$407+ Cheap flights from St. Louis (STL) to Thailand
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 4/18. Fares are subject to change and may not be available on all flights or dates of travel.
STL — BKK
Mar 14 — Mar 211
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from St. Louis to Thailand 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 Thailand
Cheapest
Best
Last-minute
One-way
Cheapest flights from St. Louis to ThailandExplore the most affordable flight options available from St. Louis to Thailand. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 12, 2026.
Explore the most affordable flight options available from St. Louis to Thailand. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 12, 2026.
This oojo deal was found by Cheapflights users on 2/11. 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 9/27:46 pm
STL
- BKK
2 stops32h 44m
Cathay Pacific
Wed 9/167:35 am
BKK
- STL
2 stops26h 50m
Cathay Pacific
Deal found 2/11![Cathay Pacific logo]()
$901
This oojo deal was found by Cheapflights users on 2/11. 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 3/117:00 am
STL
- BKK
2 stops47h 15m
Cathay Pacific
Wed 3/1811:40 am
BKK
- STL
2 stops23h 18m
Cathay Pacific
Deal found 2/11![Cathay Pacific logo]()
$907
This SmartFares deal was found by Cheapflights users on 2/12. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/187:32 pm
STL
- BKK
2 stops28h 28m
Multiple Airlines
Fri 9/251:10 pm
BKK
- STL
2 stops37h 16m
Multiple Airlines
Deal found 2/12![Multiple Airlines logo]()
$908
This oojo deal was found by Cheapflights users on 2/11. 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 11/167:00 am
STL
- BKK
2 stops38h 40m
Cathay Pacific
Thu 12/37:55 am
BKK
- STL
2 stops29h 02m
Cathay Pacific
Deal found 2/11![Cathay Pacific logo]()
$931
This Delta deal was found by Cheapflights users on 2/12. 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.
Tue 2/176:10 am
STL
- BKK
2 stops29h 35m
Delta
Wed 3/42:05 am
BKK
- STL
2 stops34h 18m
Delta
Deal found 2/12![Delta logo]()
$932
This SmartFares deal was found by Cheapflights users on 2/12. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/137:00 am
STL
- BKK
2 stops38h 45m
Multiple Airlines
Mon 4/205:30 pm
BKK
- STL
2 stops33h 21m
Multiple Airlines
Deal found 2/12![Multiple Airlines logo]()
$934
This Delta deal was found by Cheapflights users on 2/12. 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.
Mon 3/25:50 pm
STL
- BKK
2 stops41h 55m
Delta
Mon 3/99:30 pm
BKK
- STL
2 stops38h 28m
Delta
Deal found 2/12![Delta logo]()
$938
This oojo deal was found by Cheapflights users on 2/12. 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 4/86:11 pm
STL
- BKK
2 stops31h 49m
Cathay Pacific
Tue 4/217:35 am
BKK
- STL
2 stops28h 22m
Cathay Pacific
Deal found 2/12![Cathay Pacific logo]()
$942
This SmartFares deal was found by Cheapflights users on 2/9. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/17:00 am
STL
- BKK
2 stops40h 35m
Multiple Airlines
Thu 3/125:40 pm
BKK
- STL
2 stops42h 19m
Multiple Airlines
Deal found 2/9![Multiple Airlines logo]()
$945
This oojo deal was found by Cheapflights users on 2/10. 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 3/22:47 pm
STL
- BKK
2 stops32h 48m
STARLUX Airlines
Mon 3/95:40 pm
BKK
- STL
2 stops56h 11m
STARLUX Airlines
Deal found 2/10![STARLUX Airlines logo]()
$946
This oojo deal was found by Cheapflights users on 2/11. 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.
Fri 2/208:00 am
STL
- BKK
2 stops27h 15m
Cathay Pacific
Mon 3/912:45 pm
BKK
- STL
2 stops47h 13m
Cathay Pacific
Deal found 2/11![Cathay Pacific logo]()
$951
This United Airlines deal was found by Cheapflights users on 2/12. 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 2/162:45 pm
STL
- BKK
3 stops31h 40m
United Airlines
Thu 3/54:55 pm
BKK
- STL
3 stops37h 49m
United Airlines
Deal found 2/12![United Airlines logo]()
$952
Best flights from St. Louis to ThailandDiscover carefully curated flight deals from St. Louis to Thailand that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 12, 2026.
Discover carefully curated flight deals from St. Louis to Thailand that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 12, 2026.
This Delta deal was found by Cheapflights users on 2/12. 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.
Mon 3/25:50 pm
STL
- BKK
2 stops41h 55m
Delta
Mon 3/99:30 pm
BKK
- STL
2 stops38h 28m
Delta
Deal found 2/12![Delta logo]()
$938
This SmartFares deal was found by Cheapflights users on 2/9. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/17:00 am
STL
- BKK
2 stops40h 35m
Multiple Airlines
Thu 3/125:40 pm
BKK
- STL
2 stops42h 19m
Multiple Airlines
Deal found 2/9![Multiple Airlines logo]()
$945
This United Airlines deal was found by Cheapflights users on 2/9. 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 3/27:41 am
STL
- BKK
3 stops38h 44m
United Airlines
Mon 3/94:55 pm
BKK
- STL
3 stops33h 54m
United Airlines
Deal found 2/9![United Airlines logo]()
$952
This oojo deal was found by Cheapflights users on 2/11. 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 4/16:50 pm
STL
- BKK
2 stops35h 10m
Cathay Pacific
Thu 4/307:35 am
BKK
- STL
2 stops27h 24m
Cathay Pacific
Deal found 2/11![Cathay Pacific logo]()
$1,006
This oojo deal was found by Cheapflights users on 2/10. 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 5/54:46 pm
STL
- CNX
2 stops29h 34m
China Airlines
Thu 5/1411:20 am
CNX
- STL
2 stops43h 40m
China Airlines
Deal found 2/10![China Airlines logo]()
$1,043
This Qatar Airways deal was found by Cheapflights users on 2/9. 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.
Tue 5/511:45 am
STL
- CNX
3 stops35h 30m
Qatar Airways
Thu 5/148:00 pm
CNX
- STL
3 stops35h 33m
Qatar Airways
Deal found 2/9![Qatar Airways logo]()
$1,393
This United Airlines deal was found by Cheapflights users on 2/12. 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 2/182:45 pm
STL
- BKK
3 stops31h 40m
United Airlines
Thu 3/54:55 pm
BKK
- STL
3 stops30h 41m
United Airlines
Deal found 2/12![United Airlines logo]()
$952
This Delta deal was found by Cheapflights users on 2/12. 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.
Tue 2/176:10 am
STL
- BKK
2 stops29h 35m
Delta
Thu 3/52:05 am
BKK
- STL
2 stops34h 18m
Delta
Deal found 2/12![Delta logo]()
$966
This SmartFares deal was found by Cheapflights users on 2/12. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/54:46 pm
STL
- CNX
2 stops29h 34m
Multiple Airlines
Thu 5/1411:20 am
CNX
- STL
2 stops43h 40m
Multiple Airlines
Deal found 2/12![Multiple Airlines logo]()
$1,010
This United Airlines deal was found by Cheapflights users on 2/12. 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 2/175:25 pm
STL
- BKK
2 stops29h 00m
United Airlines
Sun 3/84:55 pm
BKK
- STL
2 stops41h 30m
United Airlines
Deal found 2/12![United Airlines logo]()
$965
This oojo deal was found by Cheapflights users on 2/11. 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 6/179:41 am
STL
- HKT
2 stops37h 09m
Cathay Pacific
Sun 6/2111:50 am
HKT
- STL
2 stops48h 09m
Cathay Pacific
Deal found 2/11![Cathay Pacific logo]()
$1,071
This United Airlines deal was found by Cheapflights users on 2/12. 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 2/157:41 am
STL
- BKK
3 stops38h 44m
United Airlines
Thu 3/54:55 pm
BKK
- STL
3 stops30h 41m
United Airlines
Deal found 2/12![United Airlines logo]()
$986
This Delta deal was found by Cheapflights users on 2/9. 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 4/16:32 am
STL
- HKT
2 stops27h 38m
Delta
Thu 4/3011:25 pm
HKT
- STL
2 stops37h 00m
Delta
Deal found 2/9![Delta logo]()
$1,170
This KAYAK deal was found by Cheapflights users on 2/11. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/15:00 pm
STL
- HKT
2 stops53h 50m
Cathay Pacific
Sun 8/911:50 am
HKT
- STL
2 stops47h 13m
Cathay Pacific
Deal found 2/11![Cathay Pacific logo]()
$1,173
This United Airlines deal was found by Cheapflights users on 2/12. 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 2/158:17 am
STL
- BKK
3 stops38h 08m
United Airlines
Sun 3/84:55 pm
BKK
- STL
2 stops41h 30m
United Airlines
Deal found 2/12![United Airlines logo]()
$995
This BusinessClass deal was found by Cheapflights users on 2/9. 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 3/186:50 pm
STL
- HKT
2 stops34h 45m
Multiple Airlines
Wed 3/257:45 am
HKT
- STL
3 stops27h 13m
Multiple Airlines
Deal found 2/9![Multiple Airlines logo]()
$1,267
This United Airlines deal was found by Cheapflights users on 2/9. 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 4/78:30 am
STL
- BKK
2 stops37h 05m
United Airlines
Tue 4/213:45 pm
BKK
- STL
3 stops29h 40m
United Airlines
Deal found 2/9![United Airlines logo]()
$998
This Delta deal was found by Cheapflights users on 2/8. 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.
Sun 3/16:40 pm
STL
- HKT
2 stops38h 30m
Delta
Sun 3/811:40 pm
HKT
- STL
2 stops33h 26m
Delta
Deal found 2/8![Delta logo]()
$1,285
This KAYAK deal was found by Cheapflights users on 2/11. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/17:50 pm
STL
- HKT
2 stops51h 00m
Multiple Airlines
Sun 8/97:35 am
HKT
- STL
3 stops27h 28m
Multiple Airlines
Deal found 2/11![Multiple Airlines logo]()
$1,290
This KAYAK deal was found by Cheapflights users on 2/11. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/512:25 pm
STL
- CNX
3 stops42h 45m
Cathay Pacific
Thu 5/1411:55 am
CNX
- STL
3 stops47h 04m
Cathay Pacific
Deal found 2/11![Cathay Pacific logo]()
$1,317
This United Airlines deal was found by Cheapflights users on 2/11. 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 4/204:49 pm
STL
- BKK
3 stops28h 46m
United Airlines
Mon 4/273:45 pm
BKK
- STL
3 stops42h 43m
United Airlines
Deal found 2/11![United Airlines logo]()
$1,015
This oojo deal was found by Cheapflights users on 2/11. 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 3/246:38 am
STL
- HKT
2 stops40h 42m
Cathay Pacific
Tue 3/3111:50 am
HKT
- STL
2 stops48h 08m
Cathay Pacific
Deal found 2/11![Cathay Pacific logo]()
$1,333
This BusinessClass deal was found by Cheapflights users on 2/11. 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 3/246:38 am
STL
- HKT
2 stops40h 42m
Multiple Airlines
Tue 3/317:35 am
HKT
- STL
3 stops27h 47m
Multiple Airlines
Deal found 2/11![Multiple Airlines logo]()
$1,362
This oojo deal was found by Cheapflights users on 2/10. 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 3/186:50 pm
STL
- HKT
2 stops28h 30m
Cathay Pacific
Wed 3/2512:20 pm
HKT
- STL
2 stops47h 38m
Cathay Pacific
Deal found 2/10![Cathay Pacific logo]()
$1,334
This KAYAK deal was found by Cheapflights users on 2/10. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/167:00 am
STL
- CNX
2 stops39h 35m
Multiple Airlines
Tue 3/3111:35 am
CNX
- STL
2 stops48h 24m
Multiple Airlines
Deal found 2/10![Multiple Airlines logo]()
$1,441
Last-minute flights from St. Louis to ThailandDiscover last-minute flight deals from St. Louis to Thailand. Data last updated February 12, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Thailand. Data last updated February 12, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 2/12. 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.
Sun 2/156:35 am
STL
- BKK
2 stops29h 10m
Delta
Wed 3/42:05 am
BKK
- STL
2 stops34h 31m
Delta
Deal found 2/12![Delta logo]()
$966
This United Airlines deal was found by Cheapflights users on 2/12. 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 2/162:45 pm
STL
- BKK
3 stops31h 40m
United Airlines
Thu 3/54:55 pm
BKK
- STL
3 stops37h 49m
United Airlines
Deal found 2/12![United Airlines logo]()
$952
This United Airlines deal was found by Cheapflights users on 2/12. 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 2/165:25 pm
STL
- BKK
2 stops29h 00m
United Airlines
Sun 3/84:55 pm
BKK
- STL
2 stops41h 30m
United Airlines
Deal found 2/12![United Airlines logo]()
$965
This Delta deal was found by Cheapflights users on 2/12. 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.
Tue 2/176:10 am
STL
- BKK
2 stops29h 35m
Delta
Wed 3/42:05 am
BKK
- STL
2 stops34h 18m
Delta
Deal found 2/12![Delta logo]()
$932
This oojo deal was found by Cheapflights users on 2/10. 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 2/1910:37 am
STL
- HKT
2 stops43h 18m
Qatar Airways
Mon 3/28:20 am
HKT
- STL
2 stops48h 09m
Qatar Airways
Deal found 2/10![Qatar Airways logo]()
$1,263
This oojo deal was found by Cheapflights users on 2/11. 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.
Fri 2/208:00 am
STL
- BKK
2 stops27h 15m
Cathay Pacific
Mon 3/912:45 pm
BKK
- STL
2 stops47h 13m
Cathay Pacific
Deal found 2/11![Cathay Pacific logo]()
$951
This SmartFares deal was found by Cheapflights users on 2/9. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/17:00 am
STL
- BKK
2 stops40h 35m
Multiple Airlines
Thu 3/125:40 pm
BKK
- STL
2 stops42h 19m
Multiple Airlines
Deal found 2/9![Multiple Airlines logo]()
$945
This Delta deal was found by Cheapflights users on 2/12. 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.
Mon 3/25:50 pm
STL
- BKK
2 stops41h 55m
Delta
Mon 3/99:30 pm
BKK
- STL
2 stops38h 28m
Delta
Deal found 2/12![Delta logo]()
$938
This oojo deal was found by Cheapflights users on 2/10. 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 3/22:47 pm
STL
- BKK
2 stops32h 48m
STARLUX Airlines
Mon 3/95:40 pm
BKK
- STL
2 stops56h 11m
STARLUX Airlines
Deal found 2/10![STARLUX Airlines logo]()
$946
This United Airlines deal was found by Cheapflights users on 2/9. 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 3/27:41 am
STL
- BKK
3 stops38h 44m
United Airlines
Mon 3/94:55 pm
BKK
- STL
2 stops41h 30m
United Airlines
Deal found 2/9![United Airlines logo]()
$960
This oojo deal was found by Cheapflights users on 2/11. 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 3/117:00 am
STL
- BKK
2 stops47h 15m
Cathay Pacific
Wed 3/1811:40 am
BKK
- STL
2 stops23h 18m
Cathay Pacific
Deal found 2/11![Cathay Pacific logo]()
$907
This Etihad Airways deal was found by Cheapflights users on 2/9. 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 3/229:15 am
STL
- BKK
2 stops33h 55m
Multiple Airlines
Sun 9/203:05 pm
BKK
- STL
2 stops36h 22m
Multiple Airlines
Deal found 2/9![Multiple Airlines logo]()
$955
One-way flights from St. Louis to ThailandSearch for one-way flight options from St. Louis to Thailand. Find affordable one-way fares based on user searches. Data last updated February 12, 2026.
Search for one-way flight options from St. Louis to Thailand. Find affordable one-way fares based on user searches. Data last updated February 12, 2026.
This Kiwi.com deal was found by Cheapflights users on 2/11. 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 4/188:12 pm
STL
- BKK
3 stops50h 28m
Multiple Airlines
Deal found 2/11![Multiple Airlines logo]()
$407
This oojo deal was found by Cheapflights users on 2/10. 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 3/17:00 am
STL
- BKK
2 stops40h 00m
Philippine Airlines
Deal found 2/10![Philippine Airlines logo]()
$416
This Kiwi.com deal was found by Cheapflights users on 2/10. 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 3/912:14 pm
STL
- BKK
3 stops45h 11m
Multiple Airlines
Deal found 2/10![Multiple Airlines logo]()
$426
This KAYAK deal was found by Cheapflights users on 2/11. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/17:00 am
STL
- BKK
2 stops40h 00m
Multiple Airlines
Deal found 2/11![Multiple Airlines logo]()
$432
This Kiwi.com deal was found by Cheapflights users on 2/11. 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 4/138:16 pm
STL
- BKK
3 stops51h 54m
Multiple Airlines
Deal found 2/11![Multiple Airlines logo]()
$436
This Kiwi.com deal was found by Cheapflights users on 2/11. 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.
Thu 4/1611:21 am
STL
- BKK
3 stops41h 19m
Multiple Airlines
Deal found 2/11![Multiple Airlines logo]()
$461
This Kiwi.com deal was found by Cheapflights users on 2/11. 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 4/143:50 pm
STL
- BKK
2 stops32h 20m
Multiple Airlines
Deal found 2/11![Multiple Airlines logo]()
$479
This SmartFares deal was found by Cheapflights users on 2/11. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/157:00 am
STL
- BKK
2 stops45h 40m
Multiple Airlines
Deal found 2/11![Multiple Airlines logo]()
$481
This Kiwi.com deal was found by Cheapflights users on 2/10. 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 5/64:55 pm
STL
- BKK
3 stops53h 45m
Multiple Airlines
Deal found 2/10![Multiple Airlines logo]()
$488
This Trip.com deal was found by Cheapflights users on 2/10. 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.
Sun 6/213:30 pm
STL
- HKT
2 stops33h 10m
Multiple Airlines
Deal found 2/10![Multiple Airlines logo]()
$795
Find flight deals from St. Louis to Thailand
Keep the following information in mind while searching for St. Louis to Thailand flight deals. Data was last updated February 12, 2026.
Round-trip from | $907 (oojo) |
|---|---|
One-way from | $407 (Kiwi.com) |
Popular in | December |
Cheapest in | January |
Average price | $1,106 |
Cheapflights Fare Finder
Customize your flight search to find flights from St. Louis to Thailand 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 February 12, 2026.
Use the filters below to find and compare flights from St. Louis to Thailand that are best for you.
Fly from
St. Louis
Fly to
Thailand
Route
Depart
Return
Price
St. LouisBangkok
STL - BKK
STLBKK
Lambert-St Louis
Mon 3/2
5:50 pm-12:45 am
2 stops41h 55m
Bangkok Suvarnabhumi
Mon 3/9
9:30 pm-11:58 pm
2 stops38h 28m
$938
St. LouisBangkok
STL - BKK
STLBKK
Lambert-St Louis
Sun 3/1
7:00 am-12:35 pm
2 stops40h 35m
Bangkok Suvarnabhumi
Thu 3/12
5:40 pm-11:59 pm
2 stops42h 19m
$945
St. LouisBangkok
STL - BKK
STLBKK
Lambert-St Louis
Mon 3/2
7:41 am-11:25 am
3 stops38h 44m
Bangkok Suvarnabhumi
Mon 3/9
4:55 pm-2:49 pm
3 stops33h 54m
$952
St. LouisBangkok
STL - BKK
STLBKK
Lambert-St Louis
Wed 2/18
2:45 pm-11:25 am
3 stops31h 40m
Bangkok Suvarnabhumi
Thu 3/5
4:55 pm-10:36 am
3 stops30h 41m
$952
St. LouisBangkok
STL - BKK
STLBKK
Lambert-St Louis
Tue 2/17
5:25 pm-11:25 am
2 stops29h 00m
Bangkok Suvarnabhumi
Sun 3/8
4:55 pm-10:25 pm
2 stops41h 30m
$965
St. LouisBangkok
STL - BKK
STLBKK
Lambert-St Louis
Tue 2/17
6:10 am-12:45 am
2 stops29h 35m
Bangkok Suvarnabhumi
Thu 3/5
2:05 am-11:23 pm
2 stops34h 18m
$966
St. LouisBangkok
STL - BKK
STLBKK
Lambert-St Louis
Sun 2/15
7:41 am-11:25 am
3 stops38h 44m
Bangkok Suvarnabhumi
Thu 3/5
4:55 pm-10:36 am
3 stops30h 41m
$986
St. LouisBangkok
STL - BKK
STLBKK
Lambert-St Louis
Sun 2/15
8:17 am-11:25 am
3 stops38h 08m
Bangkok Suvarnabhumi
Sun 3/8
4:55 pm-10:25 pm
2 stops41h 30m
$995
St. LouisBangkok
STL - BKK
STLBKK
Lambert-St Louis
Tue 4/7
8:30 am-9:35 am
2 stops37h 05m
Bangkok Suvarnabhumi
Tue 4/21
3:45 pm-9:25 am
3 stops29h 40m
$998
St. LouisBangkok
STL - BKK
STLBKK
Lambert-St Louis
Wed 4/1
6:50 pm-6:00 pm
2 stops35h 10m
Bangkok Suvarnabhumi
Thu 4/30
7:35 am-10:59 pm
2 stops27h 24m
$1,006
Showing 1-10 of 34 results
Best time to book a flight from St. Louis to Thailand
Have a flexible travel schedule? Discover the best time to fly to Thailand from St. Louis with our price prediction graph.
STL-BKK
STL-HKT
STL-CNX
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 Thailand
STL-TH0
STL-BKK
STL-HKT
STL-CNX
What is the cheapest month to book a flight from St. Louis to Thailand?
Currently, January is the cheapest month in which you can book a flight from St. Louis to Thailand (average of $897). Flying from St. Louis to Thailand in June is currently the most expensive (average of $1,227). 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.
What is the cheapest time of day to fly from STL to TH?
Find hourly flight availability from St. Louis to Thailand. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 12, 2026.
When flying from St. Louis to Thailand, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 62% versus a flight at noon.
What is the cheapest day to fly from St. Louis to Thailand?
Use this chart to determine the cheapest time to fly round-trip from St. Louis to Thailand. Price data was last updated on March 30, 2025.
Travelers seeking maximum savings on their St. Louis to Thailand flight should consider departing on Monday at noon when fares are most often at their lowest. Friday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
Reviews of airlines servicing Thailand
Get insights into the airlines that provide service to Thailand. 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 Thailand. Reviews last updated February 12, 2026.
See what other customers who have flown with ANA, Japan Airlines, and Delta from St. Louis to Thailand have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.6
Comfort
8.2
Entertainment
7.9
Crew
8.7
Food
7.8
Overall
8.4
Reviews
1 / 20
10.0
ExcellentAnonymous,Feb 2026
BKK - NRT
Boarding
8.6
Comfort
8.2
Entertainment
7.9
Crew
8.7
Food
7.8
Overall
8.4
Reviews
1 / 20
10.0
ExcellentAnonymous,Feb 2026
BKK - NRT
Boarding
8.6
Comfort
8.2
Entertainment
7.9
Crew
8.7
Food
7.8
Overall
8.4
Reviews
1 / 20
10.0
ExcellentAnonymous,Feb 2026
BKK - NRT
Boarding
8.6
Comfort
8.2
Entertainment
7.9
Crew
8.7
Food
7.8
Overall
8.4
Reviews
1 / 20
10.0
ExcellentAnonymous,Feb 2026
BKK - NRT
Boarding
8.6
Comfort
8.2
Entertainment
7.9
Crew
8.7
Food
7.8
Overall
8.4
Reviews
1 / 20
10.0
ExcellentAnonymous,Feb 2026
BKK - NRT
Boarding
8.6
Comfort
8.2
Entertainment
7.9
Crew
8.7
Food
7.8
Overall
8.4
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 Thailand. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Popular flights
Top destinations
Top regions
Alternative routes for St. Louis to Thailand
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Thailand by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from St. Louis to Thailand by cabin class
Find flights from St. Louis to Thailand, based on your preferred cabin class, be it economy, premium economy, business, or first class.
St. Louis and Thailand flights
Browse other St. Louis and Thailand flight options. Last updated on February 12, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
St. Louis to Thailand flights
Consider these flights traveling from St. Louis to Thailand.
Fly to Thailand regions
Consider these flights traveling to Thailand regions.
Top 9 airlines flying from St. Louis to Thailand
Discover the top 9 airlines that operate flights from St. Louis to Thailand. 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 February 12, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$881 | Average$1,448 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$927 | Average$1,256 | FlexibilityNo cancel fee | On-time72% | |
| Cheapest$954 | Average$1,351 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$966 | Average$1,131 | FlexibilityNo cancel fee | On-time79% | |
| Cheapest$984 | Average$1,232 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$1,007 | Average$1,241 | FlexibilityNo cancel fee | On-time80% | |
| Cheapest$1,017 | Average$1,372 | FlexibilityNo cancel fee | On-time68% | |
| Cheapest$1,280 | Average$1,806 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$1,289 | Average$1,458 | FlexibilityNo cancel fee | On-time76% |