How long is the flight from Chiang Mai to Seoul?

There are many flights that can get you from Chiang Mai to Seoul in 10h 55m. Fly via Air China, China Eastern, or Thai Vietjet Air 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 ฿5,838, 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 53% below the average price you’ll pay for this route.

In terms of precipitation, rainfall in Seoul ranges from 27.0 - 253.0 inches per month. July is typically the wettest month, when rainfall can reach 253.0 mm. December is typically the driest time to visit Seoul when rainfall is around 27.0 mm.

If weather is an important factor for your trip to Seoul, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 25.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 2.0 C).

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 ฿23,974, our data indicates the cheapest price to be ฿5,047. The most popular route (Chiang Mai - Incheon Intl), is priced around ฿8,954.

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 (98%), Eastar Jet (97%) and Air Busan (97%).

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 3 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.

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.

฿3,695+ Cheap Flights from Chiang Mai to Seoul

Cheap flight deals from Chiang Mai to Seoul

Enter your travel dates to find the best prices.

Cheapest

Best

Direct

Last-minute

One-way

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 17 September 2026.

Thu 1/1023:00 -

Nonstop5h 30m

Tue 6/1018:10 -

Nonstop5h 50m

Deal found 12/9฿6,624

Thu 1/1023:00 -

Nonstop5h 30m

Fri 9/1018:10 -

Nonstop5h 50m

Deal found 12/9฿6,691

Wed 30/900:50 -

Nonstop5h 25m

Fri 9/1018:10 -

Nonstop5h 50m

Deal found 14/9฿7,157

Wed 23/923:55 -

Nonstop5h 15m

Sun 27/918:30 -

Nonstop6h 00m

Deal found 16/9฿7,589

Wed 23/900:50 -

Nonstop5h 25m

Sun 27/919:55 -

Nonstop5h 55m

Deal found 14/9฿7,656

Sun 13/923:00 -

Nonstop5h 30m

Thu 17/919:55 -

Nonstop5h 55m

Deal found 12/9฿7,689

Wed 23/921:45 -

Nonstop5h 20m

Sun 27/918:10 -

Nonstop5h 50m

Deal found 16/9฿7,789

Sun 20/900:50 -

Nonstop5h 25m

Fri 25/918:10 -

Nonstop5h 50m

Deal found 14/9฿7,889

Wed 30/921:45 -

Nonstop5h 20m

Sat 10/1018:10 -

Nonstop5h 50m

Deal found 14/9฿8,122

Wed 30/923:55 -

Nonstop5h 15m

Sun 4/1019:55 -

Nonstop5h 55m

Deal found 16/9฿8,388

Sat 12/923:00 -

Nonstop5h 30m

Mon 14/917:20 -

Nonstop5h 25m

Deal found 12/9฿8,521

Wed 28/1023:05 -

1 stop9h 00m

Wed 4/1115:20 -

1 stop8h 40m

Deal found 13/9฿14,113

Best flights from Chiang Mai to Seoul
Discover carefully curated flight deals from Chiang Mai to Seoul that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 17 September 2026.

Wed 11/1123:05 -

1 stop20h 50m

Sun 15/1113:10 -

1 stop10h 40m

Deal found 12/9฿11,817

Sat 14/1116:25 -

1 stop28h 20m

Thu 19/1115:40 -

2 stops22h 20m

Deal found 13/9฿12,249

Thu 22/1011:05 -

3 stops16h 55m

Sun 25/1019:00 -

Nonstop6h 10m

Deal found 12/9฿12,349

Thu 1/1021:05 -

1 stop10h 55m

Fri 9/1012:10 -

1 stop13h 15m

Deal found 12/9฿12,449

Mon 1/321:25 -

Nonstop5h 05m

Sun 14/316:25 -

Nonstop6h 00m

Deal found 16/9฿17,675

Sun 24/100:20 -

Nonstop4h 45m

Fri 29/118:45 -

Nonstop6h 00m

Deal found 13/9฿18,008

Thu 22/1016:10 -

3 stops18h 00m

Sun 25/1014:20 -

2 stops23h 40m

Deal found 12/9฿12,549

Sat 14/1123:05 -

1 stop15h 30m

Wed 18/1116:45 -

Nonstop5h 55m

Deal found 13/9฿12,682

Sun 6/1216:25 -

3 stops23h 00m

Tue 8/1215:40 -

2 stops19h 25m

Deal found 12/9฿13,847

Thu 19/1123:05 -

1 stop12h 00m

Sat 28/1114:25 -

1 stop9h 25m

Deal found 17/9฿15,844

Mon 1/213:20 -

1 stop16h 35m

Sun 7/212:10 -

1 stop12h 35m

Deal found 16/9฿16,909

Tue 15/1223:05 -

1 stop12h 00m

Sat 19/1214:25 -

1 stop9h 25m

Deal found 16/9฿16,909

Mon 14/1223:05 -

1 stop12h 00m

Fri 18/1214:25 -

1 stop9h 25m

Deal found 15/9฿17,076

Sat 14/1123:05 -

1 stop9h 00m

Thu 19/1114:10 -

1 stop9h 50m

Deal found 13/9฿18,407

Sun 13/1223:05 -

1 stop12h 00m

Thu 17/1214:25 -

1 stop9h 25m

Deal found 14/9฿17,209

Mon 25/119:40 -

1 stop7h 50m

Fri 29/116:45 -

Nonstop5h 55m

Deal found 16/9฿19,106

Thu 12/1123:05 -

1 stop9h 00m

Tue 17/1114:10 -

1 stop9h 50m

Deal found 13/9฿20,970

Thu 12/1123:05 -

1 stop12h 00m

Thu 19/1114:25 -

1 stop9h 25m

Deal found 13/9฿23,367

Sat 3/1021:25 -

2 stops18h 15m

Tue 6/1007:00 -

3 stops17h 00m

Deal found 12/9฿22,601

Mon 4/123:05 -

1 stop12h 00m

Thu 7/114:25 -

1 stop9h 25m

Deal found 16/9฿23,633

Mon 28/900:10 -

2 stops11h 25m

Fri 2/1006:25 -

3 stops17h 35m

Deal found 14/9฿22,834

Mon 1/323:05 -

1 stop12h 00m

Sun 14/314:25 -

1 stop9h 25m

Deal found 12/9฿24,832

Find flight deals from Chiang Mai to Seoul

Round-trip from	฿6,624
One-way from	฿3,695
Popular in	November
Cheapest in	October
Average price	฿11,118
Good round-trip deal	฿16,877 or less
Good one-way deal	฿10,627 or less

Jeju Air
1/10-6/10
Nonstop
11h 20m total
Chiang Mai to Seoul

Search Deals

Jeju Air
1/10-31/12
Nonstop
5h 30m total
Chiang Mai to Seoul

Search Deals

Highest demand for flights based on searches. 5% potential increase in price (฿21,898 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease (฿12,387 potential savings vs. average return price).

Search Deals

Average for round-trip flights in September 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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Chiang MaiIncheon

CNX Chiang Mai - ICN Incheon Intl

CNXICN

Chiang Mai

Fri 25/9

23:00-06:30

Nonstop5h 30m

Incheon Intl

Wed 31/12

00:00-22:00

Nonstop0h 00m

฿3,861

Chiang MaiIncheon

CNX Chiang Mai - ICN Incheon Intl

CNXICN

Chiang Mai

Wed 30/9

23:55-07:10

Nonstop5h 15m

Incheon Intl

Wed 31/12

00:00-22:00

Nonstop0h 00m

฿3,961

Chiang MaiIncheon

CNX Chiang Mai - ICN Incheon Intl

CNXICN

Chiang Mai

Thu 24/9

23:55-07:10

Nonstop5h 15m

Incheon Intl

Wed 31/12

00:00-22:00

Nonstop0h 00m

฿3,961

Fastest return journey

Chiang MaiIncheon

CNX Chiang Mai - ICN Incheon Intl

CNXICN

Chiang Mai

Fri 30/10

00:45-07:30

Nonstop4h 45m

Incheon Intl

Wed 31/12

00:00-22:00

Nonstop0h 00m

฿4,460

Chiang MaiIncheon

CNX Chiang Mai - ICN Incheon Intl

CNXICN

Chiang Mai

Wed 7/10

23:55-07:10

Nonstop5h 15m

Incheon Intl

Wed 31/12

00:00-22:00

Nonstop0h 00m

฿4,527

Chiang MaiIncheon

CNX Chiang Mai - ICN Incheon Intl

CNXICN

Chiang Mai

Mon 30/11

21:50-05:30

Nonstop5h 40m

Incheon Intl

Wed 31/12

00:00-22:00

Nonstop0h 00m

฿5,026

Chiang MaiIncheon

CNX Chiang Mai - ICN Incheon Intl

CNXICN

Chiang Mai

Mon 2/11

21:50-05:30

Nonstop5h 40m

Incheon Intl

Wed 31/12

00:00-22:00

Nonstop0h 00m

฿5,992

Chiang MaiIncheon

CNX Chiang Mai - ICN Incheon Intl

CNXICN

Chiang Mai

Wed 30/9

20:35-10:00

1 stop11h 25m

Incheon Intl

Wed 31/12

00:00-22:00

Nonstop0h 00m

฿6,058

Chiang MaiSeoul

CNX Chiang Mai - GMP Seoul Gimpo Intl

CNXGMP

Chiang Mai

Mon 18/1

16:30-13:35

2 stops19h 05m

Seoul Gimpo Intl

Wed 31/12

00:00-22:00

Nonstop0h 00m

฿6,225

Chiang MaiSeoul

CNX Chiang Mai - GMP Seoul Gimpo Intl

CNXGMP

Chiang Mai

Sun 27/12

23:05-13:05

1 stop12h 00m

Seoul Gimpo Intl

Wed 31/12

00:00-22:00

Nonstop0h 00m

฿6,358

Flights are sorted by cheapest return flights first.

Deals found on 16/9

Showing 1-10 of 42 resultsSorted by cheapest first

...

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.

CNX-SEL

CNX-ICN

CNX-GMP

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

CNX-SEL

CNX-ICN

CNX-GMP

What is the cheapest month to book a flight from Chiang Mai to Seoul?

Currently, October is the cheapest month in which you can book a flight from Chiang Mai to Seoul (average of ฿8,455). Flying from Chiang Mai to Seoul in November is currently the most expensive (average of ฿16,210). 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?

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

The most flights from CNX to SEL are scheduled on a Wednesday (4 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (2 on average).

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

Airfare is below average for this route at the moment.

Chiang Mai to Seoul flights typically cost between ฿8,588 and ฿11,417 in October.
The cheapest return price found within the last 5 days was ฿6,624 on Jeju Air (1 Oct–6 Oct).

Related info for your journey

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 3 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 long is the flight from Chiang Mai to Seoul?
There are many flights that can get you from Chiang Mai to Seoul in 10h 55m. Fly via Air China, China Eastern, or Thai Vietjet Air 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 ฿5,838, 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 53% 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 (98%), Eastar Jet (97%) and Air Busan (97%).
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 ฿23,974, our data indicates the cheapest price to be ฿5,047. The most popular route (Chiang Mai - Incheon Intl), is priced around ฿8,954.
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, October is the cheapest month in which you can book a flight from Chiang Mai to Seoul (average of ฿8,455). Flying from Chiang Mai to Seoul in November is currently the most expensive (average of ฿16,210). 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

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Top airline flying from Chiang Mai to Seoul

Airline	Cheapest	Average	Flexibility	On-time
Eastar Jet	Cheapest฿5,838	Average฿11,287	FlexibilityNo cancel fee	On-time86%	Search Eastar Jet flights

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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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Cheap flights from Chiang Mai to Seoul from ฿3,695

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Chiang Mai to Seoul

Cheapest flights from Chiang Mai to SeoulExplore 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 17 September 2026.

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 17 September 2026.

Best flights from Chiang Mai to SeoulDiscover carefully curated flight deals from Chiang Mai to Seoul that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 17 September 2026.

Discover carefully curated flight deals from Chiang Mai to Seoul that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 17 September 2026.

Direct flights from Chiang Mai to SeoulExplore direct flight options from Chiang Mai to Seoul based on user searches, and compare prices and availability for your desired travel dates. Data last updated 17 September 2026.

Explore direct flight options from Chiang Mai to Seoul based on user searches, and compare prices and availability for your desired travel dates. Data last updated 17 September 2026.

Last-minute flights from Chiang Mai to SeoulDiscover last-minute flight deals from Chiang Mai to Seoul. Data last updated 17 September 2026 and is based on user searches.

Discover last-minute flight deals from Chiang Mai to Seoul. Data last updated 17 September 2026 and is based on user searches.

One-way flights from Chiang Mai to SeoulSearch for one-way flight options from Chiang Mai to Seoul. Find affordable one-way fares based on user searches. Data last updated 17 September 2026.

Search for one-way flight options from Chiang Mai to Seoul. Find affordable one-way fares based on user searches. Data last updated 17 September 2026.

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Use the filters below to find and compare flights from Chiang Mai to Seoul that are best for you.

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.

Cheapflights Insights

What is the cheapest month to book a flight from Chiang Mai to Seoul?

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 17 September 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.

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 17 September 2026.

The most flights from CNX to SEL are scheduled on a Wednesday (4 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (2 on average).

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

Airfare is below average for this route at the moment.

Chiang Mai to Seoul flights typically cost between ฿8,588 and ฿11,417 in October.The cheapest return price found within the last 5 days was ฿6,624 on Jeju Air (1 Oct–6 Oct).

Related info for your journey

What airport do you fly from for flights from Chiang Mai to Seoul?

How long is the flight from Chiang Mai to Seoul?

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

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

What are the cheapest flights from Chiang Mai to Seoul?

Can I find deals for flights from Chiang Mai to Seoul that include hotel bookings?

How can I find direct flights from Chiang Mai to Seoul?

Can I find deals for business class flights from Chiang Mai to Seoul?

What is the cheapest month to book a flight from Chiang Mai to Seoul?

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.

Complete your trip

Complete your trip to Seoul by adding a car rental and/or hotel reservation to your travel itinerary.

Direct flights to South Korea

Book a non-stop flight to one of these other cities located in South Korea.

Search flights from Chiang Mai to Seoul by cabin class

Find flights from Chiang Mai to Seoul, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Chiang Mai and Seoul flights

Browse other Chiang Mai and Seoul flight options. Last updated on 17 September 2026.

Other flights from Chiang Mai

Browse through other flights departing from Chiang Mai. Flights are based on user searches made on Cheapflights and were last updated on 17 September 2026.

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Check out other popular destinations found by fellow travellers in 2026

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Explore flights to Seoul departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 17 September 2026.

Top airline flying from Chiang Mai to Seoul

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

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

Can Cheapflights 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?

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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 17 September 2026.

Best flights from Chiang Mai to Seoul
Discover carefully curated flight deals from Chiang Mai to Seoul that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 17 September 2026.

Direct flights from Chiang Mai to Seoul
Explore direct flight options from Chiang Mai to Seoul based on user searches, and compare prices and availability for your desired travel dates. Data last updated 17 September 2026.

Last-minute flights from Chiang Mai to Seoul
Discover last-minute flight deals from Chiang Mai to Seoul. Data last updated 17 September 2026 and is based on user searches.

One-way flights from Chiang Mai to Seoul
Search for one-way flight options from Chiang Mai to Seoul. Find affordable one-way fares based on user searches. Data last updated 17 September 2026.

Chiang Mai to Seoul flights typically cost between ฿8,588 and ฿11,417 in October.
The cheapest return price found within the last 5 days was ฿6,624 on Jeju Air (1 Oct–6 Oct).