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$173+ Cheap flights from Chiang Mai (CNX) to Seoul (SEL)

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 8/11. Fares are subject to change and may not be available on all flights or dates of travel.
CNX — SEL
Aug 4 — Aug 111
Mon 8/4
Mon 8/11
1 adult, Economy
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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 July 30, 2025.

Round-trip from

$228
(Trip.com)

One-way from

$173
(Kiwi.com)

Popular in

August

Cheapest in

May

Average price

$414

Good round-trip deal

$778 or less

Good one-way deal

$630 or less
From Chiang Mai to Seoul (SEL)
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One-way flight from Chiang Mai to Seoul (SEL)
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Highest demand for flights based on searches. 8% potential increase in price ($38 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($12 potential savings vs. average RT price).
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Average for round-trip flights in July 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 July 30, 2025.

This Trip.com deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2811:30 pmCNX - ICN
1 stop8h 50mMultiple Airlines
Mon 9/18:20 pmICN - CNX
1 stop22h 30mMultiple Airlines
Deal found 7/28$228
This Trip.com deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/2310:35 amCNX - ICN
1 stop13h 00mHK Express
Sat 12/69:55 pmICN - CNX
1 stop13h 55mHK Express
Deal found 7/29$306
This Mytrip deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1311:05 pmCNX - GMP
1 stop12h 00mAir China
Sat 9/202:25 pmGMP - CNX
1 stop9h 25mAir China
Deal found 7/30$355
This Gotogate deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1310:05 amCNX - GMP
2 stops22h 55mChina Eastern
Sat 9/208:50 pmGMP - CNX
2 stops20h 30mChina Eastern
Deal found 7/30$382
This Priceline deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/13:35 pmCNX - GMP
1 stop26h 15mMultiple Airlines
Thu 12/1112:00 pmGMP - CNX
2 stops29h 25mMultiple Airlines
Deal found 7/29$681
This Japan Airlines deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Japan Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/1411:55 amCNX - GMP
2 stops20h 50mJapan Airlines
Thu 9/187:20 pmGMP - CNX
2 stops16h 00mJapan Airlines
Deal found 7/30$956

Cheapflights Fare Finder

 
Customize 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 2,558,603 searches. Data last updated July 30, 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 8/28

11:30 pm-10:20 am

1 stop8h 50m

Incheon Intl

Mon 9/1

8:20 pm-4:50 pm

1 stop22h 30m

$228

Chiang MaiIncheon

CNX - ICN

CNXICN

Chiang Mai

Sun 11/23

10:35 am-1:35 am

1 stop13h 00m

Incheon Intl

Sat 12/6

9:55 pm-9:50 am

1 stop13h 55m

$306

Chiang MaiSeoul

CNX - GMP

CNXGMP

Chiang Mai

Sat 9/13

11:05 pm-1:05 pm

1 stop12h 00m

Seoul Gimpo Intl

Sat 9/20

2:25 pm-9:50 pm

1 stop9h 25m

$355

Chiang MaiSeoul

CNX - GMP

CNXGMP

Chiang Mai

Sat 9/13

10:05 am-11:00 am

2 stops22h 55m

Seoul Gimpo Intl

Sat 9/20

8:50 pm-3:20 pm

2 stops20h 30m

$382

Chiang MaiSeoul

CNX - GMP

CNXGMP

Chiang Mai

Mon 12/1

3:35 pm-7:50 pm

1 stop26h 15m

Seoul Gimpo Intl

Thu 12/11

12:00 pm-3:25 pm

2 stops29h 25m

$681

Chiang MaiSeoul

CNX - GMP

CNXGMP

Chiang Mai

Sun 9/14

11:55 am-10:45 am

2 stops20h 50m

Seoul Gimpo Intl

Thu 9/18

7:20 pm-9:20 am

2 stops16h 00m

$956

Chiang MaiIncheon

CNX - ICN

CNXICN

Chiang Mai

Mon 8/11

5:20 pm-12:10 pm

2 stops40h 50m

$173

Chiang MaiIncheon

CNX - ICN

CNXICN

Chiang Mai

Wed 8/13

10:30 am-9:35 pm

1 stop9h 05m

$175

Chiang MaiIncheon

CNX - ICN

CNXICN

Chiang Mai

Thu 9/25

10:35 pm-5:50 am

Nonstop5h 15m

$184

Chiang MaiIncheon

CNX - ICN

CNXICN

Chiang Mai

Thu 8/21

6:50 pm-1:55 pm

1 stop17h 05m

$190

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

Showing 1-10 of 17 results
1
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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 round-trip 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 $998). Flying from Chiang Mai to Seoul in December is currently the most expensive (average of $1,635). 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 July 30, 2025.

One of the essential ways to save on airfare from Chiang Mai to Seoul is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight at noon could potentially save you up to 11% on airfare.

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 July 30, 2025.

The most flights from CNX to SEL are scheduled on a Monday (9 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (6 on average).

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 July 30, 2025.
Read reviews from past customers who have flown Japan Airlines, China Southern, and Malaysia Airlines from Chiang Mai to Seoul. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Japan Airlines
8.3
Very good
1,536 reviews

Boarding

8.4

Crew

8.7

Comfort

8.2

Overall

8.3

Food

7.7

Entertainment

7.8

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
1,536 reviews
Japan Airlines
8.3
Very good
1,536 reviews

Boarding

8.4

Crew

8.7

Comfort

8.2

Overall

8.3

Food

7.7

Entertainment

7.8

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
104 reviews
Japan Airlines
8.3
Very good
1,536 reviews

Boarding

8.4

Crew

8.7

Comfort

8.2

Overall

8.3

Food

7.7

Entertainment

7.8

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.
Malaysia Airlines
7.4
Good
270 reviews
Japan Airlines
8.3
Very good
1,536 reviews

Boarding

8.4

Crew

8.7

Comfort

8.2

Overall

8.3

Food

7.7

Entertainment

7.8

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?

    For a flight from Chiang Mai to Seoul, you will be flying from Chiang Mai. Chiang Mai (CNX) is just 1.9 mi from the center of the city. Chiang Mai is the only Chiang Mai airport and it handles 6 outbound flights to Seoul per day. 0 airlines have flights to Seoul from Chiang Mai on a regular basis.

  • How popular is this Chiang Mai to Seoul flight route?

    The Chiang Mai to Seoul flight path was viewed by 8 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?

    According to our current data, HK Express ($306), Air China ($355), and China Eastern ($382) offers the cheapest pricing from Chiang Mai to Seoul. HK Express is 20% cheaper than the average price of flights available within the next 90 days to this destination.

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

    The cheapest airline one-way is HK Express, with whom users have recently found tickets for as low as $175. However, be on the lookout for offers from Jeju Air and China Southern, 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?

    Consider Thai Airways (92%), Asiana Airlines (92%) or Delta (89%) when booking your flight. These represent the most reliable airlines when flying from Chiang Mai to Seoul.

  • What are the cheapest flights from Chiang Mai to Seoul?

    Looking at all options, your cheapest flight can be booked for $203. While the most popular route (Chiang Mai - Incheon Intl) can be booked for $228 on average our data indicates $1,112 when flying from Chiang Mai to Seoul.

  • 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 vacation 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 $998). Flying from Chiang Mai to Seoul in December is currently the most expensive (average of $1,635). 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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Alternative routes for Chiang Mai to Seoul

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