$474+ 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 9/16. Fares are subject to change and may not be available on all flights or dates of travel.
STL — BKK
Sep 26 — Oct 31
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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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from St. Louis to Bangkok
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Best
Last-minute
One-way
Cheapest flights from St. Louis to BangkokExplore the most affordable flight options available from St. Louis to Bangkok. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 27, 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 August 27, 2026.
This Etihad Airways deal was found by Cheapflights users on 8/24. 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 10/125:00 am -
2 stops30h 55m
Wed 10/213:55 pm -
2 stops32h 40m
Deal found 8/24![Multiple Airlines logo]()
$1,037
This Etihad Airways deal was found by Cheapflights users on 8/27. 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 9/26:54 am -
2 stops30h 01m
Sat 9/193:55 pm -
2 stops33h 21m
Deal found 8/27![Multiple Airlines logo]()
$1,038
This Booking.com deal was found by Cheapflights users on 8/26. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/266:50 pm -
2 stops32h 00m
Mon 11/912:15 pm -
2 stops46h 20m
Deal found 8/26![Multiple Airlines logo]()
$1,070
This oojo deal was found by Cheapflights users on 8/25. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/71:06 pm -
2 stops35h 04m
Wed 10/143:55 pm -
2 stops44h 24m
Deal found 8/25![Etihad Airways logo]()
$1,091
This Etihad Airways deal was found by Cheapflights users on 8/25. 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 Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/171:06 pm -
2 stops35h 04m
Sun 10/252:40 pm -
2 stops34h 20m
Deal found 8/25![Multiple Airlines logo]()
$1,095
This Trip.com deal was found by Cheapflights users on 8/27. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/2612:17 pm -
3 stops34h 23m
Fri 10/21:35 am -
3 stops44h 00m
Deal found 8/27![Multiple Airlines logo]()
$1,107
This oojo deal was found by Cheapflights users on 8/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/78:48 am -
2 stops34h 47m
Tue 10/133:00 am -
2 stops29h 57m
Deal found 8/27![Qatar Airways logo]()
$1,123
This Justfly.com deal was found by Cheapflights users on 8/27. 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 10/287:02 am -
2 stops42h 03m
Tue 11/103:00 am -
2 stops28h 17m
Deal found 8/27![Qatar Airways logo]()
$1,126
This oojo deal was found by Cheapflights users on 8/25. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/11:20 pm -
2 stops45h 15m
Sun 11/89:50 am -
2 stops62h 02m
Deal found 8/25![Japan Airlines logo]()
$1,128
This oojo deal was found by Cheapflights users on 8/23. 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 10/285:27 pm -
2 stops42h 08m
Wed 11/117:55 am -
2 stops39h 57m
Deal found 8/23![Japan Airlines logo]()
$1,137
This FlightHub deal was found by Cheapflights users on 8/27. 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 9/1911:01 am -
2 stops31h 19m
Fri 10/23:00 am -
2 stops29h 44m
Deal found 8/27![Qatar Airways logo]()
$1,140
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 August 27, 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 August 27, 2026.
This Delta deal was found by Cheapflights users on 8/24. 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 12/17:08 am -
2 stops25h 22m
Thu 12/109:40 am -
2 stops24h 58m
Deal found 8/24![Delta logo]()
$1,150
This United Airlines deal was found by Cheapflights users on 8/25. 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.
Mon 11/21:40 pm -
3 stops32h 50m
Thu 11/129:10 am -
2 stops21h 59m
Deal found 8/25![United Airlines logo]()
$1,159
This Expedia deal was found by Cheapflights users on 8/27. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/1411:23 am -
2 stops47h 12m
Sun 11/227:55 am -
2 stops39h 39m
Deal found 8/27![Japan Airlines logo]()
$1,202
This United Airlines deal was found by Cheapflights users on 8/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/288:50 am -
3 stops38h 40m
Wed 11/119:10 am -
2 stops27h 14m
Deal found 8/24![United Airlines logo]()
$1,159
This Delta deal was found by Cheapflights users on 8/24. 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 11/307:18 pm -
2 stops37h 12m
Fri 12/119:40 am -
2 stops24h 58m
Deal found 8/24![Delta logo]()
$1,200
This United Airlines deal was found by Cheapflights users on 8/25. 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.
Tue 9/223:32 pm -
3 stops30h 03m
Wed 10/77:00 am -
2 stops25h 16m
Deal found 8/25![United Airlines logo]()
$1,161
This United Airlines deal was found by Cheapflights users on 8/24. 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 11/296:50 pm -
2 stops39h 00m
Wed 12/97:10 am -
2 stops22h 43m
Deal found 8/24![United Airlines logo]()
$1,165
This United Airlines deal was found by Cheapflights users on 8/24. 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 11/296:50 pm -
2 stops39h 00m
Thu 12/104:55 pm -
3 stops29h 45m
Deal found 8/24![United Airlines logo]()
$1,178
This United Airlines deal was found by Cheapflights users on 8/27. 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 9/185:30 pm -
3 stops28h 05m
Sun 10/49:35 am -
2 stops38h 38m
Deal found 8/27![United Airlines logo]()
$1,209
This United Airlines deal was found by Cheapflights users on 8/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/141:36 pm -
3 stops31h 59m
Sat 9/197:00 am -
2 stops25h 47m
Deal found 8/26![United Airlines logo]()
$1,211
This United Airlines deal was found by Cheapflights users on 8/27. 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.
Sat 11/144:39 pm -
3 stops29h 51m
Tue 11/244:55 pm -
3 stops30h 07m
Deal found 8/27![United Airlines logo]()
$1,219
Last-minute flights from St. Louis to BangkokDiscover last-minute flight deals from St. Louis to Bangkok. Data last updated August 27, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Bangkok. Data last updated August 27, 2026 and is based on user searches.
This Etihad Airways deal was found by Cheapflights users on 8/27. 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 9/26:54 am -
2 stops30h 01m
Sat 9/193:55 pm -
2 stops33h 21m
Deal found 8/27![Multiple Airlines logo]()
$1,038
This United Airlines deal was found by Cheapflights users on 8/27. 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.
Wed 9/212:59 pm -
3 stops32h 36m
Sat 9/193:45 pm -
3 stops30h 27m
Deal found 8/27![United Airlines logo]()
$1,219
This United Airlines deal was found by Cheapflights users on 8/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/36:59 pm -
3 stops26h 36m
Mon 9/149:35 am -
2 stops47h 12m
Deal found 8/26![United Airlines logo]()
$1,155
This United Airlines deal was found by Cheapflights users on 8/27. 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.
Thu 9/1010:53 am -
3 stops34h 42m
Thu 9/177:00 am -
2 stops27h 30m
Deal found 8/27![United Airlines logo]()
$1,161
This China Airlines deal was found by Cheapflights users on 8/23. 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.
Thu 9/106:25 am -
3 stops39h 20m
Thu 9/175:30 pm -
2 stops42h 25m
Deal found 8/23![Multiple Airlines logo]()
$1,254
This FlightHub deal was found by Cheapflights users on 8/27. 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.
Fri 9/1811:01 am -
2 stops32h 34m
Sat 10/32:30 am -
2 stops30h 14m
Deal found 8/27![Qatar Airways logo]()
$1,149
This United Airlines deal was found by Cheapflights users on 8/27. 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 9/185:30 pm -
3 stops28h 05m
Sun 10/49:35 am -
2 stops38h 38m
Deal found 8/27![United Airlines logo]()
$1,209
This FlightHub deal was found by Cheapflights users on 8/27. 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 9/1911:01 am -
2 stops31h 19m
Fri 10/23:00 am -
2 stops29h 44m
Deal found 8/27![Qatar Airways logo]()
$1,140
This United Airlines deal was found by Cheapflights users on 8/23. 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 9/225:30 pm -
3 stops28h 05m
Wed 10/79:35 am -
2 stops45h 08m
Deal found 8/23![United Airlines logo]()
$1,159
This Trip.com deal was found by Cheapflights users on 8/27. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/2612:17 pm -
3 stops34h 23m
Fri 10/21:35 am -
3 stops44h 00m
Deal found 8/27![Multiple Airlines logo]()
$1,107
This Japan Airlines deal was found by Cheapflights users on 8/26. 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 Japan Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/2711:01 am -
2 stops47h 59m
Wed 9/309:40 pm -
2 stops31h 08m
Deal found 8/26![Japan Airlines logo]()
$1,178
This United Airlines deal was found by Cheapflights users on 8/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/279:00 am -
3 stops36h 35m
Wed 9/307:00 am -
2 stops26h 21m
Deal found 8/26![United Airlines logo]()
$1,211
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 August 27, 2026.
Search for one-way flight options from St. Louis to Bangkok. Find affordable one-way fares based on user searches. Data last updated August 27, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/24. 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 9/168:10 pm -
3 stops51h 05m
Deal found 8/24![Multiple Airlines logo]()
$474
This Kiwi.com deal was found by Cheapflights users on 8/24. 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 9/308:10 pm -
3 stops52h 00m
Deal found 8/24![Multiple Airlines logo]()
$500
This Kiwi.com deal was found by Cheapflights users on 8/23. 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 10/196:35 pm -
2 stops53h 35m
Deal found 8/23![Multiple Airlines logo]()
$507
This Justfly.com deal was found by Cheapflights users on 8/26. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/41:06 pm -
2 stops34h 09m
Deal found 8/26![Qatar Airways logo]()
$549
This Etihad Airways deal was found by Cheapflights users on 8/27. 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 10/115:00 am -
2 stops30h 55m
Deal found 8/27![Multiple Airlines logo]()
$574
This China Airlines deal was found by Cheapflights users on 8/26. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/305:50 pm -
2 stops31h 15m
Deal found 8/26![Multiple Airlines logo]()
$585
This oojo deal was found by Cheapflights users on 8/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/67:29 am -
2 stops33h 46m
Deal found 8/27![Qatar Airways logo]()
$589
This oojo deal was found by Cheapflights users on 8/23. 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 1/1412:01 pm -
2 stops53h 34m
Deal found 8/23![Etihad Airways logo]()
$603
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 August 27, 2026.
Round-trip from | $1,037 (Etihad Airways) |
|---|---|
One-way from | $474 (Kiwi.com) |
Popular in | December |
Cheapest in | February |
Average price | $1,031 |
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 7,457,451 searches. Data last updated August 27, 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
Quickest round-trip
St. LouisBangkok
STL Lambert-St Louis - BKK Bangkok Suvarnabhumi
STLBKK
Lambert-St Louis
Tue 12/1
7:08 am-9:30 pm
2 stops25h 22m
Bangkok Suvarnabhumi
Thu 12/10
9:40 am-9:38 pm
2 stops24h 58m
$1,150
St. LouisBangkok
STL Lambert-St Louis - BKK Bangkok Suvarnabhumi
STLBKK
Lambert-St Louis
Mon 11/2
1:40 pm-11:30 am
3 stops32h 50m
Bangkok Suvarnabhumi
Thu 11/12
9:10 am-6:09 pm
2 stops21h 59m
$1,159
St. LouisBangkok
STL Lambert-St Louis - BKK Bangkok Suvarnabhumi
STLBKK
Lambert-St Louis
Wed 10/28
8:50 am-11:30 am
3 stops38h 40m
Bangkok Suvarnabhumi
Wed 11/11
9:10 am-11:24 pm
2 stops27h 14m
$1,159
St. LouisBangkok
STL Lambert-St Louis - BKK Bangkok Suvarnabhumi
STLBKK
Lambert-St Louis
Tue 9/22
3:32 pm-9:35 am
3 stops30h 03m
Bangkok Suvarnabhumi
Wed 10/7
7:00 am-8:16 pm
2 stops25h 16m
$1,161
St. LouisBangkok
STL Lambert-St Louis - BKK Bangkok Suvarnabhumi
STLBKK
Lambert-St Louis
Sun 11/29
6:50 pm-10:50 pm
2 stops39h 00m
Bangkok Suvarnabhumi
Wed 12/9
7:10 am-4:53 pm
2 stops22h 43m
$1,165
St. LouisBangkok
STL Lambert-St Louis - BKK Bangkok Suvarnabhumi
STLBKK
Lambert-St Louis
Sun 11/29
6:50 pm-10:50 pm
2 stops39h 00m
Bangkok Suvarnabhumi
Thu 12/10
4:55 pm-9:40 am
3 stops29h 45m
$1,178
St. LouisBangkok
STL Lambert-St Louis - BKK Bangkok Suvarnabhumi
STLBKK
Lambert-St Louis
Mon 11/30
7:18 pm-9:30 pm
2 stops37h 12m
Bangkok Suvarnabhumi
Fri 12/11
9:40 am-9:38 pm
2 stops24h 58m
$1,200
St. LouisBangkok
STL Lambert-St Louis - BKK Bangkok Suvarnabhumi
STLBKK
Lambert-St Louis
Sat 11/14
11:23 am-11:35 pm
2 stops47h 12m
Bangkok Suvarnabhumi
Sun 11/22
7:55 am-10:34 am
2 stops39h 39m
$1,202
St. LouisBangkok
STL Lambert-St Louis - BKK Bangkok Suvarnabhumi
STLBKK
Lambert-St Louis
Fri 9/18
5:30 pm-9:35 am
3 stops28h 05m
Bangkok Suvarnabhumi
Sun 10/4
9:35 am-12:13 pm
2 stops38h 38m
$1,209
St. LouisBangkok
STL Lambert-St Louis - BKK Bangkok Suvarnabhumi
STLBKK
Lambert-St Louis
Mon 9/14
1:36 pm-9:35 am
3 stops31h 59m
Bangkok Suvarnabhumi
Sat 9/19
7:00 am-8:47 pm
2 stops25h 47m
$1,211
Showing 1-10 of 19 resultsSorted by cheapest first
Best time to book a flight from St. Louis to Bangkok
Have a flexible travel schedule? Discover the best time to fly to Bangkok from St. Louis with our price prediction graph.
STL-TH1
STL-BKK
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from St. Louis to Bangkok
STL-TH1
STL-BKK
What is the cheapest month to book a flight from St. Louis to Bangkok?
Currently, February is the cheapest month in which you can book a flight from St. Louis to Bangkok (average of $1,023). Flying from St. Louis to Bangkok in December is currently the most expensive (average of $1,735). 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?
Airfare is below average for this route at the moment.
St. Louis to Bangkok flights typically cost between $1,242 and $1,504 in October.The cheapest round-trip price found within the last 5 days was $1,037 on Multiple Airlines (Oct 12-Oct 21).
How far ahead should I book a flight from St. Louis to Bangkok?
Booking 7 days in advance of your planned departure date is, on average, the best time to get cheap flights from St. Louis to Bangkok. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
Reviews of airlines servicing Bangkok
Get insights into the airlines that provide service to Bangkok. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Bangkok. Reviews last updated August 27, 2026.
Get a feel of what it's like to fly with Japan Airlines,Delta, andCathay Pacific from St. Louis to Bangkok by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
7.7
Overall
8.3
Crew
8.7
Comfort
8.2
Boarding
8.4
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentNymo,Nov 2025
NRT - BKK
Food
7.7
Overall
8.3
Crew
8.7
Comfort
8.2
Boarding
8.4
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentNymo,Nov 2025
NRT - BKK
Food
7.7
Overall
8.3
Crew
8.7
Comfort
8.2
Boarding
8.4
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentNymo,Nov 2025
NRT - BKK
Food
7.7
Overall
8.3
Crew
8.7
Comfort
8.2
Boarding
8.4
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentNymo,Nov 2025
NRT - BKK
Food
7.7
Overall
8.3
Crew
8.7
Comfort
8.2
Boarding
8.4
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentNymo,Nov 2025
NRT - BKK
Food
7.7
Overall
8.3
Crew
8.7
Comfort
8.2
Boarding
8.4
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentNymo,Nov 2025
NRT - BKK
Related info for your journey
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St. Louis and Bangkok flights
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Top 8 airlines flying from St. Louis to Bangkok
Discover the top 8 airlines that operate flights from St. Louis to Bangkok. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated August 27, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$881 | Average$1,259 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$929 | Average$1,045 | FlexibilityNo cancel fee | On-time79% | |
| Cheapest$946 | Average$1,204 | FlexibilityNo cancel fee | On-time68% | |
| Cheapest$948 | Average$1,242 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$974 | Average$1,386 | FlexibilityNo cancel fee | On-time72% | |
| Cheapest$982 | Average$1,249 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$990 | Average$1,411 | FlexibilityNo cancel fee | On-time80% | |
| Cheapest$1,048 | Average$1,456 | FlexibilityNo cancel fee | On-time74% |