Thailand (ภาษาไทย)
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฿5,063+ 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 10/12. 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
3 Dec — 10 Dec1
1 adult
1 adult, Economy, 0 bags

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 3 November 2025.

Good one-way deal

฿15,479 or less
Price to beat on a one-way flight from Lambert-St Louis.
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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 3 November 2025.

Mon 17/1116:14STL - BKK
2 stops35h 16mMultiple Airlines
Sun 23/1113:45BKK - STL
2 stops23h 09mMultiple Airlines
Deal found 1/11฿27,283
Sun 16/1107:00STL - BKK
2 stops44h 30mMultiple Airlines
Sun 23/1113:45BKK - STL
2 stops23h 09mMultiple Airlines
Deal found 1/11฿27,541
Mon 12/114:50STL - BKK
2 stops36h 40mMultiple Airlines
Wed 21/117:40BKK - STL
2 stops57h 14mMultiple Airlines
Deal found 2/11฿28,218
Wed 1/414:55STL - BKK
2 stops33h 05mMultiple Airlines
Thu 30/417:50BKK - STL
2 stops56h 21mMultiple Airlines
Deal found 2/11฿29,024
Thu 13/1107:00STL - BKK
2 stops44h 30mMultiple Airlines
Mon 24/1113:45BKK - STL
2 stops23h 09mMultiple Airlines
Deal found 2/11฿29,056
Sun 1/314:55STL - BKK
2 stops36h 35mMultiple Airlines
Sun 8/317:40BKK - STL
2 stops56h 12mMultiple Airlines
Deal found 2/11฿29,153
Mon 17/1116:14STL - BKK
2 stops35h 16mMultiple Airlines
Mon 24/1113:45BKK - STL
2 stops23h 09mMultiple Airlines
Deal found 3/11฿29,540
Sun 8/307:00STL - BKK
2 stops41h 35mMultiple Airlines
Sun 15/317:40BKK - STL
2 stops56h 12mMultiple Airlines
Deal found 2/11฿30,217
Thu 12/214:55STL - BKK
2 stops36h 35mMultiple Airlines
Wed 18/217:40BKK - STL
2 stops43h 16mMultiple Airlines
Deal found 3/11฿30,346
Thu 29/114:50STL - BKK
2 stops36h 40mMultiple Airlines
Thu 12/213:45BKK - STL
2 stops23h 11mMultiple Airlines
Deal found 1/11฿30,379
Fri 13/211:25STL - BKK
2 stops32h 15mMultiple Airlines
Tue 24/223:15BKK - STL
2 stops33h 04mMultiple Airlines
Deal found 1/11฿30,540
Thu 27/1107:00STL - BKK
2 stops40h 35mMultiple Airlines
Wed 10/1217:40BKK - STL
2 stops43h 19mMultiple Airlines
Deal found 2/11฿30,637

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 3 November 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 12/1

14:50-16:30

2 stops36h 40m

Bangkok Suvarnabhumi

Wed 21/1

17:40-13:54

2 stops57h 14m

฿28,218

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Fri 13/2

11:25-08:40

2 stops32h 15m

Bangkok Suvarnabhumi

Tue 24/2

23:15-19:19

2 stops33h 04m

฿30,540

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Mon 17/11

17:34-00:55

2 stops42h 21m

Bangkok Suvarnabhumi

Tue 2/12

21:30-23:29

2 stops38h 59m

฿31,120

St. LouisPhuket City

STL - HKT

STLHKT

Lambert-St Louis

Mon 2/2

11:05-17:35

2 stops41h 30m

Phuket City

Tue 10/2

12:20-18:14

2 stops42h 54m

฿31,411

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Wed 14/1

09:59-00:45

2 stops49h 46m

Bangkok Suvarnabhumi

Sun 1/2

00:55-23:39

2 stops35h 44m

฿31,540

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Tue 17/2

06:00-23:20

2 stops28h 20m

Bangkok Suvarnabhumi

Wed 25/2

09:40-23:38

2 stops26h 58m

฿31,540

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Tue 10/3

13:00-23:20

2 stops46h 20m

Bangkok Suvarnabhumi

Mon 23/3

00:55-00:37

2 stops35h 42m

฿31,540

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Wed 14/1

09:59-00:45

2 stops49h 46m

Bangkok Suvarnabhumi

Wed 28/1

02:05-23:39

2 stops34h 34m

฿31,540

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Mon 12/1

18:55-00:45

2 stops40h 50m

Bangkok Suvarnabhumi

Sun 1/2

00:55-23:39

2 stops35h 44m

฿31,540

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Mon 12/1

18:55-00:45

2 stops40h 50m

Bangkok Suvarnabhumi

Wed 4/2

09:40-20:45

2 stops48h 05m

฿31,540

Flights are sorted by cheapest return flights first.

Deals found on 1/11

Showing 1-10 of 37 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 31 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 ฿31,056). Flying from St. Louis in June will prove the most costly (average of ฿40,731). 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 (795 flights per day), Atlanta (225 flights per day) and New York (202 flights per day).

Houston Hobby
Houston Hobby
From ฿15,479

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 ฿15,479. Explore other affordable destinations below.

Houston Hobby
Houston Hobby
From ฿15,479

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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 3 November 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 flight from St. Louis to anywhere?

    Users have flown out of St. Louis for as low as ฿15,479 to Houston George Bush Intcntl Airport (prices may vary depending on the airline and departure time). On average, users have booked flights for ฿15,479 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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