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

The cheapest airline one-way is Delta, with whom users have recently found tickets for as low as $589. However, be on the lookout for offers from ANA and Cathay Pacific, 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 - Denpasar Bali Ngurah Rai 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: American Airlines, Air Canada or Finnair.

What is the cheapest month to fly from St. Louis to Southeast Asia?

Our data shows that August tends to be the cheapest month to fly to Southeast Asia from St. Louis. Users have commonly found prices around $1,504 for the month, but tickets can be as low as $1,143. Due to multiple factors, prepare for potentially higher prices in June.

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.

$550+ Flights from St. Louis to Southeast Asia

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Cheap flight deals from St. Louis to Southeast Asia

Most accurate provider	AranGrant 3 stars
Most trusted provider	AranGrant 3 stars
Round-trip from	$1,003 (Air Canada)
One-way from	$550 (Orbitz)
Popular in	June
Cheapest in	August
Average price	$1,566

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

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

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From Lambert-St Louis to Southeast Asia

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

Search Deals

Highest demand for flights based on searches. 17% potential increase in price ($314 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($45 potential savings vs. average RT price).

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Average for round-trip flights in May 2025

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Find 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 May 1, 2025.

Mon 10/612:28 pmSTL - SGN

2 stops45h 27mANA

Mon 10/1311:15 pmSGN - STL

2 stops27h 04mANA

Deal found 4/29

$988

Wed 9/176:15 amSTL - SGN

2 stops27h 40mUnited Airlines

Wed 10/811:15 pmSGN - STL

2 stops36h 29mUnited Airlines

Deal found 4/30

$998

Thu 9/181:30 pmSTL - SIN

2 stops28h 35mAir Canada

Sun 10/59:10 amSIN - STL

2 stops47h 47mAir Canada

Deal found 4/30

$1,003

Wed 9/106:00 amSTL - SGN

2 stops28h 45mMultiple Airlines

Tue 10/1412:05 amSGN - STL

2 stops35h 51mMultiple Airlines

Deal found 4/30

$1,024

Mon 10/62:55 pmSTL - SGN

2 stops31h 00mEVA Air

Sun 10/121:50 amSGN - STL

2 stops58h 06mEVA Air

Deal found 4/29

$1,042

Tue 9/303:35 pmSTL - MNL

2 stops35h 15mChina Airlines

Thu 10/94:50 pmMNL - STL

2 stops44h 06mChina Airlines

Deal found 4/30

$1,042

Fri 9/124:05 pmSTL - MNL

2 stops49h 15mAir Canada

Fri 9/199:25 amMNL - STL

2 stops47h 32mAir Canada

Deal found 4/30

$1,052

Mon 9/83:35 pmSTL - SGN

2 stops30h 05mChina Airlines

Sat 10/112:05 amSGN - STL

2 stops57h 51mChina Airlines

Deal found 4/30

$1,060

Tue 9/304:05 pmSTL - MNL

2 stops49h 15mMultiple Airlines

Thu 10/99:10 amMNL - STL

2 stops23h 47mMultiple Airlines

Deal found 4/29

$1,065

Tue 11/187:00 amSTL - HKT

2 stops34h 50mQatar Airways

Tue 12/212:50 amHKT - STL

2 stops36h 06mQatar Airways

Deal found 4/30

$1,068

Thu 10/302:55 pmSTL - BKK

2 stops30h 55mChina Airlines

Tue 11/42:05 pmBKK - STL

2 stops46h 51mChina Airlines

Deal found 4/30

$1,094

Thu 8/289:17 amSTL - BKK

2 stops32h 43mANA

Wed 9/39:35 pmBKK - STL

2 stops28h 51mANA

Deal found 4/30

$1,095

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 May 1, 2025.

Thu 9/181:30 pmSTL - SIN

2 stops28h 35mAir Canada

Sun 10/59:10 amSIN - STL

2 stops47h 47mAir Canada

Deal found 4/30

$1,003

Tue 9/304:05 pmSTL - MNL

2 stops49h 15mMultiple Airlines

Thu 10/99:10 amMNL - STL

2 stops23h 47mMultiple Airlines

Deal found 4/29

$1,065

Sun 5/111:41 pmSTL - SIN

2 stops39h 44mUnited Airlines

Wed 5/219:00 amSIN - STL

1 stop20h 52mUnited Airlines

Deal found 4/30

$1,108

Sun 10/197:00 amSTL - HKT

2 stops36h 50mQatar Airways

Sun 10/269:05 amHKT - STL

2 stops50h 51mQatar Airways

Deal found 4/29

$1,146

Tue 5/136:52 amSTL - MNL

2 stops25h 48mJapan Airlines

Thu 6/510:05 amMNL - STL

2 stops22h 12mJapan Airlines

Deal found 4/30

$1,177

Sun 5/43:29 pmSTL - BKK

2 stops44h 21mCathay Pacific

Thu 5/88:05 amBKK - STL

2 stops26h 40mCathay Pacific

Deal found 4/29

$1,204

Mon 5/126:30 amSTL - BKK

2 stops40h 25mEVA Air

Mon 6/94:45 pmBKK - STL

2 stops33h 22mEVA Air

Deal found 4/29

$1,238

Sat 8/166:00 amSTL - HKT

2 stops28h 10mDelta

Sat 8/2311:25 pmHKT - STL

2 stops37h 13mDelta

Deal found 4/29

$1,285

Thu 9/48:55 amSTL - MNL

2 stops26h 04mKorean Air

Sun 9/143:05 amMNL - STL

2 stops32h 57mKorean Air

Deal found 4/29

$1,315

Wed 7/212:28 pmSTL - SIN

2 stops40h 57mFinnair

Wed 7/169:35 pmSIN - STL

2 stops33h 58mFinnair

Deal found 4/30

$1,344

Mon 8/41:20 pmSTL - KUL

2 stops27h 40mANA

Tue 8/197:15 amKUL - STL

2 stops42h 10mANA

Deal found 4/30

$1,349

Fri 9/193:35 pmSTL - MNL

1 stop23h 30mPhilippine Airlines

Sat 10/411:05 amMNL - STL

1 stop24h 54mPhilippine Airlines

Deal found 4/28

$1,441

Last-minute flights from St. Louis to Southeast Asia
Discover last-minute flight deals from St. Louis to Southeast Asia. Data last updated May 1, 2025 and is based on user searches.

Wed 4/303:40 pmSTL - BKK

2 stops44h 10mMultiple Airlines

Mon 5/1211:00 amBKK - STL

2 stops23h 45mMultiple Airlines

Deal found 4/30

$1,174

Wed 4/305:45 amSTL - CEB

2 stops40h 05mCathay Pacific

Wed 5/2112:00 pmCEB - STL

2 stops46h 52mCathay Pacific

Deal found 4/30

$1,202

Thu 5/11:30 pmSTL - SIN

2 stops52h 35mAir Canada

Wed 6/411:55 pmSIN - STL

2 stops33h 03mAir Canada

Deal found 4/30

$1,155

Thu 5/16:30 amSTL - MNL

2 stops25h 45mANA

Thu 5/82:40 pmMNL - STL

2 stops37h 07mANA

Deal found 4/30

$1,185

Fri 5/26:00 amSTL - BKK

2 stops34h 35mUnited Airlines

Sun 5/259:35 amBKK - STL

2 stops55h 28mUnited Airlines

Deal found 4/29

$1,173

Fri 5/22:19 pmSTL - BKK

2 stops29h 01mQatar Airways

Sun 5/258:40 amBKK - STL

2 stops51h 24mQatar Airways

Deal found 4/29

$1,186

Fri 5/210:17 amSTL - SGN

2 stops43h 03mMultiple Airlines

Sun 5/1111:05 amSGN - STL

2 stops47h 59mMultiple Airlines

Deal found 4/28

$1,203

Sun 5/43:29 pmSTL - BKK

2 stops44h 21mCathay Pacific

Thu 5/88:05 amBKK - STL

2 stops26h 40mCathay Pacific

Deal found 4/29

$1,204

Mon 5/53:08 pmSTL - DPS

2 stops34h 32mChina Airlines

Mon 5/123:40 pmDPS - STL

2 stops45h 19mChina Airlines

Deal found 4/30

$1,310

Mon 5/510:31 amSTL - DPS

2 stops42h 09mMultiple Airlines

Mon 5/129:25 pmDPS - STL

3 stops35h 33mMultiple Airlines

Deal found 4/30

$1,511

Mon 5/54:15 pmSTL - DPS

2 stops36h 20mQatar Airways

Sun 5/1112:35 amDPS - STL

2 stops34h 17mQatar Airways

Deal found 4/30

$1,756

Mon 5/59:40 amSTL - BKK

2 stops30h 55mANA

Wed 6/49:35 pmBKK - STL

2 stops31h 18mANA

Deal found 4/30

$2,673

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 May 1, 2025.

Wed 10/16:30 pmSTL - BKK

2 stops34h 10mMultiple Airlines

Deal found 4/30

$550

Sat 5/106:14 pmSTL - SGN

2 stops41h 01mDelta

Deal found 4/29

$589

Mon 5/129:55 pmSTL - SGN

3 stops46h 40mMultiple Airlines

Deal found 4/28

$599

Mon 9/298:27 amSTL - BKK

2 stops33h 33mANA

Deal found 4/30

$600

Sat 5/35:27 pmSTL - SGN

2 stops35h 53mCathay Pacific

Deal found 4/28

$607

Sun 9/285:43 pmSTL - BKK

2 stops46h 52mUnited Airlines

Deal found 4/30

$609

Sat 5/31:41 pmSTL - SGN

3 stops46h 34mUnited Airlines

Deal found 4/28

$639

Fri 10/37:30 amSTL - BKK

2 stops29h 35mDelta

Deal found 4/30

$646

Wed 5/146:30 amSTL - MNL

2 stops26h 35mMultiple Airlines

Deal found 4/30

$685

Mon 5/126:30 amSTL - BKK

2 stops40h 40mEVA Air

Deal found 4/29

$690

Tue 5/136:30 amSTL - DPS

2 stops43h 45mEVA Air

Deal found 4/29

$726

Tue 5/136:30 amSTL - DPS

3 stops52h 25mMultiple Airlines

Deal found 4/29

$756

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. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Thu 9/18

1:30 pm-7:05 am

2 stops28h 35m

Singapore Changi

Sun 10/5

9:10 am-7:57 pm

2 stops47h 47m

$1,003

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Thu 8/28

9:17 am-6:00 am

2 stops32h 43m

Bangkok Suvarnabhumi

Wed 9/3

9:35 pm-2:26 pm

2 stops28h 51m

$1,095

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Mon 9/29

11:51 am-11:25 pm

2 stops47h 34m

Bangkok Suvarnabhumi

Tue 10/14

2:35 am-8:49 pm

2 stops30h 14m

$1,105

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

Sun 5/11

1:41 pm-6:25 pm

2 stops39h 44m

Singapore Changi

Wed 5/21

9:00 am-4:52 pm

1 stop20h 52m

$1,108

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Sun 9/28

5:43 pm-4:35 am

2 stops46h 52m

Bangkok Suvarnabhumi

Wed 10/15

9:35 am-6:13 pm

2 stops44h 38m

$1,111

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Fri 9/19

6:00 am-6:55 am

2 stops36h 55m

Bangkok Suvarnabhumi

Sat 9/27

9:05 pm-11:59 pm

2 stops38h 54m

$1,117

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Wed 10/1

6:00 am-6:55 am

2 stops36h 55m

Bangkok Suvarnabhumi

Fri 10/31

7:35 am-11:56 pm

2 stops52h 21m

$1,154

St. LouisCebu City

STL - CEB

STLCEB

Lambert-St Louis

Wed 5/7

6:00 am-10:05 pm

2 stops27h 05m

Cebu City Mactan Intl

Tue 5/27

9:15 am-11:59 pm

2 stops27h 44m

$1,164

St. LouisManila

STL - MNL

STLMNL

Lambert-St Louis

Tue 5/13

6:52 am-9:40 pm

2 stops25h 48m

Manila Ninoy Aquino Intl

Thu 6/5

10:05 am-7:17 pm

2 stops22h 12m

$1,177

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Fri 8/29

8:26 am-5:50 am

2 stops33h 24m

Bangkok Suvarnabhumi

Fri 9/12

12:25 am-10:59 pm

2 stops34h 34m

$1,178

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

Showing 1-10 of 57 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, March is the cheapest month in which you can book a flight from St. Louis to Southeast Asia (average of $955). Flying from St. Louis to Southeast Asia in December is currently the most expensive (average of $1,574). 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.

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.

Rainfall in Southeast Asia by month

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.

Temperature in Southeast Asia by month

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).

Reviews of airlines servicing Southeast Asia

Read reviews from past customers who have flown EVA Air, Korean Air and Japan Airlines from St. Louis to Southeast Asia. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

EVA Air

8.4

Very good

1,186 reviews

Reviews

1 / 20

10.0

Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop

EVA Air

8.4

Very good

1,186 reviews

EVA Air

8.4

Very good

1,186 reviews

Reviews

1 / 20

10.0

Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop

Korean Air

8.4

Very good

1,068 reviews

EVA Air

8.4

Very good

1,186 reviews

Reviews

1 / 20

10.0

Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop

Japan Airlines

8.3

Very good

1,464 reviews

EVA Air

8.4

Very good

1,186 reviews

Reviews

1 / 20

10.0

Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop

China Airlines

8.3

Very good

732 reviews

EVA Air

8.4

Very good

1,186 reviews

Reviews

1 / 20

10.0

Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop

ANA

8.3

Very good

852 reviews

EVA Air

8.4

Very good

1,186 reviews

Reviews

1 / 20

10.0

Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop

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.
What are the cheapest airlines to fly from St. Louis to Southeast Asia one-way?
The cheapest airline one-way is Delta, with whom users have recently found tickets for as low as $589. However, be on the lookout for offers from ANA and Cathay Pacific, 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 - Denpasar Bali Ngurah Rai 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, March is the cheapest month in which you can book a flight from St. Louis to Southeast Asia (average of $955). Flying from St. Louis to Southeast Asia in December is currently the most expensive (average of $1,574). 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
United Airlines	Cheapest$940	Average$1,365	FlexibilityNo cancel fee	On-time69%
Delta	Cheapest$990	Average$1,562	FlexibilityNo cancel fee	On-timeN/A
ANA	Cheapest$993	Average$1,259	FlexibilityNo cancel fee	On-time80%
Japan Airlines	Cheapest$994	Average$1,338	FlexibilityNo cancel fee	On-time79%
Air Canada	Cheapest$1,038	Average$1,402	FlexibilityNo cancel fee	On-time67%
Turkish Airlines	Cheapest$1,065	Average$1,198	FlexibilityNo cancel fee	On-time77%
American Airlines	Cheapest$1,070	Average$1,205	FlexibilityNo cancel fee	On-time71%
Korean Air	Cheapest$1,124	Average$1,763	FlexibilityNo cancel fee	On-time81%
Qatar Airways	Cheapest$1,148	Average$1,649	FlexibilityNo cancel fee	On-time68%
Cathay Pacific	Cheapest$1,200	Average$1,417	FlexibilityNo cancel fee	On-time72%

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$550+ 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 10/1. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from St. Louis to Southeast Asia with Cheapflights

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Cheap 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 May 1, 2025.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find 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 May 1, 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 May 1, 2025.

Cheapflights Fare Finder

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

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.

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?

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

Find hourly flight availability from St. Louis to Southeast Asia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated May 1, 2025.

Rainfall in Southeast Asia by month

Plan your trip to Southeast Asia by taking into account the average rainfall totals by month.

Temperature in Southeast Asia by month

Plan your trip to Southeast Asia by taking into account the average temperature totals by month.

Reviews of airlines servicing Southeast Asia

Read reviews from past customers who have flown EVA Air, Korean Air and Japan Airlines from St. Louis to Southeast Asia. Reviews also offer insight into each airline's 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.

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

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

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

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

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

Can I find deals for business class flights 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 May 1, 2025.