HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Seoul

$122+ 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 9/9. Fares are subject to change and may not be available on all flights or dates of travel.
CNX — SEL
Sep 10 — Sep 171
Thu 9/10
Thu 9/17
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Chiang Mai to Seoul with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 August 11, 2026.

This Kiwi.com deal was found by Cheapflights users on 8/7. 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.
Wed 9/911:55 pm -
Nonstop5h 15m
Sun 9/206:30 pm -
Nonstop6h 10m
Deal found 8/7$211
This Kiwi.com deal was found by Cheapflights users on 8/6. 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 9/39:45 pm -
Nonstop5h 20m
Sun 9/66:30 pm -
Nonstop6h 10m
Deal found 8/6$219
This Booking.com deal was found by Cheapflights users on 8/9. 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.
Wed 9/911:55 pm -
Nonstop5h 15m
Thu 9/106:30 pm -
Nonstop6h 10m
Deal found 8/9$221
This Eastar Jet deal was found by Cheapflights users on 8/11. 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 Eastar Jet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/3011:55 pm -
Nonstop5h 15m
Sat 10/106:30 pm -
Nonstop6h 10m
Deal found 8/11$235
This Eastar Jet deal was found by Cheapflights users on 8/6. 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 9/2311:55 pm -
Nonstop5h 15m
Sun 9/276:30 pm -
Nonstop6h 10m
Deal found 8/6$261
This Kiwi.com deal was found by Cheapflights users on 8/8. 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 8/279:05 pm -
1 stop10h 55m
Sun 8/307:55 pm -
Nonstop5h 55m
Deal found 8/8$274
This Kiwi.com deal was found by Cheapflights users on 8/10. 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.
Mon 8/2410:30 pm -
1 stop9h 30m
Wed 9/26:30 pm -
Nonstop6h 10m
Deal found 8/10$299
This Kiwi.com deal was found by Cheapflights users on 8/8. 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.
Wed 8/2612:50 am -
Nonstop5h 25m
Sun 8/307:55 pm -
Nonstop5h 55m
Deal found 8/8$302
This Kiwi.com deal was found by Cheapflights users on 8/7. 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.
Wed 9/96:50 am -
2 stops16h 20m
Sun 9/206:30 pm -
Nonstop6h 10m
Deal found 8/7$307
This OneTravel deal was found by Cheapflights users on 8/10. 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 OneTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/244:10 pm -
2 stops16h 50m
Wed 9/28:50 pm -
2 stops20h 30m
Deal found 8/10$515
This EVA Air deal was found by Cheapflights users on 8/8. 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 EVA Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1811:35 am -
1 stop23h 15m
Sat 9/261:50 pm -
1 stop22h 35m
Deal found 8/8$1,077
This Booking.com deal was found by Cheapflights users on 8/7. 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.
Wed 9/92:35 pm -
2 stops18h 05m
Sun 9/207:15 pm -
2 stops16h 05m
Deal found 8/7$1,464

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 August 11, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$211
(Kiwi.com)

One-way from

$122
(Eastar Jet)

Popular in

November

Cheapest in

October

Good round-trip deal

$667 or less

Good one-way deal

$204 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. 3% potential increase in price ($13 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
Search Deals
Price to beat on a round-trip flight from Chiang Mai to Seoul (SEL).
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 August 11, 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

Chiang MaiIncheon

CNX Chiang Mai - ICN Incheon Intl

CNXICN

Chiang Mai

Wed 9/23

11:55 pm-7:10 am

Nonstop5h 15m

Incheon Intl

Sun 9/27

6:30 pm-10:40 pm

Nonstop6h 10m

$261

Chiang MaiIncheon

CNX Chiang Mai - ICN Incheon Intl

CNXICN

Chiang Mai

Mon 8/24

10:30 pm-10:00 am

1 stop9h 30m

Incheon Intl

Wed 9/2

6:30 pm-10:40 pm

Nonstop6h 10m

$299

Chiang MaiIncheon

CNX Chiang Mai - ICN Incheon Intl

CNXICN

Chiang Mai

Mon 8/24

10:30 pm-10:00 am

1 stop9h 30m

Incheon Intl

Wed 9/2

12:10 pm-10:00 pm

1 stop11h 50m

$347
Quickest round-trip

Chiang MaiIncheon

CNX Chiang Mai - ICN Incheon Intl

CNXICN

Chiang Mai

Sun 10/18

11:55 pm-7:10 am

Nonstop5h 15m

Incheon Intl

Sat 10/31

5:25 pm-9:20 pm

Nonstop5h 55m

$348

Chiang MaiIncheon

CNX Chiang Mai - ICN Incheon Intl

CNXICN

Chiang Mai

Wed 10/14

8:10 pm-10:35 am

1 stop12h 25m

Incheon Intl

Sat 10/24

12:05 pm-8:50 pm

1 stop10h 45m

$402

Chiang MaiIncheon

CNX Chiang Mai - ICN Incheon Intl

CNXICN

Chiang Mai

Wed 9/9

4:10 pm-10:55 am

2 stops16h 45m

Incheon Intl

Thu 9/10

4:15 pm-1:25 pm

1 stop23h 10m

$412

Chiang MaiIncheon

CNX Chiang Mai - ICN Incheon Intl

CNXICN

Chiang Mai

Wed 9/23

10:30 pm-10:00 am

1 stop9h 30m

Incheon Intl

Sun 9/27

12:10 pm-10:00 pm

1 stop11h 50m

$437

Chiang MaiIncheon

CNX Chiang Mai - ICN Incheon Intl

CNXICN

Chiang Mai

Tue 9/15

10:30 pm-10:00 am

1 stop9h 30m

Incheon Intl

Sun 9/20

12:10 pm-11:25 pm

1 stop13h 15m

$462

Chiang MaiIncheon

CNX Chiang Mai - ICN Incheon Intl

CNXICN

Chiang Mai

Fri 2/5

1:20 pm-5:25 am

1 stop14h 05m

Incheon Intl

Wed 2/10

12:10 pm-10:00 pm

1 stop11h 50m

$465

Chiang MaiSeoul

CNX Chiang Mai - GMP Seoul Gimpo Intl

CNXGMP

Chiang Mai

Fri 9/18

11:35 am-12:50 pm

1 stop23h 15m

Seoul Gimpo Intl

Sat 9/26

1:50 pm-10:25 am

1 stop22h 35m

$1,077

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/11

Showing 1-10 of 36 resultsSorted by cheapest first
1
2
3
4

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 August.
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 $268). Flying from Chiang Mai to Seoul in November is currently the most expensive (average of $487). 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 August 11, 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.

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 August 11, 2026.

The most flights from CNX to SEL are scheduled on a Monday (4 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (3 on average).

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 3 outbound flights 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 15m. Fly via Thai Vietjet Air, Eastar Jet, or Thai AirAsia 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 Eastar Jet (100%), Air Busan (96%) or Jeju Air (93%) 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 $155. While the most popular route (Chiang Mai - Seoul Gimpo Intl) can be booked for $1,457 on average, our data indicates $652 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 $268). Flying from Chiang Mai to Seoul in November is currently the most expensive (average of $487). 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

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.

Alternative routes for Chiang Mai to Seoul

See prices for flight routes from nearby airports that may be better suited for you.
Suvarnabhumi to Incheon Intl flights
Chiang Mai to Incheon Intl flights

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.