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Chiang Mai

$1,199+ Cheap flights from St. Louis (STL) to Chiang Mai (CNX)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/19. Fares are subject to change and may not be available on all flights or dates of travel.
STL — CNX
Feb 23 — Mar 21
Mon 2/23
Mon 3/2
1 adult, Economy
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Cheap flight deals from St. Louis to Chiang Mai

Cheapest flights from St. Louis to Chiang Mai
Explore the most affordable flight options available from St. Louis to Chiang Mai. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 24, 2026.

This oojo deal was found by Cheapflights users on 1/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/192:47 pm
STL
-
CNX
2 stops30h 48m
EVA Air
Thu 2/2611:50 am
CNX
-
STL
2 stops39h 01m
EVA Air
Deal found 1/22$1,291
This China Airlines deal was found by Cheapflights users on 1/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/195:20 pm
STL
-
CNX
3 stops52h 05m
Multiple Airlines
Thu 2/2611:25 am
CNX
-
STL
2 stops44h 25m
Multiple Airlines
Deal found 1/22$1,667
This Qatar Airways deal was found by Cheapflights users on 1/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/261:35 pm
STL
-
CNX
3 stops30h 50m
Qatar Airways
Wed 1/289:40 pm
CNX
-
STL
3 stops33h 34m
Qatar Airways
Deal found 1/22$1,970
This China Airlines deal was found by Cheapflights users on 1/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/318:25 am
STL
-
CNX
3 stops37h 55m
Multiple Airlines
Mon 4/2011:20 am
CNX
-
STL
2 stops42h 40m
Multiple Airlines
Deal found 1/23$2,042
This Qatar Airways deal was found by Cheapflights users on 1/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/1911:59 am
STL
-
CNX
3 stops34h 21m
Qatar Airways
Thu 2/269:40 pm
CNX
-
STL
3 stops36h 32m
Qatar Airways
Deal found 1/22$2,079
This Orbitz deal was found by Cheapflights users on 1/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/123:24 pm
STL
-
CNX
2 stops30h 01m
Multiple Airlines
Wed 11/1812:05 pm
CNX
-
STL
2 stops62h 50m
Multiple Airlines
Deal found 1/22$4,926
This oojo deal was found by Cheapflights users on 1/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/123:24 pm
STL
-
CNX
2 stops30h 11m
EVA Air
Wed 11/1811:50 am
CNX
-
STL
2 stops39h 36m
EVA Air
Deal found 1/22$7,455
This Qatar Airways deal was found by Cheapflights users on 1/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/122:50 pm
STL
-
CNX
3 stops33h 55m
Qatar Airways
Wed 11/187:45 pm
CNX
-
STL
3 stops39h 44m
Qatar Airways
Deal found 1/22$9,584

Find flight deals from St. Louis to Chiang Mai

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Chiang Mai (CNX). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 24, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$1,011
(SmartFares)
Provider with most accurate pricing for Lambert-St Louis-Chiang Mai flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lambert-St Louis-Chiang Mai flights.
Search Deals
From Lambert-St Louis to Chiang Mai
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from St. Louis to Chiang Mai 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, Cheapflights users made 2,558,603 searches. Data last updated January 24, 2026.
Use the filters below to find and compare flights from St. Louis to Chiang Mai that are best for you.

Fly from

St. Louis

Fly to

Chiang Mai

Route

Depart

Return

Price

St. LouisChiang Mai

STL - CNX

STLCNX

Lambert-St Louis

Thu 2/19

2:47 pm-10:35 am

2 stops30h 48m

Chiang Mai

Thu 2/26

11:50 am-1:51 pm

2 stops39h 01m

$1,291

St. LouisChiang Mai

STL - CNX

STLCNX

Lambert-St Louis

Thu 2/19

5:20 pm-10:25 am

3 stops52h 05m

Chiang Mai

Thu 2/26

11:25 am-6:50 pm

2 stops44h 25m

$1,667

St. LouisChiang Mai

STL - CNX

STLCNX

Lambert-St Louis

Mon 1/26

1:35 pm-9:25 am

3 stops30h 50m

Chiang Mai

Wed 1/28

9:40 pm-6:14 pm

3 stops33h 34m

$1,970

St. LouisChiang Mai

STL - CNX

STLCNX

Lambert-St Louis

Tue 3/31

8:25 am-10:20 am

2 stops37h 55m

Chiang Mai

Mon 4/20

11:20 am-2:50 pm

3 stops39h 30m

$2,042

St. LouisChiang Mai

STL - CNX

STLCNX

Lambert-St Louis

Thu 2/19

11:59 am-11:20 am

3 stops34h 21m

Chiang Mai

Thu 2/26

9:40 pm-9:12 pm

3 stops36h 32m

$2,079

St. LouisChiang Mai

STL - CNX

STLCNX

Lambert-St Louis

Mon 1/26

8:05 am-9:25 am

3 stops36h 20m

Chiang Mai

Wed 1/28

11:05 pm-5:11 am

2 stops43h 06m

$11,004

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/22

Compare providers for flights from St. Louis to Chiang Mai

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to Chiang Mai in January.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*1 star
OvagoPrice Accuracy2 starsTrust Score*2 stars
AranGrantPrice Accuracy2 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on St. Louis-Chiang Mai flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Chiang Mai flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Chiang Mai flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on St. Louis-Chiang Mai flights, Cheapflights users trust AranGrant the most. AranGrant has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-Chiang Mai flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from St. Louis to Chiang Mai

Have a flexible travel schedule? Discover the best time to fly to Chiang Mai from St. Louis with our price prediction graph.
Estimated round-trip 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.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Chiang Mai. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from St. Louis to Chiang Mai?

    Departing from St. Louis to Chiang Mai will take you 30h 48m. The distance from St. Louis to Chiang Mai is about 8411 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • Can I find deals for flights from St. Louis to Chiang Mai that include hotel bookings?

    Yes. In addition to deals on St. Louis to Chiang Mai flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Chiang Mai?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Chiang Mai.

  • Can I find deals for business class flights from St. Louis to Chiang Mai?

    Yes. Cheapflights offers flight deals from St. Louis to Chiang Mai by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

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