What airlines fly to Vietnam?

United Airlines, Japan Airlines and Cathay Pacific are the top three most popular airlines that fly to Vietnam from St. Louis according to our data. United Airlines is the first choice among our users, with 55% of people opting to fly with this airline when traveling to Vietnam. Keep in mind that there are 6 different airlines that fly to Vietnam on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Lambert-St Louis to Vietnam?

Philippine Airlines, Qatar Airways, and United Airlines are the most popular carriers operating from Lambert-St Louis to Vietnam

When did momondo last update prices for flights from Lambert-St Louis Airport to Vietnam?

Prices for flights from Lambert-St Louis Airport to Vietnam are updated daily.

How many operators does momondo search for flights from Lambert-St Louis Airport to Vietnam?

As of July 2026, there are 6 operators available to choose from for flights from Lambert-St Louis Airport to Vietnam.

How old do you have to be to fly from Lambert-St Louis Airport to Vietnam?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Lambert-St Louis Airport to Vietnam.

What documentation or ID do you need to fly to Vietnam?

The required travel and health documents for your Vietnam trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Vietnam. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$499 Cheap Flights from St. Louis to Vietnam in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from St. Louis to Vietnam

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:29 am - 1:50 pm

STL

SGN

43h 21m

2 stops

8:00 pm - 11:59 pm

SGN

STL

39h 59m

2 stops

$1,086Multiple Airlines

Wed, Sep 16 - Wed, Oct 7

7:00 am - 10:30 am

STL

SGN

38h 30m

2 stops

5:50 pm - 11:56 pm

SGN

STL

43h 06m

2 stops

$1,092STARLUX Airlines

Sun, Nov 1 - Sun, Nov 15

6:29 am - 1:50 pm

STL

SGN

43h 21m

2 stops

8:00 pm - 6:38 pm

SGN

STL

58h 38m

2 stops

$1,093Multiple Airlines

Tue, Sep 8 - Tue, Sep 15

3:24 pm - 7:15 am

STL

SGN

50h 51m

2 stops

8:55 am - 11:44 pm

SGN

STL

50h 49m

2 stops

$1,096Multiple Airlines

Tue, Jan 19 - Mon, Mar 15

11:31 am - 10:00 pm

STL

SGN

46h 29m

2 stops

7:50 am - 4:43 pm

SGN

STL

21h 53m

2 stops

$1,113Japan Airlines

Sat, Oct 10 - Wed, Nov 18

12:52 pm - 12:35 pm

STL

SGN

35h 43m

2 stops

1:55 pm - 9:31 pm

SGN

STL

43h 36m

2 stops

$1,141Delta

Wed, Sep 2 - Wed, Sep 9

7:29 am - 10:30 pm

STL

HAN

26h 01m

2 stops

11:55 pm - 4:43 pm

HAN

STL

29h 48m

2 stops

$1,144Japan Airlines

Mon, Nov 9 - Mon, Nov 16

9:32 am - 5:25 am

STL

SGN

31h 53m

2 stops

11:15 pm - 4:48 pm

SGN

STL

29h 33m

2 stops

$1,145American Airlines

Fri, Sep 4 - Fri, Sep 11

6:30 am - 9:35 pm

STL

HAN

27h 05m

2 stops

11:10 pm - 12:41 am

HAN

STL

37h 31m

2 stops

$1,179Delta

Tue, Aug 18 - Mon, Aug 24

8:00 am - 10:15 pm

STL

HAN

26h 15m

2 stops

11:35 pm - 12:40 pm

HAN

STL

49h 05m

3 stops

$1,381United Airlines

Sun, Oct 11 - Thu, Oct 15

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United Airlines flights from St. Louis to Vietnam

Our best United Airlines deals on St. Louis to Vietnam flight tickets

United Airlines

Sep 8

STL6:15 amLambert-St Louis

27h 50m

3 stops

SGN10:05 pmHo Chi Minh City

Sep 15

SGN7:00 amHo Chi Minh City

23h 31m

2 stops

STL6:31 pmLambert-St Louis

$1,148

United Airlines

Sep 8

STL6:15 amLambert-St Louis

27h 50m

3 stops

SGN10:05 pmHo Chi Minh City

Oct 12

SGN11:15 pmHo Chi Minh City

24h 58m

2 stops

STL12:13 pmLambert-St Louis

$1,151

United Airlines

Sep 30

STL6:15 amLambert-St Louis

27h 50m

3 stops

SGN10:05 pmHo Chi Minh City

Nov 19

SGN7:30 amHo Chi Minh City

22h 13m

2 stops

STL4:43 pmLambert-St Louis

$1,153

STARLUX Airlines flights from St. Louis to Vietnam

Our best STARLUX Airlines deals on St. Louis to Vietnam flight tickets

STARLUX Airlines

Nov 1

STL7:00 amLambert-St Louis

38h 30m

2 stops

SGN10:30 amHo Chi Minh City

Nov 15

SGN5:50 pmHo Chi Minh City

43h 06m

2 stops

STL11:56 pmLambert-St Louis

$1,092

STARLUX Airlines

Nov 21

STL2:23 pmLambert-St Louis

31h 07m

2 stops

SGN10:30 amHo Chi Minh City

Nov 28

SGN11:40 amHo Chi Minh City

25h 09m

2 stops

STL11:49 pmLambert-St Louis

$1,239

STARLUX Airlines

Nov 22

STL2:23 pmLambert-St Louis

31h 07m

2 stops

SGN10:30 amHo Chi Minh City

Nov 29

SGN11:40 amHo Chi Minh City

25h 09m

2 stops

STL11:49 pmLambert-St Louis

$1,296

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisHo Chi Minh City

STL - SGN

STLSGN

Lambert-St Louis

Wed 9/16

6:29 am-1:50 pm

2 stops43h 21m

Ho Chi Minh City

Wed 10/7

8:00 pm-11:59 pm

2 stops39h 59m

$1,086

St. LouisHo Chi Minh City

STL - SGN

STLSGN

Lambert-St Louis

Sun 11/1

7:00 am-10:30 am

2 stops38h 30m

Ho Chi Minh City

Sun 11/15

5:50 pm-11:56 pm

2 stops43h 06m

$1,092

St. LouisHo Chi Minh City

STL - SGN

STLSGN

Lambert-St Louis

Tue 9/8

6:29 am-1:50 pm

2 stops43h 21m

Ho Chi Minh City

Tue 9/15

8:00 pm-6:38 pm

2 stops58h 38m

$1,093

St. LouisHo Chi Minh City

STL - SGN

STLSGN

Lambert-St Louis

Tue 1/19

3:24 pm-7:15 am

2 stops50h 51m

Ho Chi Minh City

Mon 3/15

8:55 am-11:44 pm

2 stops50h 49m

$1,096

St. LouisHo Chi Minh City

STL - SGN

STLSGN

Lambert-St Louis

Sat 10/10

11:31 am-10:00 pm

2 stops46h 29m

Ho Chi Minh City

Wed 11/18

7:50 am-4:43 pm

2 stops21h 53m

$1,113

St. LouisHo Chi Minh City

STL - SGN

STLSGN

Lambert-St Louis

Wed 9/2

12:52 pm-12:35 pm

2 stops35h 43m

Ho Chi Minh City

Wed 9/9

1:55 pm-9:31 pm

2 stops43h 36m

$1,141

Quickest round-trip

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Mon 11/9

7:29 am-10:30 pm

2 stops26h 01m

Hanoi Noibai

Mon 11/16

11:55 pm-4:43 pm

2 stops29h 48m

$1,144

St. LouisHo Chi Minh City

STL - SGN

STLSGN

Lambert-St Louis

Fri 9/4

9:32 am-5:25 am

2 stops31h 53m

Ho Chi Minh City

Fri 9/11

11:15 pm-4:48 pm

2 stops29h 33m

$1,145

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Tue 8/18

6:30 am-9:35 pm

2 stops27h 05m

Hanoi Noibai

Mon 8/24

11:10 pm-12:41 am

2 stops37h 31m

$1,179

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Sun 10/11

8:00 am-10:15 pm

2 stops26h 15m

Hanoi Noibai

Thu 10/15

11:35 pm-12:40 pm

3 stops49h 05m

$1,381

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from St. Louis to Vietnam

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the cheapest month to fly to Vietnam?

The month of April is, on average, the cheapest month to fly to Vietnam from St. Louis, with most prices found around $989. If you don’t want to visit Vietnam in April, then you should wait until November to fly from St. Louis, when ticket prices are also cheap, with an average price of $1,021.

How far in advance should I book a flight from St. Louis to Vietnam?

You are more likely to see cheaper flights to Vietnam from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to Vietnam for around $1,197 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Vietnam from St. Louis for as low as $1,019 on momondo.

Cheap St. Louis to Vietnam flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Vietnam

Fastest flight time	22h 57m
Direct flights	None

The fastest flight from St. Louis to Vietnam takes 22h 57m

There are no direct flights from St. Louis to Vietnam. There are no popular flight routes from St. Louis to Vietnam.

Search flight deals

Frequently asked questions about flying from St. Louis to Vietnam

When did momondo last update prices for flights from Lambert-St Louis Airport to Vietnam?
Prices for flights from Lambert-St Louis Airport to Vietnam are updated daily.
How many operators does momondo search for flights from Lambert-St Louis Airport to Vietnam?
As of July 2026, there are 6 operators available to choose from for flights from Lambert-St Louis Airport to Vietnam.
How old do you have to be to fly from Lambert-St Louis Airport to Vietnam?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Lambert-St Louis Airport to Vietnam.
What documentation or ID do you need to fly to Vietnam?
The required travel and health documents for your Vietnam trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Vietnam. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from St. Louis to Vietnam

Compare and see reviews for airlines that fly from St. Louis to Vietnam with momondo

Airline	Rating	Free Cancellation	Price
Cathay Pacific	PriceFrom $878	Free Cancellation	Rating 7.6 1,425 reviews	Search Cathay Pacific flights
American Airlines	PriceFrom $903	Free Cancellation	Rating 7.1 11,840 reviews	Search American Airlines flights
Japan Airlines	PriceFrom $942	Free Cancellation	Rating 8.3 1,881 reviews	Search Japan Airlines flights
United Airlines	PriceFrom $943	Free Cancellation	Rating 7.4 10,028 reviews	Search United Airlines flights
ANA	PriceFrom $986	Free Cancellation	Rating 8.3 1,276 reviews	Search ANA flights
Delta	PriceFrom $1,110	Free Cancellation	Rating 7.8 8,486 reviews	Search Delta flights

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Vietnam?

It is quick and easy to find St. Louis to Vietnam flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Vietnam that suits you.

Can I find flights from St. Louis to Vietnam with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Vietnam from St. Louis with this policy.

How can momondo help me find flights from St. Louis to Vietnam?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from St. Louis to Vietnam.

I’m not ready to book a flight from St. Louis to Vietnam right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of St. Louis to Vietnam flights. All you need is a valid email address and we will do the rest; it is that quick and easy.