Thailand (ภาษาไทย)
ภาษาไทย

฿5,129+ Cheap flights from St. Louis

This is the cheapest return flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/11. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
STL — BKK
14 Nov — 21 Nov1
1 adult
1 adult, Economy

What to know about flights from St. Louis

Discover essential information about flights departing from St. Louis, including flight schedules, destinations, airlines operating at the St. Louis airport, and any specific guidelines or requirements for travellers. Please note that the information is based on the most recent updates available. Data last updated 15 October 2025.

Good one-way deal

฿15,679 or less
Price to beat on a one-way flight from Lambert-St Louis.
Search Deals

Find flights from St. Louis

Enter your travel dates to find the best prices.

Cheapest flights from St. Louis
Explore the most affordable flight options available from St. Louis. Find the lowest fares based on data from user searches, with prices last updated on 15 October 2025.

Thu 13/1116:14STL - BKK
2 stops31h 21mMultiple Airlines
Mon 24/1113:45BKK - STL
2 stops23h 09mMultiple Airlines
Deal found 15/10฿27,571
Wed 5/1107:00STL - BKK
2 stops44h 30mMultiple Airlines
Wed 12/1117:40BKK - STL
2 stops43h 19mMultiple Airlines
Deal found 12/10฿27,734
Mon 10/1107:00STL - BKK
2 stops44h 30mMultiple Airlines
Fri 14/1113:45BKK - STL
2 stops23h 14mMultiple Airlines
Deal found 14/10฿27,832
Wed 18/214:55STL - BKK
2 stops36h 35mMultiple Airlines
Thu 26/213:45BKK - STL
2 stops23h 11mMultiple Airlines
Deal found 13/10฿28,257
Sun 2/1107:00STL - BKK
2 stops44h 30mMultiple Airlines
Sun 16/1117:40BKK - STL
2 stops43h 19mMultiple Airlines
Deal found 13/10฿28,616
Mon 2/314:55STL - BKK
2 stops32h 40mMultiple Airlines
Mon 9/313:45BKK - STL
2 stops36h 07mMultiple Airlines
Deal found 14/10฿28,714
Wed 7/114:50STL - BKK
2 stops36h 40mMultiple Airlines
Wed 4/317:40BKK - STL
2 stops43h 16mMultiple Airlines
Deal found 14/10฿29,073
Tue 11/1107:00STL - BKK
2 stops44h 30mMultiple Airlines
Tue 18/1113:45BKK - STL
2 stops38h 33mMultiple Airlines
Deal found 14/10฿29,237
Mon 23/206:30STL - BKK
2 stops27h 50mเดลต้า
Mon 23/300:55BKK - STL
2 stops35h 42mเดลต้า
Deal found 15/10฿29,335
Sun 22/217:30STL - BKK
2 stops42h 15mเดลต้า
Tue 24/309:40BKK - STL
2 stops26h 57mเดลต้า
Deal found 15/10฿29,531
Sat 1/1107:00STL - BKK
2 stops45h 30mMultiple Airlines
Thu 13/1117:40BKK - STL
2 stops43h 19mMultiple Airlines
Deal found 14/10฿30,184
Fri 27/206:45STL - BKK
2 stops27h 35mเดลต้า
Wed 25/309:40BKK - STL
2 stops26h 00mเดลต้า
Deal found 15/10฿30,445

Find flights from St. Louis within your budget

 
Find flights departing from St. Louis that match your specified budget. Filter results by price range, allowing you to narrow down options and find flights that fit within your financial constraints. Please note that the search results are based on data from user searches, with fares last updated on 15 October 2025. In the last 7 days, Cheapflights users made a total of 17,341 searches

Fly to

Suvarnabhumi

Route

Depart

Return

Price

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Thu 26/2

07:00-00:45

2 stops28h 45m

Bangkok Suvarnabhumi

Wed 25/3

09:40-23:40

2 stops26h 00m

฿29,335

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Mon 23/2

06:00-00:45

2 stops29h 45m

Bangkok Suvarnabhumi

Wed 25/3

09:40-23:40

2 stops26h 00m

฿29,335

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Wed 25/2

06:30-23:20

2 stops27h 50m

Bangkok Suvarnabhumi

Tue 24/3

09:40-00:37

2 stops26h 57m

฿29,335

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Sat 28/2

06:45-00:45

2 stops29h 00m

Bangkok Suvarnabhumi

Wed 25/3

09:40-23:40

2 stops26h 00m

฿30,445

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Thu 8/1

06:45-00:45

2 stops29h 00m

Bangkok Suvarnabhumi

Thu 12/2

09:40-23:40

2 stops27h 00m

฿31,948

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Wed 18/2

06:45-00:45

2 stops29h 00m

Bangkok Suvarnabhumi

Wed 25/2

00:55-23:10

2 stops35h 15m

฿31,948

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Mon 8/12

06:30-00:45

2 stops29h 15m

Bangkok Suvarnabhumi

Mon 30/3

09:50-17:59

2 stops44h 09m

฿32,209

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Sun 7/12

19:02-00:45

2 stops40h 43m

Bangkok Suvarnabhumi

Mon 30/3

09:50-17:59

2 stops44h 09m

฿32,405

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Wed 25/2

06:30-00:45

2 stops29h 15m

Bangkok Suvarnabhumi

Sat 7/3

00:55-23:37

2 stops35h 42m

฿32,471

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Mon 23/2

07:41-11:25

3 stops38h 44m

Bangkok Suvarnabhumi

Wed 25/3

16:55-09:24

3 stops28h 29m

฿32,601

Flights are sorted by cheapest return flights first.

Deals found on 14/10

Showing 1-10 of 38 results
1
2
3
4

Best time to book a flight from St. Louis

Have a flexible travel schedule? Discover the best time to fly from St. Louis with our price prediction graph.
Estimated return 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.

Travel insights for flights from St. Louis

Get recent, data-driven insights about flights from St. Louis including ideal travel times, pricing trends, and more.

When is the best time to book a flight from St. Louis?

Use this chart to determine the optimal time to book a return flight from St. Louis to Suvarnabhumi. Price data was last updated on 10 October 2025.

Booking 78 days in advance of your planned departure date is, on average, the best time to get cheap flights from St. Louis. 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?

Currently, August is the cheapest month in which you can book a flight from St. Louis (average of ฿31,458). Flying from St. Louis in June will prove the most costly (average of ฿41,258). There are multiple factors that influence the price of a flight so comparing airlines, departure airports and times can help keep costs down.

What are popular destinations to fly to from St. Louis?

If you’re flying from St. Louis, these routes are more frequently taken by airlines Chicago (951 flights per day), Atlanta (262 flights per day) and Dallas (212 flights per day).

Houston Hobby
Houston Hobby
From ฿15,679

What is the cheapest place to fly to from St. Louis?

The cheapest city to fly to from St. Louis is Houston Hobby, with prices starting at ฿15,679. Explore other affordable destinations below.

Houston Hobby
Houston Hobby
From ฿15,679

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.

Direct flights from Missouri

Book a direct flight from one of these other cities located in Missouri.
Direct flights from Kansas City

Related info for your journey

Access useful and relevant information related to your journey from St. Louis. This can include details such as airport transportation, visa requirements, travel insurance, luggage regulations, and any other information that can ensure a smooth and hassle-free travel experience. Please note that the information is based on general guidance and may need to be verified with official sources. Data last updated 15 October 2025.

  • What are the most popular destinations to fly to from St. Louis?

    The most selected flight destinations from St. Louis for the current month are Denver, Boston, Atlanta. While Denver, Cancún, Atlanta are the top choices made by travellers year-round.

  • What is the cheapest flight from St. Louis to anywhere?

    Users have flown out of St. Louis for as low as ฿15,679 to Houston George Bush Intcntl Airport (prices may vary depending on the airline and departure time). On average, users have booked flights for ฿15,679 to fly from St. Louis.

  • What is the cheapest month to fly from St. Louis?

    At the present moment the cheapest month to fly from St. Louis is currently August; with June being the most expensive. Prices will vary depending on multiple factors such as booking in advance, airline and departure airports and times.

  • How does Cheapflights help users find flights from St. Louis?

    Cheapflights helps you search for flights from St. Louis via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

  • Why should you use Cheapflights to find cheap flight tickets from St. Louis?

    Millions of users choose and trust Cheapflights to book the best flight deals from St. Louis for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

  • Can Cheapflights find flights from St. Louis with no change fees?

    Cheapflights does show flights with no change fees to all users. To see these options for flights from St. Louis, users can toggle the no change fees filter when performing a flight search.

  • Can Cheapflights notify me if prices for flights from St. Louis become cheaper?

    Yes, Cheapflights offers price alerts on flights from St. Louis so you can book your travels when it’s right. The Price Alerts feature is available by clicking the bell icon next to the flight deals above and providing your email address.

See more FAQs

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from St. Louis?

Cheapflights helps you search for flights from St. Louis via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from St. Louis?

Millions of users choose and trust Cheapflights to book the best flight deals from St. Louis for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from St. Louis with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from St. Louis, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from St. Louis become cheaper?

Yes, Cheapflights offers price alerts on flights from St. Louis so you can book your travels when it’s right. The Price Alerts feature is available by clicking the bell icon next to the flight deals above and providing your email address.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.