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Chiang Mai

$67+ 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 9/20. Fares are subject to change and may not be available on all flights or dates of travel.
SEL — CNX
jul. 6 — jul. 131
dom. 7/6
dom. 7/13
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 44 days in advance, depart on a Saturday or Monday and return on a Friday

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 julio 1, 2025.

Round-trip from

$205
(Eastar Jet)

One-way from

$67
(Eastar Jet)

Popular in

January

Cheapest in

June

Average price

$305

Good round-trip deal

$361 or less

Good one-way deal

$141 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. 25% potential increase in price ($105 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($17 potential savings vs. average RT price).
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Average for round-trip flights in July 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 julio 1, 2025.

This Eastar Jet deal was found by Cheapflights users on 6/29. 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 Eastar Jet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 9/66:30 pmICN - CNX
Nonstop6h 10mEastar Jet
sáb. 9/1311:55 pmCNX - ICN
Nonstop5h 15mEastar Jet
Deal found 6/29$190
This Jin Air deal was found by Cheapflights users on 6/29. 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 Jin Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 9/155:10 pmICN - CNX
Nonstop5h 35mJin Air
mié. 9/249:45 pmCNX - ICN
Nonstop5h 20mJin Air
Deal found 6/29$214
This Jeju Air deal was found by Cheapflights users on 6/30. 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 Jeju Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 9/206:00 pmICN - CNX
Nonstop5h 35mJeju Air
vie. 9/2610:35 pmCNX - ICN
Nonstop5h 15mJeju Air
Deal found 6/30$232
This Mytrip deal was found by Cheapflights users on 6/30. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 9/136:00 pmICN - CNX
Nonstop5h 35mMultiple Airlines
sáb. 9/2011:30 pmCNX - ICN
2 stops28h 45mMultiple Airlines
Deal found 6/30$274
This FlightHub deal was found by Cheapflights users on 6/30. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 9/138:50 pmGMP - CNX
1 stop18h 35mMultiple Airlines
sáb. 9/202:55 pmCNX - GMP
1 stop18h 05mMultiple Airlines
Deal found 6/30$330
This FlightHub deal was found by Cheapflights users on 6/30. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 9/1312:00 pmGMP - CNX
2 stops23h 05mChina Eastern
sáb. 9/202:55 pmCNX - GMP
1 stop18h 05mChina Eastern
Deal found 6/30$356
This EVA Air deal was found by Cheapflights users on 6/29. 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.
vie. 9/121:50 pmGMP - CNX
1 stop22h 35mEVA Air
mar. 9/1611:35 amCNX - GMP
1 stop29h 40mEVA Air
Deal found 6/29$464
This oojo deal was found by Cheapflights users on 6/30. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 7/12:25 pmGMP - CNX
1 stop9h 25mAir China
mar. 7/811:05 pmCNX - GMP
1 stop12h 00mAir China
Deal found 6/30$495

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 julio 1, 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

mar. 8/19

6:30 pm-10:40 pm

Nonstop6h 10m

Chiang Mai

jue. 8/21

11:55 pm-7:10 am

Nonstop5h 15m

$205

IncheonChiang Mai

ICN - CNX

ICNCNX

Incheon Intl

lun. 9/15

5:10 pm-8:45 pm

Nonstop5h 35m

Chiang Mai

jue. 9/18

9:45 pm-5:05 am

Nonstop5h 20m

$225

IncheonChiang Mai

ICN - CNX

ICNCNX

Incheon Intl

sáb. 9/20

6:00 pm-9:35 pm

Nonstop5h 35m

Chiang Mai

vie. 9/26

10:35 pm-5:50 am

Nonstop5h 15m

$232

IncheonChiang Mai

ICN - CNX

ICNCNX

Incheon Intl

sáb. 9/13

6:00 pm-9:35 pm

Nonstop5h 35m

Chiang Mai

sáb. 9/20

11:30 pm-6:15 am

2 stops28h 45m

$274

SeoulChiang Mai

GMP - CNX

GMPCNX

Seoul Gimpo Intl

sáb. 9/13

8:50 pm-1:25 pm

1 stop18h 35m

Chiang Mai

sáb. 9/20

2:55 pm-11:00 am

1 stop18h 05m

$330

SeoulChiang Mai

GMP - CNX

GMPCNX

Seoul Gimpo Intl

sáb. 9/13

12:00 pm-9:05 am

2 stops23h 05m

Chiang Mai

sáb. 9/20

2:55 pm-11:00 am

1 stop18h 05m

$356

SeoulChiang Mai

GMP - CNX

GMPCNX

Seoul Gimpo Intl

vie. 9/12

1:50 pm-10:25 am

1 stop22h 35m

Chiang Mai

mar. 9/16

11:35 am-7:15 pm

1 stop29h 40m

$464

SeoulChiang Mai

GMP - CNX

GMPCNX

Seoul Gimpo Intl

jue. 7/31

2:25 pm-9:50 pm

1 stop9h 25m

Chiang Mai

jue. 8/7

11:05 pm-1:05 pm

1 stop12h 00m

$504

IncheonChiang Mai

ICN - CNX

ICNCNX

Incheon Intl

sáb. 9/20

6:30 pm-10:40 pm

Nonstop6h 10m

$67

IncheonChiang Mai

ICN - CNX

ICNCNX

Incheon Intl

mar. 8/26

8:15 am-4:50 pm

1 stop10h 35m

$98

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/30

Showing 1-10 of 19 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, April is the cheapest month in which you can book a flight from Seoul to Chiang Mai (average of $1,010). Flying from Seoul to Chiang Mai in December is currently the most expensive (average of $1,639). 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 julio 1, 2025.

A simple way to save on the total cost of your ticket is to fly from Seoul to Chiang Mai at noon. If you’re flexible enough to do this you can expect to save up to 44% 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 June 29, 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 julio 1, 2025.

The most flights from SEL to CNX are scheduled on a Monday (7 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (5 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 julio 1, 2025.
Read through reviews of airlines operating flights from Seoul to Chiang Mai, such as EVA Air, China Southern, and Air China. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
EVA Air
8.4
Very good
1,212 reviews

Crew

8.6

Boarding

8.4

Food

8.1

Overall

8.4

Entertainment

8.0

Comfort

8.3

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
1,212 reviews
EVA Air
8.4
Very good
1,212 reviews

Crew

8.6

Boarding

8.4

Food

8.1

Overall

8.4

Entertainment

8.0

Comfort

8.3

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 Southern
7.6
Good
100 reviews
EVA Air
8.4
Very good
1,212 reviews

Crew

8.6

Boarding

8.4

Food

8.1

Overall

8.4

Entertainment

8.0

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

TPE - SEA

The flight and crew were exceptional as always when I fly with EVA.
Air China
7.2
Good
92 reviews
EVA Air
8.4
Very good
1,212 reviews

Crew

8.6

Boarding

8.4

Food

8.1

Overall

8.4

Entertainment

8.0

Comfort

8.3

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 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. 6 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.

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

    Currently priced at $205, 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 Jin Air and Jeju Air - these airlines can fly you to your destination from $225 and $232, respectively. You may be able to fly from Seoul to Chiang Mai for 35% 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 Eastar Jet. According to our data, you can fly for as low as $67. Users have also found prices from $100 and $104 on Jeju Air and China Southern, 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: Eastar Jet (86%), Thai Airways (83%), Asiana Airlines (83%).

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

    While on average a flight from Seoul to Chiang Mai is generally $710, our data shows the cheapest flight currently is $103. When looking at the most popular route, (Seoul Gimpo Intl - Chiang Mai), you can expect to pay $398 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, April is the cheapest month in which you can book a flight from Seoul to Chiang Mai (average of $1,010). Flying from Seoul to Chiang Mai in December is currently the most expensive (average of $1,639). 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.
Gimpo Intl to Suvarnabhumi flights
Incheon Intl to Suvarnabhumi flights
Incheon Intl to Phuket City flights
Incheon Intl to Chiang Mai flights
Busan to Suvarnabhumi flights

Top 6 airlines flying from Seoul to Chiang Mai

Discover the top 6 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 julio 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
Eastar JetCheapest$122Average$268FlexibilityNo cancel feeOn-time86%
Jeju AirCheapest$184Average$249FlexibilityNo cancel feeOn-timeN/A
Jin AirCheapest$194Average$282FlexibilityNo cancel feeOn-time78%
Air ChinaCheapest$204Average$219FlexibilityNo cancel feeOn-time67%
Asiana AirlinesCheapest$255Average$391FlexibilityNo cancel feeOn-time76%
Korean AirCheapest$319Average$532FlexibilityNo cancel feeOn-time81%

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