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Cheap flights from St. Louis to Bangkok from $550

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 10/26. 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.
Etihad Airways Logo
9:21 am - 11:50 pm
STL
-
BKK
26h 29m
2 stops
Etihad Airways Logo
8:30 am - 5:54 pm
BKK
-
STL
46h 24m
2 stops
$1,031Etihad Airways
Thu, Aug 20 - Wed, Nov 18
Multiple Airlines Logo
6:54 am - 11:50 pm
STL
-
BKK
28h 56m
2 stops
Multiple Airlines Logo
3:15 am - 8:03 pm
BKK
-
STL
28h 48m
2 stops
$1,039Multiple Airlines
Wed, Sep 2 - Fri, Sep 18
Etihad Airways Logo
8:34 am - 11:50 pm
STL
-
BKK
27h 16m
2 stops
Etihad Airways Logo
9:15 am - 5:34 pm
BKK
-
STL
44h 19m
2 stops
$1,041Etihad Airways
Wed, Aug 12 - Fri, Aug 21
Multiple Airlines Logo
7:44 am - 6:45 am
STL
-
BKK
35h 01m
2 stops
Multiple Airlines Logo
8:50 pm - 7:29 pm
BKK
-
STL
35h 39m
2 stops
$1,044Multiple Airlines
Thu, Oct 1 - Mon, Nov 16
Etihad Airways Logo
9:21 am - 11:50 pm
STL
-
BKK
26h 29m
2 stops
Etihad Airways Logo
9:15 am - 12:54 pm
BKK
-
STL
39h 39m
2 stops
$1,092Etihad Airways
Thu, Aug 13 - Sat, Aug 22
Etihad Airways Logo
8:05 pm - 6:45 am
STL
-
BKK
46h 40m
2 stops
Etihad Airways Logo
9:45 am - 3:30 pm
BKK
-
STL
41h 45m
2 stops
$1,098Etihad Airways
Sun, Oct 11 - Sat, Oct 24
Multiple Airlines Logo
7:31 am - 11:50 pm
STL
-
BKK
28h 19m
2 stops
Multiple Airlines Logo
8:45 pm - 1:52 pm
BKK
-
STL
29h 07m
2 stops
$1,099Multiple Airlines
Thu, Jul 16 - Wed, Jul 22
Etihad Airways Logo
8:06 pm - 6:45 am
STL
-
BKK
46h 39m
2 stops
Etihad Airways Logo
3:15 am - 9:10 am
BKK
-
STL
41h 55m
2 stops
$1,106Etihad Airways
Sat, Jul 11 - Fri, Jul 17
Etihad Airways Logo
4:32 pm - 6:15 am
STL
-
BKK
25h 43m
2 stops
Etihad Airways Logo
8:50 pm - 7:27 pm
BKK
-
STL
35h 37m
2 stops
$1,174Etihad Airways
Sat, Oct 10 - Tue, Nov 10
Multiple Airlines Logo
3:20 pm - 11:50 am
STL
-
BKK
32h 30m
2 stops
Multiple Airlines Logo
8:45 pm - 2:50 pm
BKK
-
STL
30h 05m
2 stops
$1,175Multiple Airlines
Thu, Jul 9 - Thu, Jul 23

Qatar Airways flights from St. Louis to Bangkok

Our best Qatar Airways deals on St. Louis to Bangkok flight tickets
Qatar Airways
Aug 25
STL9:31 amLambert-St Louis
33h 44m
2 stops
BKK7:15 amBangkok Suvarnabhumi
Dec 14
BKK3:00 amBangkok Suvarnabhumi
33h 59m
2 stops
STL11:59 pmLambert-St Louis
$1,195
Qatar Airways
Oct 19
STL7:00 amLambert-St Louis
35h 20m
2 stops
BKK6:20 amBangkok Suvarnabhumi
Dec 21
BKK8:30 pmBangkok Suvarnabhumi
36h 01m
2 stops
STL7:31 pmLambert-St Louis
$1,200
Qatar Airways
Nov 12
STL7:00 amLambert-St Louis
34h 40m
2 stops
BKK6:40 amBangkok Suvarnabhumi
Dec 14
BKK3:00 amBangkok Suvarnabhumi
33h 59m
2 stops
STL11:59 pmLambert-St Louis
$1,208

Etihad Airways flights from St. Louis to Bangkok

Our best Etihad Airways deals on St. Louis to Bangkok flight tickets
Etihad Airways
Aug 20
STL9:21 amLambert-St Louis
26h 29m
2 stops
BKK11:50 pmBangkok Suvarnabhumi
Nov 18
BKK8:30 amBangkok Suvarnabhumi
46h 24m
2 stops
STL5:54 pmLambert-St Louis
$1,031
Etihad Airways
Aug 13
STL9:21 amLambert-St Louis
26h 29m
2 stops
BKK11:50 pmBangkok Suvarnabhumi
Aug 22
BKK9:15 amBangkok Suvarnabhumi
39h 39m
2 stops
STL12:54 pmLambert-St Louis
$1,092
Etihad Airways
Oct 11
STL8:05 pmLambert-St Louis
46h 40m
2 stops
BKK6:45 amBangkok Suvarnabhumi
Oct 24
BKK9:45 amBangkok Suvarnabhumi
41h 45m
2 stops
STL3:30 pmLambert-St Louis
$1,098

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to Bangkok 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 May 18, 2026.
Use the filters below to find and compare flights from St. Louis to Bangkok that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Thu 8/20

9:21 am-11:50 pm

2 stops26h 29m

Bangkok Suvarnabhumi

Wed 11/18

8:30 am-5:54 pm

2 stops46h 24m

$1,031

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Wed 9/2

6:54 am-11:50 pm

2 stops28h 56m

Bangkok Suvarnabhumi

Fri 9/18

3:15 am-8:03 pm

2 stops28h 48m

$1,039

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Wed 8/12

8:34 am-11:50 pm

2 stops27h 16m

Bangkok Suvarnabhumi

Fri 8/21

9:15 am-5:34 pm

2 stops44h 19m

$1,041

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Thu 10/1

7:44 am-6:45 am

2 stops35h 01m

Bangkok Suvarnabhumi

Mon 11/16

8:50 pm-7:29 pm

2 stops35h 39m

$1,044

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Thu 8/13

9:21 am-11:50 pm

2 stops26h 29m

Bangkok Suvarnabhumi

Sat 8/22

9:15 am-12:54 pm

2 stops39h 39m

$1,092

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Sun 10/11

8:05 pm-6:45 am

2 stops46h 40m

Bangkok Suvarnabhumi

Sat 10/24

9:45 am-3:30 pm

2 stops41h 45m

$1,098
Quickest round-trip

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Thu 7/16

7:31 am-11:50 pm

2 stops28h 19m

Bangkok Suvarnabhumi

Wed 7/22

8:45 pm-1:52 pm

2 stops29h 07m

$1,099

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Sat 7/11

8:06 pm-6:45 am

2 stops46h 39m

Bangkok Suvarnabhumi

Fri 7/17

3:15 am-9:10 am

2 stops41h 55m

$1,106

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Sat 10/10

4:32 pm-6:15 am

2 stops25h 43m

Bangkok Suvarnabhumi

Tue 11/10

8:50 pm-7:27 pm

2 stops35h 37m

$1,174

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Thu 7/9

3:20 pm-11:50 am

2 stops32h 30m

Bangkok Suvarnabhumi

Thu 7/23

8:45 pm-2:50 pm

2 stops30h 05m

$1,175

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

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?

What is the cheapest month to fly to Bangkok?

If you aren’t able to travel during the month of February, then book flights to Bangkok from St. Louis during December instead. Flights to Bangkok in December, while not as cheap as those in February, still average around $825.

How far in advance should I book a flight from St. Louis to Bangkok?

You are more likely to see cheaper flights to Bangkok from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to Bangkok for around $1,278 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Bangkok from St. Louis for as low as $1,036 on momondo.

Cheap St. Louis to Bangkok flight deals and tips

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

Fastest flight time

25h 28m

Direct flights

None
The fastest flight from St. Louis to Bangkok takes 25h 28m
There are no direct flights from St. Louis to Bangkok. There are no popular flight routes from St. Louis to Bangkok.
Search flight deals

Frequently asked questions about flying from St. Louis to Bangkok

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

    A flight from Lambert-St Louis to Bangkok will travel around 8745.3 mi. Typically, this will take 25h 28m by plane in normal conditions.

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

    Prices for flights from Lambert-St Louis Airport to Bangkok are updated daily.

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

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Lambert-St Louis Airport to Bangkok.

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

    The travel and health documents you'll need for your trip to Bangkok may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Bangkok. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from St. Louis to Bangkok

Compare and see reviews for airlines that fly from St. Louis to Bangkok with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $881Free CancellationRating
7.9
8,449 reviews
Search Delta flights
Japan AirlinesPriceFrom $929Free CancellationRating
8.3
1,825 reviews
Search Japan Airlines flights
American AirlinesPriceFrom $954Free CancellationRating
7.1
11,650 reviews
Search American Airlines flights
Cathay PacificPriceFrom $974Free CancellationRating
7.6
1,332 reviews
Search Cathay Pacific flights
United AirlinesPriceFrom $983Free CancellationRating
7.4
9,737 reviews
Search United Airlines flights
ANAPriceFrom $1,007Free CancellationRating
8.3
1,210 reviews
Search ANA flights
Qatar AirwaysPriceFrom $1,094Free CancellationRating
7.4
3,726 reviews
Search Qatar Airways flights

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?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Bangkok from St. Louis.

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

Of course. momondo tracks the price of St. Louis to Bangkok flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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Find better results for your trip to Thailand

Fly into one of these airports located in Bangkok

Airports listed have a maximum distance of 15.4 mi from Bangkok
Bangkok Suvarnabhumi Airport
Bangkok Don Mueang Intl Airport