$540+ Cheap flights from St. Louis (STL) to Vietnam
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/9. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SGN
Nov 11 — Nov 181
Round-trip
1 adult, Economy
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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
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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 October 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 October 12, 2026.
This Cathay Pacific deal was found by Cheapflights users on 10/9. 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 11/48:10 am -
2 stops45h 25m
Wed 11/187:15 am -
2 stops24h 02m
Deal found 10/9![Multiple Airlines logo]()
$1,077
This Cathay Pacific deal was found by Cheapflights users on 10/7. 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.
Mon 11/95:05 am -
2 stops40h 00m
Mon 11/1611:15 am -
2 stops42h 28m
Deal found 10/7![Multiple Airlines logo]()
$1,085
This lastminute.com deal was found by Cheapflights users on 10/8. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/2511:32 am -
2 stops30h 23m
Sat 11/77:50 am -
2 stops25h 52m
Deal found 10/8![Japan Airlines logo]()
$1,089
This KAYAK deal was found by Cheapflights users on 10/8. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/97:26 am -
2 stops45h 49m
Mon 11/167:25 pm -
2 stops36h 57m
Deal found 10/8![Cathay Pacific logo]()
$1,099
This KAYAK deal was found by Cheapflights users on 10/9. 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 11/46:00 am -
2 stops29h 30m
Wed 11/187:15 am -
2 stops22h 28m
Deal found 10/9![Cathay Pacific logo]()
$1,119
This Cathay Pacific deal was found by Cheapflights users on 10/9. 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.
Mon 11/26:00 am -
2 stops29h 30m
Thu 12/37:15 am -
2 stops26h 25m
Deal found 10/9![Multiple Airlines logo]()
$1,125
This United Airlines deal was found by Cheapflights users on 10/8. 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 10/255:00 am -
3 stops30h 10m
Sat 11/77:30 am -
2 stops24h 53m
Deal found 10/8![United Airlines logo]()
$1,168
This Korean Air deal was found by Cheapflights users on 10/7. 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.
Thu 11/127:13 am -
2 stops38h 57m
Mon 11/1612:20 pm -
2 stops38h 03m
Deal found 10/7![Korean Air logo]()
$1,173
This Cathay Pacific deal was found by Cheapflights users on 10/10. 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/78:10 am -
2 stops37h 25m
Sat 11/147:15 am -
2 stops26h 27m
Deal found 10/10![Multiple Airlines logo]()
$1,177
This Korean Air deal was found by Cheapflights users on 10/7. 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.
Thu 11/56:00 am -
2 stops43h 15m
Mon 11/911:00 pm -
2 stops27h 23m
Deal found 10/7![Korean Air logo]()
$1,180
This United Airlines deal was found by Cheapflights users on 10/11. 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 10/199:04 am -
2 stops24h 51m
Thu 10/227:00 am -
2 stops23h 43m
Deal found 10/11![United Airlines logo]()
$1,181
This United Airlines deal was found by Cheapflights users on 10/9. 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 12/19:40 am -
2 stops47h 15m
Tue 12/1511:30 pm -
2 stops24h 00m
Deal found 10/9![United Airlines logo]()
$1,182
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 October 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 October 12, 2026.
This Cathay Pacific deal was found by Cheapflights users on 10/9. 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 11/48:10 am -
2 stops45h 25m
Wed 11/187:15 am -
2 stops24h 02m
Deal found 10/9![Multiple Airlines logo]()
$1,077
This KAYAK deal was found by Cheapflights users on 10/8. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/97:26 am -
2 stops45h 49m
Mon 11/167:25 pm -
2 stops36h 57m
Deal found 10/8![Cathay Pacific logo]()
$1,099
This Korean Air deal was found by Cheapflights users on 10/7. 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.
Thu 11/127:13 am -
2 stops38h 57m
Mon 11/1612:20 pm -
2 stops38h 03m
Deal found 10/7![Korean Air logo]()
$1,173
This United Airlines deal was found by Cheapflights users on 10/10. 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.
Wed 1/66:45 pm -
3 stops39h 25m
Tue 3/97:30 am -
2 stops23h 23m
Deal found 10/10![United Airlines logo]()
$1,185
This Delta deal was found by Cheapflights users on 10/10. 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 11/257:18 pm -
2 stops37h 22m
Wed 12/211:00 pm -
2 stops37h 26m
Deal found 10/10![Delta logo]()
$1,190
This Cathay Pacific deal was found by Cheapflights users on 10/7. 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.
Mon 11/95:05 am -
2 stops40h 00m
Mon 11/1611:15 am -
2 stops42h 28m
Deal found 10/7![Multiple Airlines logo]()
$1,085
This Korean Air deal was found by Cheapflights users on 10/9. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/56:00 am -
2 stops43h 15m
Mon 11/911:00 pm -
2 stops27h 23m
Deal found 10/9![Korean Air logo]()
$1,180
This United Airlines deal was found by Cheapflights users on 10/11. 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 10/196:15 am -
3 stops27h 50m
Thu 10/227:00 am -
2 stops23h 43m
Deal found 10/11![United Airlines logo]()
$1,185
This Cathay Pacific deal was found by Cheapflights users on 10/9. 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.
Mon 11/26:00 am -
2 stops29h 30m
Thu 12/37:15 am -
2 stops26h 25m
Deal found 10/9![Multiple Airlines logo]()
$1,125
This Delta deal was found by Cheapflights users on 10/8. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/46:59 pm -
2 stops37h 41m
Sun 1/2411:00 pm -
2 stops37h 39m
Deal found 10/8![Delta logo]()
$1,245
This United Airlines deal was found by Cheapflights users on 10/11. 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 11/46:50 pm -
3 stops39h 20m
Wed 11/187:30 am -
2 stops23h 39m
Deal found 10/11![United Airlines logo]()
$1,185
This Delta deal was found by Cheapflights users on 10/8. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/46:59 pm -
2 stops37h 41m
Mon 1/2511:00 pm -
2 stops34h 37m
Deal found 10/8![Delta logo]()
$1,245
This Cathay Pacific deal was found by Cheapflights users on 10/10. 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/78:10 am -
2 stops37h 25m
Sat 11/147:15 am -
2 stops26h 27m
Deal found 10/10![Multiple Airlines logo]()
$1,177
This United Airlines deal was found by Cheapflights users on 10/10. 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 1/53:03 pm -
3 stops43h 07m
Tue 3/97:30 am -
2 stops23h 23m
Deal found 10/10![United Airlines logo]()
$1,185
This United Airlines deal was found by Cheapflights users on 10/8. 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.
Mon 1/46:04 am -
2 stops29h 11m
Wed 3/1011:30 pm -
2 stops28h 32m
Deal found 10/8![United Airlines logo]()
$1,186
This Gotogate deal was found by Cheapflights users on 10/11. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/86:00 am -
2 stops42h 25m
Sun 11/152:25 pm -
2 stops46h 34m
Deal found 10/11![Multiple Airlines logo]()
$1,264
This United Airlines deal was found by Cheapflights users on 10/8. 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.
Mon 1/46:04 am -
2 stops29h 11m
Mon 3/811:30 pm -
2 stops28h 32m
Deal found 10/8![United Airlines logo]()
$1,186
This Delta deal was found by Cheapflights users on 10/7. 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.
Sun 12/277:05 am -
2 stops42h 10m
Tue 1/511:00 pm -
2 stops34h 49m
Deal found 10/7![Delta logo]()
$1,582
This United Airlines deal was found by Cheapflights users on 10/8. 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 1/105:06 pm -
3 stops41h 04m
Thu 2/116:00 am -
3 stops26h 24m
Deal found 10/8![United Airlines logo]()
$1,189
This Delta deal was found by Cheapflights users on 10/8. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/57:03 am -
2 stops25h 22m
Mon 3/811:05 pm -
2 stops34h 44m
Deal found 10/8![Delta logo]()
$1,712
This United Airlines deal was found by Cheapflights users on 10/9. 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 11/231:08 pm -
2 stops44h 57m
Sun 11/2912:25 am -
2 stops48h 57m
Deal found 10/9![United Airlines logo]()
$1,569
This KAYAK deal was found by Cheapflights users on 10/8. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/58:10 am -
2 stops36h 30m
Mon 3/86:45 pm -
3 stops32h 21m
Deal found 10/8![Multiple Airlines logo]()
$3,424
Last-minute flights from St. Louis to VietnamDiscover last-minute flight deals from St. Louis to Vietnam. Data last updated October 12, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Vietnam. Data last updated October 12, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 10/11. 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 10/199:04 am -
2 stops24h 51m
Thu 10/227:00 am -
2 stops23h 43m
Deal found 10/11![United Airlines logo]()
$1,181
This lastminute.com deal was found by Cheapflights users on 10/8. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/2511:32 am -
2 stops30h 23m
Sat 11/77:50 am -
2 stops25h 52m
Deal found 10/8![Japan Airlines logo]()
$1,089
This United Airlines deal was found by Cheapflights users on 10/8. 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 10/255:00 am -
3 stops30h 10m
Sat 11/77:30 am -
2 stops24h 53m
Deal found 10/8![United Airlines logo]()
$1,168
This Cathay Pacific deal was found by Cheapflights users on 10/9. 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.
Mon 11/26:00 am -
2 stops29h 30m
Thu 12/37:15 am -
2 stops26h 25m
Deal found 10/9![Multiple Airlines logo]()
$1,125
This Cathay Pacific deal was found by Cheapflights users on 10/9. 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 11/48:10 am -
2 stops45h 25m
Wed 11/187:15 am -
2 stops24h 02m
Deal found 10/9![Multiple Airlines logo]()
$1,077
This KAYAK deal was found by Cheapflights users on 10/9. 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 11/46:00 am -
2 stops29h 30m
Wed 11/187:15 am -
2 stops22h 28m
Deal found 10/9![Cathay Pacific logo]()
$1,119
This Korean Air deal was found by Cheapflights users on 10/7. 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.
Thu 11/56:00 am -
2 stops43h 15m
Mon 11/911:00 pm -
2 stops27h 23m
Deal found 10/7![Korean Air logo]()
$1,180
This Cathay Pacific deal was found by Cheapflights users on 10/10. 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/78:10 am -
2 stops37h 25m
Sat 11/147:15 am -
2 stops26h 27m
Deal found 10/10![Multiple Airlines logo]()
$1,177
This Delta deal was found by Cheapflights users on 10/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/86:21 am -
2 stops26h 19m
Sun 11/1511:00 pm -
2 stops38h 40m
Deal found 10/11![Delta logo]()
$1,183
This Cathay Pacific deal was found by Cheapflights users on 10/7. 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.
Mon 11/95:05 am -
2 stops40h 00m
Mon 11/1611:15 am -
2 stops42h 28m
Deal found 10/7![Multiple Airlines logo]()
$1,085
This KAYAK deal was found by Cheapflights users on 10/8. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/97:26 am -
2 stops45h 49m
Mon 11/167:25 pm -
2 stops36h 57m
Deal found 10/8![Cathay Pacific logo]()
$1,099
This Korean Air deal was found by Cheapflights users on 10/7. 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.
Thu 11/127:13 am -
2 stops38h 57m
Mon 11/1612:20 pm -
2 stops38h 03m
Deal found 10/7![Korean Air logo]()
$1,173
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 October 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 October 12, 2026.
This FlightHub deal was found by Cheapflights users on 10/11. 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.
Tue 2/97:21 am -
2 stops45h 54m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/11![Cathay Pacific logo]()
$540
This oojo deal was found by Cheapflights users on 10/7. 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 2/2311:56 am -
2 stops29h 59m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/7![Qatar Airways logo]()
$542
This Philippine Airlines deal was found by Cheapflights users on 10/8. 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 Philippine Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/226:00 am -
2 stops42h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/8![Multiple Airlines logo]()
$547
This Cathay Pacific deal was found by Cheapflights users on 10/7. 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.
Mon 1/46:01 am -
2 stops39h 34m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/7![Multiple Airlines logo]()
$564
This Cathay Pacific deal was found by Cheapflights users on 10/8. 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/27:23 am -
2 stops38h 32m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/8![Multiple Airlines logo]()
$609
This Expedia deal was found by Cheapflights users on 10/8. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/28:05 am -
2 stops48h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/8![ANA logo]()
$630
This United Airlines deal was found by Cheapflights users on 10/7. 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 1/25:59 pm -
3 stops40h 11m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/7![United Airlines logo]()
$633
This United Airlines deal was found by Cheapflights users on 10/7. 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 2/231:08 pm -
3 stops44h 57m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/7![United Airlines logo]()
$668
This Kiwi.com deal was found by Cheapflights users on 10/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/93:54 pm -
3 stops34h 56m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/11![Multiple Airlines logo]()
$681
This Kiwi.com deal was found by Cheapflights users on 10/9. 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.
Wed 12/96:04 am -
3 stops52h 26m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/9![Multiple Airlines logo]()
$713
This KAYAK deal was found by Cheapflights users on 10/8. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/25:07 pm -
2 stops41h 03m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/8![Air India logo]()
$726
This Delta deal was found by Cheapflights users on 10/8. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/266:00 am -
2 stops28h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/8![Delta logo]()
$734
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 October 12, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,077 (Cathay Pacific) |
One-way from | $540 (FlightHub) |
Popular in | December |
Cheapest in | April |
Average price | $1,151 |
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 7,457,451 searches. Data last updated October 12, 2026.
Use the filters below to find and compare flights from St. Louis to Vietnam that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
St. LouisDa Nang
STL Lambert-St Louis - DAD Da Nang
STLDAD
Lambert-St Louis
Sun 11/22
6:00 am-1:25 pm
2 stops42h 25m
Da Nang
Wed 12/31
12:00 am-10:00 am
Nonstop0h 00m
$547
St. LouisHo Chi Minh City
STL Lambert-St Louis - SGN Ho Chi Minh City
STLSGN
Lambert-St Louis
Mon 1/4
6:01 am-10:35 am
2 stops39h 34m
Ho Chi Minh City
Wed 12/31
12:00 am-10:00 am
Nonstop0h 00m
$564
St. LouisHanoi
STL Lambert-St Louis - HAN Hanoi Noibai
STLHAN
Lambert-St Louis
Fri 4/2
7:23 am-9:55 am
2 stops38h 32m
Hanoi Noibai
Wed 12/31
12:00 am-10:00 am
Nonstop0h 00m
$609
St. LouisHo Chi Minh City
STL Lambert-St Louis - SGN Ho Chi Minh City
STLSGN
Lambert-St Louis
Sat 1/2
5:07 pm-11:10 pm
2 stops41h 03m
Ho Chi Minh City
Wed 12/31
12:00 am-10:00 am
Nonstop0h 00m
$657
St. LouisHanoi
STL Lambert-St Louis - HAN Hanoi Noibai
STLHAN
Lambert-St Louis
Tue 2/23
1:08 pm-11:15 pm
3 stops45h 07m
Hanoi Noibai
Wed 12/31
12:00 am-10:00 am
Nonstop0h 00m
$668
St. LouisNha Trang
STL Lambert-St Louis - CXR Nha Trang Cam Ranh
STLCXR
Lambert-St Louis
Wed 12/9
6:04 am-11:30 pm
3 stops52h 26m
Nha Trang Cam Ranh
Wed 12/31
12:00 am-10:00 am
Nonstop0h 00m
$713
St. LouisHo Chi Minh City
STL Lambert-St Louis - SGN Ho Chi Minh City
STLSGN
Lambert-St Louis
Sat 12/26
6:00 am-11:50 pm
2 stops28h 50m
Ho Chi Minh City
Wed 12/31
12:00 am-10:00 am
Nonstop0h 00m
$734
Quickest round-trip
St. LouisNha Trang
STL Lambert-St Louis - CXR Nha Trang Cam Ranh
STLCXR
Lambert-St Louis
Mon 11/30
7:08 am-9:25 pm
2 stops25h 17m
Nha Trang Cam Ranh
Wed 12/31
12:00 am-10:00 am
Nonstop0h 00m
$744
St. LouisNha Trang
STL Lambert-St Louis - CXR Nha Trang Cam Ranh
STLCXR
Lambert-St Louis
Tue 12/8
7:08 am-9:25 pm
2 stops25h 17m
Nha Trang Cam Ranh
Wed 12/31
12:00 am-10:00 am
Nonstop0h 00m
$744
St. LouisNha Trang
STL Lambert-St Louis - CXR Nha Trang Cam Ranh
STLCXR
Lambert-St Louis
Tue 12/1
6:03 am-9:25 pm
2 stops26h 22m
Nha Trang Cam Ranh
Wed 12/31
12:00 am-10:00 am
Nonstop0h 00m
$744
Showing 1-10 of 41 resultsSorted by cheapest first
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
STL-CXR
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
STL-CXR
What is the cheapest month to book a flight from St. Louis to Vietnam?
Currently, April is the cheapest month in which you can book a flight from St. Louis to Vietnam (average of $1,073). Flying from St. Louis to Vietnam in December is currently the most expensive (average of $1,716). 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.
How far ahead should I book a flight from St. Louis to Vietnam?
Booking 84 days in advance of your planned departure date is, on average, the best time to get cheap flights from St. Louis to Vietnam. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
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 October 12, 2026.
Read through reviews of airlines operating flights from St. Louis to Vietnam, such as Japan Airlines,ANA, andDelta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.7
Overall
8.3
Boarding
8.4
Entertainment
7.8
Food
7.7
Comfort
8.2
Reviews
1 / 20
4.0
OkayClark,Aug 2026
BDL - ORD
Crew
8.7
Overall
8.3
Boarding
8.4
Entertainment
7.8
Food
7.7
Comfort
8.2
Reviews
1 / 20
4.0
OkayClark,Aug 2026
BDL - ORD
Crew
8.7
Overall
8.3
Boarding
8.4
Entertainment
7.8
Food
7.7
Comfort
8.2
Reviews
1 / 20
4.0
OkayClark,Aug 2026
BDL - ORD
Crew
8.7
Overall
8.3
Boarding
8.4
Entertainment
7.8
Food
7.7
Comfort
8.2
Reviews
1 / 20
4.0
OkayClark,Aug 2026
BDL - ORD
Crew
8.7
Overall
8.3
Boarding
8.4
Entertainment
7.8
Food
7.7
Comfort
8.2
Reviews
1 / 20
4.0
OkayClark,Aug 2026
BDL - ORD
Crew
8.7
Overall
8.3
Boarding
8.4
Entertainment
7.8
Food
7.7
Comfort
8.2
Reviews
1 / 20
4.0
OkayClark,Aug 2026
BDL - ORD
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
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St. Louis and Vietnam flights
Browse other St. Louis and Vietnam flight options. Last updated on October 12, 2026.
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Top 6 airlines flying from St. Louis to Vietnam
Discover the top 6 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 7,457,451 searches. Data last updated October 12, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$561 | Average$1,191 | FlexibilityNo cancel fee | On-time79% | |
| Cheapest$936 | Average$1,300 | FlexibilityNo cancel fee | On-time72% | |
| Cheapest$945 | Average$1,171 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$991 | Average$1,151 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$998 | Average$1,268 | FlexibilityNo cancel fee | On-time80% | |
| Cheapest$1,110 | Average$1,578 | FlexibilityNo cancel fee | On-timeN/A |