What airlines fly to Southeast Asia?

United Airlines, Cathay Pacific and Japan Airlines 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 49% of people opting to fly with this airline when traveling to Southeast Asia. Keep in mind that there are 11 different airlines that fly to Southeast Asia 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 Southeast Asia?

Qatar Airways, Etihad Airways, and United Airlines are the most popular carriers operating from Lambert-St Louis to Southeast Asia

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 May 2026, there are 11 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.

$565 Cheap Flights from St. Louis to Southeast Asia in 2026

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Find the cheapest flights from St. Louis to Southeast Asia

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

4:32 pm - 6:15 am

STL

BKK

25h 43m

2 stops

2:40 pm - 3:30 pm

BKK

STL

36h 50m

2 stops

$1,031Etihad Airways

Sat, Oct 17 - Mon, Oct 26

6:06 am - 6:45 am

STL

BKK

36h 39m

2 stops

8:30 am - 5:54 pm

BKK

STL

46h 24m

2 stops

$1,037Etihad Airways

Thu, Oct 1 - Mon, Nov 16

8:00 am - 9:55 pm

STL

SGN

25h 55m

2 stops

11:15 pm - 9:24 pm

SGN

STL

34h 09m

2 stops

$1,118United Airlines

Wed, Sep 16 - Wed, Oct 7

6:00 am - 10:05 pm

STL

SGN

28h 05m

3 stops

11:15 pm - 7:41 pm

SGN

STL

32h 26m

2 stops

$1,122United Airlines

Wed, Sep 16 - Wed, Oct 7

2:40 pm - 6:20 am

STL

MNL

50h 40m

2 stops

10:25 am - 3:30 pm

MNL

STL

43h 05m

2 stops

$1,135Air Canada

Sun, Sep 6 - Mon, Nov 9

9:23 am - 6:45 am

STL

MNL

32h 22m

2 stops

10:25 am - 3:30 pm

MNL

STL

43h 05m

2 stops

$1,142Air Canada

Sat, Oct 31 - Mon, Nov 16

9:31 am - 12:15 am

STL

MNL

25h 44m

2 stops

10:50 am - 11:42 pm

MNL

STL

25h 52m

2 stops

$1,148Cathay Pacific

Mon, Aug 10 - Mon, Aug 24

9:31 am - 10:50 am

STL

CEB

36h 19m

2 stops

12:00 pm - 11:42 pm

CEB

STL

24h 42m

2 stops

$1,151Cathay Pacific

Wed, Aug 19 - Wed, Sep 2

4:12 pm - 8:00 am

STL

CEB

26h 48m

2 stops

11:35 pm - 11:56 pm

CEB

STL

37h 21m

2 stops

$1,503Philippine Airlines

Sun, May 24 - Sun, Jun 14

4:12 pm - 10:35 am

STL

CEB

29h 23m

2 stops

2:35 pm - 11:56 pm

CEB

STL

46h 21m

2 stops

$1,608Philippine Airlines

Tue, Jun 2 - Tue, Jun 23

Etihad Airways flights from St. Louis to Southeast Asia

Our best Etihad Airways deals on St. Louis to Southeast Asia flight tickets

Etihad Airways

Oct 17

STL4:32 pmLambert-St Louis

25h 43m

2 stops

BKK6:15 amBangkok Suvarnabhumi

Oct 26

BKK2:40 pmBangkok Suvarnabhumi

36h 50m

2 stops

STL3:30 pmLambert-St Louis

$1,031

Etihad Airways

Oct 25

STL7:38 amLambert-St Louis

34h 57m

2 stops

BKK6:35 amBangkok Suvarnabhumi

Oct 30

BKK8:50 pmBangkok Suvarnabhumi

34h 12m

2 stops

STL7:02 pmLambert-St Louis

$1,036

Etihad Airways

Oct 1

STL6:06 amLambert-St Louis

36h 39m

2 stops

BKK6:45 amBangkok Suvarnabhumi

Nov 16

BKK8:30 amBangkok Suvarnabhumi

46h 24m

2 stops

STL5:54 pmLambert-St Louis

$1,037

Qatar Airways flights from St. Louis to Southeast Asia

Our best Qatar Airways deals on St. Louis to Southeast Asia flight tickets

Qatar Airways

Sep 15

STL9:46 amLambert-St Louis

34h 04m

2 stops

SIN8:50 amSingapore Changi

Sep 21

SIN3:15 amSingapore Changi

29h 48m

2 stops

STL8:03 pmLambert-St Louis

$1,112

Qatar Airways

Oct 19

STL7:00 amLambert-St Louis

35h 20m

2 stops

BKK6:20 amBangkok Suvarnabhumi

Dec 21

BKK8:30 pmBangkok Suvarnabhumi

36h 01m

2 stops

STL7:31 pmLambert-St Louis

$1,200

Qatar Airways

Nov 12

STL7:00 amLambert-St Louis

34h 40m

2 stops

BKK6:40 amBangkok Suvarnabhumi

Dec 13

BKK3:00 amBangkok Suvarnabhumi

33h 59m

2 stops

STL11:59 pmLambert-St Louis

$1,208

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Sat 10/17

4:32 pm-6:15 am

2 stops25h 43m

Bangkok Suvarnabhumi

Mon 10/26

2:40 pm-3:30 pm

2 stops36h 50m

$1,031

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Thu 10/1

6:06 am-6:45 am

2 stops36h 39m

Bangkok Suvarnabhumi

Mon 11/16

8:30 am-5:54 pm

2 stops46h 24m

$1,037

St. LouisHo Chi Minh City

STL - SGN

STLSGN

Lambert-St Louis

Wed 9/16

8:00 am-9:55 pm

2 stops25h 55m

Ho Chi Minh City

Wed 10/7

11:15 pm-9:24 pm

2 stops34h 09m

$1,118

St. LouisHo Chi Minh City

STL - SGN

STLSGN

Lambert-St Louis

Wed 9/16

6:00 am-10:05 pm

3 stops28h 05m

Ho Chi Minh City

Wed 10/7

11:15 pm-7:41 pm

2 stops32h 26m

$1,122

St. LouisManila

STL - MNL

STLMNL

Lambert-St Louis

Sun 9/6

2:40 pm-6:20 am

2 stops50h 40m

Manila Ninoy Aquino Intl

Mon 11/9

10:25 am-3:30 pm

2 stops43h 05m

$1,135

St. LouisManila

STL - MNL

STLMNL

Lambert-St Louis

Sat 10/31

9:23 am-6:45 am

2 stops32h 22m

Manila Ninoy Aquino Intl

Mon 11/16

10:25 am-3:30 pm

2 stops43h 05m

$1,142

Quickest round-trip

St. LouisManila

STL - MNL

STLMNL

Lambert-St Louis

Mon 8/10

9:31 am-12:15 am

2 stops25h 44m

Manila Ninoy Aquino Intl

Mon 8/24

10:50 am-11:42 pm

2 stops25h 52m

$1,148

St. LouisCebu City

STL - CEB

STLCEB

Lambert-St Louis

Wed 8/19

9:31 am-10:50 am

2 stops36h 19m

Cebu City Mactan Intl

Wed 9/2

12:00 pm-11:42 pm

2 stops24h 42m

$1,151

St. LouisCebu City

STL - CEB

STLCEB

Lambert-St Louis

Sun 5/24

4:12 pm-8:00 am

2 stops26h 48m

Cebu City Mactan Intl

Sun 6/14

11:35 pm-11:56 pm

2 stops37h 21m

$1,503

St. LouisCebu City

STL - CEB

STLCEB

Lambert-St Louis

Tue 6/2

4:12 pm-10:35 am

2 stops29h 23m

Cebu City Mactan Intl

Tue 6/23

2:35 pm-11:56 pm

2 stops46h 21m

$1,608

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 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

Prices

Airlines

What is the cheapest month to fly to Southeast Asia?

The month of August is, on average, the cheapest month to fly to Southeast Asia from St. Louis, with most prices found around $511. If you don’t want to visit Southeast Asia in August, then you should wait until July to fly from St. Louis, when ticket prices are also cheap, with an average price of $539.

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

You are more likely to see cheaper flights to Southeast Asia from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to Southeast Asia for around $1,278 when searching 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 $1,036 on momondo.

Can stopping save me money on St. Louis to Southeast Asia flights?

No. A direct flight is the cheapest option for a flight between St. Louis to Southeast Asia.

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

Fastest flight time	22h 20m
Direct flights	None

The fastest flight from St. Louis to Southeast Asia takes 22h 20m

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

Search flight deals

Frequently asked questions about flying from St. Louis to Southeast Asia

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 May 2026, there are 11 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 MAX 8 (25.81% of total bookings). The next most popular plane models are Boeing 737-800 Passenger/BBJ2 (winglets) (18.18%), Embraer 175 (7.19%), and Airbus A319 (6.05%).

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
Delta	PriceFrom $881	Free Cancellation	Rating 7.9 8,450 reviews	Search Delta flights
Cathay Pacific	PriceFrom $888	Free Cancellation	Rating 7.6 1,342 reviews	Search Cathay Pacific flights
American Airlines	PriceFrom $903	Free Cancellation	Rating 7.1 11,643 reviews	Search American Airlines flights
China Airlines	PriceFrom $903	Free Cancellation	Rating 8.3 826 reviews	Search China Airlines flights
Air Canada	PriceFrom $907	Free Cancellation	Rating 7.1 11,072 reviews	Search Air Canada flights
Japan Airlines	PriceFrom $914	Free Cancellation	Rating 8.3 1,825 reviews	Search Japan Airlines flights
United Airlines	PriceFrom $923	Free Cancellation	Rating 7.4 9,751 reviews	Search United Airlines flights
ANA	PriceFrom $951	Free Cancellation	Rating 8.3 1,211 reviews	Search ANA flights
Philippine Airlines	PriceFrom $971	Free Cancellation	Rating 7.3 998 reviews	Search Philippine Airlines flights
EVA Air	PriceFrom $1,048	Free Cancellation	Rating 8.5 1,457 reviews	Search EVA Air flights

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.