฿5,766+ 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 25/8. 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
2 Jul — 9 Jul1
1 adult
1 adult, Economy, 0 bags

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 2 June 2026. In the last 7 days, Cheapflights users made a total of 17,341 searches

Fly to

Route

Depart

Return

Price

Cheapest return flight

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Thu 1/10

11:01-06:45

2 stops31h 44m

Bangkok Suvarnabhumi

Fri 30/10

02:55-20:08

2 stops29h 13m

฿33,812

St. LouisPhuket City

STL - HKT

STLHKT

Lambert-St Louis

Mon 5/10

05:30-23:40

2 stops30h 10m

Phuket City

Wed 21/10

02:25-20:08

2 stops29h 43m

฿34,300

St. LouisPhuket City

STL - HKT

STLHKT

Lambert-St Louis

Sun 13/9

09:21-23:40

2 stops26h 19m

Phuket City

Fri 18/9

02:25-20:44

2 stops30h 19m

฿34,789

St. LouisPhuket City

STL - HKT

STLHKT

Lambert-St Louis

Tue 14/7

07:32-12:05

2 stops40h 33m

Phuket City

Tue 21/7

09:25-17:21

2 stops43h 56m

฿34,789

St. LouisPhuket City

STL - HKT

STLHKT

Lambert-St Louis

Tue 3/11

08:40-06:15

2 stops32h 35m

Phuket City

Tue 10/11

02:40-19:27

2 stops29h 47m

฿36,059

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Sun 1/11

16:48-11:45

2 stops29h 57m

Bangkok Suvarnabhumi

Sun 8/11

20:50-16:18

2 stops32h 28m

฿37,721

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Mon 21/9

07:21-06:20

2 stops34h 59m

Bangkok Suvarnabhumi

Sun 4/10

02:30-23:25

2 stops32h 55m

฿42,053

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Tue 22/9

11:01-07:15

2 stops32h 14m

Bangkok Suvarnabhumi

Thu 8/10

03:00-20:08

2 stops29h 08m

฿42,053

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Thu 24/9

11:01-07:15

2 stops32h 14m

Bangkok Suvarnabhumi

Sun 4/10

02:30-23:25

2 stops32h 55m

฿42,053

St. LouisPhuket City

STL - HKT

STLHKT

Lambert-St Louis

Sun 13/9

06:00-07:45

2 stops37h 45m

Phuket City

Thu 17/9

20:30-23:59

2 stops39h 29m

฿43,617

Flights are sorted by cheapest return flights first.

Deals found on 30/5

Showing 1-10 of 35 resultsSorted by cheapest first
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.

What is the cheapest month to book a flight from St. Louis?

Currently, February is the cheapest month in which you can book a flight from St. Louis (average of ฿33,356). Flying from St. Louis in December will prove the most costly (average of ฿55,669). There are multiple factors that influence the price of a flight so comparing airlines, departure airports and times can help keep costs down.

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

Booking 9 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.

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 2 June 2026.

  • 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, Atlanta, Cancún. 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 February; with December being the most expensive. Prices will vary depending on multiple factors such as booking in advance, airline and departure airports and times.

  • Where are the cheapest places to fly to from St. Louis?

    Here are some of the cheapest flight destinations from St. Louis:
    Fly from St. Louis to Bangkok from ฿32,965

  • 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.