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Cheap flights from Chiang Mai to Seoul from ฿3,392

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 25/11. Fares are subject to change and may not be available on all flights or dates of travel.
CNX — SEL
13 Oct — 20 Oct1
1 adult
1 adult, Economy

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 13 September 2025.

Round-trip from

฿7,070

One-way from

฿3,392

Popular in

August

Cheapest in

May

Average price

฿11,224

Good round-trip deal

฿31,680 or less

Good one-way deal

฿4,921 or less
1/10-20/10
  • 1/10-20/10
  • 2 total stops
  • 24h 25m total
  • Chiang Mai to Seoul
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25/11
  • 25/11
  • 1 total stop
  • 13h 10m total
  • Chiang Mai to Seoul
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Highest demand for flights based on searches. 11% potential increase in price (฿50,906 potential increase over avg. return price).
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Cheapest flight prices on average. 2% potential price decrease (฿10,476 potential savings vs. average return price).
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Average for round-trip flights in September 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 13 September 2025.

Sat 13/923:30CNX - ICN
1 stop8h 50mMultiple Airlines
Wed 17/918:30ICN - CNX
Nonstop6h 10mMultiple Airlines
Deal found 11/9฿6,563
Sat 13/923:30CNX - ICN
1 stop8h 50mMultiple Airlines
Sun 14/918:30ICN - CNX
Nonstop6h 10mMultiple Airlines
Deal found 11/9฿6,626
Wed 17/923:55CNX - ICN
Nonstop5h 15mEastar Jet
Thu 18/918:30ICN - CNX
Nonstop6h 10mEastar Jet
Deal found 10/9฿6,753
Sat 13/923:55CNX - ICN
Nonstop5h 15mEastar Jet
Wed 17/918:30ICN - CNX
Nonstop6h 10mEastar Jet
Deal found 11/9฿6,785
Sat 13/923:55CNX - ICN
Nonstop5h 15mEastar Jet
Sun 14/918:30ICN - CNX
Nonstop6h 10mEastar Jet
Deal found 11/9฿6,848
Wed 1/1022:20CNX - ICN
1 stop9h 00mMultiple Airlines
Mon 20/1018:00ICN - CNX
1 stop15h 25mMultiple Airlines
Deal found 11/9฿7,070
Thu 18/923:30CNX - ICN
1 stop8h 50mMultiple Airlines
Wed 24/918:00ICN - CNX
Nonstop5h 35mMultiple Airlines
Deal found 11/9฿7,261
Thu 25/923:30CNX - ICN
1 stop8h 50mMultiple Airlines
Wed 8/1018:30ICN - CNX
Nonstop6h 10mMultiple Airlines
Deal found 11/9฿7,482
Wed 17/918:25CNX - ICN
1 stop11h 15mMultiple Airlines
Thu 18/918:30ICN - CNX
Nonstop6h 10mMultiple Airlines
Deal found 10/9฿7,704
Thu 20/1123:05CNX - GMP
1 stop12h 00mAir China
Mon 24/1114:25GMP - CNX
1 stop9h 25mAir China
Deal found 12/9฿11,477
Tue 28/1023:05CNX - GMP
1 stop12h 00mAir China
Sat 8/1114:25GMP - CNX
1 stop9h 25mAir China
Deal found 11/9฿11,572
Fri 31/1023:05CNX - GMP
1 stop12h 00mAir China
Fri 7/1114:25GMP - CNX
1 stop9h 25mAir China
Deal found 11/9฿12,016

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 13 September 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 20/11

18:50-13:50

1 stop17h 00m

Incheon Intl

Mon 24/11

22:55-14:35

1 stop17h 40m

฿8,687

Chiang MaiIncheon

CNX - ICN

CNXICN

Chiang Mai

Wed 1/10

22:20-09:20

1 stop9h 00m

Incheon Intl

Thu 30/10

19:10-23:45

Nonstop6h 35m

฿8,941

Chiang MaiIncheon

CNX - ICN

CNXICN

Chiang Mai

Sun 19/10

19:25-11:50

1 stop14h 25m

Incheon Intl

Mon 20/10

18:00-21:35

Nonstop5h 35m

฿9,004

Chiang MaiIncheon

CNX - ICN

CNXICN

Chiang Mai

Mon 20/10

10:30-21:35

1 stop9h 05m

Incheon Intl

Fri 24/10

11:55-21:50

1 stop11h 55m

฿9,290

Chiang MaiIncheon

CNX - ICN

CNXICN

Chiang Mai

Fri 31/10

18:50-20:35

1 stop23h 45m

Incheon Intl

Fri 7/11

10:55-17:50

1 stop8h 55m

฿10,843

Chiang MaiIncheon

CNX - ICN

CNXICN

Chiang Mai

Wed 15/10

10:05-11:00

3 stops22h 55m

Incheon Intl

Sun 19/10

16:35-13:25

2 stops22h 50m

฿10,938

Chiang MaiIncheon

CNX - ICN

CNXICN

Chiang Mai

Fri 26/9

17:45-07:40

1 stop11h 55m

Incheon Intl

Mon 6/10

18:00-21:35

Nonstop5h 35m

฿11,002

Chiang MaiIncheon

CNX - ICN

CNXICN

Chiang Mai

Mon 20/10

16:20-13:15

3 stops18h 55m

Incheon Intl

Fri 24/10

20:15-13:25

2 stops19h 10m

฿11,414

Chiang MaiSeoul

CNX - GMP

CNXGMP

Chiang Mai

Thu 20/11

23:05-13:05

1 stop12h 00m

Seoul Gimpo Intl

Mon 24/11

14:25-21:50

1 stop9h 25m

฿11,477

Chiang MaiSeoul

CNX - GMP

CNXGMP

Chiang Mai

Tue 16/12

23:05-13:05

1 stop12h 00m

Seoul Gimpo Intl

Tue 23/12

14:25-21:50

1 stop9h 25m

฿11,477

Flights are sorted by cheapest return flights first.

Deals found on 12/9

Showing 1-10 of 39 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, June is the cheapest month in which you can book a flight from Chiang Mai to Seoul (average of ฿152). Flying from Chiang Mai to Seoul in January is currently the most expensive (average of ฿388). 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 13 September 2025.

It’s typically best to fly out from Chiang Mai to Seoul in the morning. Doing so could potentially save you 31% on the flight price compared to flying at midday, which is usually more expensive.

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 13 September 2025.

The most flights from CNX to SEL are scheduled on a Wednesday (7 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (4 on average).

How much does it cost for a return flight from Chiang Mai to Seoul?

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 ฿7,967.

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 13 September 2025.
Check out reviews from past customers who have flown with Korean 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
1,139 reviews
Check prices

Crew

8.7

Overall

8.4

Boarding

8.5

Food

8.1

Entertainment

8.2

Comfort

8.3

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
1,139 reviews
Korean Air
8.4
Very Good
1,139 reviews
Check prices

Crew

8.7

Overall

8.4

Boarding

8.5

Food

8.1

Entertainment

8.2

Comfort

8.3

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 3 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 12h. Fly via China Southern or Air China to get the fastest option. Airlines will cover a distance of 3412 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 ฿4,276, 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. Search Cheapflights for deals from Jeju Air and Korean Air - these airlines can fly you to your destination from ฿6,765 and ฿16,530, respectively. Eastar Jet is currently priced 66% 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 เดลต้า (81%), Jeju Air (76%) and Korean Air (74%).

  • 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 ฿20,516, our data indicates the cheapest price to be ฿4,921. The most popular route (Chiang Mai - Incheon Intl), is priced around ฿7,387.

  • 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, June is the cheapest month in which you can book a flight from Chiang Mai to Seoul (average of ฿152). Flying from Chiang Mai to Seoul in January is currently the most expensive (average of ฿388). 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 13 September 2025.
Jeju Air flights from Chiang Mai to Seoul
Korean Air flights from Chiang Mai to Seoul

Top 3 airlines flying from Chiang Mai to Seoul

Discover the top 3 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 13 September 2025.
AirlineCheapestAverageFlexibilityOn-time
Eastar JetCheapest฿4,276Average฿10,503FlexibilityNo cancel feeOn-time86%
Search Eastar Jet flights
Jeju AirCheapest฿6,765Average฿15,480FlexibilityNo cancel feeOn-timeN/A
Search Jeju Air flights
Korean AirCheapest฿16,530Average฿18,746FlexibilityNo 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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