$585+ Cheap flights from St. Louis (STL) to Bangkok
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/1. Fares are subject to change and may not be available on all flights or dates of travel.
STL — BKK
Aug 1 — Aug 81
Round-trip
1 adult, Economy
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Find cheap flights from St. Louis to Bangkok with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from St. Louis to Bangkok
Cheapest
Best
Last-minute
One-way
Cheapest flights from St. Louis to BangkokExplore the most affordable flight options available from St. Louis to Bangkok. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 2, 2026.
Explore the most affordable flight options available from St. Louis to Bangkok. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 2, 2026.
This oojo deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/206:54 am
STL
- BKK
2 stops29h 01m
Etihad Airways
Wed 11/188:30 am
BKK
- STL
2 stops41h 47m
Etihad Airways
Deal found 6/29![Etihad Airways logo]()
$1,029
This Etihad Airways deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/29:32 am
STL
- BKK
2 stops26h 23m
Multiple Airlines
Sat 9/199:00 pm
BKK
- STL
2 stops35h 44m
Multiple Airlines
Deal found 6/29![Multiple Airlines logo]()
$1,037
This oojo deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/178:34 am
STL
- BKK
2 stops27h 21m
Etihad Airways
Mon 8/313:55 pm
BKK
- STL
2 stops32h 59m
Etihad Airways
Deal found 6/28![Etihad Airways logo]()
$1,088
This oojo deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/86:54 am
STL
- BKK
2 stops29h 01m
Etihad Airways
Wed 8/193:55 pm
BKK
- STL
2 stops32h 59m
Etihad Airways
Deal found 6/28![Etihad Airways logo]()
$1,089
This Etihad Airways deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/97:16 am
STL
- BKK
2 stops28h 39m
Multiple Airlines
Wed 10/213:15 am
BKK
- STL
2 stops29h 53m
Multiple Airlines
Deal found 6/29![Multiple Airlines logo]()
$1,094
This Etihad Airways deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1210:22 am
STL
- BKK
2 stops25h 33m
Multiple Airlines
Wed 8/193:55 pm
BKK
- STL
2 stops32h 59m
Multiple Airlines
Deal found 6/28![Multiple Airlines logo]()
$1,096
This Etihad Airways deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/13:23 pm
STL
- BKK
2 stops26h 12m
Multiple Airlines
Sun 11/82:40 pm
BKK
- STL
2 stops37h 13m
Multiple Airlines
Deal found 6/28![Multiple Airlines logo]()
$1,097
This Etihad Airways deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2811:31 am
STL
- BKK
2 stops31h 04m
Multiple Airlines
Fri 11/272:40 pm
BKK
- STL
2 stops40h 14m
Multiple Airlines
Deal found 7/1![Multiple Airlines logo]()
$1,098
Best flights from St. Louis to BangkokDiscover carefully curated flight deals from St. Louis to Bangkok that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 2, 2026.
Discover carefully curated flight deals from St. Louis to Bangkok that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 2, 2026.
This Etihad Airways deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2811:31 am
STL
- BKK
2 stops31h 04m
Multiple Airlines
Wed 11/112:40 pm
BKK
- STL
2 stops39h 03m
Multiple Airlines
Deal found 6/29![Multiple Airlines logo]()
$1,037
This Qatar Airways deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/176:29 am
STL
- BKK
2 stops35h 51m
Qatar Airways
Thu 10/13:00 am
BKK
- STL
2 stops32h 59m
Qatar Airways
Deal found 6/30![Qatar Airways logo]()
$1,266
This Delta deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/126:20 am
STL
- BKK
2 stops30h 45m
Delta
Thu 8/202:35 am
BKK
- STL
2 stops33h 23m
Delta
Deal found 6/28![Delta logo]()
$1,355
This United Airlines deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/281:08 pm
STL
- BKK
3 stops34h 22m
United Airlines
Wed 11/119:10 am
BKK
- STL
2 stops38h 31m
United Airlines
Deal found 6/29![United Airlines logo]()
$1,366
This Etihad Airways deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/117:16 am
STL
- BKK
2 stops28h 39m
Multiple Airlines
Fri 10/233:15 am
BKK
- STL
2 stops32h 43m
Multiple Airlines
Deal found 6/28![Multiple Airlines logo]()
$1,037
This Etihad Airways deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/156:00 am
STL
- BKK
2 stops29h 55m
Multiple Airlines
Fri 9/183:15 am
BKK
- STL
2 stops29h 29m
Multiple Airlines
Deal found 6/28![Multiple Airlines logo]()
$1,037
This United Airlines deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/161:36 pm
STL
- BKK
3 stops31h 59m
United Airlines
Sun 10/257:10 am
BKK
- STL
2 stops26h 03m
United Airlines
Deal found 7/1![United Airlines logo]()
$1,368
This United Airlines deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/119:00 am
STL
- BKK
3 stops36h 35m
United Airlines
Sat 10/243:45 pm
BKK
- STL
3 stops29h 03m
United Airlines
Deal found 6/29![United Airlines logo]()
$1,376
This China Airlines deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/87:56 pm
STL
- BKK
2 stops25h 49m
Multiple Airlines
Wed 8/1910:50 am
BKK
- STL
2 stops23h 45m
Multiple Airlines
Deal found 7/2![Multiple Airlines logo]()
$1,349
Last-minute flights from St. Louis to BangkokDiscover last-minute flight deals from St. Louis to Bangkok. Data last updated July 2, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Bangkok. Data last updated July 2, 2026 and is based on user searches.
This oojo deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/18:06 pm
STL
- BKK
2 stops52h 04m
Etihad Airways
Mon 8/173:55 pm
BKK
- STL
2 stops36h 55m
Etihad Airways
Deal found 6/28![Etihad Airways logo]()
$1,094
This Etihad Airways deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/17:02 am
STL
- BKK
2 stops41h 08m
Multiple Airlines
Mon 8/173:55 pm
BKK
- STL
2 stops36h 55m
Multiple Airlines
Deal found 6/28![Multiple Airlines logo]()
$1,151
This oojo deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/86:54 am
STL
- BKK
2 stops29h 01m
Etihad Airways
Wed 8/193:55 pm
BKK
- STL
2 stops32h 59m
Etihad Airways
Deal found 6/28![Etihad Airways logo]()
$1,089
This Etihad Airways deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1210:22 am
STL
- BKK
2 stops25h 33m
Multiple Airlines
Wed 8/193:55 pm
BKK
- STL
2 stops32h 59m
Multiple Airlines
Deal found 6/28![Multiple Airlines logo]()
$1,096
This oojo deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/178:34 am
STL
- BKK
2 stops27h 21m
Etihad Airways
Mon 8/313:55 pm
BKK
- STL
2 stops32h 59m
Etihad Airways
Deal found 6/28![Etihad Airways logo]()
$1,088
This Trip.com deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/178:08 pm
STL
- BKK
3 stops40h 32m
Multiple Airlines
Fri 8/213:15 am
BKK
- STL
3 stops51h 58m
Multiple Airlines
Deal found 7/2![Multiple Airlines logo]()
$1,124
This Justfly.com deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/176:02 am
STL
- BKK
2 stops37h 33m
Qatar Airways
Wed 9/23:00 am
BKK
- STL
2 stops33h 14m
Qatar Airways
Deal found 6/28![Qatar Airways logo]()
$1,199
This Etihad Airways deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/198:34 am
STL
- BKK
2 stops27h 21m
Multiple Airlines
Wed 8/263:55 pm
BKK
- STL
2 stops36h 28m
Multiple Airlines
Deal found 6/29![Multiple Airlines logo]()
$1,037
This oojo deal was found by Cheapflights users on 6/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/209:44 am
STL
- BKK
2 stops26h 11m
Etihad Airways
Wed 11/188:50 pm
BKK
- STL
2 stops29h 27m
Etihad Airways
Deal found 6/27![Etihad Airways logo]()
$1,029
This Etihad Airways deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/288:34 am
STL
- BKK
2 stops27h 21m
Multiple Airlines
Fri 9/253:15 am
BKK
- STL
2 stops33h 12m
Multiple Airlines
Deal found 7/1![Multiple Airlines logo]()
$1,038
One-way flights from St. Louis to BangkokSearch for one-way flight options from St. Louis to Bangkok. Find affordable one-way fares based on user searches. Data last updated July 2, 2026.
Search for one-way flight options from St. Louis to Bangkok. Find affordable one-way fares based on user searches. Data last updated July 2, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/18:08 pm
STL
- BKK
3 stops50h 32m
Multiple Airlines
Deal found 6/29![Multiple Airlines logo]()
$585
This Kiwi.com deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/38:08 pm
STL
- BKK
3 stops50h 32m
Multiple Airlines
Deal found 7/2![Multiple Airlines logo]()
$603
This oojo deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/126:02 am
STL
- BKK
2 stops29h 33m
Multiple Airlines
Deal found 7/1![Multiple Airlines logo]()
$627
This oojo deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/226:02 am
STL
- BKK
2 stops29h 33m
Multiple Airlines
Deal found 7/1![Multiple Airlines logo]()
$642
This oojo deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/222:32 pm
STL
- BKK
2 stops34h 23m
Qatar Airways
Deal found 6/28![Qatar Airways logo]()
$649
This oojo deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/18:06 pm
STL
- BKK
2 stops52h 04m
Etihad Airways
Deal found 6/29![Etihad Airways logo]()
$670
This FlightHub deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/2212:10 pm
STL
- BKK
2 stops28h 55m
Air Canada
Deal found 6/30![Air Canada logo]()
$672
This oojo deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/281:25 pm
STL
- BKK
2 stops29h 50m
Qatar Airways
Deal found 6/28![Qatar Airways logo]()
$722
This United Airlines deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/221:13 pm
STL
- BKK
3 stops32h 22m
United Airlines
Deal found 7/1![United Airlines logo]()
$764
This United Airlines deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1212:59 pm
STL
- BKK
3 stops32h 36m
United Airlines
Deal found 7/1![United Airlines logo]()
$863
This BusinessClass deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/16:37 am
STL
- BKK
2 stops59h 08m
Japan Airlines
Deal found 6/29![Japan Airlines logo]()
$1,168
This Ovago deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/35:10 am
STL
- BKK
1 stop35h 55m
ANA
Deal found 7/2![ANA logo]()
$1,539
Find flight deals from St. Louis to Bangkok
Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Bangkok (TH1). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated July 2, 2026.
Round-trip from | $1,029 (oojo) |
|---|---|
One-way from | $585 (Kiwi.com) |
Popular in | December |
Cheapest in | August |
Average price | $1,391 |
Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated July 2, 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
Cheapest round-trip
St. LouisBangkok
STL - BKK
STLBKK
Lambert-St Louis
Wed 10/28
11:31 am-6:35 am
2 stops31h 04m
Bangkok Suvarnabhumi
Wed 11/11
2:40 pm-4:43 pm
2 stops39h 03m
$1,037
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
Tue 9/15
6:00 am-11:55 pm
2 stops29h 55m
Bangkok Suvarnabhumi
Fri 9/18
3:15 am-8:44 pm
2 stops29h 29m
$1,037
St. LouisBangkok
STL - BKK
STLBKK
Lambert-St Louis
Thu 9/17
6:29 am-6:20 am
2 stops35h 51m
Bangkok Suvarnabhumi
Thu 10/1
3:00 am-11:59 pm
2 stops32h 59m
$1,266
Quickest round-trip
St. LouisBangkok
STL - BKK
STLBKK
Lambert-St Louis
Sat 8/8
7:56 pm-9:45 am
2 stops25h 49m
Bangkok Suvarnabhumi
Wed 8/19
10:50 am-10:35 pm
2 stops23h 45m
$1,349
St. LouisBangkok
STL - BKK
STLBKK
Lambert-St Louis
Wed 8/12
6:20 am-1:05 am
2 stops30h 45m
Bangkok Suvarnabhumi
Thu 8/20
2:35 am-11:58 pm
2 stops33h 23m
$1,355
St. LouisBangkok
STL - BKK
STLBKK
Lambert-St Louis
Wed 10/28
1:08 pm-11:30 am
3 stops34h 22m
Bangkok Suvarnabhumi
Wed 11/11
9:10 am-10:41 am
2 stops38h 31m
$1,366
St. LouisBangkok
STL - BKK
STLBKK
Lambert-St Louis
Fri 10/16
1:36 pm-9:35 am
3 stops31h 59m
Bangkok Suvarnabhumi
Sun 10/25
7:10 am-9:13 pm
2 stops26h 03m
$1,368
St. LouisBangkok
STL - BKK
STLBKK
Lambert-St Louis
Sun 10/11
9:00 am-9:35 am
3 stops36h 35m
Bangkok Suvarnabhumi
Sat 10/24
3:45 pm-8:48 am
3 stops29h 03m
$1,376
Cheapest one-way
St. LouisBangkok
STL - BKK
STLBKK
Lambert-St Louis
Sat 8/1
8:08 pm-10:40 am
3 stops50h 32m
$585
Showing 1-10 of 18 resultsSorted by cheapest first
Best time to book a flight from St. Louis to Bangkok
Have a flexible travel schedule? Discover the best time to fly to Bangkok from St. Louis with our price prediction graph.
STL-TH1
STL-BKK
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from St. Louis to Bangkok
STL-TH1
STL-BKK
What is the cheapest month to book a flight from St. Louis to Bangkok?
Currently, February is the cheapest month in which you can book a flight from St. Louis to Bangkok (average of $167). Flying from St. Louis to Bangkok in June is currently the most expensive (average of $1,210). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
How much does it cost to fly round-trip from St. Louis to Bangkok?
How far ahead should I book a flight from St. Louis to Bangkok?
Booking 7 days in advance of your planned departure date is, on average, the best time to get cheap flights from St. Louis to Bangkok. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
Reviews of airlines servicing Bangkok
Get insights into the airlines that provide service to Bangkok. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Bangkok. Reviews last updated July 2, 2026.
Get a feel of what it's like to fly with Japan Airlines,Delta, andCathay Pacific from St. Louis to Bangkok by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Overall
8.3
Comfort
8.2
Entertainment
7.8
Boarding
8.4
Crew
8.7
Food
7.7
Reviews
1 / 20
10.0
ExcellentNymo,Nov 2025
NRT - BKK
Overall
8.3
Comfort
8.2
Entertainment
7.8
Boarding
8.4
Crew
8.7
Food
7.7
Reviews
1 / 20
10.0
ExcellentNymo,Nov 2025
NRT - BKK
Overall
8.3
Comfort
8.2
Entertainment
7.8
Boarding
8.4
Crew
8.7
Food
7.7
Reviews
1 / 20
10.0
ExcellentNymo,Nov 2025
NRT - BKK
Overall
8.3
Comfort
8.2
Entertainment
7.8
Boarding
8.4
Crew
8.7
Food
7.7
Reviews
1 / 20
10.0
ExcellentNymo,Nov 2025
NRT - BKK
Overall
8.3
Comfort
8.2
Entertainment
7.8
Boarding
8.4
Crew
8.7
Food
7.7
Reviews
1 / 20
10.0
ExcellentNymo,Nov 2025
NRT - BKK
Overall
8.3
Comfort
8.2
Entertainment
7.8
Boarding
8.4
Crew
8.7
Food
7.7
Reviews
1 / 20
10.0
ExcellentNymo,Nov 2025
NRT - BKK
Related info for your journey
Find useful and relevant information for your journey from St. Louis to Bangkok. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Top 8 airlines flying from St. Louis to Bangkok
Discover the top 8 airlines that operate flights from St. Louis to Bangkok. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 2, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$881 | Average$1,180 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$929 | Average$1,106 | FlexibilityNo cancel fee | On-time79% | |
| Cheapest$946 | Average$1,204 | FlexibilityNo cancel fee | On-time68% | |
| Cheapest$954 | Average$1,274 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$974 | Average$1,299 | FlexibilityNo cancel fee | On-time72% | |
| Cheapest$982 | Average$1,234 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$1,007 | Average$1,289 | FlexibilityNo cancel fee | On-time80% | |
| Cheapest$1,048 | Average$1,456 | FlexibilityNo cancel fee | On-time74% |