$535+ 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 9/1. Fares are subject to change and may not be available on all flights or dates of travel.
STL — BKK
Jun 9 — Jun 161
Round-trip
1 adult, Economy
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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 May 10, 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 May 10, 2026.
This Fareboom deal was found by Cheapflights users on 5/7. 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 Fareboom is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/66:54 pm
STL
- BKK
2 stops28h 36m
Multiple Airlines
Tue 9/159:35 pm
BKK
- STL
2 stops27h 14m
Multiple Airlines
Deal found 5/7![Multiple Airlines logo]()
$998
This oojo deal was found by Cheapflights users on 5/5. 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 8/205:23 am
STL
- BKK
2 stops30h 27m
Etihad Airways
Wed 11/182:40 pm
BKK
- STL
2 stops40h 14m
Etihad Airways
Deal found 5/5![Etihad Airways logo]()
$1,031
This Etihad Airways deal was found by Cheapflights users on 5/7. 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 9/210:22 am
STL
- BKK
2 stops32h 23m
Multiple Airlines
Fri 9/183:15 am
BKK
- STL
2 stops28h 48m
Multiple Airlines
Deal found 5/7![Multiple Airlines logo]()
$1,038
This Etihad Airways deal was found by Cheapflights users on 5/8. 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 Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/116:03 am
STL
- BKK
2 stops29h 47m
Multiple Airlines
Sun 10/188:45 pm
BKK
- STL
2 stops30h 45m
Multiple Airlines
Deal found 5/8![Multiple Airlines logo]()
$1,040
This Etihad Airways deal was found by Cheapflights users on 5/8. 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 Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/247:44 am
STL
- BKK
2 stops35h 01m
Multiple Airlines
Wed 10/79:00 pm
BKK
- STL
2 stops35h 08m
Multiple Airlines
Deal found 5/8![Multiple Airlines logo]()
$1,044
This oojo deal was found by Cheapflights users on 5/6. 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 10/95:30 am
STL
- BKK
2 stops36h 45m
Etihad Airways
Thu 10/229:45 am
BKK
- STL
2 stops41h 45m
Etihad Airways
Deal found 5/6![Etihad Airways logo]()
$1,092
This oojo deal was found by Cheapflights users on 5/10. 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 8/196:00 am
STL
- BKK
2 stops29h 50m
Etihad Airways
Fri 9/43:05 pm
BKK
- STL
2 stops38h 29m
Etihad Airways
Deal found 5/10![Etihad Airways logo]()
$1,093
This Etihad Airways deal was found by Cheapflights users on 5/7. 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 10/119:47 am
STL
- BKK
2 stops32h 28m
Multiple Airlines
Sat 10/249:00 pm
BKK
- STL
2 stops35h 08m
Multiple Airlines
Deal found 5/7![Multiple Airlines logo]()
$1,098
This Etihad Airways deal was found by Cheapflights users on 5/8. 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 Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/96:02 am
STL
- BKK
2 stops29h 48m
Multiple Airlines
Thu 10/229:00 pm
BKK
- STL
2 stops30h 30m
Multiple Airlines
Deal found 5/8![Multiple Airlines logo]()
$1,099
This Etihad Airways deal was found by Cheapflights users on 5/7. 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 8/151:25 pm
STL
- BKK
2 stops34h 25m
Multiple Airlines
Sat 8/293:15 am
BKK
- STL
2 stops32h 44m
Multiple Airlines
Deal found 5/7![Multiple Airlines logo]()
$1,158
This Etihad Airways deal was found by Cheapflights users on 5/9. 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.
Mon 7/279:24 am
STL
- BKK
2 stops33h 21m
Multiple Airlines
Wed 7/293:15 am
BKK
- STL
2 stops28h 06m
Multiple Airlines
Deal found 5/9![Multiple Airlines logo]()
$1,159
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 May 10, 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 May 10, 2026.
This Etihad Airways deal was found by Cheapflights users on 5/6. 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 10/119:47 am
STL
- BKK
2 stops32h 28m
Multiple Airlines
Sat 10/249:00 pm
BKK
- STL
2 stops35h 08m
Multiple Airlines
Deal found 5/6![Multiple Airlines logo]()
$1,098
This United Airlines deal was found by Cheapflights users on 5/9. 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.
Wed 9/301:27 pm
STL
- BKK
3 stops32h 08m
United Airlines
Tue 11/179:10 am
BKK
- STL
2 stops26h 44m
United Airlines
Deal found 5/9![United Airlines logo]()
$1,544
This Etihad Airways deal was found by Cheapflights users on 5/5. 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.
Thu 9/36:00 am
STL
- BKK
2 stops29h 50m
Multiple Airlines
Mon 9/149:00 pm
BKK
- STL
2 stops29h 59m
Multiple Airlines
Deal found 5/5![Multiple Airlines logo]()
$1,099
This Etihad Airways deal was found by Cheapflights users on 5/7. 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 8/151:25 pm
STL
- BKK
2 stops34h 25m
Multiple Airlines
Sat 8/293:15 am
BKK
- STL
2 stops32h 44m
Multiple Airlines
Deal found 5/7![Multiple Airlines logo]()
$1,158
This Etihad Airways deal was found by Cheapflights users on 5/10. 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 Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/85:23 am
STL
- BKK
2 stops30h 27m
Multiple Airlines
Wed 8/198:45 pm
BKK
- STL
2 stops32h 49m
Multiple Airlines
Deal found 5/10![Multiple Airlines logo]()
$1,239
This United Airlines deal was found by Cheapflights users on 5/9. 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.
Sun 11/11:30 pm
STL
- BKK
3 stops32h 55m
United Airlines
Wed 11/114:55 pm
BKK
- STL
3 stops30h 32m
United Airlines
Deal found 5/9![United Airlines logo]()
$1,595
This United Airlines deal was found by Cheapflights users on 5/6. 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.
Sat 10/107:00 am
STL
- BKK
2 stops28h 55m
United Airlines
Tue 11/104:55 pm
BKK
- STL
3 stops29h 47m
United Airlines
Deal found 5/6![United Airlines logo]()
$1,598
This China Airlines deal was found by Cheapflights users on 5/8. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/14:00 pm
STL
- BKK
3 stops28h 50m
Multiple Airlines
Sun 11/82:05 pm
BKK
- STL
2 stops37h 21m
Multiple Airlines
Deal found 5/8![Multiple Airlines logo]()
$1,579
Last-minute flights from St. Louis to BangkokDiscover last-minute flight deals from St. Louis to Bangkok. Data last updated May 10, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Bangkok. Data last updated May 10, 2026 and is based on user searches.
This Air Canada deal was found by Cheapflights users on 5/8. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/82:15 pm
STL
- BKK
2 stops50h 50m
Air Canada
Thu 5/149:50 am
BKK
- STL
2 stops38h 16m
Air Canada
Deal found 5/8![Air Canada logo]()
$1,428
This Orbitz deal was found by Cheapflights users on 5/7. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/81:05 pm
STL
- BKK
2 stops38h 20m
Multiple Airlines
Thu 5/141:20 am
BKK
- STL
2 stops34h 34m
Multiple Airlines
Deal found 5/7![Multiple Airlines logo]()
$1,448
This IEagle deal was found by Cheapflights users on 5/8. 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 IEagle is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/94:46 pm
STL
- BKK
2 stops30h 09m
Multiple Airlines
Tue 5/194:45 pm
BKK
- STL
2 stops34h 31m
Multiple Airlines
Deal found 5/8![Multiple Airlines logo]()
$1,340
This IEagle deal was found by Cheapflights users on 5/8. 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 IEagle is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/94:46 pm
STL
- BKK
2 stops30h 24m
Multiple Airlines
Thu 5/144:45 pm
BKK
- STL
2 stops34h 31m
Multiple Airlines
Deal found 5/8![Multiple Airlines logo]()
$1,369
This oojo deal was found by Cheapflights users on 5/6. 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 5/94:46 pm
STL
- BKK
2 stops30h 24m
EVA Air
Fri 5/223:20 pm
BKK
- STL
2 stops35h 56m
EVA Air
Deal found 5/6![EVA Air logo]()
$1,399
This IEagle deal was found by Cheapflights users on 5/9. 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 IEagle is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/94:46 pm
STL
- BKK
2 stops30h 24m
Multiple Airlines
Wed 5/274:45 pm
BKK
- STL
2 stops34h 31m
Multiple Airlines
Deal found 5/9![Multiple Airlines logo]()
$1,458
This China Airlines deal was found by Cheapflights users on 5/9. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/94:46 pm
STL
- BKK
2 stops31h 24m
Multiple Airlines
Sat 5/162:40 am
BKK
- STL
2 stops34h 35m
Multiple Airlines
Deal found 5/9![Multiple Airlines logo]()
$1,463
This Ovago deal was found by Cheapflights users on 5/7. 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 5/117:00 am
STL
- BKK
2 stops28h 00m
Multiple Airlines
Tue 5/121:20 am
BKK
- STL
2 stops34h 34m
Multiple Airlines
Deal found 5/7![Multiple Airlines logo]()
$1,467
This oojo deal was found by Cheapflights users on 5/8. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/127:00 am
STL
- BKK
2 stops39h 25m
EVA Air
Thu 5/144:45 pm
BKK
- STL
2 stops34h 31m
EVA Air
Deal found 5/8![EVA Air logo]()
$1,420
This Justfly.com deal was found by Cheapflights users on 5/6. 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 5/135:21 pm
STL
- BKK
2 stops48h 09m
Finnair
Wed 7/157:05 am
BKK
- STL
2 stops47h 28m
Finnair
Deal found 5/6![Finnair logo]()
$1,421
This KAYAK deal was found by Cheapflights users on 5/8. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/276:00 am
STL
- BKK
2 stops29h 20m
Multiple Airlines
Wed 6/38:00 am
BKK
- STL
2 stops27h 54m
Multiple Airlines
Deal found 5/8![Multiple Airlines logo]()
$1,413
This IEagle deal was found by Cheapflights users on 5/5. 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 IEagle is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/49:26 am
STL
- BKK
2 stops33h 24m
Qatar Airways
Wed 6/102:30 am
BKK
- STL
2 stops33h 46m
Qatar Airways
Deal found 5/5![Qatar Airways logo]()
$1,470
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 May 10, 2026.
Search for one-way flight options from St. Louis to Bangkok. Find affordable one-way fares based on user searches. Data last updated May 10, 2026.
This Kiwi.com deal was found by Cheapflights users on 5/6. 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 9/18:08 pm
STL
- BKK
3 stops48h 47m
Multiple Airlines
Deal found 5/6![Multiple Airlines logo]()
$535
This Kiwi.com deal was found by Cheapflights users on 5/7. 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 7/84:52 pm
STL
- BKK
3 stops55h 18m
Multiple Airlines
Deal found 5/7![Multiple Airlines logo]()
$685
This Kiwi.com deal was found by Cheapflights users on 5/7. 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 7/78:08 pm
STL
- BKK
3 stops37h 02m
Multiple Airlines
Deal found 5/7![Multiple Airlines logo]()
$723
This Delta deal was found by Cheapflights users on 5/7. 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 7/76:30 am
STL
- BKK
2 stops30h 35m
Delta
Deal found 5/7![Delta logo]()
$761
This Delta deal was found by Cheapflights users on 5/7. 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 7/67:55 pm
STL
- BKK
2 stops41h 10m
Delta
Deal found 5/7![Delta logo]()
$772
This Trip.com deal was found by Cheapflights users on 5/8. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/18:08 pm
STL
- BKK
3 stops37h 02m
Multiple Airlines
Deal found 5/8![Multiple Airlines logo]()
$795
This Kiwi.com deal was found by Cheapflights users on 5/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/156:21 am
STL
- BKK
3 stops29h 49m
Multiple Airlines
Deal found 5/8![Multiple Airlines logo]()
$828
This Kiwi.com deal was found by Cheapflights users on 5/7. 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 7/63:34 pm
STL
- BKK
3 stops40h 56m
Multiple Airlines
Deal found 5/7![Multiple Airlines logo]()
$840
This FlightHub deal was found by Cheapflights users on 5/6. 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 7/16:35 am
STL
- BKK
2 stops36h 40m
Qatar Airways
Deal found 5/6![Qatar Airways logo]()
$923
This FlightHub deal was found by Cheapflights users on 5/8. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/156:35 am
STL
- BKK
2 stops48h 50m
Qatar Airways
Deal found 5/8![Qatar Airways logo]()
$947
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 May 10, 2026.
Round-trip from | $998 (Fareboom) |
|---|---|
One-way from | $535 (Kiwi.com) |
Popular in | December |
Cheapest in | February |
Average price | $1,342 |
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 May 10, 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
Sun 10/11
9:47 am-6:15 am
2 stops32h 28m
Bangkok Suvarnabhumi
Sat 10/24
9:00 pm-8:08 pm
2 stops35h 08m
$1,098
St. LouisBangkok
STL - BKK
STLBKK
Lambert-St Louis
Thu 9/3
6:00 am-11:50 pm
2 stops29h 50m
Bangkok Suvarnabhumi
Mon 9/14
9:00 pm-2:59 pm
2 stops29h 59m
$1,099
St. LouisBangkok
STL - BKK
STLBKK
Lambert-St Louis
Sat 8/15
1:25 pm-11:50 am
2 stops34h 25m
Bangkok Suvarnabhumi
Sat 8/29
3:15 am-11:59 pm
2 stops32h 44m
$1,158
St. LouisBangkok
STL - BKK
STLBKK
Lambert-St Louis
Sat 8/8
5:23 am-11:50 pm
2 stops30h 27m
Bangkok Suvarnabhumi
Wed 8/19
8:45 pm-5:34 pm
2 stops32h 49m
$1,239
St. LouisBangkok
STL - BKK
STLBKK
Lambert-St Louis
Wed 9/30
1:27 pm-9:35 am
3 stops32h 08m
Bangkok Suvarnabhumi
Tue 11/17
9:10 am-10:54 pm
2 stops26h 44m
$1,544
St. LouisBangkok
STL - BKK
STLBKK
Lambert-St Louis
Sun 11/1
4:00 pm-9:50 am
3 stops28h 50m
Bangkok Suvarnabhumi
Sun 11/8
2:05 pm-2:26 pm
2 stops37h 21m
$1,579
St. LouisBangkok
STL - BKK
STLBKK
Lambert-St Louis
Sun 11/1
1:30 pm-11:25 am
3 stops32h 55m
Bangkok Suvarnabhumi
Wed 11/11
4:55 pm-10:27 am
3 stops30h 32m
$1,595
Quickest round-trip
St. LouisBangkok
STL - BKK
STLBKK
Lambert-St Louis
Sat 10/10
7:00 am-11:55 pm
2 stops28h 55m
Bangkok Suvarnabhumi
Tue 11/10
4:55 pm-9:42 am
3 stops29h 47m
$1,598
Cheapest one-way
St. LouisBangkok
STL - BKK
STLBKK
Lambert-St Louis
Tue 9/1
3:00 pm-8:55 am
2 stops29h 55m
$540
St. LouisBangkok
STL - BKK
STLBKK
Lambert-St Louis
Wed 7/8
4:52 pm-12:10 pm
3 stops55h 18m
$685
Showing 1-10 of 16 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?
Booking 9 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 $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?
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 May 10, 2026.
Get a feel of what it's like to fly with Japan Airlines,ANA, 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.
Boarding
8.4
Comfort
8.2
Food
7.7
Crew
8.7
Overall
8.3
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentNymo,Nov 2025
NRT - BKK
Boarding
8.4
Comfort
8.2
Food
7.7
Crew
8.7
Overall
8.3
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentNymo,Nov 2025
NRT - BKK
Boarding
8.4
Comfort
8.2
Food
7.7
Crew
8.7
Overall
8.3
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentNymo,Nov 2025
NRT - BKK
Boarding
8.4
Comfort
8.2
Food
7.7
Crew
8.7
Overall
8.3
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentNymo,Nov 2025
NRT - BKK
Boarding
8.4
Comfort
8.2
Food
7.7
Crew
8.7
Overall
8.3
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentNymo,Nov 2025
NRT - BKK
Boarding
8.4
Comfort
8.2
Food
7.7
Crew
8.7
Overall
8.3
Entertainment
7.8
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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St. Louis and Bangkok flights
Browse other St. Louis and Bangkok flight options. Last updated on May 10, 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 May 10, 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 May 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$881 | Average$1,248 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$929 | Average$1,087 | FlexibilityNo cancel fee | On-time79% | |
| Cheapest$954 | Average$1,278 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$974 | Average$1,299 | FlexibilityNo cancel fee | On-time72% | |
| Cheapest$983 | Average$1,247 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$1,007 | Average$1,260 | FlexibilityNo cancel fee | On-time80% | |
| Cheapest$1,094 | Average$1,226 | FlexibilityNo cancel fee | On-time68% |