HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Southeast Asia

$511+ 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 9/13. Fares are subject to change and may not be available on all flights or dates of travel.
STL — BKK
Jul 30 — Aug 61
Wed 7/30
Wed 8/6
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

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

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 July 25, 2025.

Round-trip from

$886
(Air Canada)

One-way from

$511
(Orbitz)

Popular in

June

Cheapest in

October

Average price

$1,679
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 ($281 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($45 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2025
Search Deals

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 July 25, 2025.

This Air Canada deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/274:05 pmSTL - MNL
2 stops49h 40mAir Canada
Wed 11/1210:25 amMNL - STL
2 stops43h 04mAir Canada
Deal found 7/24$884
This Air Canada deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/259:15 amSTL - MNL
2 stops32h 30mMultiple Airlines
Sat 11/810:25 amMNL - STL
2 stops21h 14mMultiple Airlines
Deal found 7/23$925
This oojo deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/86:30 pmSTL - SGN
2 stops27h 10mChina Airlines
Sun 10/125:30 pmSGN - STL
2 stops42h 33mChina Airlines
Deal found 7/22$947
This Orbitz deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/179:15 amSTL - CEB
2 stops26h 05mMultiple Airlines
Thu 9/181:20 amCEB - STL
2 stops55h 37mMultiple Airlines
Deal found 7/24$955
This Delta deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/286:00 amSTL - BKK
2 stops29h 25mDelta
Wed 9/39:40 pmBKK - STL
2 stops37h 43mDelta
Deal found 7/24$978
This oojo deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/143:57 pmSTL - HAN
2 stops30h 38mChina Airlines
Tue 11/45:30 pmHAN - STL
2 stops34h 48mChina Airlines
Deal found 7/22$978
This Gurufare deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/262:17 pmSTL - SGN
2 stops26h 33mJapan Airlines
Thu 12/117:50 amSGN - STL
2 stops29h 22mJapan Airlines
Deal found 7/24$979
This United Airlines deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/298:25 amSTL - BKK
2 stops32h 10mUnited Airlines
Tue 10/289:25 amBKK - STL
2 stops48h 34mUnited Airlines
Deal found 7/23$984
This Delta deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2211:51 amSTL - SGN
2 stops36h 44mDelta
Tue 11/258:05 amSGN - STL
2 stops27h 57mDelta
Deal found 7/24$990
This United Airlines deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/286:15 amSTL - SGN
3 stops28h 40mUnited Airlines
Sun 11/2311:05 pmSGN - STL
2 stops30h 22mUnited Airlines
Deal found 7/24$994
This oojo deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/287:00 amSTL - MNL
2 stops37h 55mChina Airlines
Mon 11/33:15 amMNL - STL
2 stops50h 03mChina Airlines
Deal found 7/23$994
This Delta deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/203:55 pmSTL - HAN
2 stops30h 45mDelta
Wed 9/2411:10 pmHAN - STL
2 stops35h 59mDelta
Deal found 7/23$998

Cheapflights Fare Finder

 
Customize your flight search to find flights from St. Louis to Southeast Asia that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 25, 2025.
Use the filters below to find and compare flights from St. Louis to Southeast Asia that are best for you.

Fly from

St. Louis

Fly to

Southeast Asia

Route

Depart

Return

Price

St. LouisManila

STL - MNL

STLMNL

Lambert-St Louis

Mon 10/27

4:05 pm-6:45 am

2 stops49h 40m

Manila Ninoy Aquino Intl

Wed 11/12

10:25 am-3:29 pm

2 stops43h 04m

$884

St. LouisManila

STL - MNL

STLMNL

Lambert-St Louis

Sat 10/25

9:15 am-6:45 am

2 stops32h 30m

Manila Ninoy Aquino Intl

Sat 11/8

10:25 am-5:39 pm

2 stops21h 14m

$925

St. LouisHo Chi Minh City

STL - SGN

STLSGN

Lambert-St Louis

Mon 9/8

6:30 pm-9:40 am

2 stops27h 10m

Ho Chi Minh City

Sun 10/12

5:30 pm-12:03 am

2 stops42h 33m

$947

St. LouisCebu City

STL - CEB

STLCEB

Lambert-St Louis

Sun 8/17

9:15 am-12:20 am

2 stops26h 05m

Cebu City Mactan Intl

Thu 9/18

1:20 am-7:57 pm

2 stops55h 37m

$955

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Thu 8/28

6:00 am-11:25 pm

2 stops29h 25m

Bangkok Suvarnabhumi

Wed 9/3

9:40 pm-11:23 pm

2 stops37h 43m

$978

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Tue 10/14

3:57 pm-10:35 am

2 stops30h 38m

Hanoi Noibai

Tue 11/4

5:30 pm-3:18 pm

2 stops34h 48m

$978

St. LouisHo Chi Minh City

STL - SGN

STLSGN

Lambert-St Louis

Wed 11/26

2:17 pm-5:50 am

2 stops26h 33m

Ho Chi Minh City

Thu 12/11

7:50 am-12:12 am

2 stops29h 22m

$979

St. LouisHo Chi Minh City

STL - SGN

STLSGN

Lambert-St Louis

Tue 1/6

4:10 pm-10:00 am

2 stops28h 50m

Ho Chi Minh City

Tue 3/24

5:50 pm-2:11 pm

2 stops32h 21m

$981

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Mon 9/29

8:25 am-4:35 am

2 stops32h 10m

Bangkok Suvarnabhumi

Tue 10/28

9:25 am-9:59 pm

2 stops48h 34m

$984

St. LouisHo Chi Minh City

STL - SGN

STLSGN

Lambert-St Louis

Mon 1/12

1:27 pm-9:50 pm

2 stops43h 23m

Ho Chi Minh City

Mon 2/23

11:05 pm-12:20 pm

2 stops26h 15m

$986

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/23

Showing 1-10 of 54 results
1
2
3
...
6

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 $950). Flying from St. Louis to Southeast Asia in December is currently the most expensive (average of $1,568). 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?

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 July 25, 2025.

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.

Reviews of airlines servicing Southeast Asia

Get insights into the airlines that provide service to Southeast Asia. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Southeast Asia. Reviews last updated July 25, 2025.
Read through reviews of airlines operating flights from St. Louis to Southeast Asia, such as EVA Air, ANA, and Korean Air. 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.
EVA Air
8.4
Very good
1,220 reviews

Food

8.1

Overall

8.4

Boarding

8.4

Comfort

8.3

Crew

8.6

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
EVA Air
8.4
Very good
1,220 reviews
EVA Air
8.4
Very good
1,220 reviews

Food

8.1

Overall

8.4

Boarding

8.4

Comfort

8.3

Crew

8.6

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
ANA
8.4
Very good
921 reviews
EVA Air
8.4
Very good
1,220 reviews

Food

8.1

Overall

8.4

Boarding

8.4

Comfort

8.3

Crew

8.6

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
Korean Air
8.4
Very good
1,114 reviews
EVA Air
8.4
Very good
1,220 reviews

Food

8.1

Overall

8.4

Boarding

8.4

Comfort

8.3

Crew

8.6

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
Japan Airlines
8.3
Very good
1,529 reviews
EVA Air
8.4
Very good
1,220 reviews

Food

8.1

Overall

8.4

Boarding

8.4

Comfort

8.3

Crew

8.6

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
China Airlines
8.3
Very good
750 reviews
EVA Air
8.4
Very good
1,220 reviews

Food

8.1

Overall

8.4

Boarding

8.4

Comfort

8.3

Crew

8.6

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount

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?

    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 Air Canada, with whom users have recently found tickets for as low as $518. However, be on the lookout for offers from Japan 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 - Ho Chi Minh City, Lambert-St Louis - Bangkok Suvarnabhumi or Lambert-St Louis - Cebu City Mactan Intl 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 $950). Flying from St. Louis to Southeast Asia in December is currently the most expensive (average of $1,568). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for St. Louis to Southeast Asia

See prices for flight routes from nearby airports that may be better suited for you.
St. Louis to Narita flights
St. Louis to Haneda flights
Kansas City to Suvarnabhumi flights
Kansas City to Narita flights
St. Louis to Ho Chi Minh City flights
Kansas City to Haneda flights
St. Louis to Suvarnabhumi flights
St. Louis to Incheon Intl flights
St. Louis to Cebu City flights
Kansas City to Manila flights
St. Louis to Manila flights
Springfield to Haneda flights
Springfield to Narita flights
St. Louis to Hyderabad flights
Kansas City to Ho Chi Minh City flights
Kansas City to Incheon Intl flights
Kansas City to Mumbai flights
St. Louis to Hongqiao Intl flights
St. Louis to Taiwan Taoyuan Intl flights
St. Louis to Denpasar flights
Kansas City to Fukuoka flights
Kansas City to Denpasar flights
St. Louis to New Delhi flights
St. Louis to Chennai flights
St. Louis to Pu Dong flights
St. Louis to Mumbai flights
Kansas City to New Delhi flights
Kansas City to Hyderabad flights
Kansas City to Cebu City flights
St. Louis to Fukuoka flights
St. Louis to Sung Shan flights
St. Louis to Okinawa flights
St. Louis to Bangalore flights
Kansas City to Kathmandu flights
St. Louis to Gimpo Intl flights
St. Louis to Kathmandu flights
St. Louis to Kuala Lumpur Intl flights
St. Louis to Singapore flights
Kansas City to Da Nang flights
St. Louis to Kansai Intl flights
Kansas City to Singapore flights
Kansas City to Taiwan Taoyuan Intl flights
St. Louis to Phuket City flights
Kansas City to Phuket City flights
Springfield to Manila flights
St. Louis to Ahmedabad flights
Springfield to Suvarnabhumi flights
Kansas City to Kansai Intl flights

Top 10 airlines flying from St. Louis to Southeast Asia

Discover the top 10 airlines that operate flights from St. Louis to Southeast Asia. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 25, 2025.
AirlineCheapestAverageFlexibilityOn-time
Korean AirCheapest$761Average$1,591FlexibilityNo cancel feeOn-time81%
Qatar AirwaysCheapest$897Average$1,499FlexibilityNo cancel feeOn-time68%
United AirlinesCheapest$940Average$1,348FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$980Average$1,528FlexibilityNo cancel feeOn-time67%
Japan AirlinesCheapest$980Average$1,325FlexibilityNo cancel feeOn-time79%
ANACheapest$988Average$1,223FlexibilityNo cancel feeOn-time80%
DeltaCheapest$990Average$1,549FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$1,042Average$1,211FlexibilityNo cancel feeOn-time71%
Turkish AirlinesCheapest$1,065Average$1,188FlexibilityNo cancel feeOn-time77%
Philippine AirlinesCheapest$1,066Average$1,518FlexibilityNo cancel feeOn-time60%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.