$118+ Cheap flights from Seoul (SEL) to Chiang Mai (CNX)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/30. Fares are subject to change and may not be available on all flights or dates of travel.
SEL — CNX
Nov 22 — Nov 291
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Seoul to Chiang Mai 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.Cheapflights Tip: The best prices from Seoul to Chiang Mai are usually found in March or April, booked 36 days in advance, depart on a Tuesday or Sunday and return on a Saturday
Cheap flight deals from Seoul to Chiang Mai
Cheapest
Best
Last-minute
One-way
Cheapest flights from Seoul to Chiang MaiExplore 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 October 23, 2026.
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 October 23, 2026.
This Jeju Air deal was found by Cheapflights users on 10/21. 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 Jeju Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/297:15 pm -
Nonstop6h 20m
Mon 11/212:35 am -
Nonstop4h 50m
Deal found 10/21![Jeju Air logo]()
$249
This Booking.com deal was found by Cheapflights users on 10/22. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/75:25 pm -
Nonstop5h 55m
Thu 11/1212:35 am -
Nonstop4h 50m
Deal found 10/22![Multiple Airlines logo]()
$254
This Jeju Air deal was found by Cheapflights users on 10/20. 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 Jeju Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/297:15 pm -
Nonstop6h 20m
Fri 10/3012:35 am -
Nonstop4h 50m
Deal found 10/20![Jeju Air logo]()
$263
This CheapOair deal was found by Cheapflights users on 10/22. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/67:15 pm -
Nonstop6h 20m
Tue 11/1010:20 pm -
Nonstop5h 10m
Deal found 10/22![Multiple Airlines logo]()
$279
This Booking.com deal was found by Cheapflights users on 10/23. 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.
Fri 11/67:15 pm -
Nonstop6h 20m
Mon 11/912:35 am -
Nonstop4h 50m
Deal found 10/23![Jeju Air logo]()
$280
This Jeju Air deal was found by Cheapflights users on 10/20. 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 Jeju Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/236:10 pm -
Nonstop5h 50m
Sun 10/2512:35 am -
Nonstop4h 50m
Deal found 10/20![Jeju Air logo]()
$282
This Jeju Air deal was found by Cheapflights users on 10/21. 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 Jeju Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/17:15 pm -
Nonstop6h 20m
Thu 11/512:35 am -
Nonstop4h 50m
Deal found 10/21![Jeju Air logo]()
$283
This Jeju Air deal was found by Cheapflights users on 10/20. 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 Jeju Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/216:10 pm -
Nonstop5h 50m
Thu 10/2912:35 am -
Nonstop4h 50m
Deal found 10/20![Jeju Air logo]()
$284
This SmartFares deal was found by Cheapflights users on 10/22. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/307:15 pm -
Nonstop6h 20m
Thu 11/512:35 am -
Nonstop4h 50m
Deal found 10/22![Jeju Air logo]()
$286
This CheapOair deal was found by Cheapflights users on 10/23. 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.
Tue 10/274:45 pm -
Nonstop5h 55m
Thu 11/1212:35 am -
Nonstop4h 50m
Deal found 10/23![Multiple Airlines logo]()
$287
This CheapOair deal was found by Cheapflights users on 10/21. 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.
Mon 11/24:45 pm -
Nonstop5h 55m
Thu 11/1210:20 pm -
Nonstop5h 10m
Deal found 10/21![Multiple Airlines logo]()
$290
Best flights from Seoul to Chiang MaiDiscover carefully curated flight deals from Seoul to Chiang Mai that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 23, 2026.
Discover carefully curated flight deals from Seoul to Chiang Mai that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 23, 2026.
This Jin Air deal was found by Cheapflights users on 10/23. 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.
Fri 11/64:45 pm -
Nonstop5h 55m
Thu 11/129:40 pm -
Nonstop5h 05m
Deal found 10/23![Jin Air logo]()
$334
This Jetabroad deal was found by Cheapflights users on 10/23. 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 Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/411:50 am -
2 stops22h 45m
Wed 12/309:35 am -
2 stops23h 10m
Deal found 10/23![China Eastern logo]()
$391
This Jeju Air deal was found by Cheapflights users on 10/21. 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 Jeju Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/307:15 pm -
Nonstop6h 20m
Thu 12/1012:35 am -
Nonstop4h 50m
Deal found 10/21![Jeju Air logo]()
$396
This Booking.com deal was found by Cheapflights users on 10/23. 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.
Wed 11/47:00 pm -
Nonstop6h 10m
Wed 12/309:35 am -
1 stop11h 10m
Deal found 10/23![Multiple Airlines logo]()
$402
This Eastar Jet deal was found by Cheapflights users on 10/20. 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 Eastar Jet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/75:25 pm -
Nonstop5h 55m
Wed 3/1010:15 pm -
Nonstop5h 15m
Deal found 10/20![Eastar Jet logo]()
$464
This VietJet Air deal was found by Cheapflights users on 10/22. 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 VietJet Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/42:10 am -
2 stops15h 20m
Sun 4/114:30 pm -
1 stop24h 55m
Deal found 10/22![VietJet Air logo]()
$650
This Jeju Air deal was found by Cheapflights users on 10/20. 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 Jeju Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/227:15 pm -
Nonstop6h 20m
Thu 12/2412:35 am -
Nonstop4h 50m
Deal found 10/20![Jeju Air logo]()
$399
This Eastar Jet deal was found by Cheapflights users on 10/19. 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 Eastar Jet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/185:25 pm -
Nonstop5h 55m
Wed 12/2310:15 pm -
Nonstop5h 15m
Deal found 10/19![Eastar Jet logo]()
$495
This Jeju Air deal was found by Cheapflights users on 10/23. 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.
Tue 1/127:15 pm -
Nonstop6h 20m
Mon 1/1812:35 am -
Nonstop4h 50m
Deal found 10/23![Jeju Air logo]()
$509
This Eastar Jet deal was found by Cheapflights users on 10/21. 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 Eastar Jet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/45:25 pm -
Nonstop5h 55m
Wed 2/310:15 pm -
Nonstop5h 15m
Deal found 10/21![Eastar Jet logo]()
$519
This Jin Air deal was found by Cheapflights users on 10/22. 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.
Sun 11/294:45 pm -
Nonstop5h 55m
Fri 12/49:40 pm -
Nonstop5h 05m
Deal found 10/22![Jin Air logo]()
$595
This Jeju Air deal was found by Cheapflights users on 10/23. 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 1/137:15 pm -
Nonstop6h 20m
Fri 1/1512:35 am -
Nonstop4h 50m
Deal found 10/23![Jeju Air logo]()
$513
Last-minute flights from Seoul to Chiang MaiDiscover last-minute flight deals from Seoul to Chiang Mai. Data last updated October 23, 2026 and is based on user searches.
Discover last-minute flight deals from Seoul to Chiang Mai. Data last updated October 23, 2026 and is based on user searches.
This Jeju Air deal was found by Cheapflights users on 10/20. 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 Jeju Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/236:10 pm -
Nonstop5h 50m
Sun 10/2512:35 am -
Nonstop4h 50m
Deal found 10/20![Jeju Air logo]()
$282
This CheapOair deal was found by Cheapflights users on 10/23. 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.
Tue 10/274:45 pm -
Nonstop5h 55m
Thu 11/1212:35 am -
Nonstop4h 50m
Deal found 10/23![Multiple Airlines logo]()
$287
This Jeju Air deal was found by Cheapflights users on 10/21. 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 Jeju Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/297:15 pm -
Nonstop6h 20m
Mon 11/212:35 am -
Nonstop4h 50m
Deal found 10/21![Jeju Air logo]()
$249
This Jeju Air deal was found by Cheapflights users on 10/20. 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 Jeju Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/297:15 pm -
Nonstop6h 20m
Fri 10/3012:35 am -
Nonstop4h 50m
Deal found 10/20![Jeju Air logo]()
$263
This SmartFares deal was found by Cheapflights users on 10/22. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/307:15 pm -
Nonstop6h 20m
Thu 11/512:35 am -
Nonstop4h 50m
Deal found 10/22![Jeju Air logo]()
$286
This Jeju Air deal was found by Cheapflights users on 10/21. 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 Jeju Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/17:15 pm -
Nonstop6h 20m
Thu 11/512:35 am -
Nonstop4h 50m
Deal found 10/21![Jeju Air logo]()
$283
This CheapOair deal was found by Cheapflights users on 10/21. 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.
Mon 11/24:45 pm -
Nonstop5h 55m
Thu 11/1210:20 pm -
Nonstop5h 10m
Deal found 10/21![Multiple Airlines logo]()
$290
This CheapOair deal was found by Cheapflights users on 10/22. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/67:15 pm -
Nonstop6h 20m
Tue 11/1010:20 pm -
Nonstop5h 10m
Deal found 10/22![Multiple Airlines logo]()
$279
This Booking.com deal was found by Cheapflights users on 10/23. 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.
Fri 11/67:15 pm -
Nonstop6h 20m
Mon 11/912:35 am -
Nonstop4h 50m
Deal found 10/23![Jeju Air logo]()
$280
This Booking.com deal was found by Cheapflights users on 10/22. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/75:25 pm -
Nonstop5h 55m
Thu 11/1212:35 am -
Nonstop4h 50m
Deal found 10/22![Multiple Airlines logo]()
$254
This Booking.com deal was found by Cheapflights users on 10/22. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/297:15 pm -
Nonstop6h 20m
Wed 12/212:10 am -
Nonstop5h 00m
Deal found 10/22![Multiple Airlines logo]()
$291
One-way flights from Seoul to Chiang MaiSearch for one-way flight options from Seoul to Chiang Mai. Find affordable one-way fares based on user searches. Data last updated October 23, 2026.
Search for one-way flight options from Seoul to Chiang Mai. Find affordable one-way fares based on user searches. Data last updated October 23, 2026.
This Booking.com deal was found by Cheapflights users on 10/20. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/307:15 pm -
Nonstop6h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![Jeju Air logo]()
$118
This Kiwi.com deal was found by Cheapflights users on 10/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/27:00 pm -
Nonstop6h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/19![Air Busan logo]()
$125
This Eastar Jet deal was found by Cheapflights users on 10/20. 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 Eastar Jet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/75:25 pm -
Nonstop5h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![Eastar Jet logo]()
$127
This OneTravel deal was found by Cheapflights users on 10/20. 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 OneTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/77:00 pm -
Nonstop6h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![Air Busan logo]()
$130
This Booking.com deal was found by Cheapflights users on 10/23. 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 2/157:35 am -
1 stop27h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![AirAsia logo]()
$138
This Jin Air deal was found by Cheapflights users on 10/21. 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 Jin Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/304:45 pm -
Nonstop5h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Jin Air logo]()
$139
This FlightHub deal was found by Cheapflights users on 10/20. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/307:15 pm -
Nonstop6h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![Hahn Air Systems logo]()
$141
This Jeju Air deal was found by Cheapflights users on 10/22. 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 Jeju Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/157:15 pm -
Nonstop6h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![Jeju Air logo]()
$144
This Kiwi.com deal was found by Cheapflights users on 10/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/317:00 pm -
Nonstop6h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/19![Air Busan logo]()
$145
This Kiwi.com deal was found by Cheapflights users on 10/23. 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 3/187:35 am -
1 stop27h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![AirAsia logo]()
$147
This Kiwi.com deal was found by Cheapflights users on 10/23. 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.
Fri 3/197:35 am -
1 stop27h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![AirAsia logo]()
$149
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 October 23, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $254 (Booking.com) |
One-way from | $118 (Booking.com) |
Popular in | January |
Cheapest in | March |
Average price | $312 |
Good round-trip deal | $284 or less |
Good one-way deal | $167 or less |
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 7,457,451 searches. Data last updated October 23, 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
Cheapest round-trip
Quickest round-trip
IncheonChiang Mai
ICN Incheon Intl - CNX Chiang Mai
ICNCNX
Incheon Intl
Sat 11/7
5:25 pm-9:20 pm
Nonstop5h 55m
Chiang Mai
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$127
IncheonChiang Mai
ICN Incheon Intl - CNX Chiang Mai
ICNCNX
Incheon Intl
Fri 10/30
4:45 pm-8:40 pm
Nonstop5h 55m
Chiang Mai
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$139
IncheonChiang Mai
ICN Incheon Intl - CNX Chiang Mai
ICNCNX
Incheon Intl
Sun 11/1
7:15 pm-11:35 pm
Nonstop6h 20m
Chiang Mai
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$141
IncheonChiang Mai
ICN Incheon Intl - CNX Chiang Mai
ICNCNX
Incheon Intl
Fri 10/30
7:15 pm-11:35 pm
Nonstop6h 20m
Chiang Mai
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$141
IncheonChiang Mai
ICN Incheon Intl - CNX Chiang Mai
ICNCNX
Incheon Intl
Mon 11/16
7:15 pm-11:35 pm
Nonstop6h 20m
Chiang Mai
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$144
IncheonChiang Mai
ICN Incheon Intl - CNX Chiang Mai
ICNCNX
Incheon Intl
Sun 11/15
7:15 pm-11:35 pm
Nonstop6h 20m
Chiang Mai
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$144
IncheonChiang Mai
ICN Incheon Intl - CNX Chiang Mai
ICNCNX
Incheon Intl
Tue 3/9
12:10 pm-11:35 pm
1 stop13h 25m
Chiang Mai
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$173
IncheonChiang Mai
ICN Incheon Intl - CNX Chiang Mai
ICNCNX
Incheon Intl
Sun 12/20
7:15 pm-11:35 pm
Nonstop6h 20m
Chiang Mai
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$184
IncheonChiang Mai
ICN Incheon Intl - CNX Chiang Mai
ICNCNX
Incheon Intl
Sat 4/3
10:10 am-11:25 pm
1 stop15h 15m
Chiang Mai
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$188
IncheonChiang Mai
ICN Incheon Intl - CNX Chiang Mai
ICNCNX
Incheon Intl
Wed 12/2
4:20 pm-8:35 am
2 stops18h 15m
Chiang Mai
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$191
Showing 1-10 of 23 resultsSorted by cheapest first
- 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.
SEL-CNX
ICN-CNX
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
SEL-CNX
ICN-CNX
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 $242). Flying from Seoul to Chiang Mai in January is currently the most expensive (average of $391). 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 October 23, 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.
How much does it cost to fly round-trip from Seoul to Chiang Mai?
Airfare is below average for this route at the moment.
Seoul to Chiang Mai flights typically cost between $280 and $393 in November.The cheapest round-trip price found within the last 5 days was $254 on Multiple Airlines (Nov 7-Nov 12).
How far ahead should I book a flight from Seoul to Chiang Mai?
Booking 88 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 October 23, 2026.
Read through reviews of airlines operating flights from Seoul to Chiang Mai, such as Jin Air,Korean Air, andJeju Air. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
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.
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
Chiang Mai flight routes
Complete your trip
Flights by cabin class
Other flight options
Other flights from Seoul
Popular flights
Alternative routes for Seoul to Chiang Mai
See prices for flight routes from nearby airports that may be better suited for you.
Other flights to Chiang Mai
Explore flights to Chiang Mai departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on October 23, 2026.
Complete your trip
Complete your trip to Chiang Mai by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Seoul to Chiang Mai by cabin class
Find flights from Seoul to Chiang Mai, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Seoul and Chiang Mai flights
Browse other Seoul and Chiang Mai flight options. Last updated on October 23, 2026.
Other flights from Seoul
Browse through other flights departing from Seoul. Flights are based on user searches made on Cheapflights and were last updated on October 23, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 4 airlines flying from Seoul to Chiang Mai
Discover the top 4 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 7,457,451 searches. Data last updated October 23, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$144 | Average$314 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$191 | Average$339 | FlexibilityNo cancel fee | On-time86% | |
| Cheapest$224 | Average$330 | FlexibilityNo cancel fee | On-time78% | |
| Cheapest$418 | Average$632 | FlexibilityNo cancel fee | On-time81% |