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Cheap flights from Chiang Mai to Seoul from ฿3,221

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 5/3. Fares are subject to change and may not be available on all flights or dates of travel.
CNX — SEL
12 Jan — 19 Jan1
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 13 December 2025.

Sat 13/1221:40CNX - ICN
Nonstop5h 05mMultiple Airlines
Wed 17/1217:55ICN - CNX
1 stop16h 45mMultiple Airlines
Deal found 12/12฿8,085
Thu 18/1221:25CNX - ICN
Nonstop5h 05mMultiple Airlines
Wed 11/307:35ICN - CNX
1 stop27h 05mMultiple Airlines
Deal found 10/12฿8,401
Thu 18/1221:25CNX - ICN
Nonstop5h 05mMultiple Airlines
Sat 14/311:20ICN - CNX
1 stop27h 05mMultiple Airlines
Deal found 11/12฿8,748
Sun 14/1221:40CNX - ICN
Nonstop5h 05mMultiple Airlines
Sat 20/1207:35ICN - CNX
1 stop27h 05mMultiple Airlines
Deal found 13/12฿8,780
Fri 12/1221:40CNX - ICN
Nonstop5h 05mMultiple Airlines
Sun 11/114:40ICN - CNX
1 stop9h 10mMultiple Airlines
Deal found 10/12฿9,317
Thu 18/1200:45CNX - ICN
Nonstop4h 45mMultiple Airlines
Sat 20/1207:35ICN - CNX
1 stop27h 05mMultiple Airlines
Deal found 11/12฿9,664
Wed 31/1222:10CNX - ICN
1 stop9h 55mMultiple Airlines
Thu 1/116:10ICN - CNX
1 stop24h 10mMultiple Airlines
Deal found 11/12฿9,790
Mon 22/1223:05CNX - GMP
1 stop7h 40mMultiple Airlines
Thu 25/1219:10GMP - CNX
1 stop28h 50mMultiple Airlines
Deal found 12/12฿11,590
Thu 11/1201:40CNX - GMP
2 stops18h 15mMultiple Airlines
Sat 13/1214:50GMP - CNX
1 stop9h 10mMultiple Airlines
Deal found 11/12฿14,022
Tue 16/1223:05CNX - GMP
1 stop7h 40mMultiple Airlines
Tue 23/1215:20GMP - CNX
1 stop8h 40mMultiple Airlines
Deal found 12/12฿15,412
Sun 21/1223:05CNX - GMP
1 stop12h 00mMultiple Airlines
Wed 24/1207:20GMP - CNX
1 stop16h 40mMultiple Airlines
Deal found 12/12฿16,328
Thu 18/1201:40CNX - GMP
2 stops18h 20mMultiple Airlines
Fri 26/1208:05GMP - CNX
1 stop15h 55mMultiple Airlines
Deal found 12/12฿17,275

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 13 December 2025.

Round-trip from

฿6,790

One-way from

฿3,221

Popular in

October

Cheapest in

September

Average price

฿14,370

Good round-trip deal

฿37,143 or less

Good one-way deal

฿4,902 or less
27/5-16/6
  • 27/5-16/6
  • 2 total stops
  • 19h 10m total
  • Chiang Mai to Seoul
Search Deals
5/3
  • 5/3
  • 1 total stop
  • 13h 10m total
  • Chiang Mai to Seoul
Search Deals
Highest demand for flights based on searches. 1% potential increase in price (฿7,185 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (฿12,332 potential savings vs. average return price).
Search Deals
Average for round-trip flights in December 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).
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 13 December 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

Wed 27/5

23:30-10:05

1 stop8h 35m

Incheon Intl

Tue 16/6

08:15-16:50

1 stop10h 35m

฿6,790

Chiang MaiIncheon

CNX - ICN

CNXICN

Chiang Mai

Thu 5/3

17:45-10:05

1 stop14h 20m

Incheon Intl

Fri 13/3

17:55-08:40

1 stop16h 45m

฿6,885

Chiang MaiIncheon

CNX - ICN

CNXICN

Chiang Mai

Sat 17/1

10:05-10:55

3 stops22h 50m

Incheon Intl

Sat 24/1

17:55-08:40

1 stop16h 45m

฿8,338

Chiang MaiIncheon

CNX - ICN

CNXICN

Chiang Mai

Mon 19/1

10:05-10:55

3 stops22h 50m

Incheon Intl

Thu 22/1

17:55-08:40

1 stop16h 45m

฿8,401

Chiang MaiIncheon

CNX - ICN

CNXICN

Chiang Mai

Thu 22/1

10:05-10:55

3 stops22h 50m

Incheon Intl

Mon 26/1

07:25-09:05

1 stop27h 40m

฿8,527

Chiang MaiIncheon

CNX - ICN

CNXICN

Chiang Mai

Mon 26/1

10:05-10:55

3 stops22h 50m

Incheon Intl

Thu 29/1

07:25-09:05

1 stop27h 40m

฿8,559

Chiang MaiIncheon

CNX - ICN

CNXICN

Chiang Mai

Fri 23/1

16:25-10:55

2 stops16h 30m

Incheon Intl

Tue 27/1

13:15-09:05

2 stops21h 50m

฿8,590

Chiang MaiIncheon

CNX - ICN

CNXICN

Chiang Mai

Sat 17/1

10:05-10:55

3 stops22h 50m

Incheon Intl

Sat 24/1

16:40-14:20

2 stops23h 40m

฿8,685

Chiang MaiSeoul

CNX - GMP

CNXGMP

Chiang Mai

Fri 13/3

23:05-13:05

1 stop12h 00m

Seoul Gimpo Intl

Tue 17/3

14:25-21:50

1 stop9h 25m

฿11,496

Chiang MaiSeoul

CNX - GMP

CNXGMP

Chiang Mai

Thu 12/3

23:05-13:05

1 stop12h 00m

Seoul Gimpo Intl

Mon 16/3

14:25-21:50

1 stop9h 25m

฿11,906

Flights are sorted by cheapest return flights first.

Deals found on 11/12

Showing 1-10 of 42 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 ฿4,264). Flying from Chiang Mai to Seoul in November is currently the most expensive (average of ฿10,864). 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 December 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 13 December 2025.

The most flights from CNX to SEL are scheduled on a Monday (7 on average). You will have fewer flight options on Tuesday, 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?

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 December 2025.
Check out reviews from past customers who have flown with 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.
Jeju Air
7.6
Good
36 reviews
Check prices

Boarding

8.0

Food

6.0

Comfort

7.6

Overall

7.6

Crew

8.4

Entertainment

6.0
Jeju Air
7.6
Good
36 reviews
Jeju Air
7.6
Good
36 reviews
Check prices

Boarding

8.0

Food

6.0

Comfort

7.6

Overall

7.6

Crew

8.4

Entertainment

6.0

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 6 outbound flights 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 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 Air China to get the fastest option. Airlines will cover a distance of 3412 km.

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

    Currently priced at ฿5,670, 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. Jeju Air is currently priced 54% 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 Eastar Jet (96%), Thai Airways (92%) and Asiana Airlines (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 ฿21,019, our data indicates the cheapest price to be ฿4,902. The most popular route (Chiang Mai - Incheon Intl), is priced around ฿6,001.

  • 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 ฿4,264). Flying from Chiang Mai to Seoul in November is currently the most expensive (average of ฿10,864). 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.

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 December 2025.
Jeju Air flights from Chiang Mai to Seoul

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 13 December 2025.
AirlineCheapestAverageFlexibilityOn-time
Jeju AirCheapest฿9,540Average฿10,854FlexibilityNo cancel feeOn-timeN/A
Search Jeju 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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