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Chiang Mai

$145+ Cheap flights from Seoul (SEL) to Chiang Mai (CNX)

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 7/9. Fares are subject to change and may not be available on all flights or dates of travel.
SEL — CNX
Jun 21 — Jun 281
Sun 6/21
Sun 6/28
1 adult, Economy
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Cheapflights Tip: The best prices from Seoul to Chiang Mai are usually found in March or September, booked 75 days in advance, depart on a Friday or Sunday and return on a Thursday

Cheap flight deals from Seoul to Chiang Mai

Cheapest flights from Seoul to Chiang Mai
Explore the most affordable flight options available from Seoul to Chiang Mai. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 22, 2026.

This CheapOair deal was found by Cheapflights users on 5/21. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/166:30 pm
ICN
-
CNX
Nonstop6h 10m
Multiple Airlines
Mon 7/2011:00 pm
CNX
-
ICN
Nonstop5h 30m
Multiple Airlines
Deal found 5/21$280
This CheapOair deal was found by Cheapflights users on 5/18. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/166:10 pm
ICN
-
CNX
Nonstop5h 50m
Multiple Airlines
Sun 7/1911:55 pm
CNX
-
ICN
Nonstop5h 15m
Multiple Airlines
Deal found 5/18$306
This CheapOair deal was found by Cheapflights users on 5/19. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/166:10 pm
ICN
-
CNX
Nonstop5h 50m
Jeju Air
Sun 7/1911:00 pm
CNX
-
ICN
Nonstop5h 30m
Jeju Air
Deal found 5/19$310
This Mytrip deal was found by Cheapflights users on 5/19. 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.
Tue 6/27:45 am
ICN
-
CNX
1 stop9h 35m
China Eastern
Fri 6/1210:05 am
CNX
-
ICN
1 stop10h 40m
China Eastern
Deal found 5/19$313
This FlightHub deal was found by Cheapflights users on 5/19. 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.
Thu 6/47:45 am
ICN
-
CNX
1 stop9h 35m
China Eastern
Tue 6/164:10 pm
CNX
-
ICN
2 stops17h 45m
China Eastern
Deal found 5/19$314
This CheapOair deal was found by Cheapflights users on 5/20. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/166:30 pm
ICN
-
CNX
Nonstop6h 10m
Eastar Jet
Sun 7/1911:55 pm
CNX
-
ICN
Nonstop5h 15m
Eastar Jet
Deal found 5/20$321
This Jin Air deal was found by Cheapflights users on 5/22. 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.
Tue 5/265:20 pm
ICN
-
CNX
Nonstop5h 25m
Jin Air
Mon 6/19:45 pm
CNX
-
ICN
Nonstop5h 20m
Jin Air
Deal found 5/22$323
This China Eastern deal was found by Cheapflights users on 5/17. 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 Eastern is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/288:50 pm
GMP
-
CNX
2 stops38h 25m
China Eastern
Thu 6/42:55 pm
CNX
-
GMP
1 stop18h 05m
China Eastern
Deal found 5/17$344
This China Eastern deal was found by Cheapflights users on 5/20. 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 Eastern is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/48:50 pm
GMP
-
CNX
2 stops20h 30m
China Eastern
Tue 6/94:10 pm
CNX
-
GMP
2 stops25h 40m
China Eastern
Deal found 5/20$350
This China Eastern deal was found by Cheapflights users on 5/18. 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 Eastern is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/48:50 pm
GMP
-
CNX
2 stops20h 30m
China Eastern
Wed 6/104:10 pm
CNX
-
GMP
2 stops16h 50m
China Eastern
Deal found 5/18$351
This China Eastern deal was found by Cheapflights users on 5/18. 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 Eastern is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/212:00 pm
GMP
-
CNX
1 stop27h 25m
China Eastern
Thu 6/410:05 am
CNX
-
GMP
3 stops22h 55m
China Eastern
Deal found 5/18$378
This CheapOair deal was found by Cheapflights users on 5/21. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/48:50 pm
GMP
-
CNX
2 stops20h 30m
China Eastern
Tue 6/1610:05 am
CNX
-
GMP
3 stops22h 55m
China Eastern
Deal found 5/21$384

Find flight deals from Seoul to Chiang Mai

Discover tips and strategies to find the most affordable flight options for your journey from Seoul (SEL) to Chiang Mai (CNX). 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 May 22, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$280
(CheapOair)

One-way from

$145
(Eastar Jet)

Popular in

January

Cheapest in

March

Average price

$264

Good round-trip deal

$426 or less

Good one-way deal

$257 or less
Provider with most accurate pricing for Seoul (SEL)-Chiang Mai flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seoul (SEL)-Chiang Mai flights.
Search Deals
From Seoul (SEL) to Chiang Mai
Search Deals
One-way flight from Seoul (SEL) to Chiang Mai
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($41 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
Search Deals
Price to beat on a round-trip flight from Seoul (SEL) to Chiang Mai.
Search Deals
Price to beat on a one-way flight from Seoul (SEL) to Chiang Mai.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seoul to Chiang Mai 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 May 22, 2026.
Use the filters below to find and compare flights from Seoul to Chiang Mai that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

IncheonChiang Mai

ICN - CNX

ICNCNX

Incheon Intl

Thu 6/11

7:45 am-9:15 am

1 stop27h 30m

Chiang Mai

Mon 6/15

2:55 pm-3:20 pm

1 stop22h 25m

$336

IncheonChiang Mai

ICN - CNX

ICNCNX

Incheon Intl

Sat 9/5

7:45 am-3:20 pm

1 stop9h 35m

Chiang Mai

Sat 9/12

4:10 pm-10:45 pm

1 stop28h 35m

$347

SeoulChiang Mai

GMP - CNX

GMPCNX

Seoul Gimpo Intl

Thu 6/4

8:50 pm-3:20 pm

2 stops20h 30m

Chiang Mai

Wed 6/10

4:10 pm-11:00 am

2 stops16h 50m

$351

SeoulChiang Mai

GMP - CNX

GMPCNX

Seoul Gimpo Intl

Thu 6/4

8:50 pm-3:20 pm

2 stops20h 30m

Chiang Mai

Sun 6/7

10:05 am-11:00 am

3 stops22h 55m

$351

IncheonChiang Mai

ICN - CNX

ICNCNX

Incheon Intl

Mon 6/1

7:45 am-3:20 pm

1 stop9h 35m

Chiang Mai

Sun 6/7

4:10 pm-11:00 am

3 stops16h 50m

$353

IncheonChiang Mai

ICN - CNX

ICNCNX

Incheon Intl

Sat 6/6

8:15 pm-3:20 pm

2 stops21h 05m

Chiang Mai

Sun 6/14

2:55 pm-8:45 pm

1 stop27h 50m

$355

SeoulChiang Mai

GMP - CNX

GMPCNX

Seoul Gimpo Intl

Tue 6/2

12:00 pm-1:25 pm

1 stop27h 25m

Chiang Mai

Thu 6/4

10:05 am-11:00 am

2 stops22h 55m

$378

SeoulChiang Mai

GMP - CNX

GMPCNX

Seoul Gimpo Intl

Thu 6/4

8:50 pm-3:20 pm

2 stops20h 30m

Chiang Mai

Tue 6/16

10:05 am-11:00 am

3 stops22h 55m

$384
Quickest round-trip

SeoulChiang Mai

GMP - CNX

GMPCNX

Seoul Gimpo Intl

Mon 9/14

2:25 pm-9:50 pm

1 stop9h 25m

Chiang Mai

Sat 9/19

11:05 pm-1:05 pm

1 stop12h 00m

$522

SeoulChiang Mai

GMP - CNX

GMPCNX

Seoul Gimpo Intl

Wed 7/1

8:50 pm-9:15 am

3 stops38h 25m

Chiang Mai

Sun 7/12

10:05 am-11:00 am

3 stops22h 55m

$604

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/21

Showing 1-10 of 30 resultsSorted by cheapest first
1
2
3
  • Most accurate provider: When it comes to deals on Seoul-Chiang Mai flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seoul-Chiang Mai flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seoul-Chiang Mai flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seoul-Chiang Mai flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seoul-Chiang Mai flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Seoul to Chiang Mai

Have a flexible travel schedule? Discover the best time to fly to Chiang Mai from Seoul 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 Seoul to Chiang Mai

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

Currently, March is the cheapest month in which you can book a flight from Seoul to Chiang Mai (average of $66). Flying from Seoul to Chiang Mai in December is currently the most expensive (average of $516). 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 SEL to CNX?

Find hourly flight availability from Seoul to Chiang Mai. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated May 22, 2026.

When flying from Seoul to Chiang Mai, 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 Seoul to Chiang Mai

Explore weekly flight availability from Seoul to Chiang Mai. 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 May 22, 2026.

The most flights from SEL to CNX are scheduled on a Saturday (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 to fly round-trip from Seoul to Chiang Mai?

How far ahead should I book a flight from Seoul to Chiang Mai?

Booking 74 days in advance of your planned departure date is, on average, the best time to get cheap flights from Seoul to Chiang Mai. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

Reviews of airlines servicing Chiang Mai

Get insights into the airlines that provide service to Chiang Mai. 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 Chiang Mai. Reviews last updated May 22, 2026.
Read through reviews of airlines operating flights from Seoul to Chiang Mai, such as Jin Air,Korean Air, andAsiana Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Jin Air
8.6
Very good
23 reviews

Food

7.8

Crew

9.2

Entertainment

7.6

Comfort

8.0

Boarding

8.9

Overall

8.6
Jin Air
8.6
Very good
23 reviews
Jin Air
8.6
Very good
23 reviews

Food

7.8

Crew

9.2

Entertainment

7.6

Comfort

8.0

Boarding

8.9

Overall

8.6
Korean Air
8.4
Very good
1,217 reviews
Jin Air
8.6
Very good
23 reviews

Food

7.8

Crew

9.2

Entertainment

7.6

Comfort

8.0

Boarding

8.9

Overall

8.6
Asiana Airlines
8.1
Very good
534 reviews
Jin Air
8.6
Very good
23 reviews

Food

7.8

Crew

9.2

Entertainment

7.6

Comfort

8.0

Boarding

8.9

Overall

8.6
Jeju Air
7.6
Good
38 reviews
Jin Air
8.6
Very good
23 reviews

Food

7.8

Crew

9.2

Entertainment

7.6

Comfort

8.0

Boarding

8.9

Overall

8.6

Related info for your journey

Find useful and relevant information for your journey from Seoul to Chiang Mai. 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 into for flights to Chiang Mai from Seoul?

    Chiang Mai (CNX), located 1.9 mi from the city center, is the airport you fly into when you book flights from Seoul to Chiang Mai. 5 airlines have flights to Chiang Mai from Seoul on a regular basis. Booking flights from Seoul to Chiang Mai should not be difficult; the airport handles an average of 2 inbound flights from Seoul per day.

  • How long is the flight from Seoul to Chiang Mai?

    China Eastern and Air China can get you from Seoul to Chiang Mai in just under 9h 25m. Your travel time can differ by up to 18h 05m. There are 2120 mi between Seoul and Chiang Mai. Both multi-stop and nonstop flights can be found to your destination and back.

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

    Currently priced at $69, Eastar Jet will fly you from Seoul to Chiang Mai and back. In addition to Eastar Jet, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Jeju Air and Jin Air - these airlines can fly you to your destination from $105 and $224, respectively. You may be able to fly from Seoul to Chiang Mai for 77% less than the average price by searching for these airlines.

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

    For one-way options, check prices for Jeju Air. According to our data, you can fly for as low as $71. Users have also found prices from $85 and $96 on Jin Air and Eastar Jet, respectively.

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

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Seoul to Chiang Mai on time: Air Busan (100%), Delta (100%), Korean Air (100%).

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

    While on average a flight from Seoul to Chiang Mai is generally $937, our data shows the cheapest flight currently is $158. When looking at the most popular route, (Seoul Gimpo Intl - Chiang Mai), you can expect to pay $452 for that flight.

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

    Yes. In addition to deals on Seoul to Chiang Mai flights, Cheapflights offers vacation packages that include both flights and hotel.

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

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seoul to Chiang Mai.

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

    Yes. Cheapflights offers flight deals from Seoul to Chiang Mai 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 Seoul to Chiang Mai?

    Currently, March is the cheapest month in which you can book a flight from Seoul to Chiang Mai (average of $66). Flying from Seoul to Chiang Mai in December is currently the most expensive (average of $516). 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 Seoul to Chiang Mai

See prices for flight routes from nearby airports that may be better suited for you.
Incheon Intl to Suvarnabhumi flights
Busan to Suvarnabhumi flights
Incheon Intl to Phuket City flights
Incheon Intl to Chiang Mai flights

Top 5 airlines flying from Seoul to Chiang Mai

Discover the top 5 airlines that operate flights from Seoul to Chiang Mai. 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 2,558,603 searches. Data last updated May 22, 2026.
AirlineCheapestAverageFlexibilityOn-time
Eastar JetCheapest$69Average$339FlexibilityNo cancel feeOn-time86%
Jeju AirCheapest$105Average$355FlexibilityNo cancel feeOn-timeN/A
Jin AirCheapest$224Average$398FlexibilityNo cancel feeOn-time78%
Asiana AirlinesCheapest$296Average$364FlexibilityNo cancel feeOn-time76%
Korean AirCheapest$371Average$555FlexibilityNo cancel feeOn-time81%

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