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Search round tripsInternational route CNX to ICN
Cheap flights from Chiang Mai to Seoul
Several airlines fly nonstop from Chiang Mai to Seoul. The 3,381 km flight takes about 4 hours 45 minutes.
Fares
Fares are pulled from the airlines and our partners when you search. Search your dates
Nonstop, several airlinesEconomy
CNX
Chiang Mai
ICN
Seoul
- Distance
- 3,381 km
Return
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Looking for Chiang Mai to Seoul 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
Chiang Mai to Seoul flight guide
Flying from Chiang Mai to Seoul
In short
Korean Air, Jeju Air and Eastar Jet fly nonstop from Chiang Mai International Airport (CNX) in northern Thailand to Incheon International Airport (ICN), Seoul's main airport, and Air Busan also serves Chiang Mai from Korea in winter. The 3,381 km flight takes about 4 hours 45 minutes and is popular with Korean holidaymakers and long-stay visitors returning home.
Korean Air against Jeju Air, Eastar Jet and Air Busan
Fares are not like for like. Korean Air is a full-service airline and includes a checked bag and meals. Jeju Air, Eastar Jet and Air Busan are low-cost airlines whose basic fares cover a cabin bag only, with bags, seats and food as extras, so compare the total price.
Check where the Air Busan flight goes. Its winter 2026/27 Chiang Mai service, starting 25 October 2026, runs to Busan, not Seoul: flight BX538 leaves Chiang Mai at 23:40 and reaches Busan at 07:00 the next morning, on an Airbus A321. It flies four times a week, rising to six a week between 15 December 2026 and 28 February 2027. That suits travellers from the south-east of Korea who would otherwise connect through Incheon. T'way Air has also flown Seoul Incheon to Chiang Mai in recent winters, running daily with a Boeing 737-800 from 10 December 2025 to 2 March 2026, so the line-up of low-cost carriers changes from season to season.
Taxi or Grab after the 23:30 last bus
Many Korea-bound flights leave Chiang Mai late in the evening and arrive early the next morning. The city bus stops at 23:30, so for a late departure book a taxi or Grab; most old-city and Nimman hotels are 15 to 20 minutes away. AOT, which runs Chiang Mai airport, lists flat-fare shuttle vans using Gate 12 of the international terminal: 40 baht on route A1 (Nimmanhaemin, Huay Kaew and the moat), 40 baht on route A2 (Mahidol Road, the Night Bazaar and Chang Khlan Road) and 60 baht on route A3 (Ring Road 2). The yellow and red lines of the Chiang Mai City Bus run from 06:00 to 23:30. AOT asks passengers to arrive at least two hours before departure, and international check-in closes well before take-off.
Incheon terminals, AREX and limousine buses
Incheon International Airport is on an island west of Seoul. Korean Air and its partners use Terminal 2, and most other airlines use Terminal 1. The AREX express train reaches Seoul Station in under an hour, the all-stop train is cheaper but slower, and limousine buses serve most districts.
Some visitors who can enter Korea without a visa need a K-ETA travel authorisation before boarding. Apply only on the official K-ETA website or app; the fee is KRW 10,000 and decisions generally come within 72 hours. Check whether your passport needs one, or whether it is covered by a temporary exemption.
Korean winter and Air Busan's extra flights
Chiang Mai's cool season, November to February, overlaps with the Korean winter and is the busiest period on the route; Air Busan's added frequencies fall in exactly those months. Chiang Mai evenings can drop to about 10°C then. April is hot, up to about 40°C, and the rains run roughly from June to October.
Korea is two hours ahead of Thailand all year (UTC+9 against UTC+7). Travellers from elsewhere usually reach Chiang Mai via Bangkok; see our Dhaka to Bangkok flights page for one example of a connection.
Fact-checked by the bookingMentor Travel Desk
Reviewed · Updated when rules or prices change
Checked against trusted sources:
AeroRoutes, 21 July 2026AeroRoutes, 10 December 2025K-ETA official site
Chiang Mai to Seoul flights at a glance
Various airlines fly nonstop from Chiang Mai (CNX) to Seoul (ICN). 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 Chiang Mai to Seoul
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
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
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
How to book Chiang Mai to Seoul 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.
Visacheck before booking
Have your documents ready
Entry rules for Bangladeshi passports change from time to time, so confirm them with the Korean embassy or the official visa site before you book.
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Frequently Asked Questions (FAQs)
Getting there
Korean Air, Jeju Air and Eastar Jet fly to Seoul Incheon. Air Busan's winter 2026/27 Chiang Mai flights go to Busan, and T'way Air has flown to Incheon in past winters. Check your dates in the search.
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 before boarding.
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.
Most international travellers reach Chiang Mai via Bangkok, then take a domestic flight north.
Korean Air and its SkyTeam partners use Terminal 2; most other airlines use Terminal 1. Check your ticket, as the terminals are far apart.
General
The clock moves two hours forward from Thai time (Thailand is UTC+7). Neither side uses daylight saving, so the gap stays the same all year.
Some visa-exempt nationalities need a K-ETA before boarding. Apply on the official K-ETA website or app; the fee is KRW 10,000 and decisions generally come within 72 hours.
The AREX express train runs nonstop to Seoul Station, and the all-stop train is cheaper but slower. Airport limousine buses serve most districts.
Its winter 2026/27 Chiang Mai service goes to Busan. BX538 leaves Chiang Mai at 23:40 and lands in Busan at 07:00 the next day.
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.
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.
