Flights by month
Seoul to Chiang Mai flights, month by month (2026)
A typical return fare from Seoul to Chiang Mai for each of 7 months, from departures we researched across a year. September is the cheapest, at around Rp5.314.321. Researched figures, not quotes: the partner shows what it costs today.
Typical return fare by month
Cheapest in Sep 2026, about Rp5.314.321
Jan 2027 costs about Rp3.736.038 more.
Researched fares: Rp4.625.552 to Rp11.583.008 per person over 73 checks, last on 2026-09-07. · Cheapest direct researched: Eastar Jet at Rp4.625.552.
From our own live checks: for each departure we sampled in the month, the cheapest return fare per person the newest check found, averaged. The same figures as the fare index, last checked 2026-09-06. Not a quote. What you pay depends on when you book. Departures from Sep 2026 to Mar 2027. How we work this out
Flying to Chiang Mai
- Fastest journey
- 8h 40m · 1 stop · Thai Airways + HK Express
- Cheapest itinerary
- 23h 0m · 2 stops · China Eastern + HK Express
- Usually flown by
- HK Express, China Eastern, Thai Airways, EVA Air
- Carbon, one way
- 335 kg CO₂
From the 50 fares we researched for a 2027-08-28 departure, checked 2026-09-07. Outbound journey times. Not a quote. How we work this out
Common questions
When is the cheapest month to fly from Seoul to Chiang Mai?
From what we captured across a year of departures, September is the cheapest month to fly Seoul to Chiang Mai, at around Rp5.314.321 return. That is a researched figure from a dated snapshot, not a live quote, so check the price with a partner before you book.
When is the most expensive month to fly from Seoul to Chiang Mai?
January is the dearest month we captured for Seoul to Chiang Mai, at around Rp9.050.359 return, about Rp3.736.038 more than the cheapest month.
How long is the flight from Seoul to Chiang Mai?
About 8h 40m with 1 stop, from the itineraries we captured for Seoul to Chiang Mai.
Which airlines fly from Seoul to Chiang Mai?
The fares we captured for Seoul to Chiang Mai were on Hong Kong Express, Thai Vietjet Air, THAI, Thai AirAsia, among others.