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$127+ 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 12/11. Fares are subject to change and may not be available on all flights or dates of travel.
CNX — SEL
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
1 adult, Economy
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Cheap 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 October 30, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$238
(Booking.com)

One-way from

$126
(AirAsia)

Popular in

August

Cheapest in

September

Average price

$450

Good round-trip deal

$842 or less

Good one-way deal

$611 or less
Provider with most accurate pricing for Chiang Mai-Seoul (SEL) flight deals.
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Provider most trusted by Cheapflights users for Chiang Mai-Seoul (SEL) flights.
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From Chiang Mai to Seoul (SEL)
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One-way flight from Chiang Mai to Seoul (SEL)
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Highest demand for flights based on searches. 4% potential increase in price ($19 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Price to beat on a round-trip flight from Chiang Mai to Seoul (SEL).
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Price to beat on a one-way flight from Chiang Mai to Seoul (SEL).
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Find 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 October 30, 2025.

This Mytrip deal was found by Cheapflights users on 10/29. 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.
Wed 11/129:40 pmCNX - ICN
Nonstop5h 05mMultiple Airlines
Sat 11/151:10 pmICN - CNX
1 stop10h 40mMultiple Airlines
Deal found 10/29$250
This Mytrip deal was found by Cheapflights users on 10/29. 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.
Wed 11/123:35 pmCNX - ICN
2 stops17h 25mChina Eastern
Sat 11/151:15 pmICN - CNX
2 stops21h 50mChina Eastern
Deal found 10/29$338
This Trip.com deal was found by Cheapflights users on 10/29. 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.
Sat 12/139:25 pmCNX - ICN
Nonstop5h 05mMultiple Airlines
Sat 12/204:40 pmICN - CNX
2 stops23h 40mMultiple Airlines
Deal found 10/29$346
This ThaiVietJet deal was found by Cheapflights users on 10/30. 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 ThaiVietJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1310:25 pmCNX - ICN
1 stop9h 30mThai Vietjet Air
Mon 11/1712:10 pmICN - CNX
1 stop10h 10mThai Vietjet Air
Deal found 10/30$347
This Air China deal was found by Cheapflights users on 10/29. 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 Air China is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/1411:05 pmCNX - ICN
1 stop15h 30mAir China
Sun 11/161:10 pmICN - CNX
1 stop10h 40mAir China
Deal found 10/29$370
This Mytrip deal was found by Cheapflights users on 10/29. 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.
Sat 12/134:25 pmCNX - ICN
2 stops16h 30mChina Eastern
Sat 12/204:40 pmICN - CNX
2 stops23h 40mChina Eastern
Deal found 10/29$371
This oojo deal was found by Cheapflights users on 10/29. 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.
Sat 12/1311:05 pmCNX - GMP
1 stop12h 00mAir China
Sat 12/202:25 pmGMP - CNX
1 stop9h 25mAir China
Deal found 10/29$456
This Japan Airlines deal was found by Cheapflights users on 10/29. 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 Japan Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/110:10 amCNX - GMP
2 stops22h 45mJapan Airlines
Tue 12/307:40 pmGMP - CNX
2 stops17h 40mJapan Airlines
Deal found 10/29$1,803
This Japan Airlines deal was found by Cheapflights users on 10/29. 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 Japan Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/1312:10 pmCNX - GMP
2 stops20h 45mJapan Airlines
Sat 12/207:40 pmGMP - CNX
2 stops17h 40mJapan Airlines
Deal found 10/29$2,509
This Japan Airlines deal was found by Cheapflights users on 10/29. 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 Japan Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/2212:10 pmCNX - GMP
2 stops20h 45mJapan Airlines
Thu 1/18:00 amGMP - CNX
2 stops15h 00mJapan Airlines
Deal found 10/29$2,511
This Japan Airlines deal was found by Cheapflights users on 10/30. 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 Japan Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1110:10 amCNX - GMP
2 stops22h 45mJapan Airlines
Mon 12/158:00 amGMP - CNX
2 stops13h 00mJapan Airlines
Deal found 10/30$2,538
This Japan Airlines deal was found by Cheapflights users on 10/30. 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 Japan Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1112:10 pmCNX - GMP
2 stops20h 45mJapan Airlines
Thu 11/137:40 pmGMP - CNX
2 stops17h 40mJapan Airlines
Deal found 10/30$2,541

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 October 30, 2025.
Use the filters below to find and compare flights from Chiang Mai to Seoul that are best for you.

Fly from

Chiang Mai

Fly to

Seoul

Route

Depart

Return

Price

Chiang MaiIncheon

CNX - ICN

CNXICN

Chiang Mai

Thu 11/13

10:25 pm-9:55 am

1 stop9h 30m

Incheon Intl

Mon 11/17

12:10 pm-8:20 pm

1 stop10h 10m

$347

Chiang MaiIncheon

CNX - ICN

CNXICN

Chiang Mai

Wed 3/25

3:35 pm-11:00 am

2 stops17h 25m

Incheon Intl

Sat 3/28

7:25 am-3:25 pm

1 stop10h 00m

$405

Chiang MaiIncheon

CNX - ICN

CNXICN

Chiang Mai

Tue 11/11

12:40 am-1:50 pm

1 stop11h 10m

Incheon Intl

Wed 11/19

12:10 pm-8:20 pm

1 stop10h 10m

$425

Chiang MaiSeoul

CNX - GMP

CNXGMP

Chiang Mai

Sat 12/13

11:05 pm-1:05 pm

1 stop12h 00m

Seoul Gimpo Intl

Sat 12/20

2:25 pm-9:50 pm

1 stop9h 25m

$456

Chiang MaiIncheon

CNX - ICN

CNXICN

Chiang Mai

Thu 12/18

9:25 pm-4:30 am

Nonstop5h 05m

Incheon Intl

Sun 1/4

4:25 pm-8:25 pm

Nonstop6h 00m

$471

Chiang MaiIncheon

CNX - ICN

CNXICN

Chiang Mai

Thu 11/13

12:45 am-7:30 am

Nonstop4h 45m

Incheon Intl

Sun 11/16

7:10 pm-11:45 pm

Nonstop6h 35m

$520

Chiang MaiIncheon

CNX - ICN

CNXICN

Chiang Mai

Fri 2/27

12:25 pm-6:30 am

1 stop16h 05m

Incheon Intl

Sun 3/1

12:10 am-11:25 am

1 stop13h 15m

$537

Chiang MaiSeoul

CNX - GMP

CNXGMP

Chiang Mai

Wed 3/25

4:25 pm-7:50 pm

2 stops25h 25m

Seoul Gimpo Intl

Fri 3/27

12:00 pm-3:25 pm

2 stops29h 25m

$656

Chiang MaiSeoul

CNX - GMP

CNXGMP

Chiang Mai

Tue 1/6

12:40 am-12:20 pm

1 stop9h 40m

Seoul Gimpo Intl

Tue 1/27

11:25 am-7:55 am

2 stops22h 30m

$779

Chiang MaiSeoul

CNX - GMP

CNXGMP

Chiang Mai

Sun 2/15

9:40 pm-10:05 pm

2 stops22h 25m

Seoul Gimpo Intl

Mon 3/16

7:40 pm-11:20 am

2 stops17h 40m

$1,671

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/29

Showing 1-10 of 31 results
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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 October.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Chiang Mai-Seoul flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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, February is the cheapest month in which you can book a flight from Chiang Mai to Seoul (average of $135). Flying from Chiang Mai to Seoul in January is currently the most expensive (average of $339). 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 October 30, 2025.

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.

Weekly flight availability from Chiang Mai to Seoul

Explore weekly flight availability from Chiang Mai to Seoul. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated October 30, 2025.

The most flights from CNX to SEL are scheduled on a Monday (6 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (2 on average).

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 5 outbound flights to Seoul per day. 0 airlines have flights to Seoul from Chiang Mai on a regular basis.

  • How popular is this Chiang Mai to Seoul flight route?

    The Chiang Mai to Seoul flight path was viewed by 8 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

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

    There are many flights that can get you from Chiang Mai to Seoul in 9h 30m. Fly via Thai Vietjet 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 most reliable airlines from Chiang Mai to Seoul?

    Consider Delta (87%), Jeju Air (85%) or Thai Airways (82%) 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 $210. While the most popular route (Chiang Mai - Seoul Gimpo Intl) can be booked for $344 on average, our data indicates $909 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, February is the cheapest month in which you can book a flight from Chiang Mai to Seoul (average of $135). Flying from Chiang Mai to Seoul in January is currently the most expensive (average of $339). 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.

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