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Cheap flights from Thailand to St. Louis from $609

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Thailand to St. Louis departing on 9/13. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Thailand to St. Louis

Recent round-trip flight deals from Thailand to St. Louis

Enter your travel dates to find the best prices.
Air Canada Logo
9:50 am - 8:00 pm
BKK
-
STL
46h 10m
2 stops
Air Canada Logo
4:15 pm - 5:30 am
STL
-
BKK
49h 15m
2 stops
$1,114Air Canada
Mon, Oct 19 - Tue, Oct 27
Multiple Airlines Logo
1:20 pm - 1:52 pm
BKK
-
STL
36h 32m
2 stops
Multiple Airlines Logo
7:56 pm - 4:20 pm
STL
-
BKK
32h 24m
2 stops
$1,138Multiple Airlines
Mon, Jul 6 - Mon, Jul 13
EVA Air Logo
4:45 pm - 1:52 pm
BKK
-
STL
33h 07m
2 stops
EVA Air Logo
7:56 pm - 11:20 am
STL
-
BKK
27h 24m
2 stops
$1,191EVA Air
Mon, Jul 6 - Mon, Jul 13
Japan Airlines Logo
9:40 pm - 11:59 pm
BKK
-
STL
38h 19m
2 stops
Japan Airlines Logo
6:55 am - 11:00 pm
STL
-
BKK
28h 05m
2 stops
$1,209Japan Airlines
Mon, Jul 6 - Mon, Jul 13
Multiple Airlines Logo
10:50 am - 2:20 pm
BKK
-
STL
39h 30m
3 stops
Multiple Airlines Logo
8:35 am - 1:05 pm
STL
-
BKK
40h 30m
2 stops
$1,287Multiple Airlines
Mon, Oct 19 - Tue, Oct 27
Multiple Airlines Logo
5:30 pm - 12:10 pm
BKK
-
STL
30h 40m
2 stops
Multiple Airlines Logo
6:20 pm - 4:20 pm
STL
-
BKK
34h 00m
2 stops
$1,378Multiple Airlines
Wed, Jul 22 - Wed, Jul 29
Qatar Airways Logo
8:30 pm - 11:40 pm
HKT
-
STL
39h 10m
2 stops
Qatar Airways Logo
6:30 am - 7:45 am
STL
-
HKT
37h 15m
2 stops
$1,432Qatar Airways
Mon, Sep 14 - Wed, Sep 16
Qatar Airways Logo
8:30 pm - 11:40 pm
HKT
-
STL
39h 10m
2 stops
Qatar Airways Logo
6:30 am - 7:45 am
STL
-
HKT
37h 15m
2 stops
$1,434Qatar Airways
Mon, Sep 14 - Wed, Sep 16
United Airlines Logo
9:35 am - 7:26 pm
BKK
-
STL
45h 51m
2 stops
United Airlines Logo
2:57 pm - 9:35 am
STL
-
BKK
30h 38m
3 stops
$1,465United Airlines
Mon, Jul 6 - Mon, Jul 13
United Airlines Logo
3:45 pm - 9:41 am
BKK
-
STL
29h 56m
3 stops
United Airlines Logo
9:13 am - 11:25 am
STL
-
BKK
38h 12m
3 stops
$1,475United Airlines
Mon, Oct 19 - Tue, Oct 27

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Air Canada flights from Thailand to St. Louis

Our best Air Canada deals on Thailand to St. Louis flight tickets
Air Canada
Oct 19
BKK9:50 amBangkok Suvarnabhumi
46h 10m
2 stops
STL8:00 pmLambert-St Louis
Oct 27
STL4:15 pmLambert-St Louis
49h 15m
2 stops
BKK5:30 amBangkok Suvarnabhumi
$1,114
Air Canada
Jun 10
BKK2:35 amBangkok Suvarnabhumi
45h 31m
2 stops
STL12:06 pmLambert-St Louis
Aug 31
STL4:40 pmLambert-St Louis
24h 25m
2 stops
BKK5:05 amBangkok Suvarnabhumi
$1,174
Air Canada
Jun 10
BKK7:45 amBangkok Suvarnabhumi
24h 40m
2 stops
STL8:25 pmLambert-St Louis
Sep 2
STL8:00 amLambert-St Louis
33h 05m
2 stops
BKK5:05 amBangkok Suvarnabhumi
$1,175

Qatar Airways flights from Thailand to St. Louis

Our best Qatar Airways deals on Thailand to St. Louis flight tickets
Qatar Airways
Jun 9
BKK2:30 amBangkok Suvarnabhumi
33h 29m
2 stops
STL11:59 pmLambert-St Louis
Sep 1
STL6:35 amLambert-St Louis
35h 45m
2 stops
BKK6:20 amBangkok Suvarnabhumi
$1,130
Qatar Airways
Jun 9
BKK2:30 amBangkok Suvarnabhumi
33h 29m
2 stops
STL11:59 pmLambert-St Louis
Aug 29
STL3:04 pmLambert-St Louis
51h 16m
2 stops
BKK6:20 amBangkok Suvarnabhumi
$1,155
Qatar Airways
Jun 13
BKK7:45 pmBangkok Suvarnabhumi
40h 14m
2 stops
STL11:59 pmLambert-St Louis
Sep 1
STL6:35 amLambert-St Louis
35h 45m
2 stops
BKK6:20 amBangkok Suvarnabhumi
$1,181

momondo Fare Finder

 
Customize your flight search to find flights from Thailand to St. Louis that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated June 9, 2026.
Use the filters below to find and compare flights from Thailand to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BangkokSt. Louis

BKK - STL

BKKSTL

Bangkok Suvarnabhumi

Mon 10/19

9:50 am-8:00 pm

2 stops46h 10m

Lambert-St Louis

Tue 10/27

4:15 pm-5:30 am

2 stops49h 15m

$1,114

BangkokSt. Louis

BKK - STL

BKKSTL

Bangkok Suvarnabhumi

Mon 7/6

1:20 pm-1:52 pm

2 stops36h 32m

Lambert-St Louis

Mon 7/13

7:56 pm-4:20 pm

2 stops32h 24m

$1,138
Quickest round-trip

BangkokSt. Louis

BKK - STL

BKKSTL

Bangkok Suvarnabhumi

Mon 7/6

4:45 pm-1:52 pm

2 stops33h 07m

Lambert-St Louis

Mon 7/13

7:56 pm-11:20 am

2 stops27h 24m

$1,191

BangkokSt. Louis

BKK - STL

BKKSTL

Bangkok Suvarnabhumi

Mon 7/6

9:40 pm-11:59 pm

2 stops38h 19m

Lambert-St Louis

Mon 7/13

6:55 am-11:00 pm

2 stops28h 05m

$1,209

BangkokSt. Louis

BKK - STL

BKKSTL

Bangkok Suvarnabhumi

Mon 10/19

10:50 am-2:20 pm

3 stops39h 30m

Lambert-St Louis

Tue 10/27

8:35 am-1:05 pm

2 stops40h 30m

$1,287

BangkokSt. Louis

BKK - STL

BKKSTL

Bangkok Suvarnabhumi

Wed 7/22

5:30 pm-12:10 pm

2 stops30h 40m

Lambert-St Louis

Wed 7/29

6:20 pm-4:20 pm

2 stops34h 00m

$1,378

Phuket CitySt. Louis

HKT - STL

HKTSTL

Phuket City

Mon 9/14

8:30 pm-11:40 pm

2 stops39h 10m

Lambert-St Louis

Wed 9/16

6:30 am-7:45 am

2 stops37h 15m

$1,432

Phuket CitySt. Louis

HKT - STL

HKTSTL

Phuket City

Mon 9/14

8:30 pm-11:40 pm

2 stops39h 10m

Lambert-St Louis

Wed 9/16

6:30 am-7:45 am

2 stops37h 15m

$1,434

BangkokSt. Louis

BKK - STL

BKKSTL

Bangkok Suvarnabhumi

Mon 7/6

9:35 am-7:26 pm

2 stops45h 51m

Lambert-St Louis

Mon 7/13

2:57 pm-9:35 am

3 stops30h 38m

$1,465

BangkokSt. Louis

BKK - STL

BKKSTL

Bangkok Suvarnabhumi

Mon 10/19

3:45 pm-9:41 am

3 stops29h 56m

Lambert-St Louis

Tue 10/27

9:13 am-11:25 am

3 stops38h 12m

$1,475

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to St. Louis from

How to get the cheapest flight ticket from Thailand to St. Louis

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

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

In general, October is the cheapest month to fly from Thailand to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $0. The month of February is another great option to travel to St. Louis, with average flight prices from Thailand averaging around $952.

Cheap Thailand to St. Louis flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Thailand to St. Louis

Fastest flight time

38h 19m

Direct flights

None
The fastest flight from Thailand to St. Louis takes 38h 19m
There are no direct flights from Thailand to St. Louis. There are no popular flight routes from Thailand to St. Louis.
Search flight deals

Frequently asked questions about flying from Thailand to St. Louis

  • When did momondo last update prices for flights from Thailand to Lambert-St Louis Airport?

    Prices for flights from Thailand to Lambert-St Louis Airport refresh daily.

  • How many operators does momondo search for flights from Thailand to Lambert-St Louis Airport?

  • How old do you have to be to fly from Thailand to Lambert-St Louis Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Thailand to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The necessary travel and health documents for your Lambert-St Louis Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Thailand to St. Louis

Compare and see reviews for airlines that fly from Thailand to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
Japan AirlinesPriceFrom $952Free CancellationRating
8.3
1,836 reviews
Search Japan Airlines flights
United AirlinesPriceFrom $1,410Free CancellationRating
7.4
9,800 reviews
Search United Airlines flights

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles
Chesterfield
Fairview Heights
Hermann
Maryland Heights
Florissant
O'Fallon
St. Peters
Collinsville
Alton
Wentzville
Fenton
Clayton
Farmington
Festus
Eureka
Litchfield
Edwardsville
Grafton
Shrewsbury

Why use momondo?

Why should I use momondo to find a flight deal from Thailand to St. Louis?

It is quick and easy to find Thailand to St. Louis flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to St. Louis that suits you.

Can I find flights from Thailand to St. Louis with flexible booking policies on momondo?

All flight searches from Thailand to St. Louis on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Thailand to St. Louis?

momondo provides multiple filters to help you find the best flight to St. Louis from Thailand. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Thailand to St. Louis right now. Can momondo alert me if prices change?

If you are simply researching potential flights to St. Louis, momondo offers a useful price alert feature which will track prices for flights to St. Louis from Thailand and alert you when they change.

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