Thailand (ภาษาไทย)
ภาษาไทย

฿4,640+ 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 24/1. 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
4 Jan — 11 Jan1
1 adult
1 adult, Economy, 0 bags

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 5 December 2025.

Mon 19/106:30STL - BKK
2 stops33h 40mANA
Mon 26/122:25BKK - STL
2 stops30h 27mANA
Deal found 5/12฿28,257
Mon 19/106:00STL - BKK
2 stops34h 10mUnited Airlines
Mon 26/109:10BKK - STL
2 stops43h 42mUnited Airlines
Deal found 4/12฿28,321
Tue 20/108:05STL - BKK
3 stops38h 20mUnited Airlines
Thu 5/216:55BKK - STL
3 stops32h 34mUnited Airlines
Deal found 3/12฿28,801
Wed 25/206:00STL - BKK
2 stops29h 45mเดลต้า
Sat 7/303:05BKK - STL
2 stops30h 05mเดลต้า
Deal found 5/12฿29,953
Tue 20/111:20STL - BKK
2 stops30h 10mANA
Thu 5/214:25BKK - STL
2 stops35h 04mANA
Deal found 3/12฿30,145
Thu 29/111:20STL - BKK
3 stops35h 05mUnited Airlines
Mon 2/216:55BKK - STL
3 stops29h 27mUnited Airlines
Deal found 4/12฿30,177
Wed 4/207:04STL - HKT
2 stops45h 31mCathay Pacific
Wed 11/218:35HKT - STL
2 stops36h 27mCathay Pacific
Deal found 4/12฿30,305
Tue 21/414:55STL - BKK
2 stops33h 15mChina Airlines
Sun 26/402:40BKK - STL
2 stops47h 31mChina Airlines
Deal found 5/12฿30,529
Sun 18/106:00STL - BKK
2 stops29h 20mUnited Airlines
Sun 25/107:10BKK - STL
2 stops27h 50mUnited Airlines
Deal found 4/12฿30,689
Mon 30/310:02STL - HKT
2 stops48h 08mเดลต้า
Wed 15/423:25HKT - STL
2 stops44h 42mเดลต้า
Deal found 4/12฿31,361
Tue 21/408:26STL - BKK
2 stops43h 04mANA
Wed 20/513:55BKK - STL
2 stops36h 23mANA
Deal found 4/12฿31,393
Wed 4/207:04STL - HKT
2 stops39h 16mMultiple Airlines
Wed 11/212:20HKT - STL
2 stops24h 39mMultiple Airlines
Deal found 4/12฿31,553

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 5 December 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

Mon 19/1

06:00-05:10

2 stops34h 10m

Bangkok Suvarnabhumi

Mon 26/1

09:10-15:52

2 stops43h 42m

฿28,321

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Tue 20/1

08:05-11:25

3 stops38h 20m

Bangkok Suvarnabhumi

Thu 5/2

16:55-12:29

3 stops32h 34m

฿28,801

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Wed 25/2

06:00-00:45

2 stops29h 45m

Bangkok Suvarnabhumi

Sat 7/3

03:05-22:42

2 stops32h 37m

฿29,953

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Thu 29/1

11:20-11:25

3 stops35h 05m

Bangkok Suvarnabhumi

Mon 2/2

16:55-09:22

3 stops29h 27m

฿30,177

St. LouisPhuket City

STL - HKT

STLHKT

Lambert-St Louis

Wed 4/2

07:04-17:35

2 stops45h 31m

Phuket City

Wed 11/2

18:35-18:02

2 stops36h 27m

฿30,305

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Sun 18/1

06:00-00:20

2 stops29h 20m

Bangkok Suvarnabhumi

Sun 25/1

07:10-22:00

2 stops27h 50m

฿30,689

St. LouisPhuket City

STL - HKT

STLHKT

Lambert-St Louis

Mon 30/3

10:02-22:10

2 stops48h 08m

Phuket City

Wed 15/4

23:25-08:07

2 stops44h 42m

฿31,361

St. LouisPhuket City

STL - HKT

STLHKT

Lambert-St Louis

Tue 31/3

06:00-22:10

2 stops28h 10m

Phuket City

Wed 15/4

23:25-08:07

2 stops44h 42m

฿31,361

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Tue 21/4

10:09-09:45

3 stops35h 36m

Bangkok Suvarnabhumi

Wed 20/5

09:35-14:18

2 stops40h 43m

฿31,585

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Wed 15/4

08:30-09:45

2 stops37h 15m

Bangkok Suvarnabhumi

Wed 20/5

09:35-16:35

2 stops43h 00m

฿31,713

Flights are sorted by cheapest return flights first.

Deals found on 4/12

Showing 1-10 of 36 results
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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 28 November 2025.

Booking 25 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 ฿30,817). Flying from St. Louis in June will prove the most costly (average of ฿40,418). There are multiple factors that influence the price of a flight so comparing airlines, departure airports and times can help keep costs down.

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Direct flights from Missouri

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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 5 December 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, Cancún, Atlanta. While Denver, Cancún, Atlanta are the top choices made by travellers year-round.

  • 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.

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