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Cheap flights from St. Louis to Bangkok from $480

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 Bangkok departing on 2/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from St. Louis to Bangkok

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
6:35 am - 12:55 am
STL
-
BKK
29h 20m
2 stops
Delta Logo
9:30 pm - 11:58 pm
BKK
-
STL
38h 28m
2 stops
$882Delta
Mon, Mar 2 - Mon, Mar 9
United Airlines Logo
8:45 am - 11:25 am
STL
-
BKK
37h 40m
3 stops
United Airlines Logo
4:55 pm - 10:13 am
BKK
-
STL
30h 18m
3 stops
$903United Airlines
Mon, Feb 9 - Wed, Feb 18
Multiple Airlines Logo
7:00 am - 12:35 pm
STL
-
BKK
40h 35m
2 stops
Multiple Airlines Logo
1:45 pm - 11:59 pm
BKK
-
STL
22h 14m
2 stops
$910Multiple Airlines
Thu, Mar 5 - Thu, Mar 12
Multiple Airlines Logo
4:46 pm - 12:00 pm
STL
-
BKK
31h 14m
2 stops
Multiple Airlines Logo
1:10 pm - 3:50 pm
BKK
-
STL
38h 40m
2 stops
$920Multiple Airlines
Sat, Apr 25 - Sun, May 3
Delta Logo
6:35 am - 12:55 am
STL
-
BKK
29h 20m
2 stops
Delta Logo
12:55 am - 12:21 am
BKK
-
STL
35h 26m
2 stops
$931Delta
Mon, Feb 9 - Mon, Mar 23
Delta Logo
5:56 pm - 12:55 am
STL
-
BKK
41h 59m
2 stops
Delta Logo
12:55 am - 12:21 am
BKK
-
STL
35h 26m
2 stops
$937Delta
Sun, Feb 8 - Mon, Mar 23
Multiple Airlines Logo
7:00 am - 12:00 pm
STL
-
BKK
41h 00m
2 stops
Multiple Airlines Logo
5:50 pm - 3:50 pm
BKK
-
STL
58h 00m
2 stops
$948Multiple Airlines
Wed, Apr 8 - Tue, Apr 21
Multiple Airlines Logo
7:00 am - 4:40 pm
STL
-
BKK
45h 40m
2 stops
Multiple Airlines Logo
1:10 pm - 3:50 pm
BKK
-
STL
38h 40m
2 stops
$952Multiple Airlines
Sun, Apr 26 - Wed, May 6
Delta Logo
2:22 pm - 9:30 pm
STL
-
BKK
42h 08m
2 stops
Delta Logo
12:55 am - 11:21 pm
BKK
-
STL
35h 26m
2 stops
$970Delta
Wed, Feb 25 - Sat, Mar 7
Delta Logo
2:22 pm - 9:30 pm
STL
-
BKK
42h 08m
2 stops
Delta Logo
12:55 am - 11:21 pm
BKK
-
STL
35h 26m
2 stops
$971Delta
Wed, Feb 25 - Sat, Mar 7

Delta flights from St. Louis to Bangkok Suvarnabhumi Airport

Our best Delta deals on St. Louis to Bangkok Suvarnabhumi Airport flight tickets
Delta
Mar 2
STL6:35 amLambert-St Louis
29h 20m
2 stops
BKK12:55 amBangkok Suvarnabhumi
Mar 9
BKK9:30 pmBangkok Suvarnabhumi
38h 28m
2 stops
STL11:58 pmLambert-St Louis
$882
Delta
Feb 9
STL6:35 amLambert-St Louis
29h 20m
2 stops
BKK12:55 amBangkok Suvarnabhumi
Mar 23
BKK12:55 amBangkok Suvarnabhumi
35h 26m
2 stops
STL12:21 amLambert-St Louis
$931
Delta
Feb 8
STL5:56 pmLambert-St Louis
41h 59m
2 stops
BKK12:55 amBangkok Suvarnabhumi
Mar 23
BKK12:55 amBangkok Suvarnabhumi
35h 26m
2 stops
STL12:21 amLambert-St Louis
$937

United Airlines flights from St. Louis to Bangkok Suvarnabhumi Airport

Our best United Airlines deals on St. Louis to Bangkok Suvarnabhumi Airport flight tickets
United Airlines
Feb 9
STL8:45 amLambert-St Louis
37h 40m
3 stops
BKK11:25 amBangkok Suvarnabhumi
Feb 18
BKK4:55 pmBangkok Suvarnabhumi
30h 18m
3 stops
STL10:13 amLambert-St Louis
$903
United Airlines
Feb 9
STL9:57 amLambert-St Louis
36h 28m
3 stops
BKK11:25 amBangkok Suvarnabhumi
Mar 23
BKK4:55 pmBangkok Suvarnabhumi
39h 46m
3 stops
STL8:41 pmLambert-St Louis
$983
United Airlines
Feb 9
STL6:45 amLambert-St Louis
28h 35m
2 stops
BKK12:20 amBangkok Suvarnabhumi
Feb 18
BKK4:55 pmBangkok Suvarnabhumi
29h 28m
3 stops
STL9:23 amLambert-St Louis
$986

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to Bangkok Suvarnabhumi Airport 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 January 29, 2026.
Use the filters below to find and compare flights from St. Louis to Bangkok Suvarnabhumi Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Mon 3/2

6:35 am-12:55 am

2 stops29h 20m

Bangkok Suvarnabhumi

Mon 3/9

9:30 pm-11:58 pm

2 stops38h 28m

$882

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Mon 2/9

8:45 am-11:25 am

3 stops37h 40m

Bangkok Suvarnabhumi

Wed 2/18

4:55 pm-10:13 am

3 stops30h 18m

$903

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Thu 3/5

7:00 am-12:35 pm

2 stops40h 35m

Bangkok Suvarnabhumi

Thu 3/12

1:45 pm-11:59 pm

2 stops22h 14m

$910

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Sat 4/25

4:46 pm-12:00 pm

2 stops31h 14m

Bangkok Suvarnabhumi

Sun 5/3

1:10 pm-3:50 pm

2 stops38h 40m

$920

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Mon 2/9

6:35 am-12:55 am

2 stops29h 20m

Bangkok Suvarnabhumi

Mon 3/23

12:55 am-12:21 am

2 stops35h 26m

$931

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Sun 2/8

5:56 pm-12:55 am

2 stops41h 59m

Bangkok Suvarnabhumi

Mon 3/23

12:55 am-12:21 am

2 stops35h 26m

$937

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Wed 4/8

7:00 am-12:00 pm

2 stops41h 00m

Bangkok Suvarnabhumi

Tue 4/21

5:50 pm-3:50 pm

2 stops58h 00m

$948

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Sun 4/26

7:00 am-4:40 pm

2 stops45h 40m

Bangkok Suvarnabhumi

Wed 5/6

1:10 pm-3:50 pm

2 stops38h 40m

$952

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Wed 2/25

2:22 pm-9:30 pm

2 stops42h 08m

Bangkok Suvarnabhumi

Sat 3/7

12:55 am-11:21 pm

2 stops35h 26m

$970

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Wed 2/25

2:22 pm-9:30 pm

2 stops42h 08m

Bangkok Suvarnabhumi

Sat 3/7

12:55 am-11:21 pm

2 stops35h 26m

$971

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Bangkok from

How to get the cheapest flight ticket from St. Louis to Bangkok Suvarnabhumi Airport

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 Bangkok Suvarnabhumi Airport?

The month of January is, on average, the cheapest month to fly to Bangkok Suvarnabhumi Airport from St. Louis, with most prices found around $1,067. The month of September is another great option to travel to Bangkok Suvarnabhumi Airport, with average flight prices from St. Louis averaging around $1,097.

How far in advance should I book a flight to Bangkok Suvarnabhumi Airport?

You are more likely to see cheaper flights to Bangkok Suvarnabhumi Airport from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to Bangkok Suvarnabhumi Airport for around $1,294 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Bangkok Suvarnabhumi Airport from St. Louis for as low as $991 on momondo.

How have St. Louis to Bangkok Suvarnabhumi Airport flight prices changed over time?

As of January 2026, prices for St. Louis to Bangkok Suvarnabhumi Airport flights are approximately 8% more expensive when compared to flights at the same time last year.

When to book flights from St. Louis to Bangkok Suvarnabhumi Airport

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to Bangkok Suvarnabhumi Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap St. Louis to Bangkok Suvarnabhumi Airport (STL to BKK) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Bangkok Suvarnabhumi Airport

Fastest flight time

28h 36m

Direct flights

None
The fastest flight from St. Louis to Bangkok Suvarnabhumi Airport takes 28h 36m
There are no direct flights from St. Louis to Bangkok Suvarnabhumi Airport. There are no popular flight routes from St. Louis to Bangkok Suvarnabhumi Airport.
Search flight deals

  • How far is Lambert-St Louis to Bangkok Suvarnabhumi by plane?

    The straight-line distance from Lambert-St Louis to Bangkok Suvarnabhumi is 8747.1 mi. By plane, this route typically takes 28h 36m.

  • When did momondo last update prices for flights from Lambert-St Louis Airport to Bangkok Suvarnabhumi Airport?

    Prices for flights from Lambert-St Louis Airport to Bangkok Suvarnabhumi Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Lambert-St Louis Airport to Bangkok Suvarnabhumi Airport?

  • How old do you have to be to fly from Lambert-St Louis Airport to Bangkok Suvarnabhumi Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Lambert-St Louis Airport to Bangkok Suvarnabhumi Airport.

  • What documentation or ID do you need to fly to Bangkok Suvarnabhumi Airport?

    The travel and health documents required for your trip to Bangkok Suvarnabhumi Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Bangkok Suvarnabhumi Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular airline from St. Louis to Bangkok Suvarnabhumi Airport?

Best airlines flying from St. Louis to Bangkok Suvarnabhumi Airport

Compare and see reviews for airlines that fly from St. Louis to Bangkok Suvarnabhumi Airport with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $881Free CancellationRating
7.9
8,127 reviews
Search Delta flights
American AirlinesPriceFrom $954Free CancellationRating
7.2
11,206 reviews
Search American Airlines flights
Japan AirlinesPriceFrom $966Free CancellationRating
8.3
1,691 reviews
Search Japan Airlines flights
Cathay PacificPriceFrom $979Free CancellationRating
7.6
1,148 reviews
Search Cathay Pacific flights
United AirlinesPriceFrom $984Free CancellationRating
7.4
9,215 reviews
Search United Airlines flights
ANAPriceFrom $1,007Free CancellationRating
8.4
1,078 reviews
Search ANA flights
Qatar AirwaysPriceFrom $1,094Free CancellationRating
7.4
3,727 reviews
Search Qatar Airways flights
Air CanadaPriceFrom $1,280Free CancellationRating
7.1
10,667 reviews
Search Air Canada flights
FinnairPriceFrom $1,356Free CancellationRating
7.6
1,356 reviews
Search Finnair flights

Traveling to a place near Bangkok?

Book flights to Bangkok if you plan to visit one of these locations
Pattaya
Ko Samet
Kanchanaburi
Cha-am
Ko Lan
Ayutthaya
Chonburi
Pak Chong
Sattahip
Phetchaburi

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Bangkok?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Bangkok from St. Louis.

Can I find flights from St. Louis to Bangkok with flexible booking policies on momondo?

Flights from St. Louis to Bangkok with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from St. Louis to Bangkok?

momondo provides multiple filters to help you find the best flight to Bangkok from St. Louis. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from St. Louis to Bangkok right now. Can momondo alert me if prices change?

Yes. momondo can track prices for St. Louis to Bangkok flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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