Latest deals
Insights
FAQs
Reviews
Price Alerts

Cheap flights from St. Louis to Southeast Asia from $469

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 8/28. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from St. Louis to Southeast Asia

Cheap round-trip flights

Air Canada Logo
1:30 pm - 6:20 amSTL-MNL
27h 50m2 stops
Air Canada Logo
9:25 am - 3:18 pmMNL-STL
42h 53m2 stops
$879Air Canada
Find Deal
jue., sep. 4 - lun., sep. 15
Air Canada Logo
4:05 pm - 6:20 amSTL-MNL
25h 15m2 stops
Air Canada Logo
9:25 am - 3:18 pmMNL-STL
42h 53m2 stops
$886Air Canada
Find Deal
jue., sep. 4 - lun., sep. 15
ANA Logo
11:45 am - 9:50 pmSTL-SGN
45h 05m2 stops
ANA Logo
11:05 pm - 12:20 pmSGN-STL
25h 15m2 stops
$966ANA
Find Deal
mié., ene. 7 - mar., mar. 17
Japan Airlines Logo
7:23 am - 11:00 pmSTL-BKK
27h 37m2 stops
Japan Airlines Logo
10:05 pm - 1:23 pmBKK-STL
27h 18m2 stops
$966Japan Airlines
Find Deal
lun., sep. 22 - mié., oct. 1
ANA Logo
8:00 am - 9:50 pmSTL-SGN
48h 50m2 stops
ANA Logo
7:00 am - 12:20 pmSGN-STL
41h 20m2 stops
$970ANA
Find Deal
mié., ene. 7 - lun., abr. 6
Japan Airlines Logo
6:01 am - 5:50 amSTL-SGN
34h 49m2 stops
Japan Airlines Logo
11:45 pm - 12:12 amSGN-STL
37h 27m2 stops
$976Japan Airlines
Find Deal
jue., nov. 27 - mié., dic. 10
United Airlines Logo
6:00 am - 11:55 pmSTL-BKK
29h 55m2 stops
United Airlines Logo
9:35 am - 7:42 pmBKK-STL
46h 07m2 stops
$987United Airlines
Find Deal
mié., sep. 24 - mar., oct. 7
United Airlines Logo
6:00 am - 11:55 pmSTL-BKK
29h 55m2 stops
United Airlines Logo
7:00 am - 10:00 pmBKK-STL
27h 00m3 stops
$990United Airlines
Find Deal
mié., sep. 24 - jue., oct. 2
Cathay Pacific Logo
6:45 am - 5:40 pmSTL-DPS
45h 55m2 stops
Cathay Pacific Logo
6:45 pm - 10:59 pmDPS-STL
41h 14m2 stops
$1,363Cathay Pacific
Find Deal
jue., ago. 28 - jue., sep. 4
Cathay Pacific Logo
11:14 am - 5:40 amSTL-SIN
28h 26m2 stops
Cathay Pacific Logo
1:25 am - 10:27 pmSIN-STL
35h 02m2 stops
$1,368Cathay Pacific
Find Deal
jue., ene. 1 - lun., ene. 19

Delta flights from St. Louis to Southeast Asia

Our best Delta deals on St. Louis to Southeast Asia flight tickets
Delta
Dec 8
STL7:30 amLambert-St Louis
26h 50m
2 stops
BKK11:20 pmBangkok Suvarnabhumi
Dec 16
BKK9:30 pmBangkok Suvarnabhumi
28h 50m
2 stops
STL1:20 pmLambert-St Louis
$978
Find similar
Delta
Sep 20
STL7:40 amLambert-St Louis
27h 35m
2 stops
SGN11:15 pmHo Chi Minh City
Sep 24
SGN11:45 pmHo Chi Minh City
35h 39m
2 stops
STL11:24 pmLambert-St Louis
$993
Find similar
Delta
Sep 20
STL8:40 amLambert-St Louis
24h 55m
2 stops
HAN9:35 pmHanoi Noibai
Sep 24
HAN11:10 pmHanoi Noibai
35h 59m
2 stops
STL11:09 pmLambert-St Louis
$998
Find similar

United Airlines flights from St. Louis to Southeast Asia

Our best United Airlines deals on St. Louis to Southeast Asia flight tickets
United Airlines
Sep 24
STL6:00 amLambert-St Louis
29h 55m
2 stops
BKK11:55 pmBangkok Suvarnabhumi
Oct 7
BKK9:35 amBangkok Suvarnabhumi
46h 07m
2 stops
STL7:42 pmLambert-St Louis
$987
Find similar
United Airlines
Sep 24
STL6:00 amLambert-St Louis
29h 55m
2 stops
BKK11:55 pmBangkok Suvarnabhumi
Oct 2
BKK7:00 amBangkok Suvarnabhumi
27h 00m
3 stops
STL10:00 pmLambert-St Louis
$990
Find similar
United Airlines
Jan 7
STL7:05 amLambert-St Louis
38h 45m
2 stops
BKK10:50 amBangkok Suvarnabhumi
Mar 4
BKK9:25 amBangkok Suvarnabhumi
44h 38m
2 stops
STL5:03 pmLambert-St Louis
$991
Find similar

momondo 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, momondo users made 832,500 searches. Data last updated julio 31, 2025.
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. LouisManila

STL - MNL

STLMNL

Lambert-St Louis

jue. 9/4

1:30 pm-6:20 am

2 stops27h 50m

Manila Ninoy Aquino Intl

lun. 9/15

9:25 am-3:18 pm

2 stops42h 53m

$879

St. LouisManila

STL - MNL

STLMNL

Lambert-St Louis

jue. 9/4

4:05 pm-6:20 am

2 stops25h 15m

Manila Ninoy Aquino Intl

lun. 9/15

9:25 am-3:18 pm

2 stops42h 53m

$886

St. LouisHo Chi Minh City

STL - SGN

STLSGN

Lambert-St Louis

mié. 1/7

11:45 am-9:50 pm

2 stops45h 05m

Ho Chi Minh City

mar. 3/17

11:05 pm-12:20 pm

2 stops25h 15m

$966

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

lun. 9/22

7:23 am-11:00 pm

2 stops27h 37m

Bangkok Suvarnabhumi

mié. 10/1

10:05 pm-1:23 pm

2 stops27h 18m

$966

St. LouisHo Chi Minh City

STL - SGN

STLSGN

Lambert-St Louis

mié. 1/7

8:00 am-9:50 pm

2 stops48h 50m

Ho Chi Minh City

lun. 4/6

7:00 am-12:20 pm

2 stops41h 20m

$970

St. LouisHo Chi Minh City

STL - SGN

STLSGN

Lambert-St Louis

jue. 11/27

6:01 am-5:50 am

2 stops34h 49m

Ho Chi Minh City

mié. 12/10

11:45 pm-12:12 am

2 stops37h 27m

$976

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

mié. 9/24

6:00 am-11:55 pm

2 stops29h 55m

Bangkok Suvarnabhumi

mar. 10/7

9:35 am-7:42 pm

2 stops46h 07m

$987

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

mié. 9/24

6:00 am-11:55 pm

2 stops29h 55m

Bangkok Suvarnabhumi

jue. 10/2

7:00 am-10:00 pm

3 stops27h 00m

$990

St. LouisDenpasar

STL - DPS

STLDPS

Lambert-St Louis

jue. 8/28

6:45 am-5:40 pm

2 stops45h 55m

Denpasar Bali Ngurah Rai

jue. 9/4

6:45 pm-10:59 pm

2 stops41h 14m

$1,363

St. LouisSingapore

STL - SIN

STLSIN

Lambert-St Louis

jue. 1/1

11:14 am-5:40 am

2 stops28h 26m

Singapore Changi

lun. 1/19

1:25 am-10:27 pm

2 stops35h 02m

$1,368

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Southeast Asia from

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 September is, on average, the cheapest month to fly to Southeast Asia from St. Louis, with most prices found around $1,151. If you don’t want to visit Southeast Asia in September, then you should wait until January to fly from St. Louis, when ticket prices are also cheap, with an average price of $1,154.

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 weeks ahead of your departure date. In general, you can expect to find flights to Southeast Asia for around $1,326 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 $908 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

Best Price Found

$469

Fastest flight time

20h 35m

Direct flights

None

Airports in Southeast Asia

8 airports
The best one-way flight to Southeast Asia from St. Louis in the past 72 hours is $469. The best round-trip flight deal from St. Louis to Southeast Asia found on momondo in the last 72 hours is $879.
The fastest flight from St. Louis to Southeast Asia takes 20h 35m
There are no direct flights from St. Louis to Southeast Asia. Popular non-direct routes for this connection are Lambert-St Louis Airport - Hanoi Noibai Airport, Lambert-St Louis Airport - Kuala Lumpur Intl Airport and Lambert-St Louis Airport - Phuket City Airport.
There are 8 airports near Southeast Asia: Phuket City (HKT), Cebu City Mactan Intl (CEB), Kuala Lumpur Intl (KUL), Bangkok Suvarnabhumi (BKK), Hanoi Noibai (HAN), Singapore Changi (SIN), Manila Ninoy Aquino Intl (MNL), Ho Chi Minh City (SGN)
Search flight deals

  • 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?

  • 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?

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
Korean AirPriceFrom $761Free CancellationRating
8.4
1,121 reviews
Search Korean Air flights
Qatar AirwaysPriceFrom $897Free CancellationRating
7.4
3,609 reviews
Search Qatar Airways flights
United AirlinesPriceFrom $940Free CancellationRating
7.4
8,900 reviews
Search United Airlines flights
Air CanadaPriceFrom $980Free CancellationRating
7.1
9,851 reviews
Search Air Canada flights
Japan AirlinesPriceFrom $980Free CancellationRating
8.3
1,536 reviews
Search Japan Airlines flights
ANAPriceFrom $988Free CancellationRating
8.4
922 reviews
Search ANA flights
DeltaPriceFrom $990Free CancellationRating
8.0
7,981 reviews
Search Delta flights
American AirlinesPriceFrom $1,042Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
Turkish AirlinesPriceFrom $1,065Free CancellationRating
7.3
3,933 reviews
Search Turkish Airlines flights
EVA AirPriceFrom $1,193Free CancellationRating
8.4
1,220 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.

An easier way to manage your Southeast Asia trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
mar. 8/5
mar. 8/12
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Southeast Asia

Popular cities in Southeast Asia

Popular flights according to clicks in the last 7 days on momondo
Flights to New Yorkfrom $39
Flights to Londonfrom $283
Flights to Bangkokfrom $515
Flights to Tokyofrom $493
Flights to Los Angelesfrom $37
Flights to Parisfrom $255
Flights to Copenhagenfrom $268
Flights to Istanbulfrom $435
Flights to Manilafrom $523
Flights to Miamifrom $58
Flights to Romefrom $178
Flights to Chicagofrom $59