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Chiang Mai

$117+ 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 12/9. Fares are subject to change and may not be available on all flights or dates of travel.
SEL — CNX
Jan 3 — Jan 101
Sat 1/3
Sat 1/10
1 adult, Economy
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Cheapflights Tip: The best prices from Seoul to Chiang Mai are usually found in June or March, booked 64 days in advance, depart on a Saturday or Thursday and return on a Sunday

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 December 4, 2025.

This Jeju Air deal was found by Cheapflights users on 12/3. 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.
Wed 12/37:10 pmICN - CNX
Nonstop6h 35mJeju Air
Sun 12/712:45 amCNX - ICN
Nonstop4h 45mJeju Air
Deal found 12/3$270
This Kiwi.com deal was found by Cheapflights users on 12/4. 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.
Wed 12/105:55 pmICN - CNX
1 stop16h 45mMultiple Airlines
Thu 12/259:50 pmCNX - ICN
Nonstop5h 40mMultiple Airlines
Deal found 12/4$273
This Jeju Air deal was found by Cheapflights users on 12/3. 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.
Wed 12/37:10 pmICN - CNX
Nonstop6h 35mJeju Air
Sat 12/612:45 amCNX - ICN
Nonstop4h 45mJeju Air
Deal found 12/3$274
This Jeju Air deal was found by Cheapflights users on 12/3. 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.
Thu 12/47:10 pmICN - CNX
Nonstop6h 35mJeju Air
Sun 12/712:45 amCNX - ICN
Nonstop4h 45mJeju Air
Deal found 12/3$283
This Kiwi.com deal was found by Cheapflights users on 12/2. 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.
Tue 12/237:25 amICN - CNX
1 stop10h 00mChina Eastern
Sun 12/2810:05 amCNX - ICN
1 stop10h 40mChina Eastern
Deal found 12/2$287
This Booking.com deal was found by Cheapflights users on 12/3. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/95:25 pmICN - CNX
Nonstop5h 25mEastar Jet
Sun 12/149:50 pmCNX - ICN
Nonstop5h 40mEastar Jet
Deal found 12/3$293
This Kiwi.com deal was found by Cheapflights users on 12/2. 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.
Tue 12/237:25 amICN - CNX
1 stop27h 40mChina Eastern
Wed 12/3110:05 amCNX - ICN
1 stop10h 40mChina Eastern
Deal found 12/2$294
This Kiwi.com deal was found by Cheapflights users on 12/2. 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.
Thu 12/182:25 pmGMP - CNX
1 stop9h 25mAir China
Sat 12/2711:05 pmCNX - GMP
1 stop12h 00mAir China
Deal found 12/2$299
This Kiwi.com deal was found by Cheapflights users on 12/3. 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.
Tue 12/95:55 pmICN - CNX
1 stop16h 45mMultiple Airlines
Sun 12/149:50 pmCNX - ICN
Nonstop5h 40mMultiple Airlines
Deal found 12/3$300
This Mytrip deal was found by Cheapflights users on 12/3. 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 12/97:25 amICN - CNX
1 stop27h 40mChina Eastern
Sun 12/1410:05 amCNX - ICN
1 stop10h 40mChina Eastern
Deal found 12/3$301
This Kiwi.com deal was found by Cheapflights users on 12/4. 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.
Wed 12/105:25 pmICN - CNX
Nonstop5h 25mEastar Jet
Thu 12/259:50 pmCNX - ICN
Nonstop5h 40mEastar Jet
Deal found 12/4$310
This Jeju Air deal was found by Cheapflights users on 12/3. 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.
Wed 12/37:10 pmICN - CNX
Nonstop6h 35mJeju Air
Sun 12/1412:45 amCNX - ICN
Nonstop4h 45mJeju Air
Deal found 12/3$311

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 December 4, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$234
(oojo)

One-way from

$108
(oojo)

Popular in

January

Cheapest in

June

Average price

$413

Good round-trip deal

$341 or less

Good one-way deal

$186 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. 20% potential increase in price ($78 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($15 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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 December 4, 2025.
Use the filters below to find and compare flights from Seoul to Chiang Mai that are best for you.

Fly from

Seoul

Fly to

Chiang Mai

Route

Depart

Return

Price

SeoulChiang Mai

GMP - CNX

GMPCNX

Seoul Gimpo Intl

Sun 1/18

2:25 pm-9:50 pm

1 stop9h 25m

Chiang Mai

Sun 1/25

11:05 pm-1:05 pm

1 stop12h 00m

$234

SeoulChiang Mai

GMP - CNX

GMPCNX

Seoul Gimpo Intl

Wed 1/28

2:25 pm-9:50 pm

1 stop9h 25m

Chiang Mai

Sun 2/1

11:05 pm-1:05 pm

1 stop12h 00m

$288

IncheonChiang Mai

ICN - CNX

ICNCNX

Incheon Intl

Sun 12/14

7:10 pm-11:45 pm

Nonstop6h 35m

Chiang Mai

Thu 12/18

12:45 am-7:30 am

Nonstop4h 45m

$313

IncheonChiang Mai

ICN - CNX

ICNCNX

Incheon Intl

Thu 2/19

12:10 am-11:25 am

1 stop13h 15m

Chiang Mai

Wed 2/25

12:25 pm-6:30 am

1 stop16h 05m

$331

IncheonChiang Mai

ICN - CNX

ICNCNX

Incheon Intl

Tue 2/10

7:35 am-8:40 am

1 stop27h 05m

Chiang Mai

Thu 2/19

1:35 am-12:45 am

1 stop21h 10m

$358

IncheonChiang Mai

ICN - CNX

ICNCNX

Incheon Intl

Fri 2/20

4:15 pm-8:30 pm

Nonstop6h 15m

Chiang Mai

Wed 2/25

9:40 pm-4:45 am

Nonstop5h 05m

$358

IncheonChiang Mai

ICN - CNX

ICNCNX

Incheon Intl

Thu 2/19

7:10 pm-11:45 pm

Nonstop6h 35m

Chiang Mai

Thu 2/26

12:45 am-7:30 am

Nonstop4h 45m

$367

IncheonChiang Mai

ICN - CNX

ICNCNX

Incheon Intl

Mon 2/9

5:55 pm-8:40 am

1 stop16h 45m

Chiang Mai

Wed 2/18

5:20 pm-12:45 am

2 stops29h 25m

$369

IncheonChiang Mai

ICN - CNX

ICNCNX

Incheon Intl

Sat 2/21

4:15 pm-8:30 pm

Nonstop6h 15m

Chiang Mai

Sat 2/28

9:40 pm-4:45 am

Nonstop5h 05m

$369

SeoulChiang Mai

GMP - CNX

GMPCNX

Seoul Gimpo Intl

Sun 1/18

7:00 am-9:50 pm

2 stops16h 50m

Chiang Mai

Sun 1/25

11:05 pm-3:50 pm

2 stops14h 45m

$387

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/3

Showing 1-10 of 46 results
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Compare providers for flights from Seoul to Chiang Mai

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seoul to Chiang Mai in December.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Seoul-Chiang Mai flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Seoul-Chiang Mai flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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

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

Use this chart to determine the optimal time to book a round-trip flight from Seoul to Chiang Mai. Price data was last updated on November 28, 2025.

Booking 64 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.

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

Currently, June is the cheapest month in which you can book a flight from Seoul to Chiang Mai (average of $141). Flying from Seoul to Chiang Mai in January is currently the most expensive (average of $250). 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 December 4, 2025.

A simple way to save on the total cost of your ticket is to fly from Seoul to Chiang Mai in the afternoon. If you’re flexible enough to do this you can expect to save up to 48% on your trip compared to booking a flight at noon.

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 December 4, 2025.

The most flights from SEL to CNX are scheduled on a Wednesday (6 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (4 on average).

How much does it cost to fly round-trip from Seoul to Chiang Mai?

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 December 4, 2025.
Read through reviews of airlines operating flights from Seoul to Chiang Mai, such as Jin Air, Korean Air, and Asiana Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Jin Air
8.7
Very good
20 reviews

Crew

9.1

Food

7.9

Comfort

8.3

Overall

8.7

Boarding

8.8

Entertainment

7.9
Jin Air
8.7
Very good
20 reviews
Jin Air
8.7
Very good
20 reviews

Crew

9.1

Food

7.9

Comfort

8.3

Overall

8.7

Boarding

8.8

Entertainment

7.9
Korean Air
8.4
Very good
1,179 reviews
Jin Air
8.7
Very good
20 reviews

Crew

9.1

Food

7.9

Comfort

8.3

Overall

8.7

Boarding

8.8

Entertainment

7.9
Asiana Airlines
8.2
Very good
490 reviews
Jin Air
8.7
Very good
20 reviews

Crew

9.1

Food

7.9

Comfort

8.3

Overall

8.7

Boarding

8.8

Entertainment

7.9
Jeju Air
7.6
Good
36 reviews
Jin Air
8.7
Very good
20 reviews

Crew

9.1

Food

7.9

Comfort

8.3

Overall

8.7

Boarding

8.8

Entertainment

7.9

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 5 inbound flights from Seoul per day.

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

    This flight path from Seoul to Chiang Mai was viewed by 3 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 Seoul to Chiang Mai?

    Air China, Jeju Air, and Malaysia Airlines can get you from Seoul to Chiang Mai in just under 6h 35m. Your travel time can differ by up to 6h 40m. There are 2099 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 $112, Jeju Air will fly you from Seoul to Chiang Mai and back. In addition to Jeju Air, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Jin Air and Eastar Jet - these airlines can fly you to your destination from $186 and $222, respectively. You may be able to fly from Seoul to Chiang Mai for 64% 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 $79. Users have also found prices from $86 and $115 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: Thai Airways (96%), Asiana Airlines (96%), Delta (83%).

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

    While on average a flight from Seoul to Chiang Mai is generally $881, our data shows the cheapest flight currently is $121. When looking at the most popular route, (Incheon Intl - Chiang Mai), you can expect to pay $234 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, June is the cheapest month in which you can book a flight from Seoul to Chiang Mai (average of $141). Flying from Seoul to Chiang Mai in January is currently the most expensive (average of $250). 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

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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
Gimpo Intl to Suvarnabhumi flights
Incheon Intl to Phuket City flights
Incheon Intl to Chiang Mai flights
Busan to Suvarnabhumi 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 December 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
Jeju AirCheapest$140Average$286FlexibilityNo cancel feeOn-timeN/A
Jin AirCheapest$204Average$373FlexibilityNo cancel feeOn-time78%
Eastar JetCheapest$222Average$329FlexibilityNo cancel feeOn-time86%
Asiana AirlinesCheapest$255Average$364FlexibilityNo cancel feeOn-time76%
Korean AirCheapest$332Average$556FlexibilityNo cancel feeOn-time81%

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