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Cheap flights from Chiang Mai to Seoul from ฿4,055

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 19/7. Fares are subject to change and may not be available on all flights or dates of travel.
CNX — SEL
7 Jul — 14 Jul1
1 adult

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 2 July 2025.

Round-trip from

฿7,201

One-way from

฿4,055

Popular in

January

Cheapest in

May

Average price

฿13,430

Good round-trip deal

฿32,248 or less

Good one-way deal

฿17,603 or less
Jeju Air
  • Jeju Air
  • 21/8-3/9
  • 1 total stop
  • 17h 45m total
  • Chiang Mai to Seoul
Search Deals
Thai AirAsia
  • Thai AirAsia
  • 19/7
  • 1 total stop
  • 16h 45m total
  • Chiang Mai to Seoul
Search Deals
Highest demand for flights based on searches. 18% potential increase in price (฿89,420 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (฿11,822 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 2025
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).
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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 2 July 2025.

Thu 21/820:10CNX - ICN
1 stop12h 10mMultiple Airlines
Wed 3/918:00ICN - CNX
Nonstop5h 35mMultiple Airlines
Deal found 29/6฿7,201
Sat 13/918:50CNX - ICN
1 stop18h 35mChina Southern
Sat 20/916:45ICN - CNX
1 stop27h 05mChina Southern
Deal found 30/6฿9,472
Thu 7/823:05CNX - GMP
1 stop12h 00mAir China
Mon 11/814:25GMP - CNX
1 stop9h 25mAir China
Deal found 1/7฿11,646
Wed 10/916:20CNX - GMP
2 stops16h 40mChina Eastern
Wed 17/920:50GMP - CNX
2 stops20h 30mChina Eastern
Deal found 1/7฿11,743
Sat 23/819:25CNX - GMP
2 stops11h 25mMultiple Airlines
Sun 24/815:50GMP - CNX
1 stop8h 20mMultiple Airlines
Deal found 2/7฿14,662
Thu 10/711:35CNX - GMP
1 stop23h 15mEVA Air
Fri 8/813:50GMP - CNX
2 stops23h 25mEVA Air
Deal found 2/7฿21,248

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 2 July 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 21/8

20:10-10:20

1 stop12h 10m

Incheon Intl

Wed 3/9

18:00-21:35

Nonstop5h 35m

฿7,201

Chiang MaiIncheon

CNX - ICN

CNXICN

Chiang Mai

Sat 13/9

18:50-15:25

1 stop18h 35m

Incheon Intl

Sat 20/9

16:45-17:50

1 stop27h 05m

฿9,472

Chiang MaiSeoul

CNX - GMP

CNXGMP

Chiang Mai

Thu 7/8

23:05-13:05

1 stop12h 00m

Seoul Gimpo Intl

Mon 11/8

14:25-21:50

1 stop9h 25m

฿11,646

Chiang MaiSeoul

CNX - GMP

CNXGMP

Chiang Mai

Wed 10/9

16:20-11:00

2 stops16h 40m

Seoul Gimpo Intl

Wed 17/9

20:50-15:20

2 stops20h 30m

฿11,743

Chiang MaiSeoul

CNX - GMP

CNXGMP

Chiang Mai

Sat 23/8

19:25-08:50

2 stops11h 25m

Seoul Gimpo Intl

Sun 24/8

15:50-22:10

1 stop8h 20m

฿14,662

Chiang MaiIncheon

CNX - ICN

CNXICN

Chiang Mai

Sat 19/7

15:35-10:20

1 stop16h 45m

฿4,055

Chiang MaiIncheon

CNX - ICN

CNXICN

Chiang Mai

Sat 19/7

23:30-10:20

1 stop8h 50m

฿4,087

Chiang MaiIncheon

CNX - ICN

CNXICN

Chiang Mai

Thu 11/9

01:20-23:45

1 stop20h 25m

฿4,379

Chiang MaiIncheon

CNX - ICN

CNXICN

Chiang Mai

Sun 7/9

10:30-11:50

1 stop23h 20m

฿4,444

Chiang MaiIncheon

CNX - ICN

CNXICN

Chiang Mai

Wed 9/7

22:35-05:50

Nonstop5h 15m

฿5,385

Flights are sorted by cheapest return flights first.

Deals found on 1/7

Showing 1-10 of 15 results
1
2

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 2 July 2025.

It’s typically best to fly out from Chiang Mai to Seoul in the morning. Doing so could potentially save you 18% 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 2 July 2025.

The most flights from CNX to SEL are scheduled on a Monday (6 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (3 on average).

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

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 2 July 2025.
Check out reviews from past customers who have flown with Japan Airlines, China Southern, andThai AirAsia 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.
Japan Airlines
8.3
Very Good
1,505 reviews
Check prices

Boarding

8.4

Crew

8.7

Entertainment

7.8

Food

7.7

Overall

8.3

Comfort

8.2

Reviews

1 / 20
4.0
Okay

Anonymous,May 2025

DEL - HND

1. No information on business class lounge access in Delhi airport. 2. Special meals ordered confirmed in JAL website but not in confirmation email. So meal Was not served on the flight.
Japan Airlines
8.3
Very Good
1,505 reviews
Japan Airlines
8.3
Very Good
1,505 reviews
Check prices

Boarding

8.4

Crew

8.7

Entertainment

7.8

Food

7.7

Overall

8.3

Comfort

8.2

Reviews

1 / 20
4.0
Okay

Anonymous,May 2025

DEL - HND

1. No information on business class lounge access in Delhi airport. 2. Special meals ordered confirmed in JAL website but not in confirmation email. So meal Was not served on the flight.
China Southern
7.6
Good
100 reviews
Japan Airlines
8.3
Very Good
1,505 reviews
Check prices

Boarding

8.4

Crew

8.7

Entertainment

7.8

Food

7.7

Overall

8.3

Comfort

8.2

Reviews

1 / 20
4.0
Okay

Anonymous,May 2025

DEL - HND

1. No information on business class lounge access in Delhi airport. 2. Special meals ordered confirmed in JAL website but not in confirmation email. So meal Was not served on the flight.
Thai AirAsia
7.5
Good
217 reviews
Japan Airlines
8.3
Very Good
1,505 reviews
Check prices

Boarding

8.4

Crew

8.7

Entertainment

7.8

Food

7.7

Overall

8.3

Comfort

8.2

Reviews

1 / 20
4.0
Okay

Anonymous,May 2025

DEL - HND

1. No information on business class lounge access in Delhi airport. 2. Special meals ordered confirmed in JAL website but not in confirmation email. So meal Was not served on the flight.
Air China
7.2
Good
92 reviews
Japan Airlines
8.3
Very Good
1,505 reviews
Check prices

Boarding

8.4

Crew

8.7

Entertainment

7.8

Food

7.7

Overall

8.3

Comfort

8.2

Reviews

1 / 20
4.0
Okay

Anonymous,May 2025

DEL - HND

1. No information on business class lounge access in Delhi airport. 2. Special meals ordered confirmed in JAL website but not in confirmation email. So meal Was not served on the flight.

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 4 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.

  • What are the cheapest airlines flying from Chiang Mai to Seoul round-trip?

    Currently priced at ฿9,472, China Southern will fly you from Chiang Mai to Seoul and back. In addition to China Southern, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Air China and China Eastern - these airlines can fly you to your destination from ฿11,646 and ฿11,743, respectively. China Southern is currently priced 21% 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 Thai AirAsia, with whom users have recently found tickets for as low as ฿4,055. However, be on the lookout for offers from Cebu Pacific and HK Express, 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 Thai Airways (93%), Asiana Airlines (93%) and เดลต้า (92%).

  • 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 ฿32,613, our data indicates the cheapest price to be ฿13,327. The most popular route (Chiang Mai - Incheon Intl), is priced around ฿8,564.

  • 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 2 July 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 2 July 2025.
AirlineCheapestAverageFlexibilityOn-time
Eastar JetCheapest฿4,375Average฿10,867FlexibilityNo cancel feeOn-time86%
Search Eastar Jet flights
Jeju AirCheapest฿6,922Average฿15,839FlexibilityNo cancel feeOn-timeN/A
Search Jeju Air flights
Korean AirCheapest฿15,837Average฿19,180FlexibilityNo cancel feeOn-time81%
Search Korean Air flights

Fly with Cheapflights

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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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