$517+ 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 2/1. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SGN
Sep 30 — Oct 71
Round-trip
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 August 31, 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 August 31, 2026.
This Justfly.com deal was found by Cheapflights users on 8/29. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/287:21 am -
2 stops42h 34m
Mon 10/57:30 pm -
2 stops40h 49m
Deal found 8/29![Qatar Airways logo]()
$1,040
This Booking.com deal was found by Cheapflights users on 8/27. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/76:35 am -
2 stops25h 50m
Mon 9/287:10 am -
2 stops23h 28m
Deal found 8/27![Multiple Airlines logo]()
$1,056
This Justfly.com deal was found by Cheapflights users on 8/27. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/111:01 am -
2 stops35h 04m
Thu 10/297:15 am -
2 stops25h 42m
Deal found 8/27![Cathay Pacific logo]()
$1,058
This Cathay Pacific deal was found by Cheapflights users on 8/27. 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 9/166:30 am -
2 stops29h 50m
Wed 10/77:10 am -
2 stops28h 36m
Deal found 8/27![Multiple Airlines logo]()
$1,065
This Cathay Pacific deal was found by Cheapflights users on 8/27. 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 11/910:21 am -
2 stops43h 09m
Mon 11/167:30 pm -
2 stops38h 12m
Deal found 8/27![Multiple Airlines logo]()
$1,070
This Cathay Pacific deal was found by Cheapflights users on 8/27. 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 9/286:30 am -
2 stops29h 50m
Mon 10/121:35 pm -
2 stops40h 41m
Deal found 8/27![Multiple Airlines logo]()
$1,073
This KAYAK deal was found by Cheapflights users on 8/28. 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.
Sun 9/275:18 pm -
2 stops43h 02m
Sun 10/46:20 pm -
2 stops38h 37m
Deal found 8/28![Cathay Pacific logo]()
$1,075
This Gurufare deal was found by Cheapflights users on 8/27. 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.
Sun 9/68:07 pm -
2 stops40h 13m
Mon 9/286:20 pm -
2 stops38h 24m
Deal found 8/27![Cathay Pacific logo]()
$1,077
This FlightHub deal was found by Cheapflights users on 8/26. 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.
Thu 10/151:06 pm -
2 stops43h 19m
Mon 10/197:10 am -
2 stops25h 47m
Deal found 8/26![Cathay Pacific logo]()
$1,082
This Justfly.com deal was found by Cheapflights users on 8/30. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/57:02 am -
2 stops42h 48m
Mon 10/267:40 pm -
2 stops40h 19m
Deal found 8/30![Multiple Airlines logo]()
$1,088
This Cathay Pacific deal was found by Cheapflights users on 8/28. 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.
Tue 10/136:04 am -
2 stops39h 51m
Tue 10/207:10 pm -
2 stops40h 49m
Deal found 8/28![Multiple Airlines logo]()
$1,115
This China Airlines deal was found by Cheapflights users on 8/31. 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 10/257:05 pm -
2 stops33h 25m
Thu 11/55:30 pm -
2 stops38h 30m
Deal found 8/31![Multiple Airlines logo]()
$1,132
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 August 31, 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 August 31, 2026.
This Cathay Pacific deal was found by Cheapflights users on 8/27. 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 9/166:30 am -
2 stops29h 50m
Wed 10/77:10 am -
2 stops28h 36m
Deal found 8/27![Multiple Airlines logo]()
$1,065
This United Airlines deal was found by Cheapflights users on 8/30. 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 9/226:15 am -
3 stops27h 50m
Mon 10/1211:15 pm -
2 stops26h 55m
Deal found 8/30![United Airlines logo]()
$1,151
This Cathay Pacific deal was found by Cheapflights users on 8/27. 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.
Thu 9/1711:01 am -
2 stops43h 09m
Mon 9/2111:00 am -
2 stops24h 43m
Deal found 8/27![Cathay Pacific logo]()
$1,160
This oojo deal was found by Cheapflights users on 8/28. 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 11/147:00 am -
2 stops44h 25m
Thu 1/2110:25 am -
2 stops41h 31m
Deal found 8/28![China Airlines logo]()
$1,184
This Korean Air deal was found by Cheapflights users on 8/29. 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 9/107:05 am -
2 stops26h 00m
Mon 9/1410:55 pm -
2 stops26h 28m
Deal found 8/29![Korean Air logo]()
$1,362
This Cathay Pacific deal was found by Cheapflights users on 8/27. 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 11/910:21 am -
2 stops43h 09m
Mon 11/167:30 pm -
2 stops38h 12m
Deal found 8/27![Multiple Airlines logo]()
$1,070
This United Airlines deal was found by Cheapflights users on 8/28. 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 9/75:30 pm -
3 stops40h 35m
Thu 10/1511:15 pm -
2 stops24h 58m
Deal found 8/28![United Airlines logo]()
$1,151
This Cathay Pacific deal was found by Cheapflights users on 8/28. 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.
Tue 10/136:04 am -
2 stops39h 51m
Tue 10/207:10 pm -
2 stops40h 49m
Deal found 8/28![Multiple Airlines logo]()
$1,115
This United Airlines deal was found by Cheapflights users on 8/31. 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 stops29h 55m
Thu 11/511:05 pm -
2 stops30h 41m
Deal found 8/31![United Airlines logo]()
$1,151
This Cathay Pacific deal was found by Cheapflights users on 8/26. 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 10/177:29 am -
2 stops28h 51m
Sun 10/257:35 pm -
2 stops40h 11m
Deal found 8/26![Multiple Airlines logo]()
$1,115
This United Airlines deal was found by Cheapflights users on 8/27. 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 9/166:15 am -
3 stops27h 50m
Wed 10/711:15 pm -
2 stops24h 58m
Deal found 8/27![United Airlines logo]()
$1,151
This China Airlines deal was found by Cheapflights users on 8/31. 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 10/257:05 pm -
2 stops33h 25m
Thu 11/55:30 pm -
2 stops38h 30m
Deal found 8/31![Multiple Airlines logo]()
$1,132
This United Airlines deal was found by Cheapflights users on 8/26. 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 10/176:15 am -
3 stops27h 50m
Sun 10/2511:05 pm -
2 stops32h 18m
Deal found 8/26![United Airlines logo]()
$1,151
This Cathay Pacific deal was found by Cheapflights users on 8/31. 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.
Sun 9/2711:01 am -
2 stops35h 04m
Sun 10/116:20 pm -
2 stops38h 37m
Deal found 8/31![Multiple Airlines logo]()
$1,135
This United Airlines deal was found by Cheapflights users on 8/31. 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 9/275:10 am -
3 stops28h 55m
Sun 10/1111:15 pm -
2 stops34h 06m
Deal found 8/31![United Airlines logo]()
$1,151
This Justfly.com deal was found by Cheapflights users on 8/31. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/257:02 am -
2 stops45h 23m
Thu 11/510:25 am -
2 stops41h 00m
Deal found 8/31![Multiple Airlines logo]()
$1,151
This China Airlines deal was found by Cheapflights users on 8/29. 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 11/82:55 pm -
2 stops30h 40m
Fri 11/1311:35 am -
2 stops25h 40m
Deal found 8/29![Multiple Airlines logo]()
$1,152
This China Airlines deal was found by Cheapflights users on 8/28. 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.
Wed 11/118:25 am -
3 stops43h 00m
Thu 1/2110:25 am -
2 stops41h 31m
Deal found 8/28![Multiple Airlines logo]()
$1,199
This China Airlines deal was found by Cheapflights users on 8/28. 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.
Sat 11/145:50 am -
3 stops45h 35m
Thu 1/2110:25 am -
2 stops41h 31m
Deal found 8/28![Multiple Airlines logo]()
$1,232
This EVA Air deal was found by Cheapflights users on 8/28. 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.
Tue 10/134:42 pm -
2 stops30h 53m
Tue 10/2012:55 pm -
2 stops34h 30m
Deal found 8/28![Multiple Airlines logo]()
$1,252
This KAYAK deal was found by Cheapflights users on 8/28. 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.
Thu 11/128:50 am -
2 stops39h 35m
Thu 1/216:05 pm -
3 stops37h 03m
Deal found 8/28![Multiple Airlines logo]()
$1,840
Last-minute flights from St. Louis to VietnamDiscover last-minute flight deals from St. Louis to Vietnam. Data last updated August 31, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Vietnam. Data last updated August 31, 2026 and is based on user searches.
This Gurufare deal was found by Cheapflights users on 8/27. 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.
Sun 9/68:07 pm -
2 stops40h 13m
Mon 9/286:20 pm -
2 stops38h 24m
Deal found 8/27![Cathay Pacific logo]()
$1,077
This Booking.com deal was found by Cheapflights users on 8/27. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/76:35 am -
2 stops25h 50m
Mon 9/287:10 am -
2 stops23h 28m
Deal found 8/27![Multiple Airlines logo]()
$1,056
This Korean Air deal was found by Cheapflights users on 8/26. 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 9/106:00 am -
2 stops44h 20m
Mon 9/1410:55 pm -
2 stops33h 03m
Deal found 8/26![Korean Air logo]()
$1,362
This Cathay Pacific deal was found by Cheapflights users on 8/27. 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 9/166:30 am -
2 stops29h 50m
Wed 10/77:10 am -
2 stops28h 36m
Deal found 8/27![Multiple Airlines logo]()
$1,065
This Cathay Pacific deal was found by Cheapflights users on 8/27. 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.
Thu 9/1711:01 am -
2 stops43h 09m
Mon 9/2111:00 am -
2 stops24h 43m
Deal found 8/27![Cathay Pacific logo]()
$1,160
This Justfly.com deal was found by Cheapflights users on 8/27. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2211:01 am -
2 stops25h 19m
Mon 10/127:10 am -
2 stops25h 47m
Deal found 8/27![Cathay Pacific logo]()
$1,058
This FlightHub deal was found by Cheapflights users on 8/26. 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.
Fri 9/256:29 am -
2 stops43h 21m
Fri 10/28:00 pm -
2 stops39h 59m
Deal found 8/26![Multiple Airlines logo]()
$1,128
This Cathay Pacific deal was found by Cheapflights users on 8/28. 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 9/263:34 pm -
2 stops30h 31m
Mon 10/127:10 am -
2 stops28h 36m
Deal found 8/28![Multiple Airlines logo]()
$1,115
This KAYAK deal was found by Cheapflights users on 8/28. 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.
Sun 9/275:18 pm -
2 stops43h 02m
Sun 10/46:20 pm -
2 stops38h 37m
Deal found 8/28![Cathay Pacific logo]()
$1,075
This Justfly.com deal was found by Cheapflights users on 8/29. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/287:21 am -
2 stops42h 34m
Mon 10/57:30 pm -
2 stops40h 49m
Deal found 8/29![Qatar Airways logo]()
$1,040
This Cathay Pacific deal was found by Cheapflights users on 8/27. 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 9/286:30 am -
2 stops29h 50m
Mon 10/121:35 pm -
2 stops40h 41m
Deal found 8/27![Multiple Airlines logo]()
$1,073
This Trip.com deal was found by Cheapflights users on 8/29. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2812:17 pm -
3 stops48h 28m
Sun 10/41:45 am -
3 stops45h 47m
Deal found 8/29![Multiple Airlines logo]()
$1,243
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 August 31, 2026.
Search for one-way flight options from St. Louis to Vietnam. Find affordable one-way fares based on user searches. Data last updated August 31, 2026.
This Justfly.com deal was found by Cheapflights users on 8/27. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/13:54 pm -
2 stops32h 31m
Deal found 8/27![Multiple Airlines logo]()
$517
This Kiwi.com deal was found by Cheapflights users on 8/27. 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 11/177:00 am -
3 stops38h 40m
Deal found 8/27![Multiple Airlines logo]()
$521
This oojo deal was found by Cheapflights users on 8/27. 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 9/156:29 am -
2 stops29h 51m
Deal found 8/27![Multiple Airlines logo]()
$525
This Air Canada deal was found by Cheapflights users on 8/29. 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.
Thu 9/248:55 am -
2 stops26h 50m
Deal found 8/29![Multiple Airlines logo]()
$530
This Cathay Pacific deal was found by Cheapflights users on 8/27. 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 11/98:10 am -
2 stops37h 25m
Deal found 8/27![Multiple Airlines logo]()
$543
This Cathay Pacific deal was found by Cheapflights users on 8/27. 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.
Sun 11/228:12 pm -
2 stops39h 08m
Deal found 8/27![Multiple Airlines logo]()
$554
This Kiwi.com deal was found by Cheapflights users on 8/27. 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 11/246:00 am -
3 stops39h 40m
Deal found 8/27![Multiple Airlines logo]()
$569
This Kiwi.com deal was found by Cheapflights users on 8/28. 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 9/218:10 pm -
3 stops51h 15m
Deal found 8/28![Multiple Airlines logo]()
$572
This Kiwi.com deal was found by Cheapflights users on 8/27. 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 11/184:18 pm -
3 stops43h 52m
Deal found 8/27![Multiple Airlines logo]()
$576
This United Airlines deal was found by Cheapflights users on 8/27. 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 9/156:15 am -
3 stops27h 50m
Deal found 8/27![United Airlines logo]()
$612
This KAYAK deal was found by Cheapflights users on 8/27. 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.
Fri 10/97:02 am -
2 stops36h 13m
Deal found 8/27![Qatar Airways logo]()
$622
This FlightHub deal was found by Cheapflights users on 8/27. 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 1/313:54 pm -
2 stops35h 31m
Deal found 8/27![Multiple Airlines logo]()
$630
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 August 31, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,040 (Justfly.com) |
One-way from | $517 (Justfly.com) |
Popular in | December |
Cheapest in | April |
Average price | $1,181 |
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 August 31, 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. LouisHo Chi Minh City
STL Lambert-St Louis - SGN Ho Chi Minh City
STLSGN
Lambert-St Louis
Wed 9/16
6:30 am-12:20 am
2 stops29h 50m
Ho Chi Minh City
Wed 10/7
7:10 am-11:46 pm
2 stops28h 36m
$1,065
St. LouisHanoi
STL Lambert-St Louis - HAN Hanoi Noibai
STLHAN
Lambert-St Louis
Mon 11/9
10:21 am-6:30 pm
2 stops43h 09m
Hanoi Noibai
Mon 11/16
7:30 pm-8:42 pm
2 stops38h 12m
$1,070
St. LouisHanoi
STL Lambert-St Louis - HAN Hanoi Noibai
STLHAN
Lambert-St Louis
Tue 10/13
6:04 am-9:55 am
2 stops39h 51m
Hanoi Noibai
Tue 10/20
7:10 pm-11:59 pm
2 stops40h 49m
$1,115
St. LouisHo Chi Minh City
STL Lambert-St Louis - SGN Ho Chi Minh City
STLSGN
Lambert-St Louis
Sat 10/17
7:29 am-12:20 am
2 stops28h 51m
Ho Chi Minh City
Sun 10/25
7:35 pm-11:46 pm
2 stops40h 11m
$1,115
St. LouisHanoi
STL Lambert-St Louis - HAN Hanoi Noibai
STLHAN
Lambert-St Louis
Sun 10/25
7:05 pm-4:30 pm
2 stops33h 25m
Hanoi Noibai
Thu 11/5
5:30 pm-7:00 pm
2 stops38h 30m
$1,132
St. LouisHo Chi Minh City
STL Lambert-St Louis - SGN Ho Chi Minh City
STLSGN
Lambert-St Louis
Sun 9/27
11:01 am-10:05 am
2 stops35h 04m
Ho Chi Minh City
Sun 10/11
6:20 pm-8:57 pm
2 stops38h 37m
$1,135
St. LouisHo Chi Minh City
STL Lambert-St Louis - SGN Ho Chi Minh City
STLSGN
Lambert-St Louis
Tue 9/22
6:15 am-10:05 pm
3 stops27h 50m
Ho Chi Minh City
Mon 10/12
11:15 pm-2:10 pm
2 stops26h 55m
$1,151
St. LouisHo Chi Minh City
STL Lambert-St Louis - SGN Ho Chi Minh City
STLSGN
Lambert-St Louis
Mon 9/7
5:30 pm-10:05 pm
3 stops40h 35m
Ho Chi Minh City
Thu 10/15
11:15 pm-12:13 pm
2 stops24h 58m
$1,151
St. LouisHo Chi Minh City
STL Lambert-St Louis - SGN Ho Chi Minh City
STLSGN
Lambert-St Louis
Sun 10/25
5:00 am-10:55 pm
3 stops29h 55m
Ho Chi Minh City
Thu 11/5
11:05 pm-4:46 pm
2 stops30h 41m
$1,151
St. LouisHo Chi Minh City
STL Lambert-St Louis - SGN Ho Chi Minh City
STLSGN
Lambert-St Louis
Wed 9/16
6:15 am-10:05 pm
3 stops27h 50m
Ho Chi Minh City
Wed 10/7
11:15 pm-12:13 pm
2 stops24h 58m
$1,151
Showing 1-10 of 35 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-DAD
STL-SGN
STL-HAN
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-DAD
STL-SGN
STL-HAN
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 $1,605). 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 August 31, 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.
Boarding
8.4
Crew
8.7
Overall
8.3
Comfort
8.2
Entertainment
7.8
Food
7.7
Reviews
1 / 20
4.0
OkayClark,Aug 2026
BDL - ORD
Boarding
8.4
Crew
8.7
Overall
8.3
Comfort
8.2
Entertainment
7.8
Food
7.7
Reviews
1 / 20
4.0
OkayClark,Aug 2026
BDL - ORD
Boarding
8.4
Crew
8.7
Overall
8.3
Comfort
8.2
Entertainment
7.8
Food
7.7
Reviews
1 / 20
4.0
OkayClark,Aug 2026
BDL - ORD
Boarding
8.4
Crew
8.7
Overall
8.3
Comfort
8.2
Entertainment
7.8
Food
7.7
Reviews
1 / 20
4.0
OkayClark,Aug 2026
BDL - ORD
Boarding
8.4
Crew
8.7
Overall
8.3
Comfort
8.2
Entertainment
7.8
Food
7.7
Reviews
1 / 20
4.0
OkayClark,Aug 2026
BDL - ORD
Boarding
8.4
Crew
8.7
Overall
8.3
Comfort
8.2
Entertainment
7.8
Food
7.7
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.
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 August 31, 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 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 August 31, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$903 | Average$1,151 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$921 | Average$1,116 | FlexibilityNo cancel fee | On-time79% | |
| Cheapest$936 | Average$1,306 | FlexibilityNo cancel fee | On-time72% | |
| Cheapest$943 | Average$1,160 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$998 | Average$1,189 | FlexibilityNo cancel fee | On-time80% | |
| Cheapest$1,110 | Average$1,580 | FlexibilityNo cancel fee | On-timeN/A |