$84+ 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 9/9. Fares are subject to change and may not be available on all flights or dates of travel.
SEL — CNX
Sep 28 — Oct 51
Round-trip
1 adult, Economy
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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 September or March, booked 22 days in advance, depart on a Saturday or Monday and return on a Friday
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 August 29, 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 August 29, 2026.
This Jeju Air deal was found by Cheapflights users on 8/25. 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 9/96:10 pm -
Nonstop5h 50m
Wed 9/3011:00 pm -
Nonstop5h 30m
Deal found 8/25![Jeju Air logo]()
$186
This CheapOair deal was found by Cheapflights users on 8/26. 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.
Sat 9/57:55 pm -
Nonstop5h 55m
Sat 9/1211:55 pm -
Nonstop5h 15m
Deal found 8/26![Multiple Airlines logo]()
$197
This Eastar Jet deal was found by Cheapflights users on 8/27. 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 9/276:30 pm -
Nonstop6h 00m
Thu 10/111:55 pm -
Nonstop5h 15m
Deal found 8/27![Eastar Jet logo]()
$204
This Eastar Jet deal was found by Cheapflights users on 8/24. 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.
Thu 9/106:30 pm -
Nonstop6h 00m
Thu 9/1711:55 pm -
Nonstop5h 15m
Deal found 8/24![Eastar Jet logo]()
$205
This Jeju Air deal was found by Cheapflights users on 8/28. 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 9/66:10 pm -
Nonstop5h 50m
Thu 9/1011:00 pm -
Nonstop5h 30m
Deal found 8/28![Jeju Air logo]()
$209
This Kiwi.com deal was found by Cheapflights users on 8/26. 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 9/296:10 pm -
Nonstop5h 50m
Wed 10/712:50 am -
Nonstop5h 25m
Deal found 8/26![Multiple Airlines logo]()
$214
This Trip.com deal was found by Cheapflights users on 8/26. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/267:55 pm -
Nonstop5h 55m
Thu 10/112:50 am -
Nonstop5h 25m
Deal found 8/26![Air Busan logo]()
$217
This CheapOair deal was found by Cheapflights users on 8/26. 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.
Sun 9/66:30 pm -
Nonstop6h 00m
Thu 9/1011:55 pm -
Nonstop5h 15m
Deal found 8/26![Eastar Jet logo]()
$222
This CheapOair deal was found by Cheapflights users on 8/27. 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.
Sat 9/56:30 pm -
Nonstop5h 40m
Sat 9/1211:55 pm -
Nonstop5h 15m
Deal found 8/27![Eastar Jet logo]()
$227
This Super.com deal was found by Cheapflights users on 8/26. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/152:25 pm -
1 stop9h 25m
Fri 11/2011:05 pm -
1 stop12h 00m
Deal found 8/26![Air China logo]()
$381
This SmartFares deal was found by Cheapflights users on 8/27. 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.
Tue 11/102:25 pm -
1 stop9h 25m
Fri 11/2011:05 pm -
1 stop12h 00m
Deal found 8/27![Air China logo]()
$386
This SmartFares deal was found by Cheapflights users on 8/29. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/132:25 pm -
1 stop9h 25m
Tue 10/2011:05 pm -
1 stop12h 00m
Deal found 8/29![Air China logo]()
$387
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 August 29, 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 August 29, 2026.
This Jeju Air deal was found by Cheapflights users on 8/27. 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 9/206:10 pm -
Nonstop5h 50m
Thu 9/2411:00 pm -
Nonstop5h 30m
Deal found 8/27![Jeju Air logo]()
$186
This Jin Air deal was found by Cheapflights users on 8/25. 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 9/275:20 pm -
Nonstop5h 25m
Sun 10/119:45 pm -
Nonstop5h 20m
Deal found 8/25![Jin Air logo]()
$313
This Malaysia Airlines deal was found by Cheapflights users on 8/28. 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 1/2412:10 am -
1 stop13h 15m
Fri 1/2912:25 pm -
1 stop31h 45m
Deal found 8/28![Malaysia Airlines logo]()
$359
This Super.com deal was found by Cheapflights users on 8/26. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/152:25 pm -
1 stop9h 25m
Fri 11/2011:05 pm -
1 stop12h 00m
Deal found 8/26![Air China logo]()
$381
This EVA Air deal was found by Cheapflights users on 8/24. 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.
Fri 9/111:50 pm -
1 stop22h 35m
Tue 9/1511:35 am -
1 stop29h 40m
Deal found 8/24![EVA Air logo]()
$500
This Jeju Air deal was found by Cheapflights users on 8/29. 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 Jeju Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/276:10 pm -
Nonstop5h 50m
Sun 10/1111:00 pm -
Nonstop5h 30m
Deal found 8/29![Jeju Air logo]()
$317
This Jeju Air deal was found by Cheapflights users on 8/25. 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 10/307:15 pm -
Nonstop6h 30m
Mon 11/212:45 am -
Nonstop4h 45m
Deal found 8/25![Jeju Air logo]()
$326
This SmartFares deal was found by Cheapflights users on 8/27. 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.
Tue 11/102:25 pm -
1 stop9h 25m
Fri 11/2011:05 pm -
1 stop12h 00m
Deal found 8/27![Air China logo]()
$386
This SmartFares deal was found by Cheapflights users on 8/29. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/132:25 pm -
1 stop9h 25m
Tue 10/2011:05 pm -
1 stop12h 00m
Deal found 8/29![Air China logo]()
$387
This Jeju Air deal was found by Cheapflights users on 8/27. 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 9/196:10 pm -
Nonstop5h 50m
Sun 10/411:00 pm -
Nonstop5h 30m
Deal found 8/27![Jeju Air logo]()
$373
This Jeju Air deal was found by Cheapflights users on 8/27. 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 11/207:15 pm -
Nonstop6h 30m
Sun 11/2212:45 am -
Nonstop4h 45m
Deal found 8/27![Jeju Air logo]()
$389
This FlightHub deal was found by Cheapflights users on 8/28. 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.
Sun 12/62:25 pm -
1 stop9h 25m
Fri 12/1111:05 pm -
1 stop12h 00m
Deal found 8/28![Air China logo]()
$451
This FlightHub deal was found by Cheapflights users on 8/25. 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.
Sat 12/192:25 pm -
1 stop9h 25m
Fri 1/811:05 pm -
1 stop12h 00m
Deal found 8/25![Air China logo]()
$521
This FlightHub deal was found by Cheapflights users on 8/29. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/182:25 pm -
1 stop9h 25m
Fri 1/2211:05 pm -
1 stop12h 00m
Deal found 8/29![Air China logo]()
$523
Last-minute flights from Seoul to Chiang MaiDiscover last-minute flight deals from Seoul to Chiang Mai. Data last updated August 29, 2026 and is based on user searches.
Discover last-minute flight deals from Seoul to Chiang Mai. Data last updated August 29, 2026 and is based on user searches.
This SmartFares deal was found by Cheapflights users on 8/25. 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.
Thu 9/32:25 pm -
1 stop9h 25m
Thu 10/111:05 pm -
1 stop12h 00m
Deal found 8/25![Air China logo]()
$551
This CheapOair deal was found by Cheapflights users on 8/26. 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.
Sat 9/57:55 pm -
Nonstop5h 55m
Sat 9/1211:55 pm -
Nonstop5h 15m
Deal found 8/26![Multiple Airlines logo]()
$197
This CheapOair deal was found by Cheapflights users on 8/27. 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.
Sat 9/56:30 pm -
Nonstop5h 40m
Sat 9/1211:55 pm -
Nonstop5h 15m
Deal found 8/27![Eastar Jet logo]()
$227
This EVA Air deal was found by Cheapflights users on 8/24. 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.
Sat 9/51:50 pm -
1 stop22h 35m
Tue 9/1511:35 am -
1 stop29h 40m
Deal found 8/24![EVA Air logo]()
$500
This EVA Air deal was found by Cheapflights users on 8/24. 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.
Sat 9/51:50 pm -
1 stop22h 35m
Mon 9/1411:35 am -
1 stop28h 35m
Deal found 8/24![EVA Air logo]()
$529
This Jeju Air deal was found by Cheapflights users on 8/28. 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 9/66:10 pm -
Nonstop5h 50m
Thu 9/1011:00 pm -
Nonstop5h 30m
Deal found 8/28![Jeju Air logo]()
$209
This CheapOair deal was found by Cheapflights users on 8/26. 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.
Sun 9/66:30 pm -
Nonstop6h 00m
Thu 9/1011:55 pm -
Nonstop5h 15m
Deal found 8/26![Eastar Jet logo]()
$222
This Jeju Air deal was found by Cheapflights users on 8/25. 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 9/96:10 pm -
Nonstop5h 50m
Wed 9/3011:00 pm -
Nonstop5h 30m
Deal found 8/25![Jeju Air logo]()
$186
This Eastar Jet deal was found by Cheapflights users on 8/24. 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.
Thu 9/106:30 pm -
Nonstop6h 00m
Thu 9/1711:55 pm -
Nonstop5h 15m
Deal found 8/24![Eastar Jet logo]()
$205
This Trip.com deal was found by Cheapflights users on 8/26. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/267:55 pm -
Nonstop5h 55m
Thu 10/112:50 am -
Nonstop5h 25m
Deal found 8/26![Air Busan logo]()
$217
This Eastar Jet deal was found by Cheapflights users on 8/27. 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 9/276:30 pm -
Nonstop6h 00m
Thu 10/111:55 pm -
Nonstop5h 15m
Deal found 8/27![Eastar Jet logo]()
$204
This Kiwi.com deal was found by Cheapflights users on 8/26. 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 9/296:10 pm -
Nonstop5h 50m
Wed 10/712:50 am -
Nonstop5h 25m
Deal found 8/26![Multiple Airlines logo]()
$214
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 August 29, 2026.
Search for one-way flight options from Seoul to Chiang Mai. Find affordable one-way fares based on user searches. Data last updated August 29, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/27. 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 9/96:10 pm -
Nonstop5h 50m
Deal found 8/27![Jeju Air logo]()
$84
This Jeju Air deal was found by Cheapflights users on 8/29. 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 Jeju Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/286:10 pm -
Nonstop5h 50m
Deal found 8/29![Jeju Air logo]()
$85
This CheapOair deal was found by Cheapflights users on 8/26. 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 10/65:20 pm -
Nonstop5h 25m
Deal found 8/26![Jin Air logo]()
$104
This OneTravel deal was found by Cheapflights users on 8/28. 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.
Tue 9/295:20 pm -
Nonstop5h 25m
Deal found 8/28![Jin Air logo]()
$106
This Kiwi.com deal was found by Cheapflights users on 8/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/286:00 pm -
1 stop15h 45m
Deal found 8/29![Multiple Airlines logo]()
$119
This Kiwi.com deal was found by Cheapflights users on 8/27. 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 9/96:00 pm -
1 stop15h 25m
Deal found 8/27![Multiple Airlines logo]()
$123
This Kiwi.com deal was found by Cheapflights users on 8/28. 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 9/296:00 pm -
1 stop17h 00m
Deal found 8/28![Multiple Airlines logo]()
$125
This Kiwi.com deal was found by Cheapflights users on 8/24. 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 9/86:00 pm -
1 stop15h 25m
Deal found 8/24![Multiple Airlines logo]()
$128
This Mytrip deal was found by Cheapflights users on 8/24. 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 9/85:20 pm -
Nonstop5h 25m
Deal found 8/24![Jin Air logo]()
$130
This Trip.com deal was found by Cheapflights users on 8/26. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/287:35 am -
1 stop27h 05m
Deal found 8/26![Multiple Airlines logo]()
$133
This Kiwi.com deal was found by Cheapflights users on 8/28. 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 10/297:15 pm -
Nonstop6h 30m
Deal found 8/28![Jeju Air logo]()
$134
This Kiwi.com deal was found by Cheapflights users on 8/28. 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 10/274:40 pm -
1 stop31h 20m
Deal found 8/28![Multiple Airlines logo]()
$150
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 August 29, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $186 (Jeju Air) |
One-way from | $84 (Kiwi.com) |
Popular in | January |
Cheapest in | September |
Average price | $305 |
Good round-trip deal | $224 or less |
Good one-way deal | $166 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 August 29, 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
IncheonChiang Mai
ICN Incheon Intl - CNX Chiang Mai
ICNCNX
Incheon Intl
Sun 9/20
6:10 pm-10:00 pm
Nonstop5h 50m
Chiang Mai
Thu 9/24
11:00 pm-6:30 am
Nonstop5h 30m
$186
Quickest round-trip
IncheonChiang Mai
ICN Incheon Intl - CNX Chiang Mai
ICNCNX
Incheon Intl
Sun 9/27
5:20 pm-8:45 pm
Nonstop5h 25m
Chiang Mai
Sun 10/11
9:45 pm-5:05 am
Nonstop5h 20m
$313
IncheonChiang Mai
ICN Incheon Intl - CNX Chiang Mai
ICNCNX
Incheon Intl
Sun 9/27
6:10 pm-10:00 pm
Nonstop5h 50m
Chiang Mai
Sun 10/11
11:00 pm-6:30 am
Nonstop5h 30m
$317
IncheonChiang Mai
ICN Incheon Intl - CNX Chiang Mai
ICNCNX
Incheon Intl
Fri 10/30
7:15 pm-11:45 pm
Nonstop6h 30m
Chiang Mai
Mon 11/2
12:45 am-7:30 am
Nonstop4h 45m
$326
IncheonChiang Mai
ICN Incheon Intl - CNX Chiang Mai
ICNCNX
Incheon Intl
Sun 1/24
12:10 am-11:25 am
1 stop13h 15m
Chiang Mai
Fri 1/29
12:25 pm-10:10 pm
1 stop31h 45m
$359
IncheonChiang Mai
ICN Incheon Intl - CNX Chiang Mai
ICNCNX
Incheon Intl
Sat 9/19
6:10 pm-10:00 pm
Nonstop5h 50m
Chiang Mai
Sun 10/4
11:00 pm-6:30 am
Nonstop5h 30m
$373
SeoulChiang Mai
GMP Seoul Gimpo Intl - CNX Chiang Mai
GMPCNX
Seoul Gimpo Intl
Sun 11/15
2:25 pm-9:50 pm
1 stop9h 25m
Chiang Mai
Fri 11/20
11:05 pm-1:05 pm
1 stop12h 00m
$381
SeoulChiang Mai
GMP Seoul Gimpo Intl - CNX Chiang Mai
GMPCNX
Seoul Gimpo Intl
Tue 11/10
2:25 pm-9:50 pm
1 stop9h 25m
Chiang Mai
Fri 11/20
11:05 pm-1:05 pm
1 stop12h 00m
$386
SeoulChiang Mai
GMP Seoul Gimpo Intl - CNX Chiang Mai
GMPCNX
Seoul Gimpo Intl
Tue 10/13
2:25 pm-9:50 pm
1 stop9h 25m
Chiang Mai
Tue 10/20
11:05 pm-1:05 pm
1 stop12h 00m
$387
IncheonChiang Mai
ICN Incheon Intl - CNX Chiang Mai
ICNCNX
Incheon Intl
Fri 11/20
7:15 pm-11:45 pm
Nonstop6h 30m
Chiang Mai
Sun 11/22
12:45 am-7:30 am
Nonstop4h 45m
$389
Showing 1-10 of 31 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
GMP-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
GMP-CNX
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 $236). Flying from Seoul to Chiang Mai in January is currently the most expensive (average of $386). 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 August 29, 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 typical for this route at the moment.
Seoul to Chiang Mai flights typically cost between $186 and $337 in September.The cheapest round-trip price found within the last 5 days was $186 on Jeju Air (Sep 9-Sep 30).
How far ahead should I book a flight from Seoul to Chiang Mai?
Booking 90 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 August 29, 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.
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Alternative routes for Seoul to Chiang Mai
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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 August 29, 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 August 29, 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 August 29, 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 August 29, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$112 | Average$466 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$191 | Average$300 | FlexibilityNo cancel fee | On-time86% | |
| Cheapest$224 | Average$357 | FlexibilityNo cancel fee | On-time78% | |
| Cheapest$372 | Average$619 | FlexibilityNo cancel fee | On-time81% |