$434+ 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 4/25. Fares are subject to change and may not be available on all flights or dates of travel.
STL — BKK
Apr 29 — May 61
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
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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 March 30, 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 March 30, 2026.
This Etihad Airways deal was found by Cheapflights users on 3/27. 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 Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/87:00 am
STL
- BKK
2 stops35h 45m
Multiple Airlines
Tue 4/218:50 pm
BKK
- STL
2 stops34h 40m
Multiple Airlines
Deal found 3/27![Multiple Airlines logo]()
$954
This Etihad Airways deal was found by Cheapflights users on 3/26. 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 5/107:00 am
STL
- BKK
2 stops28h 50m
Multiple Airlines
Sun 5/173:55 pm
BKK
- STL
2 stops33h 27m
Multiple Airlines
Deal found 3/26![Multiple Airlines logo]()
$955
This Etihad Airways deal was found by Cheapflights users on 3/27. 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 Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/28:00 am
STL
- BKK
2 stops34h 30m
Multiple Airlines
Sat 5/99:00 pm
BKK
- STL
2 stops28h 22m
Multiple Airlines
Deal found 3/27![Multiple Airlines logo]()
$973
This Etihad Airways deal was found by Cheapflights users on 3/30. 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 Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/139:10 am
STL
- BKK
2 stops33h 35m
Multiple Airlines
Mon 4/208:50 pm
BKK
- STL
2 stops29h 13m
Multiple Airlines
Deal found 3/30![Multiple Airlines logo]()
$975
This Etihad Airways deal was found by Cheapflights users on 3/30. 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 Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/17:05 am
STL
- BKK
2 stops35h 40m
Multiple Airlines
Thu 4/308:50 pm
BKK
- STL
2 stops28h 32m
Multiple Airlines
Deal found 3/30![Multiple Airlines logo]()
$992
This Etihad Airways deal was found by Cheapflights users on 3/27. 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 Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/104:32 pm
STL
- BKK
2 stops26h 13m
Multiple Airlines
Tue 11/102:40 pm
BKK
- STL
2 stops36h 07m
Multiple Airlines
Deal found 3/27![Multiple Airlines logo]()
$1,008
This oojo deal was found by Cheapflights users on 3/26. 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.
Sun 11/16:41 am
STL
- BKK
2 stops45h 04m
China Airlines
Sun 11/85:50 pm
BKK
- STL
2 stops43h 09m
China Airlines
Deal found 3/26![China Airlines logo]()
$1,038
This Justfly.com deal was found by Cheapflights users on 3/27. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/1912:27 pm
STL
- BKK
2 stops30h 38m
Qatar Airways
Tue 4/282:05 am
BKK
- STL
2 stops32h 12m
Qatar Airways
Deal found 3/27![Qatar Airways logo]()
$1,039
This FlightHub deal was found by Cheapflights users on 3/28. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/314:18 pm
STL
- BKK
2 stops26h 57m
Qatar Airways
Mon 9/79:05 pm
BKK
- STL
2 stops34h 09m
Qatar Airways
Deal found 3/28![Qatar Airways logo]()
$1,041
This FlightHub deal was found by Cheapflights users on 3/26. 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.
Sun 10/252:47 pm
STL
- BKK
2 stops27h 28m
Qatar Airways
Thu 11/192:00 am
BKK
- STL
2 stops30h 27m
Qatar Airways
Deal found 3/26![Qatar Airways logo]()
$1,042
This FlightHub deal was found by Cheapflights users on 3/26. 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.
Mon 10/262:47 pm
STL
- BKK
2 stops27h 28m
Qatar Airways
Tue 11/173:00 am
BKK
- STL
2 stops33h 56m
Qatar Airways
Deal found 3/26![Qatar Airways logo]()
$1,051
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 March 30, 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 March 30, 2026.
This Etihad Airways deal was found by Cheapflights users on 3/28. 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 5/137:00 am
STL
- BKK
2 stops28h 50m
Multiple Airlines
Wed 5/203:55 pm
BKK
- STL
2 stops40h 35m
Multiple Airlines
Deal found 3/28![Multiple Airlines logo]()
$973
This United Airlines deal was found by Cheapflights users on 3/25. 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 4/226:30 am
STL
- BKK
2 stops34h 05m
United Airlines
Wed 4/299:35 am
BKK
- STL
2 stops56h 12m
United Airlines
Deal found 3/25![United Airlines logo]()
$1,447
This Etihad Airways deal was found by Cheapflights users on 3/26. 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.
Mon 4/137:00 am
STL
- BKK
2 stops35h 45m
Multiple Airlines
Mon 4/208:50 pm
BKK
- STL
2 stops31h 51m
Multiple Airlines
Deal found 3/26![Multiple Airlines logo]()
$975
This Etihad Airways deal was found by Cheapflights users on 3/28. 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.
Mon 5/187:05 am
STL
- BKK
2 stops35h 40m
Multiple Airlines
Mon 5/259:00 pm
BKK
- STL
2 stops34h 21m
Multiple Airlines
Deal found 3/28![Multiple Airlines logo]()
$1,360
This United Airlines deal was found by Cheapflights users on 3/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/246:00 am
STL
- BKK
3 stops39h 35m
United Airlines
Fri 5/17:00 am
BKK
- STL
2 stops23h 22m
United Airlines
Deal found 3/27![United Airlines logo]()
$1,512
This Etihad Airways deal was found by Cheapflights users on 3/29. 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 6/192:36 pm
STL
- BKK
2 stops27h 39m
Multiple Airlines
Sat 6/273:15 am
BKK
- STL
2 stops32h 39m
Multiple Airlines
Deal found 3/29![Multiple Airlines logo]()
$1,366
This United Airlines deal was found by Cheapflights users on 3/29. 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.
Tue 4/2810:00 am
STL
- BKK
3 stops35h 35m
United Airlines
Tue 5/53:45 pm
BKK
- STL
3 stops34h 47m
United Airlines
Deal found 3/29![United Airlines logo]()
$1,545
This United Airlines deal was found by Cheapflights users on 3/29. 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.
Mon 5/119:21 am
STL
- BKK
3 stops36h 14m
United Airlines
Mon 5/183:45 pm
BKK
- STL
3 stops29h 45m
United Airlines
Deal found 3/29![United Airlines logo]()
$1,565
This Etihad Airways deal was found by Cheapflights users on 3/27. 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 Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/96:00 am
STL
- BKK
2 stops29h 50m
Multiple Airlines
Mon 7/63:15 am
BKK
- STL
2 stops29h 14m
Multiple Airlines
Deal found 3/27![Multiple Airlines logo]()
$1,457
This China Airlines deal was found by Cheapflights users on 3/29. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/114:46 pm
STL
- BKK
2 stops31h 24m
Multiple Airlines
Mon 5/181:20 pm
BKK
- STL
3 stops37h 30m
Multiple Airlines
Deal found 3/29![Multiple Airlines logo]()
$1,512
Last-minute flights from St. Louis to BangkokDiscover last-minute flight deals from St. Louis to Bangkok. Data last updated March 30, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Bangkok. Data last updated March 30, 2026 and is based on user searches.
This Etihad Airways deal was found by Cheapflights users on 3/27. 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 Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/307:05 am
STL
- BKK
2 stops36h 20m
Multiple Airlines
Wed 4/18:40 pm
BKK
- STL
2 stops29h 03m
Multiple Airlines
Deal found 3/27![Multiple Airlines logo]()
$1,115
This Etihad Airways deal was found by Cheapflights users on 3/30. 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 Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/17:05 am
STL
- BKK
2 stops35h 40m
Multiple Airlines
Thu 4/308:50 pm
BKK
- STL
2 stops28h 32m
Multiple Airlines
Deal found 3/30![Multiple Airlines logo]()
$992
This Etihad Airways deal was found by Cheapflights users on 3/27. 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 Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/87:00 am
STL
- BKK
2 stops35h 45m
Multiple Airlines
Tue 4/218:50 pm
BKK
- STL
2 stops34h 40m
Multiple Airlines
Deal found 3/27![Multiple Airlines logo]()
$954
This Qatar Airways deal was found by Cheapflights users on 3/28. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/116:11 pm
STL
- BKK
2 stops54h 09m
Qatar Airways
Fri 4/247:40 pm
BKK
- STL
2 stops36h 29m
Qatar Airways
Deal found 3/28![Qatar Airways logo]()
$1,209
This Etihad Airways deal was found by Cheapflights users on 3/30. 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 Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/139:10 am
STL
- BKK
2 stops33h 35m
Multiple Airlines
Mon 4/208:50 pm
BKK
- STL
2 stops29h 13m
Multiple Airlines
Deal found 3/30![Multiple Airlines logo]()
$975
This BusinessClass deal was found by Cheapflights users on 3/28. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/182:33 pm
STL
- BKK
2 stops28h 32m
Qatar Airways
Thu 4/301:45 am
BKK
- STL
2 stops29h 48m
Qatar Airways
Deal found 3/28![Qatar Airways logo]()
$1,113
This Qatar Airways deal was found by Cheapflights users on 3/28. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/182:33 pm
STL
- BKK
2 stops28h 32m
Qatar Airways
Sat 4/251:45 am
BKK
- STL
2 stops32h 32m
Qatar Airways
Deal found 3/28![Qatar Airways logo]()
$1,186
This Justfly.com deal was found by Cheapflights users on 3/27. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/1912:27 pm
STL
- BKK
2 stops30h 38m
Qatar Airways
Tue 4/282:05 am
BKK
- STL
2 stops32h 12m
Qatar Airways
Deal found 3/27![Qatar Airways logo]()
$1,039
This Qatar Airways deal was found by Cheapflights users on 3/28. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/1912:27 pm
STL
- BKK
2 stops36h 28m
Qatar Airways
Fri 5/12:05 am
BKK
- STL
2 stops29h 28m
Qatar Airways
Deal found 3/28![Qatar Airways logo]()
$1,146
This BusinessClass deal was found by Cheapflights users on 3/28. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/222:33 pm
STL
- BKK
2 stops28h 32m
Qatar Airways
Wed 4/291:45 am
BKK
- STL
2 stops32h 32m
Qatar Airways
Deal found 3/28![Qatar Airways logo]()
$1,073
This Qatar Airways deal was found by Cheapflights users on 3/28. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/2312:27 pm
STL
- BKK
2 stops30h 38m
Qatar Airways
Fri 5/17:40 pm
BKK
- STL
2 stops35h 53m
Qatar Airways
Deal found 3/28![Qatar Airways logo]()
$1,106
This Qatar Airways deal was found by Cheapflights users on 3/28. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/2312:27 pm
STL
- BKK
2 stops30h 38m
Qatar Airways
Sat 4/252:05 am
BKK
- STL
2 stops32h 12m
Qatar Airways
Deal found 3/28![Qatar Airways logo]()
$1,227
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 March 30, 2026.
Search for one-way flight options from St. Louis to Bangkok. Find affordable one-way fares based on user searches. Data last updated March 30, 2026.
This Kiwi.com deal was found by Cheapflights users on 3/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/258:17 pm
STL
- BKK
3 stops36h 53m
Multiple Airlines
Deal found 3/27![Multiple Airlines logo]()
$434
This Kiwi.com deal was found by Cheapflights users on 3/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/273:21 pm
STL
- BKK
3 stops44h 49m
Multiple Airlines
Deal found 3/28![Multiple Airlines logo]()
$533
This Justfly.com deal was found by Cheapflights users on 3/28. 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.
Sun 4/262:33 pm
STL
- BKK
2 stops28h 32m
Qatar Airways
Deal found 3/28![Qatar Airways logo]()
$542
This Justfly.com deal was found by Cheapflights users on 3/27. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/128:35 am
STL
- BKK
2 stops34h 40m
Qatar Airways
Deal found 3/27![Qatar Airways logo]()
$547
This Etihad Airways deal was found by Cheapflights users on 3/27. 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 Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/56:00 am
STL
- BKK
2 stops36h 45m
Multiple Airlines
Deal found 3/27![Multiple Airlines logo]()
$549
This BusinessClass deal was found by Cheapflights users on 3/30. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/142:33 pm
STL
- BKK
2 stops27h 47m
Qatar Airways
Deal found 3/30![Qatar Airways logo]()
$553
This Kiwi.com deal was found by Cheapflights users on 3/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/292:33 pm
STL
- BKK
2 stops34h 22m
Qatar Airways
Deal found 3/28![Qatar Airways logo]()
$563
This FlightHub deal was found by Cheapflights users on 3/27. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/254:30 pm
STL
- BKK
2 stops32h 50m
Qatar Airways
Deal found 3/27![Qatar Airways logo]()
$582
This Qatar Airways deal was found by Cheapflights users on 3/28. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/3012:27 pm
STL
- BKK
2 stops36h 28m
Qatar Airways
Deal found 3/28![Qatar Airways logo]()
$585
This Kiwi.com deal was found by Cheapflights users on 3/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/711:21 am
STL
- BKK
3 stops55h 09m
Multiple Airlines
Deal found 3/28![Multiple Airlines logo]()
$597
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 March 30, 2026.
Round-trip from | $954 (Etihad Airways) |
|---|---|
One-way from | $434 (Kiwi.com) |
Popular in | December |
Cheapest in | February |
Average price | $1,270 |
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 March 30, 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 5/13
7:00 am-11:50 pm
2 stops28h 50m
Bangkok Suvarnabhumi
Wed 5/20
3:55 pm-8:30 pm
2 stops40h 35m
$973
St. LouisBangkok
STL - BKK
STLBKK
Lambert-St Louis
Mon 4/13
7:00 am-6:45 am
2 stops35h 45m
Bangkok Suvarnabhumi
Mon 4/20
8:50 pm-4:41 pm
2 stops31h 51m
$975
St. LouisBangkok
STL - BKK
STLBKK
Lambert-St Louis
Mon 5/18
7:05 am-6:45 am
2 stops35h 40m
Bangkok Suvarnabhumi
Mon 5/25
9:00 pm-7:21 pm
2 stops34h 21m
$1,360
St. LouisBangkok
STL - BKK
STLBKK
Lambert-St Louis
Fri 6/19
2:36 pm-6:15 am
2 stops27h 39m
Bangkok Suvarnabhumi
Sat 6/27
3:15 am-11:54 pm
2 stops32h 39m
$1,366
St. LouisBangkok
STL - BKK
STLBKK
Lambert-St Louis
Wed 4/22
6:30 am-4:35 am
2 stops34h 05m
Bangkok Suvarnabhumi
Wed 4/29
9:35 am-5:47 am
2 stops56h 12m
$1,447
Quickest round-trip
St. LouisBangkok
STL - BKK
STLBKK
Lambert-St Louis
Tue 6/9
6:00 am-11:50 pm
2 stops29h 50m
Bangkok Suvarnabhumi
Mon 7/6
3:15 am-8:29 pm
2 stops29h 14m
$1,457
St. LouisBangkok
STL - BKK
STLBKK
Lambert-St Louis
Fri 4/24
6:00 am-9:35 am
3 stops39h 35m
Bangkok Suvarnabhumi
Fri 5/1
7:00 am-6:22 pm
2 stops23h 22m
$1,512
St. LouisBangkok
STL - BKK
STLBKK
Lambert-St Louis
Mon 5/11
4:46 pm-12:10 pm
2 stops31h 24m
Bangkok Suvarnabhumi
Mon 5/18
1:20 pm-2:50 pm
3 stops37h 30m
$1,512
St. LouisBangkok
STL - BKK
STLBKK
Lambert-St Louis
Tue 4/28
10:00 am-9:35 am
3 stops35h 35m
Bangkok Suvarnabhumi
Tue 5/5
3:45 pm-2:32 pm
3 stops34h 47m
$1,545
St. LouisBangkok
STL - BKK
STLBKK
Lambert-St Louis
Mon 5/11
9:21 am-9:35 am
3 stops36h 14m
Bangkok Suvarnabhumi
Mon 5/18
3:45 pm-9:30 am
3 stops29h 45m
$1,565
Showing 1-10 of 21 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
How far ahead should I book a flight from St. Louis to Bangkok?
Use this chart to determine the optimal time to book a round-trip flight from St. Louis to Bangkok. Price data was last updated on March 13, 2026.
Booking 10 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.
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 $917). Flying from St. Louis to Bangkok in June is currently the most expensive (average of $1,225). 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?
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 March 30, 2026.
Get a feel of what it's like to fly with ANA,Japan Airlines, andDelta 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.
Crew
8.7
Comfort
8.2
Boarding
8.5
Overall
8.4
Entertainment
8.0
Food
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,Feb 2026
BKK - NRT
Crew
8.7
Comfort
8.2
Boarding
8.5
Overall
8.4
Entertainment
8.0
Food
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,Feb 2026
BKK - NRT
Crew
8.7
Comfort
8.2
Boarding
8.5
Overall
8.4
Entertainment
8.0
Food
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,Feb 2026
BKK - NRT
Crew
8.7
Comfort
8.2
Boarding
8.5
Overall
8.4
Entertainment
8.0
Food
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,Feb 2026
BKK - NRT
Crew
8.7
Comfort
8.2
Boarding
8.5
Overall
8.4
Entertainment
8.0
Food
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,Feb 2026
BKK - NRT
Crew
8.7
Comfort
8.2
Boarding
8.5
Overall
8.4
Entertainment
8.0
Food
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,Feb 2026
BKK - NRT
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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Alternative routes for St. Louis to Bangkok
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Complete your trip
Complete your trip to Bangkok by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from St. Louis to Bangkok by cabin class
Find flights from St. Louis to Bangkok, based on your preferred cabin class, be it economy, premium economy, business, or first class.
St. Louis and Bangkok flights
Browse other St. Louis and Bangkok flight options. Last updated on March 30, 2026.
Other flights from St. Louis
Browse through other flights departing from St. Louis. Flights are based on user searches made on Cheapflights and were last updated on March 30, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 7 airlines flying from St. Louis to Bangkok
Discover the top 7 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 March 30, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$929 | Average$1,087 | FlexibilityNo cancel fee | On-time79% | |
| Cheapest$954 | Average$1,278 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$974 | Average$1,315 | FlexibilityNo cancel fee | On-time72% | |
| Cheapest$978 | Average$1,275 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$983 | Average$1,246 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$1,007 | Average$1,246 | FlexibilityNo cancel fee | On-time80% | |
| Cheapest$1,017 | Average$1,188 | FlexibilityNo cancel fee | On-time68% |