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Cheap flights from Chiang Mai to Seoul from ฿5,194

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 1/7. Fares are subject to change and may not be available on all flights or dates of travel.
CNX — SEL
27 Apr — 4 May1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Chiang Mai to Seoul

Enter your travel dates to find the best prices.

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 28 March 2026.

Mon 11/522:55
CNX
-
ICN
1 stop9h 40m
Thai AirAsia
Mon 18/512:05
ICN
-
CNX
1 stop9h 25m
Thai AirAsia
Deal found 27/3฿6,805
Wed 6/522:55
CNX
-
ICN
1 stop9h 40m
Thai AirAsia
Tue 19/512:05
ICN
-
CNX
1 stop12h 20m
Thai AirAsia
Deal found 24/3฿6,837
Wed 6/522:55
CNX
-
ICN
1 stop9h 40m
Thai AirAsia
Mon 18/512:05
ICN
-
CNX
1 stop9h 25m
Thai AirAsia
Deal found 24/3฿7,035
Sat 23/521:45
CNX
-
ICN
Nonstop5h 20m
Multiple Airlines
Sun 31/518:10
ICN
-
CNX
Nonstop5h 50m
Multiple Airlines
Deal found 26/3฿7,363
Thu 21/500:50
CNX
-
ICN
Nonstop5h 25m
Air Busan
Wed 27/519:55
ICN
-
CNX
Nonstop5h 55m
Air Busan
Deal found 26/3฿7,528
Sat 23/521:45
CNX
-
ICN
Nonstop5h 20m
Multiple Airlines
Wed 27/518:30
ICN
-
CNX
Nonstop6h 10m
Multiple Airlines
Deal found 24/3฿7,561
Wed 22/422:55
CNX
-
ICN
1 stop9h 40m
Multiple Airlines
Sun 3/518:30
ICN
-
CNX
Nonstop6h 10m
Multiple Airlines
Deal found 26/3฿7,922
Wed 6/522:55
CNX
-
ICN
1 stop9h 40m
Multiple Airlines
Sun 17/518:30
ICN
-
CNX
Nonstop6h 10m
Multiple Airlines
Deal found 24/3฿7,988
Thu 21/500:50
CNX
-
ICN
Nonstop5h 25m
Air Busan
Sun 28/619:55
ICN
-
CNX
Nonstop5h 55m
Air Busan
Deal found 26/3฿8,120
Sat 23/500:50
CNX
-
ICN
Nonstop5h 25m
Air Busan
Thu 28/519:55
ICN
-
CNX
Nonstop5h 55m
Air Busan
Deal found 25/3฿8,152
Thu 7/522:55
CNX
-
ICN
1 stop9h 40m
Multiple Airlines
Sun 10/518:10
ICN
-
CNX
Nonstop5h 50m
Multiple Airlines
Deal found 27/3฿8,218
Wed 6/522:55
CNX
-
ICN
1 stop9h 40m
Multiple Airlines
Thu 21/518:30
ICN
-
CNX
Nonstop6h 10m
Multiple Airlines
Deal found 24/3฿8,415

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 28 March 2026.

Round-trip from

฿6,805

One-way from

฿5,194

Popular in

October

Cheapest in

May

Average price

฿10,190

Good round-trip deal

฿9,813 or less

Good one-way deal

฿5,102 or less
Thai AirAsia
  • Thai AirAsia
  • 11/5-18/5
  • 2 total stops
  • 19h 05m total
  • Chiang Mai to Seoul
Search Deals
Air Busan
  • Air Busan
  • 1/7
  • Nonstop
  • 5h 25m total
  • Chiang Mai to Seoul
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (฿34,425 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (฿11,531 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 2026
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

 
Customise 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 17,341 searches. Data last updated 28 March 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 return flight

Chiang MaiIncheon

CNX - ICN

CNXICN

Chiang Mai

Thu 11/6

23:55-07:10

Nonstop5h 15m

Incheon Intl

Sun 14/6

18:30-22:40

Nonstop6h 10m

฿11,801
Fastest return journey

Chiang MaiIncheon

CNX - ICN

CNXICN

Chiang Mai

Tue 1/9

21:45-05:05

Nonstop5h 20m

Incheon Intl

Tue 15/9

17:20-20:45

Nonstop5h 25m

฿11,966

Chiang MaiIncheon

CNX - ICN

CNXICN

Chiang Mai

Tue 1/9

21:45-05:05

Nonstop5h 20m

Incheon Intl

Mon 14/9

17:20-20:45

Nonstop5h 25m

฿11,966

Chiang MaiIncheon

CNX - ICN

CNXICN

Chiang Mai

Thu 4/6

23:55-07:10

Nonstop5h 15m

Incheon Intl

Sat 20/6

18:30-22:40

Nonstop6h 10m

฿12,623

Chiang MaiIncheon

CNX - ICN

CNXICN

Chiang Mai

Thu 11/6

18:45-10:55

1 stop14h 10m

Incheon Intl

Sun 14/6

13:30-12:20

1 stop24h 50m

฿13,018

Chiang MaiIncheon

CNX - ICN

CNXICN

Chiang Mai

Thu 11/6

16:10-22:45

1 stop28h 35m

Incheon Intl

Sun 14/6

12:00-15:20

2 stops29h 20m

฿13,149

Chiang MaiIncheon

CNX - ICN

CNXICN

Chiang Mai

Fri 22/5

11:20-19:05

1 stop29h 45m

Incheon Intl

Mon 29/6

12:45-10:20

1 stop23h 35m

฿14,990

Chiang MaiSeoul

CNX - GMP

CNXGMP

Chiang Mai

Thu 3/9

23:05-13:05

1 stop12h 00m

Seoul Gimpo Intl

Thu 10/9

14:25-21:50

1 stop9h 25m

฿25,969

Chiang MaiSeoul

CNX - GMP

CNXGMP

Chiang Mai

Thu 21/5

10:05-11:00

3 stops22h 55m

Seoul Gimpo Intl

Sun 24/5

20:50-09:15

2 stops38h 25m

฿26,199

Chiang MaiSeoul

CNX - GMP

CNXGMP

Chiang Mai

Thu 2/7

16:10-11:00

2 stops40h 50m

Seoul Gimpo Intl

Sun 5/7

20:50-15:20

3 stops44h 30m

฿26,495

Flights are sorted by cheapest return flights first.

Deals found on 27/3

Showing 1-10 of 36 resultsSorted by cheapest first
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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 return 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 ฿2,893). Flying from Chiang Mai to Seoul in January is currently the most expensive (average of ฿11,966). 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 28 March 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 for a return flight 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?

    Chiang Mai (CNX) is the airport you will fly out of if you book a flight from Chiang Mai to Seoul. You should not have trouble finding flights to Seoul from Chiang Mai; the airport handles an average of 1 outbound flight to Seoul per day. You should also have plenty of airline options to choose from since 1 airline has flights from the Chiang Mai airport to Seoul. It is only a 3.1 km journey to Chiang Mai (CNX) from Chiang Mai’s city centre.

  • 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 Eastar Jet, Jin Air, or Air China to get the fastest option. Airlines will cover a distance of 3378 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • What is the cheapest airline to fly from Chiang Mai to Seoul round-trip?

    Currently priced at ฿5,765, Eastar Jet will fly you from Chiang Mai to Seoul and back. In addition to Eastar Jet, many other airlines offer competitively priced options for your trip. Eastar Jet is currently priced 56% below the average price you’ll pay for this route.

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

    The top 3 most reliable airlines when flying from Chiang Mai to Seoul are Jeju Air (84%), Eastar Jet (84%) and เดลต้า (82%).

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

    Looking for the cheapest flight from Chiang Mai to Seoul? While on average our users pay ฿17,994, our data indicates the cheapest price to be ฿5,102. The most popular route (Chiang Mai - Incheon Intl), is priced around ฿6,969.

  • 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 holiday 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 ฿2,893). Flying from Chiang Mai to Seoul in January is currently the most expensive (average of ฿11,966). 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.
Chiang Mai to Incheon Intl flights
Phuket City to Incheon Intl flights
Chiang Mai to Busan flights

Top airline flying from Chiang Mai to Seoul

Discover the top airline that operate flights from Chiang Mai to Seoul. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 17,341 searches. Data last updated 28 March 2026.
AirlineCheapestAverageFlexibilityOn-time
Eastar JetCheapest฿5,765Average฿11,823FlexibilityNo cancel feeOn-time86%
Search Eastar Jet flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Chiang Mai to Seoul?

Cheapflights makes it easy to find Chiang Mai to Seoul flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Chiang Mai to Seoul?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Chiang Mai to Seoul.

Can Cheapflights find flights from Chiang Mai to Seoul with no change fees?

Yes! Cheapflights helps users easily find flights from Chiang Mai to Seoul with no change fees.

Can Cheapflights notify me if prices for flights from Chiang Mai to Seoul become cheaper?

Yes, Cheapflights offers price alerts on Chiang Mai to Seoul flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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