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$76+ Cheap flights from Chiang Mai (CNX) to Seoul (SEL)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/17. Fares are subject to change and may not be available on all flights or dates of travel.
CNX — SEL
Jun 14 — Jun 211
Sun 6/14
Sun 6/21
1 adult, Economy
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Cheap flight deals from Chiang Mai to Seoul

Cheapest flights from Chiang Mai to Seoul
Explore the most affordable flight options available from Chiang Mai to Seoul. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 15, 2026.

This Booking.com deal was found by Cheapflights users on 5/11. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/2111:00 pm
CNX
-
ICN
Nonstop5h 30m
Jeju Air
Thu 5/286:10 pm
ICN
-
CNX
Nonstop5h 50m
Jeju Air
Deal found 5/11$275
This Jeju Air deal was found by Cheapflights users on 5/12. 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 Jeju Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/2811:00 pm
CNX
-
ICN
Nonstop5h 30m
Jeju Air
Thu 6/46:10 pm
ICN
-
CNX
Nonstop5h 50m
Jeju Air
Deal found 5/12$285
This Eastar Jet deal was found by Cheapflights users on 5/14. 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 Eastar Jet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/1711:55 pm
CNX
-
ICN
Nonstop5h 15m
Eastar Jet
Wed 5/276:30 pm
ICN
-
CNX
Nonstop6h 10m
Eastar Jet
Deal found 5/14$297
This Booking.com deal was found by Cheapflights users on 5/11. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/2111:00 pm
CNX
-
ICN
Nonstop5h 30m
Multiple Airlines
Thu 5/287:45 am
ICN
-
CNX
1 stop9h 35m
Multiple Airlines
Deal found 5/11$315
This Eastar Jet deal was found by Cheapflights users on 5/13. 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 Eastar Jet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/2011:55 pm
CNX
-
ICN
Nonstop5h 15m
Eastar Jet
Thu 5/286:30 pm
ICN
-
CNX
Nonstop6h 10m
Eastar Jet
Deal found 5/13$317
This Booking.com deal was found by Cheapflights users on 5/10. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/411:00 pm
CNX
-
ICN
Nonstop5h 30m
Multiple Airlines
Sun 6/72:30 pm
ICN
-
CNX
1 stop24h 55m
Multiple Airlines
Deal found 5/10$319
This Kiwi.com deal was found by Cheapflights users on 5/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/411:00 pm
CNX
-
ICN
Nonstop5h 30m
Jeju Air
Sun 6/76:10 pm
ICN
-
CNX
Nonstop5h 50m
Jeju Air
Deal found 5/10$326
This Jin Air deal was found by Cheapflights users on 5/15. 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 Jin Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/229:45 pm
CNX
-
ICN
Nonstop5h 20m
Jin Air
Tue 5/265:20 pm
ICN
-
CNX
Nonstop5h 25m
Jin Air
Deal found 5/15$338
This Mytrip deal was found by Cheapflights users on 5/15. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/2911:05 pm
CNX
-
ICN
1 stop10h 30m
Air China
Mon 7/61:05 pm
ICN
-
CNX
1 stop10h 45m
Air China
Deal found 5/15$358
This Mytrip deal was found by Cheapflights users on 5/15. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/2911:05 pm
CNX
-
GMP
1 stop12h 00m
Air China
Mon 7/62:25 pm
GMP
-
CNX
1 stop9h 25m
Air China
Deal found 5/15$358
This oojo deal was found by Cheapflights users on 5/11. 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 5/212:55 pm
CNX
-
ICN
1 stop19h 00m
China Eastern
Thu 5/284:15 pm
ICN
-
CNX
2 stops19h 00m
China Eastern
Deal found 5/11$360
This Trip.com deal was found by Cheapflights users on 5/12. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/1511:05 pm
CNX
-
GMP
1 stop12h 00m
Air China
Mon 6/292:25 pm
GMP
-
CNX
1 stop9h 25m
Air China
Deal found 5/12$444

Find flight deals from Chiang Mai to Seoul

Discover tips and strategies to find the most affordable flight options for your journey from Chiang Mai (CNX) to Seoul (SEL). 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 May 15, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$285
(Jeju Air)

One-way from

$76
(CheapOair)

Popular in

October

Cheapest in

May

Average price

$252

Good one-way deal

$192 or less
Provider with most accurate pricing for Chiang Mai-Seoul (SEL) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chiang Mai-Seoul (SEL) flights.
Search Deals
From Chiang Mai to Seoul (SEL)
Search Deals
One-way flight from Chiang Mai to Seoul (SEL)
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($27 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
Search Deals
Price to beat on a one-way flight from Chiang Mai to Seoul (SEL).
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Chiang Mai to Seoul 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 May 15, 2026.
Use the filters below to find and compare flights from Chiang Mai to Seoul that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

Chiang MaiIncheon

CNX - ICN

CNXICN

Chiang Mai

Thu 5/28

11:00 pm-6:30 am

Nonstop5h 30m

Incheon Intl

Thu 6/4

6:10 pm-10:00 pm

Nonstop5h 50m

$285

Chiang MaiIncheon

CNX - ICN

CNXICN

Chiang Mai

Thu 6/4

11:00 pm-6:30 am

Nonstop5h 30m

Incheon Intl

Sun 6/7

2:30 pm-1:25 pm

1 stop24h 55m

$319

Chiang MaiIncheon

CNX - ICN

CNXICN

Chiang Mai

Thu 5/28

10:05 am-11:15 am

2 stops23h 10m

Incheon Intl

Sun 5/31

1:10 pm-3:20 pm

2 stops28h 10m

$398

Chiang MaiIncheon

CNX - ICN

CNXICN

Chiang Mai

Tue 5/26

2:55 pm-1:30 pm

1 stop20h 35m

Incheon Intl

Thu 6/11

7:45 am-9:15 am

1 stop27h 30m

$416

Chiang MaiIncheon

CNX - ICN

CNXICN

Chiang Mai

Thu 5/28

10:05 am-11:55 am

3 stops23h 50m

Incheon Intl

Thu 6/4

7:45 am-3:20 pm

1 stop9h 35m

$422

Chiang MaiIncheon

CNX - ICN

CNXICN

Chiang Mai

Mon 6/15

10:05 am-3:10 pm

3 stops27h 05m

Incheon Intl

Mon 6/29

3:55 pm-9:15 am

3 stops43h 20m

$430

Chiang MaiIncheon

CNX - ICN

CNXICN

Chiang Mai

Thu 5/28

11:55 pm-7:10 am

Nonstop5h 15m

Incheon Intl

Sun 5/31

6:30 pm-10:40 pm

Nonstop6h 10m

$433

Chiang MaiIncheon

CNX - ICN

CNXICN

Chiang Mai

Tue 6/30

4:10 pm-9:05 pm

2 stops26h 55m

Incheon Intl

Tue 7/7

12:55 pm-1:25 pm

1 stop26h 30m

$435

Chiang MaiIncheon

CNX - ICN

CNXICN

Chiang Mai

Wed 7/22

10:05 am-10:55 am

2 stops22h 50m

Incheon Intl

Thu 8/6

7:45 am-9:15 am

1 stop27h 30m

$435

Chiang MaiSeoul

CNX - GMP

CNXGMP

Chiang Mai

Mon 6/15

11:05 pm-1:05 pm

1 stop12h 00m

Seoul Gimpo Intl

Mon 6/29

2:25 pm-9:50 pm

1 stop9h 25m

$444

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/11

Showing 1-10 of 40 resultsSorted by cheapest first
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Compare providers for flights from Chiang Mai to Seoul

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 Chiang Mai to Seoul in May.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
MytripPrice 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 Chiang Mai-Seoul flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Chiang Mai-Seoul flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Chiang Mai-Seoul flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Chiang Mai-Seoul flights, Cheapflights users trust FlightHub the most. FlightHub 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 Chiang Mai-Seoul 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 Chiang Mai to Seoul

Have a flexible travel schedule? Discover the best time to fly to Seoul from Chiang Mai 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.

Cheapflights Insights

Everything you need to know about your flight from Chiang Mai to Seoul

What is the cheapest month to book a flight from Chiang Mai to Seoul?

Currently, May is the cheapest month in which you can book a flight from Chiang Mai to Seoul (average of $64). Flying from Chiang Mai to Seoul in November is currently the most expensive (average of $328). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from CNX to SEL?

Find hourly flight availability from Chiang Mai to Seoul. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated May 15, 2026.

When flying from Chiang Mai to Seoul, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How much does it cost to fly round-trip from Chiang Mai to Seoul?

Related info for your journey

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

  • What airport do you fly from for flights from Chiang Mai to Seoul?

    For a flight from Chiang Mai to Seoul, you will be flying from Chiang Mai. Chiang Mai (CNX) is just 1.9 mi from the center of the city. Chiang Mai is the only Chiang Mai airport and it handles 1 outbound flight to Seoul per day. 0 airlines have flights to Seoul from Chiang Mai on a regular basis.

  • How long is the flight from Chiang Mai to Seoul?

    There are many flights that can get you from Chiang Mai to Seoul in 5h 30m. Fly via Jeju Air, China Eastern, or Air China to get the fastest option. Chiang Mai and Seoul are separated by a distance of 2099 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from Chiang Mai to Seoul one-way?

    The cheapest airline one-way is Jin Air, with whom users have recently found tickets for as low as $139. However, be on the lookout for offers from Jeju Air and Eastar Jet, as they are both options that can get you from Chiang Mai to Seoul for a low price.

  • What are the most reliable airlines from Chiang Mai to Seoul?

    Consider T'way Air (100%), Air Busan (100%) or Jin Air (100%) when booking your flight. These represent the most reliable airlines when flying from Chiang Mai to Seoul.

  • What are the cheapest flights from Chiang Mai to Seoul?

    Looking at all options, your cheapest flight can be booked for $88. While the most popular route (Chiang Mai - Incheon Intl) can be booked for $458 on average, our data indicates $254 when flying from Chiang Mai to Seoul.

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

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

  • How can I find direct flights from Chiang Mai to Seoul?

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

  • Can I find deals for business class flights from Chiang Mai to Seoul?

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

  • What is the cheapest month to book a flight from Chiang Mai to Seoul?

    Currently, May is the cheapest month in which you can book a flight from Chiang Mai to Seoul (average of $64). Flying from Chiang Mai to Seoul in November is currently the most expensive (average of $328). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Chiang Mai to Seoul

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