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$126+ 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 7/11. Fares are subject to change and may not be available on all flights or dates of travel.
CNX — SEL
juin 17 — juin 241
mar. 6/17
mar. 6/24
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 juin 12, 2025.

Round-trip from

$254
(AirAsia)

One-way from

$126
(AirAsia)

Popular in

January

Cheapest in

May

Average price

$466

Good round-trip deal

$605 or less

Good one-way deal

$521 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. 18% potential increase in price ($85 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 June 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 juin 12, 2025.

This Kiwi.com deal was found by Cheapflights users on 6/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dim. 6/1511:30 pmCNX - ICN
1 stop8h 50mMultiple Airlines
lun. 6/238:20 pmICN - CNX
1 stop22h 30mMultiple Airlines
Deal found 6/11$238
This Kiwi.com deal was found by Cheapflights users on 6/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 8/1410:30 amCNX - ICN
1 stop9h 05mHK Express
sam. 8/162:35 amICN - CNX
1 stop9h 10mHK Express
Deal found 6/11$308
This Malaysia Airlines deal was found by Cheapflights users on 6/12. 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 Malaysia Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dim. 7/2712:35 pmCNX - ICN
1 stop16h 35mMalaysia Airlines
dim. 8/311:00 amICN - CNX
1 stop26h 40mMalaysia Airlines
Deal found 6/12$333
This Priceline deal was found by Cheapflights users on 6/11. 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.
mar. 6/172:55 pmCNX - ICN
1 stop22h 30mChina Eastern
mer. 6/254:20 pmICN - CNX
1 stop23h 05mChina Eastern
Deal found 6/11$360
This FlightHub deal was found by Cheapflights users on 6/11. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 6/1711:05 pmCNX - GMP
1 stop12h 00mAir China
mar. 6/242:25 pmGMP - CNX
1 stop9h 25mAir China
Deal found 6/11$393
This Kiwi.com deal was found by Cheapflights users on 6/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dim. 7/277:25 pmCNX - GMP
2 stops12h 25mMultiple Airlines
dim. 8/33:50 pmGMP - CNX
1 stop8h 20mMultiple Airlines
Deal found 6/12$408
This China Southern deal was found by Cheapflights users on 6/11. 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 China Southern is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 7/166:50 pmCNX - ICN
1 stop18h 35mChina Southern
mer. 7/233:15 pmICN - CNX
1 stop28h 35mChina Southern
Deal found 6/11$439
This Jeju Air deal was found by Cheapflights users on 6/10. 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 Jeju Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 6/1110:35 pmCNX - ICN
Nonstop5h 15mJeju Air
dim. 6/156:00 pmICN - CNX
Nonstop5h 35mJeju Air
Deal found 6/10$467
This SmartFares deal was found by Cheapflights users on 6/11. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 8/1312:45 amCNX - ICN
Nonstop5h 05mAsiana Airlines
dim. 8/177:50 pmICN - CNX
Nonstop5h 50mAsiana Airlines
Deal found 6/11$470
This China Airlines deal was found by Cheapflights users on 6/11. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 10/2911:25 amCNX - ICN
1 stop21h 55mChina Airlines
ven. 11/712:25 pmICN - CNX
1 stop24h 00mChina Airlines
Deal found 6/11$489
This Korean Air deal was found by Cheapflights users on 6/11. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 6/1811:15 pmCNX - ICN
Nonstop5h 25mKorean Air
ven. 6/276:25 pmICN - CNX
Nonstop5h 30mKorean Air
Deal found 6/11$496
This Jin Air deal was found by Cheapflights users on 6/11. 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 Jin Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 9/189:45 pmCNX - ICN
Nonstop5h 20mJin Air
jeu. 10/95:10 pmICN - CNX
Nonstop5h 35mJin Air
Deal found 6/11$498

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 juin 12, 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

jeu. 9/18

8:10 pm-10:20 am

1 stop12h 10m

Incheon Intl

jeu. 10/9

11:35 am-6:30 pm

1 stop8h 55m

$254

Chiang MaiIncheon

CNX - ICN

CNXICN

Chiang Mai

jeu. 8/14

10:30 am-9:35 pm

1 stop9h 05m

Incheon Intl

sam. 8/16

2:35 am-9:45 am

1 stop9h 10m

$308

Chiang MaiIncheon

CNX - ICN

CNXICN

Chiang Mai

dim. 7/27

12:35 pm-7:10 am

1 stop16h 35m

Incheon Intl

dim. 8/3

11:00 am-11:40 am

1 stop26h 40m

$333

Chiang MaiIncheon

CNX - ICN

CNXICN

Chiang Mai

jeu. 8/14

10:05 am-11:00 am

3 stops22h 55m

Incheon Intl

dim. 8/17

8:15 pm-1:25 pm

2 stops19h 10m

$381

Chiang MaiSeoul

CNX - GMP

CNXGMP

Chiang Mai

dim. 7/27

7:25 pm-9:50 am

2 stops12h 25m

Seoul Gimpo Intl

dim. 8/3

3:50 pm-10:10 pm

1 stop8h 20m

$408

Chiang MaiIncheon

CNX - ICN

CNXICN

Chiang Mai

mer. 7/16

6:50 pm-3:25 pm

1 stop18h 35m

Incheon Intl

mer. 7/23

3:15 pm-5:50 pm

1 stop28h 35m

$439

Chiang MaiIncheon

CNX - ICN

CNXICN

Chiang Mai

mer. 8/13

12:45 am-7:50 am

Nonstop5h 05m

Incheon Intl

dim. 8/17

7:50 pm-11:40 pm

Nonstop5h 50m

$470

Chiang MaiIncheon

CNX - ICN

CNXICN

Chiang Mai

mer. 10/29

11:25 am-11:20 am

1 stop21h 55m

Incheon Intl

ven. 11/7

12:25 pm-10:25 am

1 stop24h 00m

$489

Chiang MaiIncheon

CNX - ICN

CNXICN

Chiang Mai

jeu. 9/18

9:45 pm-5:05 am

Nonstop5h 20m

Incheon Intl

jeu. 10/9

5:10 pm-8:45 pm

Nonstop5h 35m

$498

Chiang MaiIncheon

CNX - ICN

CNXICN

Chiang Mai

jeu. 8/14

11:55 pm-7:10 am

Nonstop5h 15m

Incheon Intl

dim. 8/17

6:30 pm-10:40 pm

Nonstop6h 10m

$543

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 37 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 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 $1,000). 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 juin 12, 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 10% 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 juin 12, 2025.

The most flights from CNX to SEL are scheduled on a Thursday (8 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (4 on average).

Rainfall in Seoul by month

Plan your trip to Seoul by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Seoul ranges from 1.1 - 10.0 inches per month. July is typically the wettest month, when rainfall can reach 10.0 in. December is typically the driest time to visit Seoul when rainfall is around 1.1 in.

Temperature in Seoul by month

Plan your trip to Seoul by taking into account the average temperature totals by month.

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 77.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

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 juin 12, 2025.
To help decide which airline to fly from Chiang Mai to Seoul, see what other customers have to say about EVA Air, Korean Air and Japan Airlines. 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.
EVA Air
8.4
Very good
1,202 reviews

Food

8.1

Boarding

8.4

Entertainment

8.0

Overall

8.4

Comfort

8.3

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

TPE - SEA

The flight and crew were exceptional as always when I fly with EVA.
EVA Air
8.4
Very good
1,202 reviews
EVA Air
8.4
Very good
1,202 reviews

Food

8.1

Boarding

8.4

Entertainment

8.0

Overall

8.4

Comfort

8.3

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

TPE - SEA

The flight and crew were exceptional as always when I fly with EVA.
Korean Air
8.4
Very good
1,088 reviews
EVA Air
8.4
Very good
1,202 reviews

Food

8.1

Boarding

8.4

Entertainment

8.0

Overall

8.4

Comfort

8.3

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

TPE - SEA

The flight and crew were exceptional as always when I fly with EVA.
Japan Airlines
8.3
Very good
1,489 reviews
EVA Air
8.4
Very good
1,202 reviews

Food

8.1

Boarding

8.4

Entertainment

8.0

Overall

8.4

Comfort

8.3

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

TPE - SEA

The flight and crew were exceptional as always when I fly with EVA.
China Airlines
8.3
Very good
738 reviews
EVA Air
8.4
Very good
1,202 reviews

Food

8.1

Boarding

8.4

Entertainment

8.0

Overall

8.4

Comfort

8.3

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

TPE - SEA

The flight and crew were exceptional as always when I fly with EVA.

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 5 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 ($308), Malaysia Airlines ($333), and China Eastern ($381) offers the cheapest pricing from Chiang Mai to Seoul. HK Express is 16% 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 $154. However, be on the lookout for offers from Malaysia Airlines and China Eastern, 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 Delta (98%), Korean Air (98%) or Eastar Jet (97%) 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 $155. While the most popular route (Chiang Mai - Incheon Intl) can be booked for $455 on average our data indicates $1,839 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 $1,000). 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.

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