$920 Cheap Flights from St. Louis (STL) to Vientiane (VTE)

View $920 flight on Sun, Mar 1, 2026Opens in a new window

Popular airlines from St. Louis Lambert Intl. Airport (STL) to Wattay Intl. Airport (VTE)

Cheap Flights from St. Louis to Vientiane (STL-VTE)

Prices were available within the past 7 days and start at $920 for one-way flights and $1,469 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Sun, Mar 1 - Thu, Apr 2
STL
St. Louis
VTE
Vientiane
$1,469 Roundtrip, found 4 hours ago
$1,469
Roundtrip
found 4 hours ago
Select American Airlines flight, departing Sun, Mar 1 from St. Louis to Vientiane, returning Thu, Apr 2, priced at $1,469 found 4 hours ago
American Airlines
Sun, Mar 1 - Thu, Apr 2
STL
St. Louis
VTE
Vientiane
$1,530 Roundtrip, found 22 hours ago
$1,530
Roundtrip
found 22 hours ago
Select American Airlines flight, departing Sun, Mar 1 from St. Louis to Vientiane, returning Thu, Apr 2, priced at $1,530 found 22 hours ago
American Airlines
Sun, Mar 1 - Thu, Apr 2
STL
St. Louis
VTE
Vientiane
$1,611 Roundtrip, found 5 days ago
$1,611
Roundtrip
found 5 days ago
Select American Airlines flight, departing Sun, Mar 1 from St. Louis to Vientiane, returning Thu, Apr 2, priced at $1,611 found 5 days ago
Air Canada
Tue, Nov 4 - Tue, Nov 18
STL
St. Louis
VTE
Vientiane
$1,615 Roundtrip, found 2 days ago
$1,615
Roundtrip
found 2 days ago
Select Air Canada flight, departing Tue, Nov 4 from St. Louis to Vientiane, returning Tue, Nov 18, priced at $1,615 found 2 days ago
American Airlines
Sun, Mar 1 - Thu, Apr 2
STL
St. Louis
VTE
Vientiane
$1,671 Roundtrip, found 4 days ago
$1,671
Roundtrip
found 4 days ago
Select American Airlines flight, departing Sun, Mar 1 from St. Louis to Vientiane, returning Thu, Apr 2, priced at $1,671 found 4 days ago
Air Canada
Sat, Oct 25 - Thu, Nov 13
STL
St. Louis
VTE
Vientiane
$1,752 Roundtrip, found 2 days ago
$1,752
Roundtrip
found 2 days ago
Select Air Canada flight, departing Sat, Oct 25 from St. Louis to Vientiane, returning Thu, Nov 13, priced at $1,752 found 2 days ago
Alaska Airlines
Mon, Nov 3 - Mon, Dec 8
STL
St. Louis
VTE
Vientiane
$1,773 Roundtrip, found 6 days ago
$1,773
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Mon, Nov 3 from St. Louis to Vientiane, returning Mon, Dec 8, priced at $1,773 found 6 days ago
Alaska Airlines
Thu, Oct 23 - Mon, Oct 27
STL
St. Louis
VTE
Vientiane
$1,774 Roundtrip, found 5 days ago
$1,774
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Thu, Oct 23 from St. Louis to Vientiane, returning Mon, Oct 27, priced at $1,774 found 5 days ago
United
Tue, Oct 21 - Sun, Oct 26
STL
St. Louis
VTE
Vientiane
$1,799 Roundtrip, found 3 days ago
$1,799
Roundtrip
found 3 days ago
Select United flight, departing Tue, Oct 21 from St. Louis to Vientiane, returning Sun, Oct 26, priced at $1,799 found 3 days ago
United
Thu, Oct 30 - Wed, Nov 12
STL
St. Louis
VTE
Vientiane
$1,801 Roundtrip, found 2 days ago
$1,801
Roundtrip
found 2 days ago
Select United flight, departing Thu, Oct 30 from St. Louis to Vientiane, returning Wed, Nov 12, priced at $1,801 found 2 days ago

Alternative airports near Vientiane

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Wattay Intl. VTE. Cheapest and Closest option available. Average driving time to city center is 8 minutes. Flights from $1,835
VTE
Wattay Intl.
CheapestClosest
Average driving time to city center8 min
Flights from $1,835

Frequently asked questions

How much does a flight from Lambert-St. Louis Intl. Airport (STL) to Wattay Intl. Airport (VTE) cost?
Lock in a cheap one-way flight from $920 or cheap return flight from $1,469 from Lambert-St. Louis Intl. Airport (STL) to Wattay Intl. Airport (VTE) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Lambert-St. Louis Intl. Airport (STL) to Wattay Intl. Airport (VTE)?
Traveling in March is a good way to save, as it's the cheapest month for flights between STL and VTE. You'll often find the lowest prices during off-peak months.
What is the cheapest airline that flies from Lambert-St. Louis Intl. Airport (STL) to Wattay Intl. Airport (VTE)?
To find the cheapest airline flying from STL to VTE, use Expedia's filter tool. Customize your search based on what's important to you, such as preferred carriers and number of stops. You can then sort your results by "Price (lowest to highest)" to list the most affordable options first.
How many flights per day from Lambert-St. Louis Intl. Airport (STL) to Wattay Intl. Airport (VTE)?
Nonstop flights from Lambert-St. Louis Intl. Airport (STL) to Wattay Intl. Airport (VTE) aren't available daily, so you'll have to take a flight with a layover. Explore your options with our filter tool. Enter your dates and pick either "1 Stop" or "2+ Stops."
What day of the week has the most flights from STL to VTE?
You'll usually find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can change from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Lambert-St. Louis Intl. Airport (STL) to Wattay Intl. Airport (VTE)?
To avoid possible delays on the Lambert-St. Louis Intl. Airport (STL) to Wattay Intl. Airport (VTE) route, fly before 3 PM. Later departures have a 22% higher chance of cancellation.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Lambert-St. Louis Intl. Airport (STL) to Wattay Intl. Airport (VTE) last-minute?
Booking your flight from STL to VTE right before your journey is usually more expensive. However, if there's some wiggle room with your departure dates and times, you could grab a cheap last-minute fare.
Is it cheaper to book a STL to VTE flight and hotel package?
Booking a STL to VTE flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your trip in one place. Pick from our impressive range of hotels and then add activities, car rentals and flights to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Lambert-St. Louis Intl. Airport (STL) to Wattay Intl. Airport (VTE)?
If you booked your STL to VTE flight in the last 24 hours, you may be able to cancel or modify it without fees. Depending on the airline and the ticket type you purchased, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal if you want more information.

Travel information

Origin airport
Lambert-St. Louis Intl.
Destination airport
Wattay Intl.
Roundtrip price
$1,468
Distance
8429 mi

Book with confidence

St. Louis to Vientiane Flights

The cheapest times to fly from St. Louis to Vientiane

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from St. Louis to Vientiane are during the month of March. You can find some of the cheapest flights from St. Louis to Vientiane with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from St. Louis to Vientiane

Sunday is one of the best days to book for cheap flights from St. Louis to Vientiane: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from St. Louis to Vientiane

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from St. Louis to Vientiane in 2025. You can also book with separate airlines for your outbound and return journeys, from $920 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap St. Louis to Vientiane flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your St. Louis to Vientiane airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

St. Louis to Vientiane Flights

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*Available to One Key members.