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Cheap flights from St. Louis to Bangkok from $505

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 9/13. 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
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
6:54 pm - 1:45 pm
STL
-
BKK
30h 51m
2 stops
Multiple Airlines Logo
12:25 pm - 10:00 pm
BKK
-
STL
45h 35m
2 stops
$998Multiple Airlines
Mon, Sep 7 - Mon, Sep 21
Etihad Airways Logo
10:22 am - 6:45 am
STL
-
BKK
32h 23m
2 stops
Etihad Airways Logo
8:30 am - 5:54 pm
BKK
-
STL
46h 24m
2 stops
$1,027Etihad Airways
Thu, Aug 20 - Wed, Nov 18
Etihad Airways Logo
5:00 am - 11:55 pm
STL
-
BKK
30h 55m
2 stops
Etihad Airways Logo
9:00 pm - 12:35 pm
BKK
-
STL
27h 35m
2 stops
$1,029Etihad Airways
Wed, Oct 7 - Wed, Oct 14
Etihad Airways Logo
10:22 am - 6:45 am
STL
-
BKK
32h 23m
2 stops
Etihad Airways Logo
8:30 am - 5:54 pm
BKK
-
STL
46h 24m
2 stops
$1,030Etihad Airways
Thu, Aug 20 - Wed, Nov 18
Multiple Airlines Logo
7:04 pm - 2:50 pm
STL
-
BKK
30h 46m
2 stops
Multiple Airlines Logo
12:15 pm - 1:45 pm
BKK
-
STL
38h 30m
2 stops
$1,033Multiple Airlines
Tue, Nov 3 - Tue, Nov 17
Air Canada Logo
12:10 pm - 5:05 am
STL
-
BKK
28h 55m
2 stops
Air Canada Logo
7:45 am - 6:42 pm
BKK
-
STL
46h 57m
2 stops
$1,035Air Canada
Wed, Aug 19 - Wed, Aug 26
Air Canada Logo
12:10 pm - 5:05 am
STL
-
BKK
28h 55m
2 stops
Air Canada Logo
7:45 am - 6:42 pm
BKK
-
STL
46h 57m
2 stops
$1,036Air Canada
Wed, Aug 19 - Wed, Aug 26
Multiple Airlines Logo
5:21 pm - 6:35 am
STL
-
BKK
25h 14m
2 stops
Multiple Airlines Logo
8:50 pm - 9:08 pm
BKK
-
STL
37h 18m
2 stops
$1,037Multiple Airlines
Sat, Oct 10 - Tue, Nov 10
Multiple Airlines Logo
6:54 am - 11:55 pm
STL
-
BKK
29h 01m
2 stops
Multiple Airlines Logo
3:15 am - 12:27 am
BKK
-
STL
33h 12m
2 stops
$1,038Multiple Airlines
Wed, Sep 2 - Fri, Sep 18
Multiple Airlines Logo
5:00 am - 11:55 pm
STL
-
BKK
30h 55m
2 stops
Multiple Airlines Logo
3:15 am - 9:08 pm
BKK
-
STL
29h 53m
2 stops
$1,095Multiple Airlines
Fri, Oct 9 - Wed, Oct 21

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Etihad Airways flights from St. Louis to Bangkok Suvarnabhumi Airport

Our best Etihad Airways deals on St. Louis to Bangkok Suvarnabhumi Airport flight tickets
Etihad Airways
Aug 20
STL6:54 amLambert-St Louis
35h 51m
2 stops
BKK6:45 amBangkok Suvarnabhumi
Nov 17
BKK2:55 amBangkok Suvarnabhumi
47h 22m
2 stops
STL1:17 pmLambert-St Louis
$1,026
Etihad Airways
Aug 20
STL10:22 amLambert-St Louis
32h 23m
2 stops
BKK6:45 amBangkok Suvarnabhumi
Nov 18
BKK8:30 amBangkok Suvarnabhumi
46h 24m
2 stops
STL5:54 pmLambert-St Louis
$1,027
Etihad Airways
Oct 7
STL5:00 amLambert-St Louis
30h 55m
2 stops
BKK11:55 pmBangkok Suvarnabhumi
Oct 14
BKK9:00 pmBangkok Suvarnabhumi
27h 35m
2 stops
STL12:35 pmLambert-St Louis
$1,029

Air Canada flights from St. Louis to Bangkok Suvarnabhumi Airport

Our best Air Canada deals on St. Louis to Bangkok Suvarnabhumi Airport flight tickets
Air Canada
Aug 19
STL12:10 pmLambert-St Louis
28h 55m
2 stops
BKK5:05 amBangkok Suvarnabhumi
Aug 26
BKK7:45 amBangkok Suvarnabhumi
46h 57m
2 stops
STL6:42 pmLambert-St Louis
$1,035
Air Canada
Aug 19
STL12:10 pmLambert-St Louis
28h 55m
2 stops
BKK5:05 amBangkok Suvarnabhumi
Aug 26
BKK7:45 amBangkok Suvarnabhumi
46h 57m
2 stops
STL6:42 pmLambert-St Louis
$1,036
Air Canada
Aug 5
STL12:10 pmLambert-St Louis
28h 55m
2 stops
BKK5:05 amBangkok Suvarnabhumi
Aug 17
BKK7:45 amBangkok Suvarnabhumi
46h 57m
2 stops
STL6:42 pmLambert-St Louis
$1,334

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 July 10, 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

Cheapest round-trip

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Mon 9/7

6:54 pm-1:45 pm

2 stops30h 51m

Bangkok Suvarnabhumi

Mon 9/21

12:25 pm-10:00 pm

2 stops45h 35m

$998

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Thu 8/20

10:22 am-6:45 am

2 stops32h 23m

Bangkok Suvarnabhumi

Wed 11/18

8:30 am-5:54 pm

2 stops46h 24m

$1,027
Quickest round-trip

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Wed 10/7

5:00 am-11:55 pm

2 stops30h 55m

Bangkok Suvarnabhumi

Wed 10/14

9:00 pm-12:35 pm

2 stops27h 35m

$1,029

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Thu 8/20

10:22 am-6:45 am

2 stops32h 23m

Bangkok Suvarnabhumi

Wed 11/18

8:30 am-5:54 pm

2 stops46h 24m

$1,030

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Tue 11/3

7:04 pm-2:50 pm

2 stops30h 46m

Bangkok Suvarnabhumi

Tue 11/17

12:15 pm-1:45 pm

2 stops38h 30m

$1,033

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Wed 8/19

12:10 pm-5:05 am

2 stops28h 55m

Bangkok Suvarnabhumi

Wed 8/26

7:45 am-6:42 pm

2 stops46h 57m

$1,035

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Wed 8/19

12:10 pm-5:05 am

2 stops28h 55m

Bangkok Suvarnabhumi

Wed 8/26

7:45 am-6:42 pm

2 stops46h 57m

$1,036

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Sat 10/10

5:21 pm-6:35 am

2 stops25h 14m

Bangkok Suvarnabhumi

Tue 11/10

8:50 pm-9:08 pm

2 stops37h 18m

$1,037

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Wed 9/2

6:54 am-11:55 pm

2 stops29h 01m

Bangkok Suvarnabhumi

Fri 9/18

3:15 am-12:27 am

2 stops33h 12m

$1,038

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Fri 10/9

5:00 am-11:55 pm

2 stops30h 55m

Bangkok Suvarnabhumi

Wed 10/21

3:15 am-9:08 pm

2 stops29h 53m

$1,095

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?

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

The month of August is, on average, the cheapest month to fly to Bangkok Suvarnabhumi Airport from St. Louis, with most prices found around $979. The month of February is another great option to travel to Bangkok Suvarnabhumi Airport, with average flight prices from St. Louis averaging around $1,023.

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 $1,283 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 $1,014 on momondo.

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

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

25h 33m

Direct flights

None
The fastest flight from St. Louis to Bangkok Suvarnabhumi Airport takes 25h 33m
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 25h 33m.

  • 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
7.8
8,456 reviews
Search Delta flights
Japan AirlinesPriceFrom $929Free CancellationRating
8.3
1,868 reviews
Search Japan Airlines flights
Qatar AirwaysPriceFrom $946Free CancellationRating
7.3
3,743 reviews
Search Qatar Airways flights
American AirlinesPriceFrom $954Free CancellationRating
7.1
11,799 reviews
Search American Airlines flights
Cathay PacificPriceFrom $974Free CancellationRating
7.6
1,403 reviews
Search Cathay Pacific flights
United AirlinesPriceFrom $982Free CancellationRating
7.4
9,966 reviews
Search United Airlines flights
ANAPriceFrom $1,007Free CancellationRating
8.3
1,271 reviews
Search ANA flights
EVA AirPriceFrom $1,048Free CancellationRating
8.5
1,497 reviews
Search EVA Air 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
Chonburi
Ko Lan
Sattahip
Ayutthaya
Pak Chong
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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