How long is the flight from St. Louis to Southeast Asia?

There are many flights that can get you from St. Louis to Southeast Asia in 26h 15m. Fly via United Airlines, Cathay Pacific, or Delta to get the fastest option. The distance between St. Louis and Southeast Asia is about 9462 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

What are the cheapest airlines to fly from St. Louis to Southeast Asia one-way?

The cheapest airline one-way is Japan Airlines, with whom users have recently found tickets for as low as $293. However, be on the lookout for offers from United Airlines and ANA, as they are both options that can get you from St. Louis to Southeast Asia for a low price.

In terms of precipitation, rainfall in Southeast Asia ranges from 0.4 - 15.7 inches per month. July is typically the wettest month, when rainfall can reach 15.7 in. February is typically the driest time to visit Southeast Asia when rainfall is around 0.4 in.

If weather is an important factor for your trip to Southeast Asia, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 78.8 F).

What are the most popular routes from St. Louis to Southeast Asia?

When deciding which route to take from St. Louis to Southeast Asia consider Lambert-St Louis - Bangkok Suvarnabhumi, Lambert-St Louis - Manila Ninoy Aquino Intl or Lambert-St Louis - Ho Chi Minh City as they are the most popular.

What are the most popular airlines that fly from St. Louis to Southeast Asia?

Before booking your flight from St. Louis to Southeast Asia check out the most popular airlines for this route: United Airlines, Cathay Pacific or ANA.

What is the cheapest time of day to fly from STL to YJX?

When flying from St. Louis to Southeast Asia, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

What airport do you fly from for flights from St. Louis to Southeast Asia?

If you book a flight to Southeast Asia from St. Louis, you will be flying from Lambert-St Louis, which is the city’s only airport. Lambert-St Louis (STL) is located 12.7 mi from the center of St. Louis.

Can I find deals for flights from St. Louis to Southeast Asia that include hotel bookings?

Yes. In addition to deals on St. Louis to Southeast Asia flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from St. Louis to Southeast Asia?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Southeast Asia.

Can I find deals for business class flights from St. Louis to Southeast Asia?

Yes. Cheapflights offers flight deals from St. Louis to Southeast Asia by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$403+ Flights from St. Louis to Southeast Asia

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Cheap flight deals from St. Louis to Southeast Asia

Cheapest flights from St. Louis to Southeast Asia
Explore the most affordable flight options available from St. Louis to Southeast Asia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 28, 2025.

Sat 12/277:00 amSTL - BKK

2 stops37h 50mMultiple Airlines

Sat 1/172:05 pmBKK - STL

2 stops36h 49mMultiple Airlines

Deal found 12/26

$1,487

Sat 12/2710:30 amSTL - BKK

3 stops59h 55mUnited Airlines

Sat 1/179:10 amBKK - STL

2 stops23h 17mUnited Airlines

Deal found 12/26

$1,546

Sat 12/277:00 amSTL - BKK

2 stops39h 10mEVA Air

Sat 1/172:40 pmBKK - STL

2 stops36h 14mEVA Air

Deal found 12/24

$1,549

Mon 12/299:08 amSTL - MNL

2 stops43h 22mMultiple Airlines

Wed 1/1411:50 pmMNL - STL

2 stops52h 04mMultiple Airlines

Deal found 12/26

$1,628

Tue 12/306:41 amSTL - MNL

1 stop24h 19mUnited Airlines

Thu 1/19:55 amMNL - STL

1 stop20h 49mUnited Airlines

Deal found 12/26

$1,662

Sat 12/2710:30 amSTL - CEB

3 stops45h 40mUnited Airlines

Sat 1/179:30 amCEB - STL

2 stops26h 30mUnited Airlines

Deal found 12/26

$1,736

Mon 12/292:45 pmSTL - MNL

2 stops40h 15mUnited Airlines

Wed 1/149:55 amMNL - STL

1 stop19h 42mUnited Airlines

Deal found 12/26

$1,812

Fri 12/266:44 pmSTL - BKK

2 stops32h 11mCathay Pacific

Thu 1/13:05 pmBKK - STL

2 stops44h 51mCathay Pacific

Deal found 12/25

$1,848

Tue 12/304:05 pmSTL - MNL

3 stops29h 15mMultiple Airlines

Thu 1/17:45 pmMNL - STL

3 stops33h 44mMultiple Airlines

Deal found 12/26

$1,864

Fri 12/266:41 amSTL - BKK

2 stops39h 44mUnited Airlines

Thu 1/14:55 pmBKK - STL

3 stops30h 13mUnited Airlines

Deal found 12/25

$1,884

Tue 12/308:00 amSTL - MNL

2 stops31h 35mPhilippine Airlines

Thu 1/111:10 amMNL - STL

1 stop26h 41mPhilippine Airlines

Deal found 12/26

$1,906

Sat 12/275:26 pmSTL - CEB

2 stops27h 49mMultiple Airlines

Sat 1/1712:30 pmCEB - STL

2 stops39h 24mMultiple Airlines

Deal found 12/27

$1,958

Best flights from St. Louis to Southeast Asia
Discover carefully curated flight deals from St. Louis to Southeast Asia that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 28, 2025.

Tue 3/34:30 pmSTL - BKK

3 stops29h 55mUnited Airlines

Tue 3/104:55 pmBKK - STL

3 stops33h 47mUnited Airlines

Deal found 12/25

$901

Tue 1/2011:05 amSTL - SGN

2 stops34h 30mCathay Pacific

Mon 4/276:20 pmSGN - STL

2 stops39h 28mCathay Pacific

Deal found 12/26

$919

Thu 1/296:10 amSTL - BKK

2 stops29h 35mDelta

Wed 2/49:30 pmBKK - STL

2 stops32h 07mDelta

Deal found 12/25

$921

Wed 2/42:50 pmSTL - CEB

2 stops37h 45mMultiple Airlines

Wed 2/1110:50 amCEB - STL

2 stops41h 01mMultiple Airlines

Deal found 12/27

$926

Thu 2/1910:04 amSTL - HKT

2 stops43h 51mQatar Airways

Tue 2/248:20 amHKT - STL

2 stops50h 49mQatar Airways

Deal found 12/27

$1,075

Fri 1/161:35 pmSTL - SIN

2 stops27h 00mAmerican Airlines

Sat 1/318:15 amSIN - STL

2 stops25h 58mAmerican Airlines

Deal found 12/28

$1,129

Mon 3/26:10 amSTL - DPS

2 stops27h 45mKorean Air

Thu 3/51:20 amDPS - STL

2 stops36h 03mKorean Air

Deal found 12/25

$1,456

Mon 1/2611:23 amSTL - DPS

3 stops42h 57mKLM

Mon 2/99:40 pmDPS - STL

3 stops37h 03mKLM

Deal found 12/27

$1,594

Thu 3/55:00 amSTL - BKK

2 stops35h 10mUnited Airlines

Thu 3/124:55 pmBKK - STL

3 stops40h 01mUnited Airlines

Deal found 12/25

$901

Thu 1/2211:05 amSTL - HAN

2 stops34h 00mCathay Pacific

Mon 1/267:30 pmHAN - STL

2 stops41h 29mCathay Pacific

Deal found 12/27

$924

Thu 1/152:50 pmSTL - MNL

2 stops30h 15mMultiple Airlines

Thu 2/1211:50 amMNL - STL

2 stops26h 09mMultiple Airlines

Deal found 12/26

$935

Mon 1/266:10 amSTL - SGN

2 stops28h 10mDelta

Tue 3/311:55 pmSGN - STL

2 stops43h 11mDelta

Deal found 12/26

$938

Mon 3/28:30 amSTL - BKK

3 stops37h 55mUnited Airlines

Tue 3/104:55 pmBKK - STL

3 stops31h 32mUnited Airlines

Deal found 12/25

$901

Mon 1/196:44 pmSTL - SGN

2 stops40h 36mCathay Pacific

Mon 4/276:20 pmSGN - STL

2 stops39h 28mCathay Pacific

Deal found 12/26

$925

Mon 1/196:10 amSTL - KUL

2 stops26h 15mDelta

Mon 1/2611:55 pmKUL - STL

2 stops54h 12mDelta

Deal found 12/27

$939

Thu 1/152:50 pmSTL - MNL

2 stops30h 15mMultiple Airlines

Tue 2/311:50 amMNL - STL

2 stops40h 04mMultiple Airlines

Deal found 12/26

$944

Mon 2/96:45 amSTL - BKK

2 stops28h 35mUnited Airlines

Mon 2/164:55 pmBKK - STL

3 stops40h 31mUnited Airlines

Deal found 12/26

$904

Tue 3/1712:04 pmSTL - KUL

2 stops45h 21mDelta

Wed 4/111:10 pmKUL - STL

2 stops37h 48mDelta

Deal found 12/25

$947

Tue 2/107:04 amSTL - CEB

2 stops38h 16mCathay Pacific

Tue 2/1712:30 pmCEB - STL

2 stops24h 48mCathay Pacific

Deal found 12/27

$976

Tue 2/107:04 amSTL - MNL

2 stops25h 31mMultiple Airlines

Tue 2/1712:35 pmMNL - STL

2 stops24h 43mMultiple Airlines

Deal found 12/27

$996

Sun 3/16:55 pmSTL - BKK

2 stops45h 15mUnited Airlines

Tue 3/104:55 pmBKK - STL

3 stops28h 26mUnited Airlines

Deal found 12/25

$907

Mon 3/164:21 pmSTL - KUL

2 stops41h 04mDelta

Wed 4/111:10 pmKUL - STL

2 stops38h 11mDelta

Deal found 12/25

$947

Mon 2/96:44 pmSTL - HKT

2 stops47h 06mQatar Airways

Tue 2/178:20 amHKT - STL

2 stops50h 55mQatar Airways

Deal found 12/27

$1,292

Wed 3/116:38 amSTL - CEB

2 stops39h 42mCathay Pacific

Tue 3/247:35 pmCEB - STL

2 stops35h 28mCathay Pacific

Deal found 12/26

$991

Sun 3/14:49 pmSTL - BKK

2 stops47h 21mUnited Airlines

Thu 3/124:55 pmBKK - STL

3 stops42h 39mUnited Airlines

Deal found 12/25

$907

Wed 2/42:50 pmSTL - MNL

2 stops30h 15mMultiple Airlines

Fri 2/2011:50 amMNL - STL

2 stops26h 09mMultiple Airlines

Deal found 12/26

$1,005

Mon 2/96:35 amSTL - CNX

2 stops27h 20mDelta

Sun 2/1512:15 amCNX - STL

2 stops29h 27mDelta

Deal found 12/26

$961

Sun 4/2611:14 amSTL - CNX

3 stops38h 31mQatar Airways

Wed 5/68:00 pmCNX - STL

3 stops37h 48mQatar Airways

Deal found 12/26

$1,322

Sat 1/318:45 amSTL - SGN

3 stops73h 10mUnited Airlines

Wed 2/186:00 amSGN - STL

3 stops27h 26mUnited Airlines

Deal found 12/26

$915

Thu 1/297:04 amSTL - MNL

2 stops45h 26mCathay Pacific

Mon 2/25:45 pmMNL - STL

2 stops43h 14mCathay Pacific

Deal found 12/24

$1,032

Last-minute flights from St. Louis to Southeast Asia
Discover last-minute flight deals from St. Louis to Southeast Asia. Data last updated December 28, 2025 and is based on user searches.

Thu 1/152:50 pmSTL - MNL

2 stops30h 15mMultiple Airlines

Thu 2/1211:50 amMNL - STL

2 stops26h 09mMultiple Airlines

Deal found 12/26

$935

Mon 1/196:44 pmSTL - SGN

2 stops40h 36mCathay Pacific

Mon 4/276:20 pmSGN - STL

2 stops41h 28mCathay Pacific

Deal found 12/28

$925

Mon 1/196:10 amSTL - SGN

2 stops28h 10mDelta

Wed 3/258:00 amSGN - STL

2 stops25h 06mDelta

Deal found 12/26

$938

Mon 1/196:10 amSTL - KUL

2 stops26h 15mDelta

Mon 1/2611:55 pmKUL - STL

2 stops54h 12mDelta

Deal found 12/27

$939

Tue 1/206:00 amSTL - SGN

2 stops29h 20mCathay Pacific

Mon 4/2711:05 amSGN - STL

2 stops48h 43mCathay Pacific

Deal found 12/28

$919

Wed 1/218:05 amSTL - SGN

2 stops48h 45mUnited Airlines

Tue 2/311:05 pmSGN - STL

2 stops28h 25mUnited Airlines

Deal found 12/26

$886

Thu 1/222:50 pmSTL - MNL

2 stops30h 15mMultiple Airlines

Thu 1/2911:50 amMNL - STL

2 stops40h 04mMultiple Airlines

Deal found 12/25

$894

Thu 1/229:57 amSTL - SGN

2 stops46h 53mUnited Airlines

Fri 1/307:30 amSGN - STL

2 stops27h 30mUnited Airlines

Deal found 12/25

$923

Thu 1/2211:05 amSTL - HAN

2 stops34h 00mCathay Pacific

Mon 1/267:30 pmHAN - STL

2 stops41h 29mCathay Pacific

Deal found 12/27

$924

Mon 1/262:50 pmSTL - DPS

2 stops43h 05mMultiple Airlines

Sun 2/81:20 amDPS - STL

2 stops50h 34mMultiple Airlines

Deal found 12/27

$934

Thu 1/296:10 amSTL - BKK

2 stops29h 35mDelta

Wed 2/49:30 pmBKK - STL

2 stops32h 07mDelta

Deal found 12/25

$921

Sat 1/318:45 amSTL - SGN

3 stops73h 10mUnited Airlines

Wed 2/186:00 amSGN - STL

3 stops27h 26mUnited Airlines

Deal found 12/26

$915

One-way flights from St. Louis to Southeast Asia
Search for one-way flight options from St. Louis to Southeast Asia. Find affordable one-way fares based on user searches. Data last updated December 28, 2025.

Sun 3/110:11 pmSTL - BKK

3 stops58h 14mMultiple Airlines

Deal found 12/26

$403

Sun 3/87:00 amSTL - SGN

2 stops37h 25mMultiple Airlines

Deal found 12/27

$453

Mon 2/1610:11 pmSTL - SGN

3 stops37h 04mMultiple Airlines

Deal found 12/27

$476

Tue 3/243:50 pmSTL - BKK

2 stops36h 40mMultiple Airlines

Deal found 12/26

$484

Mon 4/207:00 amSTL - SIN

3 stops52h 35mMultiple Airlines

Deal found 12/26

$486

Sun 2/156:55 pmSTL - SGN

3 stops39h 00mUnited Airlines

Deal found 12/27

$493

Wed 2/187:41 amSTL - SGN

2 stops27h 34mANA

Deal found 12/28

$495

Sat 3/285:30 pmSTL - HAN

2 stops28h 40mMultiple Airlines

Deal found 12/27

$497

Tue 3/37:00 amSTL - HAN

2 stops26h 30mJapan Airlines

Deal found 12/28

$499

Wed 2/186:55 pmSTL - SGN

3 stops39h 00mUnited Airlines

Deal found 12/26

$499

Sat 2/712:12 pmSTL - SIN

3 stops52h 48mMultiple Airlines

Deal found 12/26

$501

Fri 3/204:20 pmSTL - MNL

2 stops29h 15mMultiple Airlines

Deal found 12/25

$502

Find flight deals from St. Louis to Southeast Asia

Most accurate provider	Justfly.com 3 stars
Most trusted provider	Justfly.com 3 stars
Round-trip from	$874 (oojo)
One-way from	$403 (Kiwi.com)
Popular in	June
Cheapest in	October
Average price	$1,854

Provider with most accurate pricing for Lambert-St Louis-Manila Ninoy Aquino Intl flight deals.

Search Deals

Provider most trusted by Cheapflights users for Lambert-St Louis-Manila Ninoy Aquino Intl flights.

Search Deals

From Lambert-St Louis to Southeast Asia

Search Deals

One-way flight from Lambert-St Louis to Southeast Asia

Search Deals

Highest demand for flights based on searches. 16% potential increase in price ($284 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($48 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

Cheapflights Fare Finder

Use the filters below to find and compare flights from St. Louis to Southeast Asia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Tue 3/3

4:30 pm-11:25 am

3 stops29h 55m

Bangkok Suvarnabhumi

Tue 3/10

4:55 pm-2:42 pm

3 stops33h 47m

$901

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Thu 3/5

5:00 am-5:10 am

2 stops35h 10m

Bangkok Suvarnabhumi

Thu 3/12

4:55 pm-8:56 pm

3 stops40h 01m

$901

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Mon 3/2

8:30 am-11:25 am

3 stops37h 55m

Bangkok Suvarnabhumi

Tue 3/10

4:55 pm-12:27 pm

3 stops31h 32m

$901

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Mon 2/9

6:45 am-12:20 am

2 stops28h 35m

Bangkok Suvarnabhumi

Mon 2/16

4:55 pm-8:26 pm

3 stops40h 31m

$904

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Sun 3/1

6:55 pm-5:10 am

2 stops45h 15m

Bangkok Suvarnabhumi

Tue 3/10

4:55 pm-9:21 am

3 stops28h 26m

$907

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Sun 3/1

4:49 pm-5:10 am

2 stops47h 21m

Bangkok Suvarnabhumi

Thu 3/12

4:55 pm-11:34 pm

3 stops42h 39m

$907

St. LouisHo Chi Minh City

STL - SGN

STLSGN

Lambert-St Louis

Sat 1/31

8:45 am-10:55 pm

3 stops73h 10m

Ho Chi Minh City

Wed 2/18

6:00 am-8:26 pm

3 stops27h 26m

$915

St. LouisHo Chi Minh City

STL - SGN

STLSGN

Lambert-St Louis

Tue 1/20

11:05 am-10:35 am

2 stops34h 30m

Ho Chi Minh City

Mon 4/27

6:20 pm-9:48 pm

2 stops39h 28m

$919

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Thu 1/29

6:10 am-12:45 am

2 stops29h 35m

Bangkok Suvarnabhumi

Wed 2/4

9:30 pm-4:37 pm

2 stops32h 07m

$921

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Thu 1/22

11:05 am-10:05 am

2 stops34h 00m

Hanoi Noibai

Mon 1/26

7:30 pm-11:59 pm

2 stops41h 29m

$924

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/26

Showing 1-10 of 60 results

...

Best time to book a flight from St. Louis to Southeast Asia

Have a flexible travel schedule? Discover the best time to fly to Southeast Asia from St. Louis with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from St. Louis to Southeast Asia

What is the cheapest month to book a flight from St. Louis to Southeast Asia?

Currently, July is the cheapest month in which you can book a flight from St. Louis to Southeast Asia (average of $549). Flying from St. Louis to Southeast Asia in June is currently the most expensive (average of $1,273). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Southeast Asia

Read through reviews of airlines operating flights from St. Louis to Southeast Asia, such as ANA, Japan Airlines, and Delta. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

ANA

8.4

Very good

1,049 reviews

Reviews

1 / 20

10.0

Excellent

Anonymous,Dec 2025

HND - LAX

I always take ANA because of the great service and overall experience.

ANA

8.4

Very good

1,049 reviews

ANA

8.4

Very good

1,049 reviews

Reviews

1 / 20

10.0

Excellent

Anonymous,Dec 2025

HND - LAX

I always take ANA because of the great service and overall experience.

Japan Airlines

8.3

Very good

1,662 reviews

ANA

8.4

Very good

1,049 reviews

Reviews

1 / 20

10.0

Excellent

Anonymous,Dec 2025

HND - LAX

I always take ANA because of the great service and overall experience.

Delta

7.9

Good

8,017 reviews

ANA

8.4

Very good

1,049 reviews

Reviews

1 / 20

10.0

Excellent

Anonymous,Dec 2025

HND - LAX

I always take ANA because of the great service and overall experience.

Cathay Pacific

7.6

Good

1,106 reviews

ANA

8.4

Very good

1,049 reviews

Reviews

1 / 20

10.0

Excellent

Anonymous,Dec 2025

HND - LAX

I always take ANA because of the great service and overall experience.

United Airlines

7.4

Good

9,114 reviews

ANA

8.4

Very good

1,049 reviews

Reviews

1 / 20

10.0

Excellent

Anonymous,Dec 2025

HND - LAX

I always take ANA because of the great service and overall experience.

Related info for your journey

What airport do you fly from for flights from St. Louis to Southeast Asia?
If you book a flight to Southeast Asia from St. Louis, you will be flying from Lambert-St Louis, which is the city’s only airport. Lambert-St Louis (STL) is located 12.7 mi from the center of St. Louis.
How long is the flight from St. Louis to Southeast Asia?
There are many flights that can get you from St. Louis to Southeast Asia in 26h 15m. Fly via United Airlines, Cathay Pacific, or Delta to get the fastest option. The distance between St. Louis and Southeast Asia is about 9462 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.
What are the cheapest airlines to fly from St. Louis to Southeast Asia one-way?
The cheapest airline one-way is Japan Airlines, with whom users have recently found tickets for as low as $293. However, be on the lookout for offers from United Airlines and ANA, as they are both options that can get you from St. Louis to Southeast Asia for a low price.
What are the most popular routes from St. Louis to Southeast Asia?
When deciding which route to take from St. Louis to Southeast Asia consider Lambert-St Louis - Bangkok Suvarnabhumi, Lambert-St Louis - Manila Ninoy Aquino Intl or Lambert-St Louis - Ho Chi Minh City as they are the most popular.
Can I find deals for flights from St. Louis to Southeast Asia that include hotel bookings?
Yes. In addition to deals on St. Louis to Southeast Asia flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from St. Louis to Southeast Asia?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Southeast Asia.
Can I find deals for business class flights from St. Louis to Southeast Asia?
Yes. Cheapflights offers flight deals from St. Louis to Southeast Asia by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from St. Louis to Southeast Asia?
Currently, July is the cheapest month in which you can book a flight from St. Louis to Southeast Asia (average of $549). Flying from St. Louis to Southeast Asia in June is currently the most expensive (average of $1,273). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Top 10 airlines flying from St. Louis to Southeast Asia

Airline	Cheapest	Average	Flexibility	On-time
Korean Air	Cheapest$761	Average$1,267	FlexibilityNo cancel fee	On-time81%
Qatar Airways	Cheapest$897	Average$1,367	FlexibilityNo cancel fee	On-time68%
China Airlines	Cheapest$903	Average$994	FlexibilityNo cancel fee	On-time70%
Air Canada	Cheapest$907	Average$1,536	FlexibilityNo cancel fee	On-time67%
Cathay Pacific	Cheapest$915	Average$1,301	FlexibilityNo cancel fee	On-time72%
United Airlines	Cheapest$936	Average$1,303	FlexibilityNo cancel fee	On-time69%
Japan Airlines	Cheapest$946	Average$1,131	FlexibilityNo cancel fee	On-time79%
Delta	Cheapest$960	Average$1,520	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$966	Average$1,182	FlexibilityNo cancel fee	On-time71%
ANA	Cheapest$986	Average$1,186	FlexibilityNo cancel fee	On-time80%

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$403+ Cheap flights from St. Louis (STL) to Southeast Asia

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/1. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheap flight deals from St. Louis to Southeast Asia

Cheapest flights from St. Louis to Southeast AsiaExplore the most affordable flight options available from St. Louis to Southeast Asia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 28, 2025.

Explore the most affordable flight options available from St. Louis to Southeast Asia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 28, 2025.

Find flight deals from St. Louis to Southeast Asia

Keep the following information in mind while searching for St. Louis to Southeast Asia flight deals. Data was last updated December 28, 2025.

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Reviews of airlines servicing Southeast Asia

Read through reviews of airlines operating flights from St. Louis to Southeast Asia, such as ANA, Japan Airlines, and Delta. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Southeast Asia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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Top 10 airlines flying from St. Louis to Southeast Asia

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Cheapest flights from St. Louis to Southeast Asia
Explore the most affordable flight options available from St. Louis to Southeast Asia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 28, 2025.