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

China Airlines, Japan Airlines, and American Airlines are the most popular carriers operating from Lambert-St Louis to Vietnam

What airlines fly to Vietnam?

ANA, United Airlines and Japan Airlines are the top three most popular airlines that fly to Vietnam from St. Louis according to our data. ANA is the first choice among our users, with 36% of people opting to fly with this airline when traveling to Vietnam. Keep in mind that there are 10 different airlines that fly to Vietnam on a routine basis, so you have a few additional options to choose from.

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 2025, there are 10 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.

$507 Cheap Flights from St. Louis to Vietnam in 2025

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Find the cheapest flights from St. Louis to Vietnam

Round-trip

One-way

Last minute

Cheap round-trip flights

3:35 pm - 9:40 amSTL-SGN

30h 05m2 stops

5:30 pm - 12:03 amSGN-STL

42h 33m2 stops

$947China Airlines

Find Deal

Mon, Sep 8 - Sun, Oct 12

4:10 pm - 10:00 amSTL-SGN

28h 50m2 stops

11:00 am - 11:55 pmSGN-STL

48h 55m2 stops

$948China Airlines

Find Deal

Tue, Jan 6 - Tue, Mar 24

11:45 am - 9:50 pmSTL-SGN

45h 05m2 stops

11:05 pm - 12:20 pmSGN-STL

25h 15m2 stops

$966ANA

Find Deal

Wed, Jan 7 - Tue, Mar 17

8:00 am - 9:50 pmSTL-SGN

48h 50m2 stops

7:00 am - 12:20 pmSGN-STL

41h 20m2 stops

$970ANA

Find Deal

Wed, Jan 7 - Mon, Apr 6

6:01 am - 5:50 amSTL-SGN

34h 49m2 stops

11:45 pm - 12:12 amSGN-STL

37h 27m2 stops

$976Japan Airlines

Find Deal

Thu, Nov 27 - Wed, Dec 10

2:17 pm - 5:50 amSTL-SGN

26h 33m2 stops

11:45 pm - 11:06 amSGN-STL

24h 21m2 stops

$978Japan Airlines

Find Deal

Wed, Nov 26 - Thu, Dec 11

3:40 pm - 12:35 pmSTL-SGN

32h 55m2 stops

1:55 pm - 1:20 pmSGN-STL

35h 25m2 stops

$991Delta

Find Deal

Wed, Aug 20 - Wed, Sep 3

6:40 am - 10:05 pmSTL-SGN

27h 25m2 stops

11:45 pm - 1:20 pmSGN-STL

25h 35m2 stops

$993Delta

Find Deal

Sun, Aug 17 - Wed, Sep 3

6:35 pm - 10:55 pmSTL-SGN

39h 20m3 stops

11:05 pm - 7:25 pmSGN-STL

32h 20m2 stops

$994United Airlines

Find Deal

Mon, Jan 5 - Sun, Mar 8

1:27 pm - 9:50 pmSTL-SGN

43h 23m2 stops

11:15 pm - 9:55 pmSGN-STL

34h 40m2 stops

$997United Airlines

Find Deal

Thu, Jan 8 - Tue, Mar 31

China Airlines flights from St. Louis to Vietnam

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

China Airlines

Sep 8

STL3:35 pmLambert-St Louis

30h 05m

2 stops

SGN9:40 amHo Chi Minh City

Oct 12

SGN5:30 pmHo Chi Minh City

42h 33m

2 stops

STL12:03 amLambert-St Louis

$947

Find similar

China Airlines

Jan 6

STL4:10 pmLambert-St Louis

28h 50m

2 stops

SGN10:00 amHo Chi Minh City

Mar 24

SGN11:00 amHo Chi Minh City

48h 55m

2 stops

STL11:55 pmLambert-St Louis

$948

Find similar

China Airlines

Oct 7

STL3:57 pmLambert-St Louis

36h 23m

2 stops

SGN4:20 pmHo Chi Minh City

Oct 26

SGN11:00 amHo Chi Minh City

48h 59m

2 stops

STL11:59 pmLambert-St Louis

$949

Find similar

Japan Airlines flights from St. Louis to Vietnam

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

Japan Airlines

Nov 27

STL6:01 amLambert-St Louis

34h 49m

2 stops

SGN5:50 amHo Chi Minh City

Dec 10

SGN11:45 pmHo Chi Minh City

37h 27m

2 stops

STL12:12 amLambert-St Louis

$976

Find similar

Japan Airlines

Nov 26

STL2:17 pmLambert-St Louis

26h 33m

2 stops

SGN5:50 amHo Chi Minh City

Dec 11

SGN11:45 pmHo Chi Minh City

24h 21m

2 stops

STL11:06 amLambert-St Louis

$978

Find similar

Japan Airlines

Oct 27

STL7:16 amLambert-St Louis

34h 34m

2 stops

SGN5:50 amHo Chi Minh City

Nov 20

SGN7:50 amHo Chi Minh City

24h 37m

2 stops

STL7:27 pmLambert-St Louis

$979

Find similar

Fly from

Fly to

Route

Depart

Return

Price

St. LouisHo Chi Minh City

STL - SGN

STLSGN

Lambert-St Louis

Mon 9/8

3:35 pm-9:40 am

2 stops30h 05m

Ho Chi Minh City

Sun 10/12

5:30 pm-12:03 am

2 stops42h 33m

$947

St. LouisHo Chi Minh City

STL - SGN

STLSGN

Lambert-St Louis

Tue 1/6

4:10 pm-10:00 am

2 stops28h 50m

Ho Chi Minh City

Tue 3/24

11:00 am-11:55 pm

2 stops48h 55m

$948

St. LouisHo Chi Minh City

STL - SGN

STLSGN

Lambert-St Louis

Wed 1/7

11:45 am-9:50 pm

2 stops45h 05m

Ho Chi Minh City

Tue 3/17

11:05 pm-12:20 pm

2 stops25h 15m

$966

St. LouisHo Chi Minh City

STL - SGN

STLSGN

Lambert-St Louis

Wed 1/7

8:00 am-9:50 pm

2 stops48h 50m

Ho Chi Minh City

Mon 4/6

7:00 am-12:20 pm

2 stops41h 20m

$970

St. LouisHo Chi Minh City

STL - SGN

STLSGN

Lambert-St Louis

Thu 11/27

6:01 am-5:50 am

2 stops34h 49m

Ho Chi Minh City

Wed 12/10

11:45 pm-12:12 am

2 stops37h 27m

$976

St. LouisHo Chi Minh City

STL - SGN

STLSGN

Lambert-St Louis

Wed 11/26

2:17 pm-5:50 am

2 stops26h 33m

Ho Chi Minh City

Thu 12/11

11:45 pm-11:06 am

2 stops24h 21m

$978

St. LouisHo Chi Minh City

STL - SGN

STLSGN

Lambert-St Louis

Wed 8/20

3:40 pm-12:35 pm

2 stops32h 55m

Ho Chi Minh City

Wed 9/3

1:55 pm-1:20 pm

2 stops35h 25m

$991

St. LouisHo Chi Minh City

STL - SGN

STLSGN

Lambert-St Louis

Sun 8/17

6:40 am-10:05 pm

2 stops27h 25m

Ho Chi Minh City

Wed 9/3

11:45 pm-1:20 pm

2 stops25h 35m

$993

St. LouisHo Chi Minh City

STL - SGN

STLSGN

Lambert-St Louis

Mon 1/5

6:35 pm-10:55 pm

3 stops39h 20m

Ho Chi Minh City

Sun 3/8

11:05 pm-7:25 pm

2 stops32h 20m

$994

St. LouisHo Chi Minh City

STL - SGN

STLSGN

Lambert-St Louis

Thu 1/8

1:27 pm-9:50 pm

2 stops43h 23m

Ho Chi Minh City

Tue 3/31

11:15 pm-9:55 pm

2 stops34h 40m

$997

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 September is, on average, the cheapest month to fly to Vietnam from St. Louis, with most prices found around $1,034. If you don’t want to visit Vietnam in September, then you should wait until April to fly from St. Louis, when ticket prices are also cheap, with an average price of $1,118.

What is the cheapest day to depart on your flight to Vietnam?

According to our data, Tuesday is the cheapest day to fly to Vietnam from St. Louis. The lowest ticket price found for a Tuesday departure recently was $1,258. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Be sure to avoid booking your departure on a Friday as prices are generally higher than usual. According to our data, the average ticket price to Vietnam on Friday is $1,572.

What is the cheapest time of day to depart on your flight to Vietnam?

Flying to Vietnam from St. Louis in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $1,256 when looking at flights departing in the afternoon. At noon is when there is more demand to fly to Vietnam, so prices are often more expensive at around $1,499 per ticket.

How far in advance should I book a flight 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 $1,325 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 $1,132 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

Best Price Found	$507
Fastest flight time	22h 17m
Direct flights	None
Airports in Vietnam	3 airports

The best one-way flight to Vietnam from St. Louis in the past 72 hours is $507. The best round-trip flight deal from St. Louis to Vietnam found on momondo in the last 72 hours is $947.

The fastest flight from St. Louis to Vietnam takes 22h 17m

There are no direct flights from St. Louis to Vietnam. Popular non-direct routes for this connection are Lambert-St Louis Airport - Hanoi Noibai Airport and Lambert-St Louis Airport - Ho Chi Minh City Airport.

There are 3 airports near Vietnam: Hanoi Noibai (HAN), Da Nang (DAD), Ho Chi Minh City (SGN)

Search flight deals

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 2025, there are 10 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
Korean Air	PriceFrom $761	Free Cancellation	Rating 8.4 1,121 reviews	Search Korean Air flights
Delta	PriceFrom $920	Free Cancellation	Rating 8.0 7,981 reviews	Search Delta flights
Japan Airlines	PriceFrom $980	Free Cancellation	Rating 8.3 1,536 reviews	Search Japan Airlines flights
ANA	PriceFrom $988	Free Cancellation	Rating 8.4 922 reviews	Search ANA flights
United Airlines	PriceFrom $995	Free Cancellation	Rating 7.4 8,900 reviews	Search United Airlines flights
American Airlines	PriceFrom $1,042	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Turkish Airlines	PriceFrom $1,065	Free Cancellation	Rating 7.3 3,933 reviews	Search Turkish Airlines flights
EVA Air	PriceFrom $1,193	Free Cancellation	Rating 8.4 1,220 reviews	Search EVA Air flights
Cathay Pacific	PriceFrom $1,246	Free Cancellation	Rating 7.6 949 reviews	Search Cathay Pacific flights
Air Canada	PriceFrom $1,437	Free Cancellation	Rating 7.1 9,851 reviews	Search Air Canada 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.