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Chiang Mai

$75+ 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 10/16. Fares are subject to change and may not be available on all flights or dates of travel.
SEL — CNX
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
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 45 days in advance, depart on a Friday or Thursday and return on a Thursday

Cheap 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 September 15, 2025.

Round-trip from

$182
(Jeju Air)

One-way from

$75
(Booking.com)

Popular in

January

Cheapest in

June

Average price

$249

Good round-trip deal

$294 or less

Good one-way deal

$85 or less
From Seoul (SEL) to Chiang Mai
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One-way flight from Seoul (SEL) to Chiang Mai
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Highest demand for flights based on searches. 24% potential increase in price ($103 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($15 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Seoul (SEL) to Chiang Mai.
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Price to beat on a one-way flight from Seoul (SEL) to Chiang Mai.
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Find 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 September 15, 2025.

This Jeju Air deal was found by Cheapflights users on 9/13. 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 10/96:00 pmICN - CNX
Nonstop5h 35mJeju Air
Fri 10/1710:35 pmCNX - ICN
Nonstop5h 15mJeju Air
Deal found 9/13$182
This Booking.com deal was found by Cheapflights users on 9/14. 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 10/136:00 pmICN - CNX
Nonstop5h 35mJeju Air
Sun 10/1910:35 pmCNX - ICN
Nonstop5h 15mJeju Air
Deal found 9/14$192
This Jeju Air deal was found by Cheapflights users on 9/15. 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 10/166:00 pmICN - CNX
Nonstop5h 35mJeju Air
Mon 10/2010:35 pmCNX - ICN
Nonstop5h 15mJeju Air
Deal found 9/15$195
This Kiwi.com deal was found by Cheapflights users on 9/14. 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 9/176:30 pmICN - CNX
Nonstop6h 10mEastar Jet
Sat 9/2011:55 pmCNX - ICN
Nonstop5h 15mEastar Jet
Deal found 9/14$201
This AirAsia deal was found by Cheapflights users on 9/14. 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 AirAsia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/198:15 amICN - CNX
1 stop10h 35mMultiple Airlines
Sat 11/13:10 pmCNX - ICN
1 stop26h 35mMultiple Airlines
Deal found 9/14$203
This Jeju Air deal was found by Cheapflights users on 9/14. 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 9/246:00 pmICN - CNX
Nonstop5h 35mJeju Air
Sun 9/2810:35 pmCNX - ICN
Nonstop5h 15mJeju Air
Deal found 9/14$207
This Jeju Air deal was found by Cheapflights users on 9/15. 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.
Sat 9/206:00 pmICN - CNX
Nonstop5h 35mJeju Air
Thu 9/2510:35 pmCNX - ICN
Nonstop5h 15mJeju Air
Deal found 9/15$209
This Jin Air deal was found by Cheapflights users on 9/14. 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.
Mon 9/225:10 pmICN - CNX
Nonstop5h 35mJin Air
Sun 9/289:45 pmCNX - ICN
Nonstop5h 20mJin Air
Deal found 9/14$224
This AirAsia deal was found by Cheapflights users on 9/14. 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 AirAsia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/238:15 amICN - CNX
1 stop10h 35mMultiple Airlines
Mon 10/2710:10 pmCNX - ICN
1 stop9h 55mMultiple Airlines
Deal found 9/14$225
This Jeju Air deal was found by Cheapflights users on 9/15. 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.
Fri 10/106:00 pmICN - CNX
Nonstop5h 35mJeju Air
Thu 11/1312:45 amCNX - ICN
Nonstop4h 45mJeju Air
Deal found 9/15$237
This Kiwi.com deal was found by Cheapflights users on 9/13. 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 11/2210:55 pmICN - CNX
1 stop17h 40mMultiple Airlines
Sat 11/293:10 pmCNX - ICN
1 stop16h 55mMultiple Airlines
Deal found 9/13$250
This Jin Air deal was found by Cheapflights users on 9/15. 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.
Sat 9/275:10 pmICN - CNX
Nonstop5h 35mJin Air
Wed 10/19:45 pmCNX - ICN
Nonstop5h 20mJin Air
Deal found 9/15$253

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 September 15, 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

IncheonChiang Mai

ICN - CNX

ICNCNX

Incheon Intl

Thu 10/16

6:00 pm-9:35 pm

Nonstop5h 35m

Chiang Mai

Sun 10/19

10:35 pm-5:50 am

Nonstop5h 15m

$209

IncheonChiang Mai

ICN - CNX

ICNCNX

Incheon Intl

Fri 10/10

6:00 pm-9:35 pm

Nonstop5h 35m

Chiang Mai

Thu 11/13

12:45 am-7:30 am

Nonstop4h 45m

$237

IncheonChiang Mai

ICN - CNX

ICNCNX

Incheon Intl

Sat 9/27

5:10 pm-8:45 pm

Nonstop5h 35m

Chiang Mai

Wed 10/1

9:45 pm-5:05 am

Nonstop5h 20m

$253

SeoulChiang Mai

GMP - CNX

GMPCNX

Seoul Gimpo Intl

Wed 10/29

2:25 pm-9:50 pm

1 stop9h 25m

Chiang Mai

Wed 11/5

6:10 pm-1:05 pm

1 stop16h 55m

$301

SeoulChiang Mai

GMP - CNX

GMPCNX

Seoul Gimpo Intl

Sun 11/23

2:25 pm-9:50 pm

1 stop9h 25m

Chiang Mai

Fri 11/28

11:05 pm-1:05 pm

1 stop12h 00m

$301

SeoulChiang Mai

GMP - CNX

GMPCNX

Seoul Gimpo Intl

Thu 11/20

2:25 pm-9:50 pm

1 stop9h 25m

Chiang Mai

Mon 11/24

11:05 pm-1:05 pm

1 stop12h 00m

$303

SeoulChiang Mai

GMP - CNX

GMPCNX

Seoul Gimpo Intl

Wed 11/26

2:25 pm-9:50 pm

1 stop9h 25m

Chiang Mai

Thu 11/27

11:05 pm-1:05 pm

1 stop12h 00m

$323

SeoulChiang Mai

GMP - CNX

GMPCNX

Seoul Gimpo Intl

Tue 11/25

2:25 pm-9:50 pm

1 stop9h 25m

Chiang Mai

Thu 11/27

11:05 pm-1:05 pm

1 stop12h 00m

$323

SeoulChiang Mai

GMP - CNX

GMPCNX

Seoul Gimpo Intl

Mon 11/24

2:25 pm-9:50 pm

1 stop9h 25m

Chiang Mai

Fri 11/28

11:05 pm-1:05 pm

1 stop12h 00m

$323

SeoulChiang Mai

GMP - CNX

GMPCNX

Seoul Gimpo Intl

Sat 11/22

2:25 pm-9:50 pm

1 stop9h 25m

Chiang Mai

Tue 11/25

11:05 pm-1:05 pm

1 stop12h 00m

$323

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Showing 1-10 of 42 results
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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, September is the cheapest month in which you can book a flight from Seoul to Chiang Mai (average of $975). Flying from Seoul to Chiang Mai in June is currently the most expensive (average of $1,562). 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 September 15, 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 43% on your trip compared to booking a flight in the morning.

What is the cheapest day to fly from Seoul to Chiang Mai?

Use this chart to determine the cheapest time to fly round-trip from Seoul to Chiang Mai. Price data was last updated on September 14, 2025.

Travelers seeking maximum savings on their Seoul to Chiang Mai flight should consider departing on Friday at noon when fares are most often at their lowest. Friday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

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 September 15, 2025.

The most flights from SEL to CNX are scheduled on a Wednesday (8 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (6 on average).

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 September 15, 2025.
Read through reviews of airlines operating flights from Seoul to Chiang Mai, such as Korean Air and Asiana Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very good
1,139 reviews

Entertainment

8.2

Boarding

8.5

Crew

8.7

Food

8.1

Overall

8.4

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
Korean Air
8.4
Very good
1,139 reviews
Korean Air
8.4
Very good
1,139 reviews

Entertainment

8.2

Boarding

8.5

Crew

8.7

Food

8.1

Overall

8.4

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
Asiana Airlines
8.2
Very good
479 reviews
Korean Air
8.4
Very good
1,139 reviews

Entertainment

8.2

Boarding

8.5

Crew

8.7

Food

8.1

Overall

8.4

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!

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 7 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?

    Jeju Air, Jin Air, and Air China can get you from Seoul to Chiang Mai in just under 5h 35m. Your travel time can differ by up to 3h 50m. 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 $122, 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 $169 and $194, respectively. You may be able to fly from Seoul to Chiang Mai for 61% less than the average price by searching for these airlines.

  • 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: Eastar Jet (94%), Thai Airways (90%), Asiana Airlines (90%).

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

    While on average a flight from Seoul to Chiang Mai is generally $272, our data shows the cheapest flight currently is $94. When looking at the most popular route, (Incheon Intl - Chiang Mai), you can expect to pay $196 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, September is the cheapest month in which you can book a flight from Seoul to Chiang Mai (average of $975). Flying from Seoul to Chiang Mai in June is currently the most expensive (average of $1,562). 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 Chiang Mai flights
Busan to Suvarnabhumi flights
Incheon Intl to Phuket City 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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
Eastar JetCheapest$122Average$297FlexibilityNo cancel feeOn-time86%
Jeju AirCheapest$169Average$310FlexibilityNo cancel feeOn-timeN/A
Jin AirCheapest$194Average$355FlexibilityNo cancel feeOn-time78%
Asiana AirlinesCheapest$255Average$351FlexibilityNo cancel feeOn-time76%
Korean AirCheapest$332Average$565FlexibilityNo cancel feeOn-time81%

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