Direct (nonstop) flights from Seoul to Chiang Mai
5 airlines fly nonstop from Incheon International Airport (ICN) to Chiang Mai Intl (CNX). It's 2,100 miles (3,380 km), about 5h 50m in the air. Operated by Jeju Air, Air Busan, Korean Air and others.
Jeju Air
Air Busan
Korean Air
Jin Air
Eastar Jet
Route data last updated: May 27, 2026
Airlines with non-stop flights
Alternative Routes
Other ways to fly from Seoul to Chiang Mai with one stop · direct emits 355 kg CO₂ per passenger
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CNX → ICN: Flights from Chiang Mai to SeoulOther direct flights from Seoul
Direct flights from Chiang Mai (CNX)
Frequently Asked Questions
How long is the direct flight from Seoul to Chiang Mai?
A nonstop flight from Seoul (ICN) to Chiang Mai (CNX) takes approximately 5 hours and 50 minutes. The distance is 2,100 miles (3,380 km).
Which airlines fly nonstop from Seoul to Chiang Mai?
5 airlines: Jeju Air, Air Busan, Korean Air, Jin Air, Eastar Jet.
Is there a nonstop flight from Seoul to Chiang Mai?
Yes. 5 airlines: Jeju Air, Air Busan, Korean Air, Jin Air, Eastar Jet.
How far is Seoul from Chiang Mai?
The flight distance from Seoul to Chiang Mai is 2,100 miles (3,380 km), measured as the great-circle (shortest air) distance. That's roughly the same distance as New York to Los Angeles.
What is the time difference between Seoul and Chiang Mai?
Chiang Mai is 2 hours behind Seoul. (Asia/Seoul vs Asia/Bangkok.)
What type of aircraft flies from Seoul to Chiang Mai?
At 5h 50m, this route typically uses narrow-body or mid-range jets — Boeing 737 MAX or Airbus A320neo. Varies by airline.
Do I need a visa to travel from Republic of Korea to Thailand?
Depends on your passport. Check with the Thailand embassy or an official visa portal before booking — requirements change.
What is the carbon footprint of a flight from Seoul to Chiang Mai?
Roughly 355 kg CO2 per passenger one-way. That's about the same as driving 1,775 km.
Is the return flight from Chiang Mai to Seoul also nonstop?
Yes — nonstop flights run both ways. Flight time may differ slightly due to wind patterns.
When is the cheapest time to fly from Seoul to Chiang Mai?
Midweek flights (Tue/Wed) outside holiday peaks are usually cheapest. 3-6 weeks ahead is a good window for this route. Use "Check Prices" above to compare.
How early should I arrive at Incheon International Airport for this flight?
3 hours before departure for international flights. You need time for check-in, security, and immigration.