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Search round tripsInternational route ICN to CNX
Cheap flights from Seoul to Chiang Mai
A number of airlines fly nonstop from Seoul to Chiang Mai. The 3,381 km flight takes about 4 hours 45 minutes.
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Nonstop, several airlinesEconomy
ICN
Seoul
CNX
Chiang Mai
- Distance
- 3,381 km
Return
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Looking for Seoul to Chiang Mai air tickets and not sure what to pay? Four airlines fly this route, and fares change with demand, so the same seat can cost noticeably more close to a holiday weekend. Put your dates in the search above to compare today's fares and book with bookingMentor.
Everything you should know
Seoul to Chiang Mai flight guide
Flying from Seoul to Chiang Mai
In short
Korean Air, Jeju Air and Eastar Jet fly nonstop from Incheon International Airport (ICN) in Seoul to Chiang Mai International Airport (CNX) in northern Thailand. The 3,381 km flight takes about 4 hours 45 minutes. It is a favourite winter escape for Koreans and Air Busan adds a seasonal link from Busan.
What Korean Air includes that budget fares do not
Korean Air includes checked baggage and meals in its fares. Jeju Air, Eastar Jet and Air Busan are low-cost carriers whose basic fares cover only a cabin bag, with everything else sold as an extra, so compare totals before booking.
Air Busan's flights leave from Busan, not Seoul. From 25 October 2026, flight BX537 departs Busan at 19:00 and arrives in Chiang Mai at 22:40, on an Airbus A321, four times a week and six times a week from 15 December 2026 to 28 February 2027. Air Busan last flew the route in 2023. T'way Air also ran a daily Incheon to Chiang Mai service with a Boeing 737-800 from 10 December 2025 to 2 March 2026, so check which low-cost carriers are flying in your season.
Check Terminal 1 or 2 before heading to Incheon
Korean Air uses Terminal 2 and most other airlines Terminal 1. The two are far apart, so check your booking before taking the AREX train or a limousine bus to the airport. The AREX express from Seoul Station takes under an hour.
Evening landings at Chiang Mai immigration
Many flights from Korea land in the evening or late at night. Immigration is in the international hall; entry rules for Thailand depend on nationality, and every foreign visitor completes the Thailand Digital Arrival Card within 72 hours before landing (see our Thailand visa page). Thailand's visa-free tourist stay is now 30 days for 60 countries and territories, replacing the 60-day exemption that ended on 15 September 2026.
The airport is just south-west of the old city. AOT lists shuttle vans from Gate 12 of the international terminal at flat fares: 40 baht on route A1 to Nimmanhaemin, Huay Kaew and the moat, 40 baht on route A2 to Mahidol Road, the Night Bazaar and Chang Khlan Road, and 60 baht on route A3 to Ring Road 2. The yellow and red city bus lines stop at 23:30, so late arrivals should take a taxi or Grab, around 15 to 20 minutes to most hotels. Many hotels also offer airport pickup. Car rental desks are on the first floor.
Peak months for Korean visitors
November to February is Chiang Mai's cool, dry season, with warm days and evenings that can drop to about 10°C, and it is when most Korean visitors come; Air Busan raises its frequency for that period. April is hot, up to about 40°C, and the rainy season runs roughly from June to October.
Set your watch back two hours on landing (Korea is UTC+9, Thailand UTC+7). For onward trips, Chiang Mai has frequent domestic flights to Bangkok, where you can connect across Asia, for example to South Asia from Suvarnabhumi (see Bangkok to Dhaka flights).
Fact-checked by the bookingMentor Travel Desk
Reviewed · Updated when rules or prices change
Checked against trusted sources:
AeroRoutes, 21 July 2026AeroRoutes, 10 December 2025Chiang Mai International Airport
Seoul to Chiang Mai flights at a glance
A number of airlines fly nonstop from Seoul (ICN) to Chiang Mai (CNX). The 3,381 km flight takes about 4 hours 45 minutes.
| Flight time | 4h 45m nonstop |
|---|---|
| Distance | 3,381 km |
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Airlines flying Seoul to Chiang Mai
Full-service and low-cost airlines both fly the route, so compare what each fare includes.
Air Busan flies the route seasonally.
Departure and arrival airports
ICN Incheon International Airport
- Codes
- IATA ICN
- City
- Seoul, South Korea
- Getting into town
- Incheon International Airport is on an island west of Seoul. The AREX express train reaches Seoul Station in under an hour; Korean Air and its partners use Terminal 2 and most other airlines Terminal 1.
- Time zone
- UTC+9
CNX Chiang Mai International Airport
- Codes
- IATA CNX
- City
- Chiang Mai, Thailand
- Terminal
- One passenger building with international and domestic halls.
- Time zone
- UTC+7, no daylight saving
- Getting into town
- Chiang Mai International Airport sits just south-west of the old city, one of the shortest airport runs in Asia: a taxi or Grab reaches most old-city and Nimman hotels in 15 to 20 minutes.
How to book Seoul to Chiang Mai for less
Practical points for booking this route.
Low-costbags are extra
Add bags when you book
Air Busan, Eastar Jet and Jeju Air charge for checked baggage. It is cheaper added online at booking than at the airport.
4airlines on the route
Compare the total, not the headline fare
Put your dates into the search above and compare the price with baggage, seats and meals included, not just the base fare.
e-Visafor Bangladeshi passports
Apply for the Thai e-Visa early
Apply for the Thai e-Visa online well before you fly and fill in the Thailand Digital Arrival Card in the 72 hours before landing; airlines check both at check-in.
Where to stay in Chiang Mai
Hotels and resorts in Chiang Mai with guest scores, nightly prices and free cancellation.
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Frequently Asked Questions (FAQs)
Getting there
Korean Air, Jeju Air and Eastar Jet fly from Incheon. Air Busan flies to Chiang Mai from Busan in winter 2026/27, and T'way Air flew from Incheon in the 2025/26 winter.
About 4 hours 45 minutes in the air. The two airports are 3,381 km apart in a straight line; actual times vary a little by airline, aircraft and wind.
One passenger building with international and domestic halls. International flights such as this one use the international side, so allow time for immigration on arrival.
Chiang Mai International Airport sits just south-west of the old city, one of the shortest airport runs in Asia: a taxi or Grab reaches most old-city and Nimman hotels in 15 to 20 minutes.
Yes. Air Busan flies Busan to Chiang Mai from 25 October 2026, rising to six a week from 15 December 2026 to 28 February 2027.
General
The clock moves two hours back on landing in Thailand (Thailand is UTC+7). Neither side uses daylight saving, so the gap stays the same all year.
Take a domestic flight to Bangkok and connect there. If you land at Don Mueang and depart from Suvarnabhumi, allow time to cross the city.
The AREX express train runs nonstop to Seoul Station, and the all-stop train is cheaper but slower. Airport limousine buses serve most districts.
BX537 leaves Busan at 19:00 and arrives in Chiang Mai at 22:40 in the winter 2026/27 schedule.
What's included
It depends on the airline. Air Busan, Eastar Jet and Jeju Air are low-cost carriers whose basic fares include only a cabin bag, so add checked baggage when you book. The full-service airlines normally include a checked bag; the allowance is shown on your booking.
Visa & documents
That depends on your passport. Check our Thailand visa page and the Thai immigration website, and complete the Thailand Digital Arrival Card within 72 hours before landing.
Stay & facilities
On the full-service airlines, request a Muslim (halal) meal when you book or at least 24 hours before departure through the airline's manage-booking page. On Air Busan, Eastar Jet and Jeju Air, meals are bought online or on board; check the menu for halal options.
