Latest deals
Insights
FAQs
Reviews
Price Alerts

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
6:54 am - 6:45 am
STL
-
BKK
35h 51m
2 stops
Etihad Airways Logo
2:55 am - 1:17 pm
BKK
-
STL
47h 22m
2 stops
$1,026Etihad Airways
Thu, Aug 20 - Tue, Nov 17
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
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
Multiple Airlines Logo
7:16 am - 11:55 pm
STL
-
BKK
28h 39m
2 stops
Multiple Airlines Logo
3:15 am - 11:58 pm
BKK
-
STL
32h 43m
2 stops
$1,037Multiple Airlines
Sun, Oct 11 - Fri, Oct 23
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
Etihad Airways Logo
5:00 am - 6:45 am
STL
-
BKK
37h 45m
2 stops
Etihad Airways Logo
3:15 am - 9:08 pm
BKK
-
STL
29h 53m
2 stops
$1,048Etihad Airways
Wed, Oct 7 - Tue, Oct 13
Multiple Airlines Logo
7:04 pm - 2:50 pm
STL
-
BKK
30h 46m
2 stops
Multiple Airlines Logo
12:15 pm - 11:25 pm
BKK
-
STL
48h 10m
2 stops
$1,073Multiple Airlines
Wed, Jan 6 - Wed, Feb 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
$1,091Air Canada
Wed, Aug 19 - Fri, Sep 4
Etihad Airways Logo
9:27 am - 11:55 pm
STL
-
BKK
26h 28m
2 stops
Etihad Airways Logo
9:00 pm - 12:35 pm
BKK
-
STL
27h 35m
2 stops
$1,094Etihad Airways
Fri, Oct 9 - Thu, Oct 22

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

Etihad Airways flights from St. Louis to Bangkok

Our best Etihad Airways deals on St. Louis to Bangkok 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
37h 45m
2 stops
BKK6:45 amBangkok Suvarnabhumi
Oct 13
BKK3:15 amBangkok Suvarnabhumi
29h 53m
2 stops
STL9:08 pmLambert-St Louis
$1,048

Air Canada flights from St. Louis to Bangkok

Our best Air Canada deals on St. Louis to Bangkok 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
Sep 4
BKK7:45 amBangkok Suvarnabhumi
46h 57m
2 stops
STL6:42 pmLambert-St Louis
$1,091
Air Canada
Jul 20
STL12:10 pmLambert-St Louis
45h 45m
2 stops
BKK9:55 pmBangkok Suvarnabhumi
Aug 19
BKK7:45 amBangkok Suvarnabhumi
46h 57m
2 stops
STL6:42 pmLambert-St Louis
$1,346

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 July 13, 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

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

6:54 am-6:45 am

2 stops35h 51m

Bangkok Suvarnabhumi

Tue 11/17

2:55 am-1:17 pm

2 stops47h 22m

$1,026

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

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

Sun 10/11

7:16 am-11:55 pm

2 stops28h 39m

Bangkok Suvarnabhumi

Fri 10/23

3:15 am-11:58 pm

2 stops32h 43m

$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

Wed 10/7

5:00 am-6:45 am

2 stops37h 45m

Bangkok Suvarnabhumi

Tue 10/13

3:15 am-9:08 pm

2 stops29h 53m

$1,048

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Wed 1/6

7:04 pm-2:50 pm

2 stops30h 46m

Bangkok Suvarnabhumi

Wed 2/17

12:15 pm-11:25 pm

2 stops48h 10m

$1,073

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Wed 8/19

12:10 pm-5:05 am

2 stops28h 55m

Bangkok Suvarnabhumi

Fri 9/4

7:45 am-6:42 pm

2 stops46h 57m

$1,091
Quickest round-trip

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Fri 10/9

9:27 am-11:55 pm

2 stops26h 28m

Bangkok Suvarnabhumi

Thu 10/22

9:00 pm-12:35 pm

2 stops27h 35m

$1,094

Flights are sorted by cheapest round-trip flights first.

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

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 August instead. Flights to Bangkok in August, while not as cheap as those in February, still average around $853.

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 $1,289 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 $1,013 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 08m

Direct flights

None
The fastest flight from St. Louis to Bangkok takes 25h 08m
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 08m 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
7.8
8,467 reviews
Search Delta flights
Japan AirlinesPriceFrom $929Free CancellationRating
8.3
1,871 reviews
Search Japan Airlines flights
Qatar AirwaysPriceFrom $946Free CancellationRating
7.3
3,743 reviews
Search Qatar Airways flights
American AirlinesPriceFrom $954Free CancellationRating
7.1
11,810 reviews
Search American Airlines flights
Cathay PacificPriceFrom $974Free CancellationRating
7.6
1,410 reviews
Search Cathay Pacific flights
United AirlinesPriceFrom $982Free CancellationRating
7.4
9,987 reviews
Search United Airlines flights
ANAPriceFrom $1,007Free CancellationRating
8.3
1,271 reviews
Search ANA flights
EVA AirPriceFrom $1,048Free CancellationRating
8.5
1,500 reviews
Search EVA Air 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.

An easier way to manage your Bangkok 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
Wed 8/12
Wed 8/19
By creating a price alert you accept our terms of use and privacy policy.

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