Cheap flights from St. Louis to Southeast Asia from $503
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Southeast Asia departing on 11/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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How to get the cheapest flight ticket from St. Louis to Southeast Asia
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
What is the cheapest month to fly to Southeast Asia?
The month of October is, on average, the cheapest month to fly to Southeast Asia from St. Louis, with most prices found around $1,157. If you don’t want to visit Southeast Asia in October, then you should wait until January to fly from St. Louis, when ticket prices are also cheap, with an average price of $1,166.
What is the cheapest day to depart on your flight to Southeast Asia?
The cheapest day to depart from St. Louis to Southeast Asia is on a Monday when prices can be found for as low as $1,334. If your travel schedule is flexible, try to avoid departing on a Thursday because tickets tend to average around $1,546. These prices are subject to change though, so be sure to set up a Price Alert for flights to Southeast Asia.
What is the cheapest time of day to depart on your flight to Southeast Asia?
In the morning is the cheapest time of day to fly from St. Louis to Southeast Asia when you can find flight prices for as low as $1,339. Flying to Southeast Asia in the morning is an ideal time because this is during off-peak travel hours. Try not to purchase tickets at noon because they tend to be around $1,754. Of course, these prices can vary depending on the time of year and what airport you fly to.
How far in advance should I book a flight to Southeast Asia?
You are more likely to see cheaper flights to Southeast Asia from St. Louis when booking 25 weeks ahead of your departure date. In general, you can expect to find flights to Southeast Asia for around $1,368 when searching 25 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Southeast Asia from St. Louis for as low as $765 on momondo.
What is the cheapest airline that flies from Lambert-St Louis to Southeast Asia?
Japan Airlines, United Airlines, and American Airlines are the most popular carriers operating from Lambert-St Louis to Southeast Asia
What airlines fly to Southeast Asia?
United Airlines, Cathay Pacific and ANA are the top three most popular airlines that fly to Southeast Asia from St. Louis according to our data. United Airlines is the first choice among our users, with 36% of people opting to fly with this airline when traveling to Southeast Asia. Keep in mind that there are 12 different airlines that fly to Southeast Asia on a routine basis, so you have a few additional options to choose from.
Cheap St. Louis to Southeast Asia flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from St. Louis to Southeast Asia
Best Price Found | $503 |
|---|---|
Fastest flight time | 20h 35m |
Direct flights | None |
Airports in Southeast Asia | 7 airports |
When did momondo last update prices for flights from Lambert-St Louis Airport to Southeast Asia?
Prices for flights from Lambert-St Louis Airport to Southeast Asia were last updated today.
How many operators does momondo search for flights from Lambert-St Louis Airport to Southeast Asia?
As of June 2025, there are 12 operators available to choose from for flights from Lambert-St Louis Airport to Southeast Asia.
How old do you have to be to fly from Lambert-St Louis Airport to Southeast Asia?
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 Southeast Asia.
What documentation or ID do you need to fly to Southeast Asia?
The required travel and health documents for your Southeast Asia 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 Southeast Asia. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from St. Louis to Southeast Asia?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from St. Louis to Southeast Asia is Boeing 737-800 Passenger/BBJ2 (winglets) (19.83% of total bookings). The next most popular plane models are Boeing 737-700 Passenger/BBJ1 (winglets) (16.95%), Boeing 737 MAX 8 (15.46%), and Airbus A319 (6.70%).
Best airlines flying from St. Louis to Southeast Asia
Compare and see reviews for airlines that fly from St. Louis to Southeast Asia with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $761 | Free Cancellation | Rating 8.4 1,088 reviews | |||
| PriceFrom $897 | Free Cancellation | Rating 7.4 3,584 reviews | |||
| PriceFrom $940 | Free Cancellation | Rating 7.4 8,790 reviews | |||
| PriceFrom $988 | Free Cancellation | Rating 8.3 882 reviews | |||
| PriceFrom $990 | Free Cancellation | Rating 8.0 7,946 reviews | |||
| PriceFrom $994 | Free Cancellation | Rating 8.3 1,490 reviews | |||
| PriceFrom $1,038 | Free Cancellation | Rating 7.1 9,537 reviews | |||
| PriceFrom $1,042 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $1,065 | Free Cancellation | Rating 7.3 3,848 reviews | |||
| PriceFrom $1,219 | Free Cancellation | Rating 7.5 892 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from St. Louis to Southeast Asia?
momondo collates all your flight options in one place and lets you filter them to find the perfect flight from St. Louis to Southeast Asia. momondo saves you time and could save you money on your trip.
Can I find flights from St. Louis to Southeast Asia with flexible booking policies on momondo?
Yes. All flights to Southeast Asia 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 Southeast Asia?
Once you have performed a search for St. Louis to Southeast Asia 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 Southeast Asia right now. Can momondo alert me if prices change?
If you are not ready to book a flight from St. Louis to Southeast Asia now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Southeast Asia and let you know when they change.