Thailand (ภาษาไทย)
ภาษาไทย

฿5,060+ 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 18/10. 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
6 Sep — 13 Sep1
1 adult

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 1 September 2025.

Good one-way deal

฿15,470 or less
Price to beat on a one-way flight from Lambert-St Louis.
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Find flights from St. Louis

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 1 September 2025.

Tue 7/1005:20STL - BKK
2 stops29h 40mAmerican Airlines
Tue 21/1008:05BKK - STL
2 stops24h 48mAmerican Airlines
Deal found 31/8฿29,491
Wed 7/115:36STL - BKK
2 stops24h 29mJapan Airlines
Tue 3/301:10BKK - STL
2 stops34h 58mJapan Airlines
Deal found 30/8฿30,942
Mon 6/1020:05STL - BKK
2 stops31h 05mJapan Airlines
Tue 4/1108:05BKK - STL
2 stops21h 42mJapan Airlines
Deal found 31/8฿31,135
Thu 11/909:56STL - BKK
2 stops25h 54mCathay Pacific
Mon 15/911:00BKK - STL
2 stops23h 50mCathay Pacific
Deal found 1/9฿31,328
Tue 14/1006:39STL - HKT
2 stops40h 11mCathay Pacific
Tue 21/1011:50HKT - STL
2 stops47h 36mCathay Pacific
Deal found 30/8฿31,328
Tue 7/1006:00STL - BKK
2 stops31h 05mเดลต้า
Mon 20/1002:35BKK - STL
2 stops31h 29mเดลต้า
Deal found 31/8฿31,522
Mon 22/908:40STL - CNX
2 stops25h 15mเดลต้า
Wed 1/1023:15CNX - STL
2 stops29h 22mเดลต้า
Deal found 31/8฿31,522
Sun 19/1020:05STL - HKT
2 stops50h 45mCathay Pacific
Sun 26/1018:35HKT - STL
2 stops41h 19mCathay Pacific
Deal found 30/8฿31,522
Sun 28/906:00STL - BKK
2 stops29h 10mMultiple Airlines
Sun 5/1011:55BKK - STL
2 stops48h 08mMultiple Airlines
Deal found 29/8฿31,619
Thu 29/106:30STL - BKK
2 stops33h 40mUnited Airlines
Wed 18/209:10BKK - STL
2 stops24h 54mUnited Airlines
Deal found 30/8฿31,715
Wed 28/114:45STL - BKK
3 stops31h 40mUnited Airlines
Wed 18/209:10BKK - STL
2 stops23h 15mUnited Airlines
Deal found 30/8฿31,812
Mon 2/217:00STL - BKK
2 stops29h 25mUnited Airlines
Wed 18/209:10BKK - STL
2 stops24h 54mUnited Airlines
Deal found 30/8฿31,941

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 1 September 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

Tue 7/10

05:20-23:00

2 stops29h 40m

Bangkok Suvarnabhumi

Tue 21/10

08:05-20:53

2 stops24h 48m

฿29,491

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Wed 7/1

15:36-05:05

2 stops24h 29m

Bangkok Suvarnabhumi

Tue 3/3

01:10-23:08

2 stops34h 58m

฿30,942

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Mon 6/10

20:05-15:10

2 stops31h 05m

Bangkok Suvarnabhumi

Tue 4/11

08:05-16:47

2 stops21h 42m

฿31,135

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Thu 11/9

09:56-23:50

2 stops25h 54m

Bangkok Suvarnabhumi

Mon 15/9

11:00-22:50

2 stops23h 50m

฿31,328

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Thu 20/11

07:00-10:40

2 stops38h 40m

Bangkok Suvarnabhumi

Wed 26/11

13:05-16:25

2 stops40h 20m

฿31,328

St. LouisPhuket City

STL - HKT

STLHKT

Lambert-St Louis

Tue 14/10

06:39-10:50

2 stops40h 11m

Phuket City

Tue 21/10

11:50-23:26

2 stops47h 36m

฿31,328

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Tue 3/2

06:00-23:20

2 stops28h 20m

Bangkok Suvarnabhumi

Wed 11/2

00:55-23:10

2 stops35h 15m

฿31,522

St. LouisChiang Mai

STL - CNX

STLCNX

Lambert-St Louis

Mon 22/9

08:40-21:55

2 stops25h 15m

Chiang Mai

Wed 1/10

23:15-23:24

2 stops36h 09m

฿31,522

St. LouisPhuket City

STL - HKT

STLHKT

Lambert-St Louis

Sun 19/10

20:05-10:50

2 stops50h 45m

Phuket City

Sun 26/10

18:35-23:54

2 stops41h 19m

฿31,522

St. LouisPhuket City

STL - HKT

STLHKT

Lambert-St Louis

Sun 22/2

14:55-21:35

2 stops41h 40m

Phuket City

Sat 28/2

22:55-23:56

2 stops38h 01m

฿33,004

Flights are sorted by cheapest return flights first.

Deals found on 31/8

Showing 1-10 of 28 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 29 August 2025.

Booking 60 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 ฿31,200). Flying from St. Louis in June will prove the most costly (average of ฿40,708). 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 (743 flights per day), Atlanta (193 flights per day) and Dallas (147 flights per day).

Houston Hobby
Houston Hobby
From ฿480

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 ฿15,470. Explore other affordable destinations below.

Houston Hobby
Houston Hobby
From ฿480

Browse thousands of different options on Cheapflights for your next trip

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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 1 September 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 Boston, Athens, Cancún. While Cancún, Boston, 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 ฿15,470 to Houston George Bush Intcntl Airport (prices may vary depending on the airline and departure time). On average, users have booked flights for ฿15,470 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.

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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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