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Cheap flights from St. Louis to Bangkok from $532

1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from St. Louis to Bangkok

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
4:06 pm - 12:05 pmSTL  Lambert-St Louis-BKK Bangkok Suvarnabhumi
30h 59m2 stops Seattle/Tacoma Intl Manila Ninoy Aquino Intl
Multiple Airlines Logo
1:10 pm - 3:08 pmBKK  Bangkok Suvarnabhumi-STL Lambert-St Louis
38h 58m2 stops Manila Ninoy Aquino Intl Seattle/Tacoma Intl
$1,039Multiple Airlines
Thu, Jan 28 - Wed, Feb 3
Qatar Airways Logo
11:07 am - 6:40 amSTL  Lambert-St Louis-BKK Bangkok Suvarnabhumi
30h 33m2 stops Chicago O'Hare Intl Doha Hamad Intl
Qatar Airways Logo
6:55 pm - 8:46 pmBKK  Bangkok Suvarnabhumi-STL Lambert-St Louis
38h 51m2 stops Doha Hamad Intl Chicago O'Hare Intl
$1,101Qatar Airways
Mon, Jan 18 - Mon, Feb 15
Qatar Airways Logo
10:25 am - 6:40 amSTL  Lambert-St Louis-BKK Bangkok Suvarnabhumi
31h 15m2 stops Chicago O'Hare Intl Doha Hamad Intl
Qatar Airways Logo
2:30 am - 7:33 pmBKK  Bangkok Suvarnabhumi-STL Lambert-St Louis
29h 03m2 stops Doha Hamad Intl Chicago O'Hare Intl
$1,104Qatar Airways
Sun, Feb 14 - Tue, Apr 13
Multiple Airlines Logo
7:21 am - 6:40 amSTL  Lambert-St Louis-BKK Bangkok Suvarnabhumi
34h 19m2 stops Chicago O'Hare Intl Doha Hamad Intl
Multiple Airlines Logo
2:00 am - 3:08 pmBKK  Bangkok Suvarnabhumi-STL Lambert-St Louis
50h 08m2 stops Doha Hamad Intl Seattle/Tacoma Intl
$1,132Multiple Airlines
Mon, Jan 18 - Tue, Jan 26
Delta Logo
6:29 am - 12:20 amSTL  Lambert-St Louis-BKK Bangkok Suvarnabhumi
28h 51m2 stops Minneapolis St Paul Incheon Intl
Delta Logo
9:40 pm - 9:40 pmBKK  Bangkok Suvarnabhumi-STL Lambert-St Louis
37h 00m2 stops Incheon Intl Atlanta Hartsfield-Jackson
$1,142Delta
Wed, Feb 17 - Wed, Feb 24
Korean Air Logo
9:00 am - 12:20 amSTL  Lambert-St Louis-BKK Bangkok Suvarnabhumi
27h 20m2 stops Atlanta Hartsfield-Jackson Incheon Intl
Korean Air Logo
1:05 am - 2:43 pmBKK  Bangkok Suvarnabhumi-STL Lambert-St Louis
25h 38m2 stops Incheon Intl Atlanta Hartsfield-Jackson
$1,148Korean Air
Thu, Mar 18 - Wed, Mar 24
Delta Logo
4:30 pm - 9:30 pmSTL  Lambert-St Louis-BKK Bangkok Suvarnabhumi
40h 00m2 stops Minneapolis St Paul Incheon Intl
Delta Logo
9:40 pm - 12:36 amBKK  Bangkok Suvarnabhumi-STL Lambert-St Louis
38h 56m2 stops Incheon Intl Salt Lake City
$1,182Delta
Sat, Mar 6 - Sun, Apr 25
Cathay Pacific Logo
6:01 am - 12:15 amSTL  Lambert-St Louis-BKK Bangkok Suvarnabhumi
29h 14m2 stops Los Angeles Hong Kong Intl
Cathay Pacific Logo
7:15 pm - 5:18 pmBKK  Bangkok Suvarnabhumi-STL Lambert-St Louis
35h 03m2 stops Hong Kong Intl Chicago O'Hare Intl
$1,186Cathay Pacific
Tue, Jan 12 - Tue, Jan 26
Cathay Pacific Logo
6:01 am - 12:15 amSTL  Lambert-St Louis-BKK Bangkok Suvarnabhumi
29h 14m2 stops Los Angeles Hong Kong Intl
Cathay Pacific Logo
7:15 pm - 5:18 pmBKK  Bangkok Suvarnabhumi-STL Lambert-St Louis
35h 03m2 stops Hong Kong Intl Chicago O'Hare Intl
$1,204Cathay Pacific
Tue, Jan 12 - Thu, Jan 28
Korean Air Logo
6:00 am - 1:25 pmSTL  Lambert-St Louis-BKK Bangkok Suvarnabhumi
42h 25m2 stops Atlanta Hartsfield-Jackson Incheon Intl
Korean Air Logo
9:40 pm - 1:28 pmBKK  Bangkok Suvarnabhumi-STL Lambert-St Louis
28h 48m2 stops Incheon Intl Atlanta Hartsfield-Jackson
$1,278Korean Air
Tue, Nov 24 - Wed, Dec 2

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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
Jan 19
STL10:45 amLambert-St Louis
35h 45m
3 stops
BKK11:30 amBangkok Suvarnabhumi
Feb 2
BKK9:10 amBangkok Suvarnabhumi
23h 18m
2 stops
STL7:28 pmLambert-St Louis
$1,258
United Airlines
Feb 10
STL10:45 amLambert-St Louis
35h 45m
3 stops
BKK11:30 amBangkok Suvarnabhumi
Feb 22
BKK7:10 amBangkok Suvarnabhumi
27h 47m
2 stops
STL9:57 pmLambert-St Louis
$1,260
United Airlines
Feb 10
STL10:45 amLambert-St Louis
35h 45m
3 stops
BKK11:30 amBangkok Suvarnabhumi
Feb 22
BKK4:55 pmBangkok Suvarnabhumi
33h 18m
3 stops
STL1:13 pmLambert-St Louis
$1,268

STARLUX Airlines flights from St. Louis to Bangkok Suvarnabhumi Airport

Our best STARLUX Airlines deals on St. Louis to Bangkok Suvarnabhumi Airport flight tickets
STARLUX Airlines
Nov 21
STL2:17 pmLambert-St Louis
33h 18m
2 stops
BKK12:35 pmBangkok Suvarnabhumi
Jan 4
BKK5:40 pmBangkok Suvarnabhumi
43h 12m
2 stops
STL11:52 pmLambert-St Louis
$2,304
STARLUX Airlines
Nov 21
STL2:17 pmLambert-St Louis
33h 18m
2 stops
BKK12:35 pmBangkok Suvarnabhumi
Jan 4
BKK5:40 pmBangkok Suvarnabhumi
43h 12m
2 stops
STL11:52 pmLambert-St Louis
$2,337

momondo Fare Finder

 
Use the filters below to find and compare flights from St. Louis to Bangkok Suvarnabhumi Airport that are best for you.

Fly from

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Route

Depart

Return

Price

Cheapest round-trip

St. LouisBangkok

STL Lambert-St Louis - BKK Bangkok Suvarnabhumi

STLBKK

Lambert-St Louis

Thu 1/28

4:06 pm-12:05 pm

2 stops30h 59m

Bangkok Suvarnabhumi

Wed 2/3

1:10 pm-3:08 pm

2 stops38h 58m

$1,039

St. LouisBangkok

STL Lambert-St Louis - BKK Bangkok Suvarnabhumi

STLBKK

Lambert-St Louis

Mon 1/18

11:07 am-6:40 am

2 stops30h 33m

Bangkok Suvarnabhumi

Mon 2/15

6:55 pm-8:46 pm

2 stops38h 51m

$1,101

St. LouisBangkok

STL Lambert-St Louis - BKK Bangkok Suvarnabhumi

STLBKK

Lambert-St Louis

Sun 2/14

10:25 am-6:40 am

2 stops31h 15m

Bangkok Suvarnabhumi

Tue 4/13

2:30 am-7:33 pm

2 stops29h 03m

$1,104

St. LouisBangkok

STL Lambert-St Louis - BKK Bangkok Suvarnabhumi

STLBKK

Lambert-St Louis

Mon 1/18

7:21 am-6:40 am

2 stops34h 19m

Bangkok Suvarnabhumi

Tue 1/26

2:00 am-3:08 pm

2 stops50h 08m

$1,132

St. LouisBangkok

STL Lambert-St Louis - BKK Bangkok Suvarnabhumi

STLBKK

Lambert-St Louis

Wed 2/17

6:29 am-12:20 am

2 stops28h 51m

Bangkok Suvarnabhumi

Wed 2/24

9:40 pm-9:40 pm

2 stops37h 00m

$1,142
Quickest round-trip

St. LouisBangkok

STL Lambert-St Louis - BKK Bangkok Suvarnabhumi

STLBKK

Lambert-St Louis

Thu 3/18

9:00 am-12:20 am

2 stops27h 20m

Bangkok Suvarnabhumi

Wed 3/24

1:05 am-2:43 pm

2 stops25h 38m

$1,148

St. LouisBangkok

STL Lambert-St Louis - BKK Bangkok Suvarnabhumi

STLBKK

Lambert-St Louis

Sat 3/6

4:30 pm-9:30 pm

2 stops40h 00m

Bangkok Suvarnabhumi

Sun 4/25

9:40 pm-12:36 am

2 stops38h 56m

$1,182

St. LouisBangkok

STL Lambert-St Louis - BKK Bangkok Suvarnabhumi

STLBKK

Lambert-St Louis

Tue 1/12

6:01 am-12:15 am

2 stops29h 14m

Bangkok Suvarnabhumi

Tue 1/26

7:15 pm-5:18 pm

2 stops35h 03m

$1,186

St. LouisBangkok

STL Lambert-St Louis - BKK Bangkok Suvarnabhumi

STLBKK

Lambert-St Louis

Tue 1/12

6:01 am-12:15 am

2 stops29h 14m

Bangkok Suvarnabhumi

Thu 1/28

7:15 pm-5:18 pm

2 stops35h 03m

$1,204

St. LouisBangkok

STL Lambert-St Louis - BKK Bangkok Suvarnabhumi

STLBKK

Lambert-St Louis

Tue 11/24

6:00 am-1:25 pm

2 stops42h 25m

Bangkok Suvarnabhumi

Wed 12/2

9:40 pm-1:28 pm

2 stops28h 48m

$1,278

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 typical price of a round-trip flight between St. Louis and Bangkok Suvarnabhumi Airport?

Prices are currently low for flights on this route.

Typical prices usually range from $1,218 to $1,428.
The lowest price recently found on this route was $1,039.

What is the cheapest month to fly to Bangkok Suvarnabhumi Airport?

The month of February is, on average, the cheapest month to fly to Bangkok Suvarnabhumi Airport from St. Louis, with most prices found around $1,024. The month of August is another great option to travel to Bangkok Suvarnabhumi Airport, with average flight prices from St. Louis averaging around $1,031.

How far in advance should I book a flight from St. Louis 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 $1,353 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 $1,009 on momondo.

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

As of November 2026, prices for St. Louis to Bangkok Suvarnabhumi Airport flights are approximately 0% cheaper 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

Best Price Found

$532

Fastest flight time

26h 00m

Direct flights

None
The best one-way flight to Bangkok Suvarnabhumi Airport from St. Louis in the past 72 hours is $532. The best round-trip flight deal from St. Louis to Bangkok Suvarnabhumi Airport found on momondo in the last 72 hours is $1,039.
The fastest flight from St. Louis to Bangkok Suvarnabhumi Airport takes 26h 00m
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

Frequently asked questions about flying from St. Louis to Bangkok Suvarnabhumi Airport

  • 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 26h 00m.

  • 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
Korean AirPriceFrom $793Free CancellationRating
8.4
1,218 reviews
Search Korean Air flights
DeltaPriceFrom $881Free CancellationRating
7.8
8,699 reviews
Search Delta flights
Qatar AirwaysPriceFrom $946Free CancellationRating
7.4
3,707 reviews
Search Qatar Airways flights
American AirlinesPriceFrom $948Free CancellationRating
7.0
12,227 reviews
Search American Airlines flights
Cathay PacificPriceFrom $974Free CancellationRating
7.6
1,542 reviews
Search Cathay Pacific flights
Japan AirlinesPriceFrom $976Free CancellationRating
8.3
1,971 reviews
Search Japan Airlines flights
United AirlinesPriceFrom $982Free CancellationRating
7.3
10,478 reviews
Search United Airlines flights
ANAPriceFrom $1,207Free CancellationRating
8.3
1,340 reviews
Search ANA flights

Traveling to a place near Bangkok?

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

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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