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Cheap flights from St. Louis to Laos from $1,474

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Laos departing on 9/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from St. Louis to Laos

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
8:55 am - 11:50 pmSTL  Lambert-St Louis-VTE Vientiane Wattay
26h 55m2 stops Toronto Pearson Intl Incheon Intl
Multiple Airlines Logo
12:50 am - 8:20 pmVTE  Vientiane Wattay-STL Lambert-St Louis
55h 30m2 stops Incheon Intl Toronto Pearson Intl
$1,474Multiple Airlines
Thu, Sep 3 - Sun, Sep 13
Multiple Airlines Logo
7:00 am - 11:15 amSTL  Lambert-St Louis-VTE Vientiane Wattay
39h 15m3 stops Seattle/Tacoma Intl Doha Hamad Intl Bangkok Suvarnabhumi
Multiple Airlines Logo
8:30 pm - 7:25 pmVTE  Vientiane Wattay-STL Lambert-St Louis
35h 55m3 stops Bangkok Suvarnabhumi Doha Hamad Intl Chicago O'Hare Intl
$1,482Multiple Airlines
Sat, Nov 14 - Tue, Nov 24
Multiple Airlines Logo
7:00 am - 11:15 amSTL  Lambert-St Louis-VTE Vientiane Wattay
39h 15m3 stops Seattle/Tacoma Intl Doha Hamad Intl Bangkok Suvarnabhumi
Multiple Airlines Logo
8:30 pm - 7:33 pmVTE  Vientiane Wattay-STL Lambert-St Louis
35h 03m3 stops Bangkok Suvarnabhumi Doha Hamad Intl Chicago O'Hare Intl
$1,533Multiple Airlines
Tue, Nov 10 - Wed, Apr 28
Multiple Airlines Logo
7:00 am - 11:15 amSTL  Lambert-St Louis-VTE Vientiane Wattay
39h 15m3 stops Seattle/Tacoma Intl Doha Hamad Intl Bangkok Suvarnabhumi
Multiple Airlines Logo
8:30 pm - 7:33 pmVTE  Vientiane Wattay-STL Lambert-St Louis
35h 03m3 stops Bangkok Suvarnabhumi Doha Hamad Intl Chicago O'Hare Intl
$1,547Multiple Airlines
Tue, Nov 10 - Wed, Apr 28
Multiple Airlines Logo
9:32 am - 10:35 amSTL  Lambert-St Louis-VTE Vientiane Wattay
37h 03m3 stops Chicago O'Hare Intl Doha Hamad Intl Hanoi Noibai
Multiple Airlines Logo
8:30 pm - 7:07 pmVTE  Vientiane Wattay-STL Lambert-St Louis
34h 37m3 stops Bangkok Suvarnabhumi Doha Hamad Intl Dallas/Fort Worth
$1,549Multiple Airlines
Thu, Sep 3 - Mon, Sep 14
Multiple Airlines Logo
2:40 pm - 11:50 pmSTL  Lambert-St Louis-VTE Vientiane Wattay
45h 10m2 stops Toronto Pearson Intl Incheon Intl
Multiple Airlines Logo
12:50 am - 8:20 pmVTE  Vientiane Wattay-STL Lambert-St Louis
55h 30m2 stops Incheon Intl Toronto Pearson Intl
$1,817Multiple Airlines
Fri, Sep 4 - Sun, Sep 13
Multiple Airlines Logo
7:00 am - 11:15 amSTL  Lambert-St Louis-VTE Vientiane Wattay
39h 15m3 stops Seattle/Tacoma Intl Doha Hamad Intl Bangkok Suvarnabhumi
Multiple Airlines Logo
8:30 pm - 7:25 pmVTE  Vientiane Wattay-STL Lambert-St Louis
35h 55m3 stops Bangkok Suvarnabhumi Doha Hamad Intl Chicago O'Hare Intl
$1,877Multiple Airlines
Sat, Nov 14 - Sun, Nov 29
Multiple Airlines Logo
1:25 pm - 12:40 pmSTL  Lambert-St Louis-VTE Vientiane Wattay
35h 15m3 stops Chicago O'Hare Intl Doha Hamad Intl Bangkok Suvarnabhumi
Multiple Airlines Logo
8:30 pm - 7:07 pmVTE  Vientiane Wattay-STL Lambert-St Louis
34h 37m3 stops Bangkok Suvarnabhumi Doha Hamad Intl Dallas/Fort Worth
$2,014Multiple Airlines
Fri, Sep 4 - Mon, Sep 14
Multiple Airlines Logo
4:05 pm - 12:25 amSTL  Lambert-St Louis-VTE Vientiane Wattay
43h 20m2 stops Toronto Pearson Intl Incheon Intl
Multiple Airlines Logo
1:25 am - 3:26 pmVTE  Vientiane Wattay-STL Lambert-St Louis
51h 01m2 stops Incheon Intl Toronto Pearson Intl
$2,325Multiple Airlines
Sat, Nov 14 - Mon, Nov 23
Asiana Airlines Logo
7:05 pm - 1:30 pmSTL  Lambert-St Louis-VTE Vientiane Wattay
29h 25m2 stops San Francisco Incheon Intl
Asiana Airlines Logo
11:50 pm - 11:59 pmVTE  Vientiane Wattay-STL Lambert-St Louis
37h 09m2 stops Incheon Intl Seattle/Tacoma Intl
$2,944Asiana Airlines
Sat, Nov 14 - Sun, Nov 29

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China Southern flights from St. Louis to Laos

Our best China Southern deals on St. Louis to Laos flight tickets
China Southern
Nov 10
STL4:05 pmLambert-St Louis
34h 00m
2 stops
VTE3:05 pmVientiane Wattay
Apr 28
VTE3:50 pmVientiane Wattay
59h 36m
2 stops
STL3:26 pmLambert-St Louis
$3,833
China Southern
Nov 10
STL4:05 pmLambert-St Louis
34h 00m
2 stops
VTE3:05 pmVientiane Wattay
Apr 28
VTE3:50 pmVientiane Wattay
59h 19m
2 stops
STL3:09 pmLambert-St Louis
$3,845
China Southern
Nov 14
STL6:02 amLambert-St Louis
44h 03m
2 stops
VTE3:05 pmVientiane Wattay
Nov 28
VTE4:25 pmVientiane Wattay
38h 40m
2 stops
STL6:05 pmLambert-St Louis
$5,355

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to Laos 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, momondo users made 832,500 searches. Data last updated August 7, 2026.
Use the filters below to find and compare flights from St. Louis to Laos that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisVientiane

STL Lambert-St Louis - VTE Vientiane Wattay

STLVTE

Lambert-St Louis

Thu 9/3

8:55 am-11:50 pm

2 stops26h 55m

Vientiane Wattay

Sun 9/13

12:50 am-8:20 pm

2 stops55h 30m

$1,474

St. LouisVientiane

STL Lambert-St Louis - VTE Vientiane Wattay

STLVTE

Lambert-St Louis

Sat 11/14

7:00 am-11:15 am

3 stops39h 15m

Vientiane Wattay

Tue 11/24

8:30 pm-7:25 pm

3 stops35h 55m

$1,482

St. LouisVientiane

STL Lambert-St Louis - VTE Vientiane Wattay

STLVTE

Lambert-St Louis

Tue 11/10

7:00 am-11:15 am

3 stops39h 15m

Vientiane Wattay

Wed 4/28

8:30 pm-7:33 pm

3 stops35h 03m

$1,533

St. LouisVientiane

STL Lambert-St Louis - VTE Vientiane Wattay

STLVTE

Lambert-St Louis

Tue 11/10

7:00 am-11:15 am

3 stops39h 15m

Vientiane Wattay

Wed 4/28

8:30 pm-7:33 pm

3 stops35h 03m

$1,547

St. LouisVientiane

STL Lambert-St Louis - VTE Vientiane Wattay

STLVTE

Lambert-St Louis

Thu 9/3

9:32 am-10:35 am

3 stops37h 03m

Vientiane Wattay

Mon 9/14

8:30 pm-7:07 pm

3 stops34h 37m

$1,549

St. LouisVientiane

STL Lambert-St Louis - VTE Vientiane Wattay

STLVTE

Lambert-St Louis

Fri 9/4

2:40 pm-11:50 pm

2 stops45h 10m

Vientiane Wattay

Sun 9/13

12:50 am-8:20 pm

2 stops55h 30m

$1,817

St. LouisVientiane

STL Lambert-St Louis - VTE Vientiane Wattay

STLVTE

Lambert-St Louis

Sat 11/14

7:00 am-11:15 am

3 stops39h 15m

Vientiane Wattay

Sun 11/29

8:30 pm-7:25 pm

3 stops35h 55m

$1,877

St. LouisVientiane

STL Lambert-St Louis - VTE Vientiane Wattay

STLVTE

Lambert-St Louis

Fri 9/4

1:25 pm-12:40 pm

3 stops35h 15m

Vientiane Wattay

Mon 9/14

8:30 pm-7:07 pm

3 stops34h 37m

$2,014

St. LouisVientiane

STL Lambert-St Louis - VTE Vientiane Wattay

STLVTE

Lambert-St Louis

Sat 11/14

4:05 pm-12:25 am

2 stops43h 20m

Vientiane Wattay

Mon 11/23

1:25 am-3:26 pm

2 stops51h 01m

$2,325
Quickest round-trip

St. LouisVientiane

STL Lambert-St Louis - VTE Vientiane Wattay

STLVTE

Lambert-St Louis

Sat 11/14

7:05 pm-1:30 pm

2 stops29h 25m

Vientiane Wattay

Sun 11/29

11:50 pm-11:59 pm

2 stops37h 09m

$2,944

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

Cheap St. Louis to Laos flight deals and tips

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

Fastest flight time

37h 03m

Direct flights

None
The fastest flight from St. Louis to Laos takes 37h 03m
There are no direct flights from St. Louis to Laos. There are no popular flight routes from St. Louis to Laos.
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Frequently asked questions about flying from St. Louis to Laos

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

    Prices for flights from Lambert-St Louis Airport to Laos were last updated today.

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Laos.

  • What documentation or ID do you need to fly to Laos?

    The necessary travel and health documents for your Laos trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Frequently asked questions about flying from St. Louis to Laos

  • How do I get Price Alerts for flights from St. Louis to Laos?

    Price Alerts will notify you by email when the price for flights to Laos from St. Louis decreases. To activate this, select your desired travel dates and search for offers. While browsing through offers you’ll see the Price Alert widget toggle. Click it to turn on notifications.

  • How can I save money on flights from St. Louis to Laos with momondo?

    By using tools like our “Price Calendar”, you can see the best day to fly round-trip for your travels. Our “Price Forecast” tool uses AI to predict whether you should purchase or hold off on booking for potentially cheaper prices. Explore shows you all flight options from a city or airport to build your own unique adventure. The Discover blog also provides valuable insights for saving money while booking your experience. After searching you can toggle on “Price Alerts” to track prices for your desired flight and book at the ideal moment.

  • How does momondo find its flight prices?

    momondo shows deals across 700+ competitors all at once. momondo is active in 30 international markets, so you can have access to a wide range of options from airlines and OTAs alike.

Why use momondo?

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

It is quick and easy to find St. Louis to Laos 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 Laos that suits you.

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

Yes. All flights to Laos from St. Louis on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once you have performed a search for St. Louis to Laos flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Yes momondo offers price alerts on flights to Laos from St. Louis. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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