airlines logo]()
$994
This KAYAK deal was found by Cheapflights users on 2/9. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/116:38 am
STL
- HAN
2 stops39h 27m
Cathay Pacific
Sat 3/2111:05 am
HAN
- STL
2 stops23h 53m
Cathay Pacific
Deal found 2/9![Cathay Pacific logo]()
$1,478
This EVA Air deal was found by Cheapflights users on 2/12. 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 EVA Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/122:47 pm
STL
- DAD
2 stops32h 53m
Multiple Airlines
Thu 3/191:00 pm
DAD
- STL
2 stops33h 55m
Multiple Airlines
Deal found 2/12![Multiple Airlines logo]()
$1,570
This Air Canada deal was found by Cheapflights users on 2/11. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/171:00 pm
STL
- HAN
2 stops45h 00m
Air Canada
Sun 6/2111:35 pm
HAN
- STL
2 stops48h 46m
Air Canada
Deal found 2/11![Air Canada logo]()
$4,790
This Orbitz deal was found by Cheapflights users on 2/10. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/97:00 am
STL
- DAD
2 stops38h 10m
Multiple Airlines
Mon 3/1611:30 pm
DAD
- STL
2 stops51h 59m
Multiple Airlines
Deal found 2/10![Multiple Airlines logo]()
$1,824
This Mytrip deal was found by Cheapflights users on 2/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/157:30 am
STL
- HAN
3 stops33h 15m
Multiple Airlines
Thu 5/218:45 pm
HAN
- STL
3 stops35h 19m
Multiple Airlines
Deal found 2/10![Multiple Airlines logo]()
$1,882
This United Airlines deal was found by Cheapflights users on 2/11. 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 6/177:06 pm
STL
- HAN
2 stops39h 09m
United Airlines
Sun 6/2111:35 pm
HAN
- STL
3 stops52h 11m
United Airlines
Deal found 2/11![United Airlines logo]()
$1,615
This United Airlines deal was found by Cheapflights users on 2/11. 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 3/116:00 am
STL
- HAN
2 stops29h 05m
United Airlines
Tue 3/1712:25 am
HAN
- STL
2 stops34h 00m
United Airlines
Deal found 2/11![United Airlines logo]()
$2,958
Last-minute flights from St. Louis to VietnamDiscover last-minute flight deals from St. Louis to Vietnam. Data last updated February 12, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Vietnam. Data last updated February 12, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 2/10. 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.
Sat 2/144:28 pm
STL
- SGN
3 stops41h 27m
United Airlines
Sun 3/156:00 am
SGN
- STL
3 stops51h 07m
United Airlines
Deal found 2/10![United Airlines logo]()
$1,053
This United Airlines deal was found by Cheapflights users on 2/11. 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.
Sun 2/156:55 pm
STL
- SGN
3 stops39h 00m
United Airlines
Mon 3/307:00 am
SGN
- STL
3 stops37h 35m
United Airlines
Deal found 2/11![United Airlines logo]()
$1,056
This Ovago deal was found by Cheapflights users on 2/11. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/156:00 pm
STL
- SGN
2 stops39h 55m
Air China
Mon 3/307:00 am
SGN
- STL
2 stops49h 54m
Air China
Deal found 2/11![Air China logo]()
$1,085
This CheapOair deal was found by Cheapflights users on 2/11. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/156:38 am
STL
- SGN
2 stops46h 57m
Multiple Airlines
Tue 2/1711:45 pm
SGN
- STL
2 stops37h 14m
Multiple Airlines
Deal found 2/11![Multiple Airlines logo]()
$1,126
This oojo deal was found by Cheapflights users on 2/10. 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.
Mon 2/162:47 pm
STL
- SGN
2 stops37h 03m
China Airlines
Mon 3/911:00 am
SGN
- STL
2 stops38h 51m
China Airlines
Deal found 2/10![China Airlines logo]()
$1,034
This United Airlines deal was found by Cheapflights users on 2/10. 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 2/167:41 am
STL
- SGN
2 stops49h 09m
United Airlines
Mon 3/96:00 am
SGN
- STL
3 stops43h 19m
United Airlines
Deal found 2/10![United Airlines logo]()
$1,057
This KAYAK deal was found by Cheapflights users on 2/9. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/1710:37 am
STL
- SGN
2 stops34h 58m
Cathay Pacific
Tue 3/101:50 pm
SGN
- STL
2 stops45h 08m
Cathay Pacific
Deal found 2/9![Cathay Pacific logo]()
$1,109
This United Airlines deal was found by Cheapflights users on 2/11. 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.
Mon 2/234:49 pm
STL
- SGN
2 stops64h 01m
United Airlines
Mon 3/307:00 am
SGN
- STL
3 stops37h 35m
United Airlines
Deal found 2/11![United Airlines logo]()
$1,112
This United Airlines deal was found by Cheapflights users on 2/11. 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.
Mon 2/234:49 pm
STL
- SGN
2 stops64h 01m
United Airlines
Tue 3/317:00 am
SGN
- STL
3 stops45h 56m
United Airlines
Deal found 2/11![United Airlines logo]()
$1,128
This Orbitz deal was found by Cheapflights users on 2/9. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/107:00 am
STL
- HAN
2 stops46h 15m
Multiple Airlines
Tue 3/1712:35 pm
HAN
- STL
2 stops38h 16m
Multiple Airlines
Deal found 2/9![Multiple Airlines logo]()
$1,115
This United Airlines deal was found by Cheapflights users on 2/10. 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.
Fri 3/275:15 am
STL
- SGN
3 stops29h 40m
United Airlines
Fri 4/37:00 am
SGN
- STL
3 stops42h 08m
United Airlines
Deal found 2/10![United Airlines logo]()
$1,136
This Delta deal was found by Cheapflights users on 2/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/276:00 am
STL
- DAD
2 stops43h 40m
Delta
Fri 4/33:40 pm
DAD
- STL
2 stops36h 27m
Delta
Deal found 2/9![Delta logo]()
$1,342
One-way flights from St. Louis to VietnamSearch for one-way flight options from St. Louis to Vietnam. Find affordable one-way fares based on user searches. Data last updated February 12, 2026.
Search for one-way flight options from St. Louis to Vietnam. Find affordable one-way fares based on user searches. Data last updated February 12, 2026.
This oojo deal was found by Cheapflights users on 2/9. 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.
Wed 2/187:00 am
STL
- SGN
2 stops42h 30m
Philippine Airlines
Deal found 2/9![Philippine Airlines logo]()
$416
This FlightHub deal was found by Cheapflights users on 2/10. 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 2/177:41 am
STL
- SGN
2 stops27h 34m
ANA
Deal found 2/10![ANA logo]()
$426
This United Airlines deal was found by Cheapflights users on 2/10. 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.
Tue 4/78:30 am
STL
- SGN
2 stops25h 35m
United Airlines
Deal found 2/10![United Airlines logo]()
$432
This Kiwi.com deal was found by Cheapflights users on 2/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/74:54 pm
STL
- SGN
3 stops54h 11m
Multiple Airlines
Deal found 2/9![Multiple Airlines logo]()
$437
This Kiwi.com deal was found by Cheapflights users on 2/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/178:06 pm
STL
- SGN
3 stops50h 54m
Multiple Airlines
Deal found 2/9![Multiple Airlines logo]()
$457
This Kiwi.com deal was found by Cheapflights users on 2/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/168:12 pm
STL
- SGN
3 stops50h 48m
Multiple Airlines
Deal found 2/9![Multiple Airlines logo]()
$473
This oojo deal was found by Cheapflights users on 2/12. 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.
Tue 3/37:00 am
STL
- HAN
2 stops26h 30m
Japan Airlines
Deal found 2/12![Japan Airlines logo]()
$485
This FlightHub deal was found by Cheapflights users on 2/9. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/36:38 am
STL
- HAN
2 stops38h 27m
Cathay Pacific
Deal found 2/9![Cathay Pacific logo]()
$486
This FlightHub deal was found by Cheapflights users on 2/9. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/1710:37 am
STL
- SGN
2 stops42h 58m
Cathay Pacific
Deal found 2/9![Cathay Pacific logo]()
$486
This Cathay Pacific deal was found by Cheapflights users on 2/12. 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/189:37 am
STL
- SGN
2 stops43h 58m
Multiple Airlines
Deal found 2/12![Multiple Airlines logo]()
$491
This United Airlines deal was found by Cheapflights users on 2/10. 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.
Tue 2/174:30 pm
STL
- SGN
3 stops41h 25m
United Airlines
Deal found 2/10![United Airlines logo]()
$493
This Delta deal was found by Cheapflights users on 2/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/83:42 pm
STL
- SGN
2 stops32h 53m
Delta
Deal found 2/9![Delta logo]()
$544
Find 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 February 12, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $818 (FlightHub) |
One-way from | $416 (oojo) |
Popular in | December |
Cheapest in | November |
Average price | $1,150 |
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 February 12, 2026.
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
Mon 8/3
8:15 pm-10:05 pm
3 stops37h 50m
Ho Chi Minh City
Mon 9/14
11:15 pm-5:53 pm
2 stops30h 38m
$821
St. LouisHo Chi Minh City
STL - SGN
STLSGN
Lambert-St Louis
Sun 4/19
6:35 pm-10:05 pm
3 stops39h 30m
Ho Chi Minh City
Thu 4/23
7:00 am-8:35 am
3 stops37h 35m
$832
St. LouisHo Chi Minh City
STL - SGN
STLSGN
Lambert-St Louis
Sun 4/5
8:30 am-10:05 pm
2 stops25h 35m
Ho Chi Minh City
Wed 5/6
7:00 am-9:08 pm
3 stops26h 08m
$881
St. LouisHo Chi Minh City
STL - SGN
STLSGN
Lambert-St Louis
Wed 5/6
2:35 pm-10:05 pm
3 stops43h 30m
Ho Chi Minh City
Wed 7/1
11:15 pm-11:27 pm
2 stops36h 12m
$884
St. LouisHo Chi Minh City
STL - SGN
STLSGN
Lambert-St Louis
Sat 5/9
4:44 pm-10:05 pm
3 stops41h 21m
Ho Chi Minh City
Fri 5/22
11:15 pm-8:38 pm
2 stops33h 23m
$901
St. LouisHo Chi Minh City
STL - SGN
STLSGN
Lambert-St Louis
Tue 5/12
6:49 pm-10:05 pm
3 stops39h 16m
Ho Chi Minh City
Tue 6/2
7:00 am-8:42 pm
3 stops25h 42m
$962
St. LouisHo Chi Minh City
STL - SGN
STLSGN
Lambert-St Louis
Fri 5/15
5:59 pm-10:05 pm
3 stops40h 06m
Ho Chi Minh City
Thu 5/21
7:00 am-5:53 pm
2 stops22h 53m
$994
St. LouisHo Chi Minh City
STL - SGN
STLSGN
Lambert-St Louis
Sat 5/9
6:11 pm-10:05 am
2 stops27h 54m
Ho Chi Minh City
Fri 5/22
6:20 pm-11:56 pm
2 stops41h 36m
$996
St. LouisHanoi
STL - HAN
STLHAN
Lambert-St Louis
Tue 3/10
7:00 am-5:15 pm
2 stops46h 15m
Hanoi Noibai
Tue 3/17
12:35 pm-2:51 pm
2 stops38h 16m
$1,115
St. LouisHanoi
STL - HAN
STLHAN
Lambert-St Louis
Wed 6/17
5:18 pm-9:55 am
2 stops28h 37m
Hanoi Noibai
Sun 6/21
7:10 pm-11:59 pm
2 stops40h 49m
$1,142
Showing 1-10 of 32 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.
STL-SGN
STL-HAN
STL-DAD
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
STL-VN0
STL-SGN
STL-HAN
STL-DAD
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 $625). Flying from St. Louis to Vietnam in June is currently the most expensive (average of $1,282). 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.
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 February 12, 2026.
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.
Overall
8.4
Food
7.8
Boarding
8.6
Entertainment
7.9
Comfort
8.2
Crew
8.7
Reviews
1 / 20
10.0
ExcellentAnonymous,Jan 2026
OKA - HND
Overall
8.4
Food
7.8
Boarding
8.6
Entertainment
7.9
Comfort
8.2
Crew
8.7
Reviews
1 / 20
10.0
ExcellentAnonymous,Jan 2026
OKA - HND
Overall
8.4
Food
7.8
Boarding
8.6
Entertainment
7.9
Comfort
8.2
Crew
8.7
Reviews
1 / 20
10.0
ExcellentAnonymous,Jan 2026
OKA - HND
Overall
8.4
Food
7.8
Boarding
8.6
Entertainment
7.9
Comfort
8.2
Crew
8.7
Reviews
1 / 20
10.0
ExcellentAnonymous,Jan 2026
OKA - HND
Overall
8.4
Food
7.8
Boarding
8.6
Entertainment
7.9
Comfort
8.2
Crew
8.7
Reviews
1 / 20
10.0
ExcellentAnonymous,Jan 2026
OKA - HND
Overall
8.4
Food
7.8
Boarding
8.6
Entertainment
7.9
Comfort
8.2
Crew
8.7
Reviews
1 / 20
10.0
ExcellentAnonymous,Jan 2026
OKA - 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.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Popular flights
Top destinations
Top regions
Alternative routes for St. Louis to Vietnam
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Vietnam by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from St. Louis to Vietnam by cabin class
Find flights from St. Louis to Vietnam, based on your preferred cabin class, be it economy, premium economy, business, or first class.
St. Louis and Vietnam flights
Browse other St. Louis and Vietnam flight options. Last updated on February 12, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
St. Louis to Vietnam flights
Consider these flights traveling from St. Louis to Vietnam.
Fly to Vietnam regions
Consider these flights traveling to Vietnam regions.
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 February 12, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$903 | Average$994 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$915 | Average$1,288 | FlexibilityNo cancel fee | On-time72% | |
| Cheapest$923 | Average$1,109 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$946 | Average$1,116 | FlexibilityNo cancel fee | On-time79% | |
| Cheapest$960 | Average$1,461 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$966 | Average$1,087 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$985 | Average$1,020 | FlexibilityNo cancel fee | On-time80% | |
| Cheapest$1,008 | Average$1,362 | FlexibilityNo cancel fee | On-time74% |