$88+ 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 10/10. Fares are subject to change and may not be available on all flights or dates of travel.
SEL — CNX
Oct 11 — Oct 181
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 36 days in advance, depart on a Tuesday or Saturday 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 September 11, 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 September 11, 2026.
This Jeju Air deal was found by Cheapflights users on 9/8. 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 9/126:10 pm -
Nonstop5h 50m
Fri 9/2511:00 pm -
Nonstop5h 30m
Deal found 9/8![Jeju Air logo]()
$212
This Jeju Air deal was found by Cheapflights users on 9/7. 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 9/176:10 pm -
Nonstop5h 50m
Wed 9/3011:00 pm -
Nonstop5h 30m
Deal found 9/7![Jeju Air logo]()
$213
This Booking.com deal was found by Cheapflights users on 9/8. 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 10/106:10 pm -
Nonstop5h 50m
Wed 10/2812:10 am -
Nonstop5h 00m
Deal found 9/8![Multiple Airlines logo]()
$216
This Jeju Air deal was found by Cheapflights users on 9/11. 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 9/136:10 pm -
Nonstop5h 50m
Thu 9/1711:00 pm -
Nonstop5h 30m
Deal found 9/11![Jeju Air logo]()
$217
This Jeju Air deal was found by Cheapflights users on 9/8. 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
Sat 9/1211:00 pm -
Nonstop5h 30m
Deal found 9/8![Jeju Air logo]()
$218
This Jeju Air deal was found by Cheapflights users on 9/8. 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
Sun 9/1311:00 pm -
Nonstop5h 30m
Deal found 9/8![Jeju Air logo]()
$219
This Jeju Air deal was found by Cheapflights users on 9/9. 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
Sat 10/311:00 pm -
Nonstop5h 30m
Deal found 9/9![Jeju Air logo]()
$223
This Jeju Air deal was found by Cheapflights users on 9/10. 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 10/66:10 pm -
Nonstop5h 50m
Wed 10/711:00 pm -
Nonstop5h 30m
Deal found 9/10![Jeju Air logo]()
$226
This Jeju Air deal was found by Cheapflights users on 9/11. 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 9/136:10 pm -
Nonstop5h 50m
Fri 9/2511:00 pm -
Nonstop5h 30m
Deal found 9/11![Jeju Air logo]()
$231
This Eastar Jet deal was found by Cheapflights users on 9/11. 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 9/266:30 pm -
Nonstop5h 40m
Mon 10/269:50 pm -
Nonstop5h 40m
Deal found 9/11![Eastar Jet logo]()
$238
This Eastar Jet deal was found by Cheapflights users on 9/10. 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 9/176:30 pm -
Nonstop6h 00m
Wed 9/3011:55 pm -
Nonstop5h 15m
Deal found 9/10![Eastar Jet logo]()
$239
This FlightHub deal was found by Cheapflights users on 9/7. 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 9/7![Air China logo]()
$384
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 September 11, 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 September 11, 2026.
This Jeju Air deal was found by Cheapflights users on 9/10. 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 10/66:10 pm -
Nonstop5h 50m
Wed 10/711:00 pm -
Nonstop5h 30m
Deal found 9/10![Jeju Air logo]()
$226
This Jin Air deal was found by Cheapflights users on 9/11. 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.
Wed 11/114:45 pm -
Nonstop5h 55m
Wed 11/189:40 pm -
Nonstop5h 05m
Deal found 9/11![Jin Air logo]()
$368
This SmartFares deal was found by Cheapflights users on 9/10. 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 11/262:25 pm -
1 stop9h 25m
Sun 11/2911:05 pm -
1 stop12h 00m
Deal found 9/10![Air China logo]()
$393
This AirAsia deal was found by Cheapflights users on 9/9. 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.
Wed 10/2112:05 pm -
1 stop9h 25m
Tue 2/168:30 pm -
1 stop11h 35m
Deal found 9/9![Thai AirAsia logo]()
$447
This Singapore Airlines deal was found by Cheapflights users on 9/8. 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 Singapore Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/1512:35 pm -
1 stop24h 30m
Fri 2/1912:05 pm -
1 stop25h 35m
Deal found 9/8![Singapore Airlines logo]()
$474
This Jeju Air deal was found by Cheapflights users on 9/9. 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 10/106:10 pm -
Nonstop5h 50m
Sun 10/2512:45 am -
Nonstop4h 45m
Deal found 9/9![Jeju Air logo]()
$246
This Malaysia Airlines deal was found by Cheapflights users on 9/7. 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.
Mon 2/1511:05 am -
1 stop28h 45m
Fri 2/1912:25 pm -
1 stop31h 45m
Deal found 9/7![Malaysia Airlines logo]()
$501
This Cathay Pacific deal was found by Cheapflights users on 9/7. 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/221:55 am -
1 stop9h 50m
Sun 9/2710:30 am -
1 stop24h 10m
Deal found 9/7![Cathay Pacific logo]()
$569
This Jeju Air deal was found by Cheapflights users on 9/7. 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 9/7![Jeju Air logo]()
$398
This FlightHub deal was found by Cheapflights users on 9/9. 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 9/9![Air China logo]()
$459
This AirAsia deal was found by Cheapflights users on 9/10. 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.
Tue 1/511:20 am -
1 stop9h 45m
Wed 1/2010:10 pm -
1 stop9h 55m
Deal found 9/10![Thai AirAsia logo]()
$513
This Jin Air deal was found by Cheapflights users on 9/10. 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.
Wed 9/235:20 pm -
Nonstop5h 25m
Mon 9/289:45 pm -
Nonstop5h 20m
Deal found 9/10![Jin Air logo]()
$545
This Justfly.com deal was found by Cheapflights users on 9/7. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/102:25 pm -
1 stop9h 25m
Sat 1/2311:05 pm -
1 stop12h 00m
Deal found 9/7![Air China logo]()
$529
This Justfly.com deal was found by Cheapflights users on 9/7. 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 Justfly.com 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 9/7![Air China logo]()
$529
This FlightHub deal was found by Cheapflights users on 9/7. 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.
Wed 12/302:25 pm -
1 stop9h 25m
Mon 1/411:05 pm -
1 stop12h 00m
Deal found 9/7![Air China logo]()
$578
This Air China deal was found by Cheapflights users on 9/8. 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 Air China is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/152:25 pm -
1 stop9h 25m
Sun 1/311:05 pm -
1 stop12h 00m
Deal found 9/8![Air China logo]()
$580
This FlightHub deal was found by Cheapflights users on 9/9. 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.
Wed 12/302:25 pm -
1 stop9h 25m
Tue 1/511:05 pm -
1 stop12h 00m
Deal found 9/9![Air China logo]()
$581
Last-minute flights from Seoul to Chiang MaiDiscover last-minute flight deals from Seoul to Chiang Mai. Data last updated September 11, 2026 and is based on user searches.
Discover last-minute flight deals from Seoul to Chiang Mai. Data last updated September 11, 2026 and is based on user searches.
This Jeju Air deal was found by Cheapflights users on 9/8. 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 9/126:10 pm -
Nonstop5h 50m
Fri 9/2511:00 pm -
Nonstop5h 30m
Deal found 9/8![Jeju Air logo]()
$212
This Jeju Air deal was found by Cheapflights users on 9/7. 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 9/126:10 pm -
Nonstop5h 50m
Wed 9/1611:00 pm -
Nonstop5h 30m
Deal found 9/7![Jeju Air logo]()
$219
This Jeju Air deal was found by Cheapflights users on 9/11. 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 9/136:10 pm -
Nonstop5h 50m
Thu 9/1711:00 pm -
Nonstop5h 30m
Deal found 9/11![Jeju Air logo]()
$217
This Jeju Air deal was found by Cheapflights users on 9/11. 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 9/136:10 pm -
Nonstop5h 50m
Fri 9/2511:00 pm -
Nonstop5h 30m
Deal found 9/11![Jeju Air logo]()
$231
This Jeju Air deal was found by Cheapflights users on 9/7. 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 9/176:10 pm -
Nonstop5h 50m
Wed 9/3011:00 pm -
Nonstop5h 30m
Deal found 9/7![Jeju Air logo]()
$213
This Eastar Jet deal was found by Cheapflights users on 9/10. 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 9/176:30 pm -
Nonstop6h 00m
Wed 9/3011:55 pm -
Nonstop5h 15m
Deal found 9/10![Eastar Jet logo]()
$239
This Eastar Jet deal was found by Cheapflights users on 9/11. 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 9/266:30 pm -
Nonstop5h 40m
Mon 10/269:50 pm -
Nonstop5h 40m
Deal found 9/11![Eastar Jet logo]()
$238
This Jeju Air deal was found by Cheapflights users on 9/9. 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
Sat 10/311:00 pm -
Nonstop5h 30m
Deal found 9/9![Jeju Air logo]()
$223
This Jeju Air deal was found by Cheapflights users on 9/10. 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 10/66:10 pm -
Nonstop5h 50m
Wed 10/711:00 pm -
Nonstop5h 30m
Deal found 9/10![Jeju Air logo]()
$226
This Booking.com deal was found by Cheapflights users on 9/8. 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 10/106:10 pm -
Nonstop5h 50m
Wed 10/2812:10 am -
Nonstop5h 00m
Deal found 9/8![Multiple Airlines logo]()
$216
This Jeju Air deal was found by Cheapflights users on 9/9. 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 10/106:10 pm -
Nonstop5h 50m
Sun 10/2512:45 am -
Nonstop4h 45m
Deal found 9/9![Jeju Air logo]()
$246
This SmartFares deal was found by Cheapflights users on 9/7. 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 10/222:25 pm -
1 stop9h 25m
Tue 10/2711:05 pm -
1 stop12h 00m
Deal found 9/7![Air China logo]()
$390
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 September 11, 2026.
Search for one-way flight options from Seoul to Chiang Mai. Find affordable one-way fares based on user searches. Data last updated September 11, 2026.
This Booking.com deal was found by Cheapflights users on 9/10. 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 10/106:10 pm -
Nonstop5h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Jeju Air logo]()
$88
This Jeju Air deal was found by Cheapflights users on 9/7. 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
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![Jeju Air logo]()
$93
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 9/177:55 pm -
Nonstop5h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Air Busan logo]()
$111
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 9/166:30 pm -
Nonstop5h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Eastar Jet logo]()
$112
This CheapOair deal was found by Cheapflights users on 9/10. 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.
Wed 10/146:30 pm -
Nonstop5h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Eastar Jet logo]()
$113
This Eastar Jet deal was found by Cheapflights users on 9/10. 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.
Tue 11/105:25 pm -
Nonstop5h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Eastar Jet logo]()
$126
This Super.com deal was found by Cheapflights users on 9/9. 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.
Tue 11/175:25 pm -
Nonstop5h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Eastar Jet logo]()
$128
This CheapOair deal was found by Cheapflights users on 9/9. 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.
Wed 11/185:25 pm -
Nonstop5h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Eastar Jet logo]()
$130
This oojo deal was found by Cheapflights users on 9/7. 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.
Wed 9/166:10 pm -
Nonstop5h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![Hahn Air Systems logo]()
$137
This ThaiVietJet deal was found by Cheapflights users on 9/8. 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 ThaiVietJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/298:05 pm -
1 stop14h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Multiple Airlines logo]()
$143
This Kiwi.com deal was found by Cheapflights users on 9/11. 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 12/1610:40 am -
1 stop13h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/11![Multiple Airlines logo]()
$186
This Trip.com deal was found by Cheapflights users on 9/11. 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.
Thu 11/269:45 am -
1 stop14h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/11![Multiple Airlines logo]()
$209
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 September 11, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $216 (Booking.com) |
One-way from | $88 (Booking.com) |
Popular in | January |
Cheapest in | September |
Average price | $228 |
Good round-trip deal | $240 or less |
Good one-way deal | $155 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 September 11, 2026.
Use the filters below to find and compare flights from Seoul to Chiang Mai that are best for you.
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Quickest round-trip
IncheonChiang Mai
ICN Incheon Intl - CNX Chiang Mai
ICNCNX
Incheon Intl
Mon 9/28
6:10 pm-10:00 pm
Nonstop5h 50m
Chiang Mai
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$93
IncheonChiang Mai
ICN Incheon Intl - CNX Chiang Mai
ICNCNX
Incheon Intl
Thu 11/19
7:15 pm-11:45 pm
Nonstop6h 30m
Chiang Mai
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$153
IncheonChiang Mai
ICN Incheon Intl - CNX Chiang Mai
ICNCNX
Incheon Intl
Wed 10/7
12:10 pm-9:50 pm
1 stop11h 40m
Chiang Mai
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$175
IncheonChiang Mai
ICN Incheon Intl - CNX Chiang Mai
ICNCNX
Incheon Intl
Thu 9/17
12:10 am-1:20 pm
2 stops39h 10m
Chiang Mai
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$180
SeoulChiang Mai
GMP Seoul Gimpo Intl - CNX Chiang Mai
GMPCNX
Seoul Gimpo Intl
Wed 12/16
10:40 am-10:00 pm
1 stop13h 20m
Chiang Mai
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$186
IncheonChiang Mai
ICN Incheon Intl - CNX Chiang Mai
ICNCNX
Incheon Intl
Wed 12/16
7:15 pm-11:45 pm
Nonstop6h 30m
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
Tue 12/22
12:00 pm-9:05 am
2 stops23h 05m
Chiang Mai
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$189
IncheonChiang Mai
ICN Incheon Intl - CNX Chiang Mai
ICNCNX
Incheon Intl
Mon 10/19
12:10 pm-9:50 pm
1 stop11h 40m
Chiang Mai
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$191
IncheonChiang Mai
ICN Incheon Intl - CNX Chiang Mai
ICNCNX
Incheon Intl
Sat 10/31
12:10 pm-10:20 pm
1 stop12h 10m
Chiang Mai
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$191
IncheonChiang Mai
ICN Incheon Intl - CNX Chiang Mai
ICNCNX
Incheon Intl
Tue 3/2
9:15 pm-3:30 pm
1 stop20h 15m
Chiang Mai
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$193
Showing 1-10 of 37 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, 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 $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 September 11, 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.
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 11, 2026.
The most flights from SEL to CNX are scheduled on a Thursday (5 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (2 on average).
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 $182 and $353 in October.The cheapest round-trip price found within the last 5 days was $216 on Multiple Airlines (Oct 10-Oct 28).
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 September 11, 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
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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 September 11, 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 September 11, 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 September 11, 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 September 11, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$139 | Average$481 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$191 | Average$339 | FlexibilityNo cancel fee | On-time86% | |
| Cheapest$224 | Average$323 | FlexibilityNo cancel fee | On-time78% | |
| Cheapest$386 | Average$619 | FlexibilityNo cancel fee | On-time81% |