HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Seoul

$127+ 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 6/12. Fares are subject to change and may not be available on all flights or dates of travel.
CNX — SEL
May 6 — May 131
Tue 5/6
Tue 5/13
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Chiang Mai to Seoul with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 May 1, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$249
(Kiwi.com)

One-way from

$127
(Mytrip)

Popular in

January

Cheapest in

August

Average price

$356

Good round-trip deal

$983 or less

Good one-way deal

$543 or less
Provider with most accurate pricing for Chiang Mai-Seoul (SEL) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chiang Mai-Seoul (SEL) flights.
Search Deals
From Chiang Mai to Seoul (SEL)
Search Deals
One-way flight from Chiang Mai to Seoul (SEL)
Search Deals
Highest demand for flights based on searches. 19% potential increase in price ($88 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($11 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2025
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

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 May 1, 2025.

This Kiwi.com deal was found by Cheapflights users on 4/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/110:30 amCNX - ICN
1 stop23h 20mMultiple Airlines
Thu 6/511:35 amICN - CNX
1 stop9h 55mMultiple Airlines
Deal found 4/30$249
This Booking.com deal was found by Cheapflights users on 4/30. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/126:50 pmCNX - ICN
1 stop17h 05mChina Southern
Sun 5/1810:20 amICN - CNX
1 stop9h 30mChina Southern
Deal found 4/30$256
This Booking.com deal was found by Cheapflights users on 4/30. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/2210:05 amCNX - ICN
3 stops22h 50mChina Eastern
Thu 5/294:35 pmICN - CNX
2 stops18h 30mChina Eastern
Deal found 4/30$317
This Kiwi.com deal was found by Cheapflights users on 4/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/2211:55 pmCNX - ICN
Nonstop5h 15mEastar Jet
Thu 5/296:30 pmICN - CNX
Nonstop6h 10mEastar Jet
Deal found 4/30$354
This Kiwi.com deal was found by Cheapflights users on 4/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/111:10 pmCNX - GMP
1 stop7h 55mMultiple Airlines
Thu 6/52:50 pmGMP - CNX
1 stop9h 20mMultiple Airlines
Deal found 4/30$606
This Kiwi.com deal was found by Cheapflights users on 4/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/3112:45 amCNX - ICN
Nonstop5h 05mAsiana Airlines
Thu 6/57:50 pmICN - CNX
Nonstop5h 50mAsiana Airlines
Deal found 4/30$669
This Malaysia Airlines deal was found by Cheapflights users on 4/30. 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 Malaysia Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/112:35 pmCNX - ICN
1 stop16h 35mMalaysia Airlines
Wed 6/412:10 amICN - CNX
2 stops21h 00mMalaysia Airlines
Deal found 4/30$697
This EVA Air deal was found by Cheapflights users on 4/29. 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 EVA Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/611:35 amCNX - GMP
1 stop28h 35mEVA Air
Fri 10/101:50 pmGMP - CNX
1 stop22h 35mEVA Air
Deal found 4/29$922
This Japan Airlines deal was found by Cheapflights users on 4/30. 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.
Sat 6/1411:55 amCNX - GMP
2 stops20h 50mJapan Airlines
Sat 6/217:20 pmGMP - CNX
2 stops17h 55mJapan Airlines
Deal found 4/30$983
This Priceline deal was found by Cheapflights users on 4/30. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/2211:05 pmCNX - GMP
1 stop13h 05mAir China
Thu 5/292:25 pmGMP - CNX
1 stop9h 25mAir China
Deal found 4/30$991
This Korean Air deal was found by Cheapflights users on 4/30. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/711:15 pmCNX - ICN
Nonstop5h 25mKorean Air
Thu 5/156:25 pmICN - CNX
Nonstop5h 30mKorean Air
Deal found 4/30$1,777

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 May 1, 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

Sun 6/1

10:30 am-11:50 am

1 stop23h 20m

Incheon Intl

Thu 6/5

11:35 am-7:30 pm

1 stop9h 55m

$249

Chiang MaiIncheon

CNX - ICN

CNXICN

Chiang Mai

Mon 5/12

6:50 pm-1:55 pm

1 stop17h 05m

Incheon Intl

Sun 5/18

10:20 am-5:50 pm

1 stop9h 30m

$256

Chiang MaiIncheon

CNX - ICN

CNXICN

Chiang Mai

Thu 5/22

10:05 am-10:55 am

3 stops22h 50m

Incheon Intl

Thu 5/29

4:35 pm-9:05 am

2 stops18h 30m

$317

Chiang MaiIncheon

CNX - ICN

CNXICN

Chiang Mai

Thu 5/22

11:55 pm-7:10 am

Nonstop5h 15m

Incheon Intl

Thu 5/29

6:30 pm-10:40 pm

Nonstop6h 10m

$354

Chiang MaiSeoul

CNX - GMP

CNXGMP

Chiang Mai

Sun 6/1

11:10 pm-9:05 am

1 stop7h 55m

Seoul Gimpo Intl

Thu 6/5

2:50 pm-10:10 pm

1 stop9h 20m

$606

Chiang MaiIncheon

CNX - ICN

CNXICN

Chiang Mai

Sat 5/31

12:45 am-7:50 am

Nonstop5h 05m

Incheon Intl

Thu 6/5

7:50 pm-11:40 pm

Nonstop5h 50m

$669

Chiang MaiIncheon

CNX - ICN

CNXICN

Chiang Mai

Sun 6/1

12:35 pm-7:10 am

1 stop16h 35m

Incheon Intl

Wed 6/4

12:10 am-7:10 pm

2 stops21h 00m

$697

Chiang MaiSeoul

CNX - GMP

CNXGMP

Chiang Mai

Mon 10/6

11:35 am-6:10 pm

1 stop28h 35m

Seoul Gimpo Intl

Fri 10/10

1:50 pm-10:25 am

1 stop22h 35m

$922

Chiang MaiSeoul

CNX - GMP

CNXGMP

Chiang Mai

Sat 6/14

11:55 am-10:45 am

2 stops20h 50m

Seoul Gimpo Intl

Sat 6/21

7:20 pm-11:15 am

2 stops17h 55m

$983

Chiang MaiSeoul

CNX - GMP

CNXGMP

Chiang Mai

Thu 5/22

11:05 pm-2:10 pm

1 stop13h 05m

Seoul Gimpo Intl

Thu 5/29

2:25 pm-9:50 pm

1 stop9h 25m

$991

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

Showing 1-10 of 28 results
1
2
3

Compare providers for flights from Chiang Mai to Seoul

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 Chiang Mai to Seoul in May.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*2 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*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 Chiang Mai-Seoul flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Chiang Mai-Seoul flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Chiang Mai-Seoul flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Chiang Mai-Seoul 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 Chiang Mai-Seoul 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 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 $1,001). 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 May 1, 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 6% 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 May 1, 2025.

The most flights from CNX to SEL 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).

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 May 1, 2025.
EVA Air
8.4
Very good
1,186 reviews

Comfort

8.3

Food

8.1

Boarding

8.4

Overall

8.4

Entertainment

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop
EVA Air
8.4
Very good
1,186 reviews
EVA Air
8.4
Very good
1,186 reviews

Comfort

8.3

Food

8.1

Boarding

8.4

Overall

8.4

Entertainment

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop
Korean Air
8.4
Very good
1,068 reviews
EVA Air
8.4
Very good
1,186 reviews

Comfort

8.3

Food

8.1

Boarding

8.4

Overall

8.4

Entertainment

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop
Japan Airlines
8.3
Very good
1,459 reviews
EVA Air
8.4
Very good
1,186 reviews

Comfort

8.3

Food

8.1

Boarding

8.4

Overall

8.4

Entertainment

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop
China Airlines
8.3
Very good
732 reviews
EVA Air
8.4
Very good
1,186 reviews

Comfort

8.3

Food

8.1

Boarding

8.4

Overall

8.4

Entertainment

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop

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, China Southern ($256), China Eastern ($317), and Eastar Jet ($354) offers the cheapest pricing from Chiang Mai to Seoul. China Southern is 31% 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 Jin Air, with whom users have recently found tickets for as low as $127. However, be on the lookout for offers from HK Express 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 Jin Air (100%), Eastar Jet (97%) or Korean Air (88%) 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 $147. While the most popular route (Chiang Mai - Seoul Gimpo Intl) can be booked for $760 on average our data indicates $1,320 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 $1,001). 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

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.
Suvarnabhumi to Incheon Intl flights
Suvarnabhumi to Busan flights
Chiang Mai to Incheon Intl flights

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.