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Cheap flights from Chiang Mai to Seoul from ฿4,138

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 30/11. Fares are subject to change and may not be available on all flights or dates of travel.
CNX — SEL
11 Dec — 18 Dec1
1 adult
1 adult, Economy, 0 bags

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 11 November 2025.

Round-trip from

฿8,083

One-way from

฿4,138

Popular in

October

Cheapest in

September

Average price

฿13,903

Good one-way deal

฿5,018 or less
Air China
  • Air China
  • 12/12-17/12
  • 1 total stop
  • 15h 45m total
  • Chiang Mai to Seoul
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30/11
  • 30/11
  • 1 total stop
  • 14h 20m total
  • Chiang Mai to Seoul
Search Deals
High demand for flights, 2% potential price rise
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Cheapest flight prices on average. 2% potential price decrease (฿11,119 potential savings vs. average return price).
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Average for round-trip flights in November 2025
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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

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 11 November 2025.

Sun 9/1100:45CNX - ICN
Nonstop4h 45mMultiple Airlines
Mon 1/1213:10ICN - CNX
1 stop10h 40mMultiple Airlines
Deal found 8/11฿8,018
Wed 12/1100:45CNX - ICN
Nonstop4h 45mMultiple Airlines
Mon 17/1113:10ICN - CNX
1 stop10h 40mMultiple Airlines
Deal found 10/11฿8,083
Wed 10/1221:25CNX - ICN
Nonstop5h 05mMultiple Airlines
Sun 14/1213:10ICN - CNX
1 stop10h 40mMultiple Airlines
Deal found 10/11฿8,148
Sun 9/1100:45CNX - ICN
Nonstop4h 45mMultiple Airlines
Fri 14/1113:10ICN - CNX
1 stop10h 40mMultiple Airlines
Deal found 9/11฿8,180
Thu 13/1100:45CNX - ICN
Nonstop4h 45mMultiple Airlines
Fri 14/1113:10ICN - CNX
1 stop10h 40mMultiple Airlines
Deal found 9/11฿8,406
Wed 12/1100:45CNX - ICN
Nonstop4h 45mMultiple Airlines
Fri 14/1113:10ICN - CNX
1 stop10h 40mMultiple Airlines
Deal found 9/11฿8,503
Thu 13/1100:45CNX - ICN
Nonstop4h 45mMultiple Airlines
Thu 20/1113:10ICN - CNX
1 stop10h 40mMultiple Airlines
Deal found 9/11฿8,665
Wed 19/1122:35CNX - ICN
1 stop9h 30mMultiple Airlines
Thu 20/1113:10ICN - CNX
1 stop10h 40mMultiple Airlines
Deal found 9/11฿8,697
Tue 18/1121:30CNX - ICN
1 stop10h 35mMultiple Airlines
Thu 20/1113:10ICN - CNX
1 stop10h 40mMultiple Airlines
Deal found 9/11฿8,891
Wed 19/1123:05CNX - GMP
1 stop7h 40mMultiple Airlines
Thu 20/1114:25GMP - CNX
1 stop9h 25mMultiple Airlines
Deal found 9/11฿10,314
Tue 9/1223:05CNX - GMP
1 stop20h 30mMultiple Airlines
Sat 13/1214:25GMP - CNX
1 stop9h 25mMultiple Airlines
Deal found 9/11฿10,475
Wed 10/1223:05CNX - GMP
1 stop8h 00mMultiple Airlines
Wed 17/1214:25GMP - CNX
1 stop9h 25mMultiple Airlines
Deal found 10/11฿10,605

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 11 November 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

Fri 12/12

21:25-04:30

Nonstop5h 05m

Incheon Intl

Tue 16/12

16:25-20:25

Nonstop6h 00m

฿9,118

Chiang MaiIncheon

CNX - ICN

CNXICN

Chiang Mai

Wed 10/12

21:25-04:30

Nonstop5h 05m

Incheon Intl

Wed 17/12

16:25-20:25

Nonstop6h 00m

฿9,570

Chiang MaiSeoul

CNX - GMP

CNXGMP

Chiang Mai

Tue 9/12

23:05-21:35

1 stop20h 30m

Seoul Gimpo Intl

Sat 13/12

14:25-21:50

1 stop9h 25m

฿10,475

Chiang MaiIncheon

CNX - ICN

CNXICN

Chiang Mai

Fri 12/12

21:25-04:30

Nonstop5h 05m

Incheon Intl

Mon 15/12

02:20-09:50

1 stop9h 30m

฿10,605

Chiang MaiSeoul

CNX - GMP

CNXGMP

Chiang Mai

Wed 10/12

23:05-09:05

1 stop8h 00m

Seoul Gimpo Intl

Wed 17/12

14:25-21:50

1 stop9h 25m

฿10,605

Chiang MaiIncheon

CNX - ICN

CNXICN

Chiang Mai

Tue 25/11

21:50-05:30

Nonstop5h 40m

Incheon Intl

Sat 29/11

19:10-23:45

Nonstop6h 35m

฿10,702

Chiang MaiIncheon

CNX - ICN

CNXICN

Chiang Mai

Thu 4/12

16:25-10:55

2 stops16h 30m

Incheon Intl

Sun 7/12

13:10-21:50

1 stop10h 40m

฿10,734

Chiang MaiIncheon

CNX - ICN

CNXICN

Chiang Mai

Sat 14/3

10:05-11:00

3 stops22h 55m

Incheon Intl

Sat 28/3

07:25-15:25

1 stop10h 00m

฿10,928

Chiang MaiIncheon

CNX - ICN

CNXICN

Chiang Mai

Thu 25/12

10:05-11:00

3 stops22h 55m

Incheon Intl

Tue 30/12

07:25-15:25

1 stop10h 00m

฿10,993

Chiang MaiIncheon

CNX - ICN

CNXICN

Chiang Mai

Sat 27/12

10:05-10:55

2 stops22h 50m

Incheon Intl

Mon 29/12

16:40-09:05

2 stops18h 25m

฿11,122

Flights are sorted by cheapest return flights first.

Deals found on 10/11

Showing 1-10 of 40 results
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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 ฿4,365). Flying from Chiang Mai to Seoul in November is currently the most expensive (average of ฿11,381). 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 11 November 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 11 November 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 (5 on average).

What’s the top stopover airport for flights from Chiang Mai to Seoul?

Share of one-stop return flights from Chiang Mai to Seoul chosen by Cheapflights users in the past 12 months, using the same stopover each way.

Guangzhou (CAN) – chosen by Cheapflights users on 50% of one-stop itineraries from Chiang Mai to Seoul on Cheapflights.

What’s the cheapest stopover airport for flights from Chiang Mai to Seoul?

Average return fare for one-stop flights from Chiang Mai to Seoul, chosen by Cheapflights users in the past 12 months, with the same stopover each way.

Guangzhou (CAN) is the most affordable one-stop option, with an average return flight price of ฿8,124.

What’s the fastest stopover option from Chiang Mai to Seoul?

Shortest average travel time for one-stop one-way flights from Chiang Mai to Seoul, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.

Flights via Beijing (PEK) have the shortest average one-way travel time for one-stop routes: 10h 35m.

Which airport typically offers the quickest stopover for flights from Chiang Mai to Seoul?

Average stopover duration for one-stop one-way flights from Chiang Mai to Seoul, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Beijing (PEK) offer the fastest connection on this route, with an average stopover time of 2h 58m.

Reviews of airlines servicing Seoul

Get insights into the airlines that provide service to Seoul. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Seoul. Reviews last updated 11 November 2025.
Check out reviews from past customers who have flown with Korean Air and Jeju Air from Chiang Mai to Seoul to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very Good
1,162 reviews
Check prices

Boarding

8.5

Crew

8.7

Comfort

8.3

Overall

8.4

Entertainment

8.2

Food

8.1

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Korean Air
8.4
Very Good
1,162 reviews
Korean Air
8.4
Very Good
1,162 reviews
Check prices

Boarding

8.5

Crew

8.7

Comfort

8.3

Overall

8.4

Entertainment

8.2

Food

8.1

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Jeju Air
7.7
Good
34 reviews
Korean Air
8.4
Very Good
1,162 reviews
Check prices

Boarding

8.5

Crew

8.7

Comfort

8.3

Overall

8.4

Entertainment

8.2

Food

8.1

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.

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 5 outbound flights to Seoul per day. You should also have plenty of airline options to choose from since 2 airlines have 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 popular is this Chiang Mai to Seoul flight route?

    The Chiang Mai to Seoul flight path was viewed by 89 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 5h 05m. Fly via T'way 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 are the cheapest airlines flying from Chiang Mai to Seoul round-trip?

    Currently priced at ฿9,766, Jeju Air will fly you from Chiang Mai to Seoul and back. In addition to Jeju Air, many other airlines offer competitively priced options for your trip. Check Cheapflights for deals on Korean Air for as low as ฿18,874. Jeju Air is currently priced 24% below the average price you’ll pay for this route.

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

    The cheapest airline one-way is แอร์เอเชีย, with whom users have recently found tickets for as low as ฿4,332. However, be on the lookout for offers from T'way Air and Thai Vietjet Air, 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?

    The top 3 most reliable airlines when flying from Chiang Mai to Seoul are Eastar Jet (93%), เดลต้า (93%) and Korean Air (90%).

  • 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 ฿13,492, our data indicates the cheapest price to be ฿5,018. The most popular route (Chiang Mai - Incheon Intl), is priced around ฿8,051.

  • 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 ฿4,365). Flying from Chiang Mai to Seoul in November is currently the most expensive (average of ฿11,381). 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

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Fly from Chiang Mai to Seoul on these airlines

Choose from the following airlines for your flight from Chiang Mai to Seoul. Flights are based on user searches made on Cheapflights and were last updated on 11 November 2025.
Jeju Air flights from Chiang Mai to Seoul
Korean Air flights from Chiang Mai to Seoul

Top 2 airlines flying from Chiang Mai to Seoul

Discover the top 2 airlines 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 11 November 2025.
AirlineCheapestAverageFlexibilityOn-time
Jeju AirCheapest฿9,766Average฿15,786FlexibilityNo cancel feeOn-timeN/A
Search Jeju Air flights
Korean AirCheapest฿18,874Average฿20,030FlexibilityNo cancel feeOn-time81%
Search Korean Air 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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