Cheap flights from Seoul to Chiang Mai from $140

If you don’t want to visit Chiang Mai in March, then you should wait until September to fly from Seoul, when ticket prices are also cheap, with an average price of $259.

The cheapest day to depart from Seoul to Chiang Mai is on a Tuesday. Travelers who choose to depart for Chiang Mai on a Tuesday will often find tickets for as low as $297. When flying out on a Monday, the most expensive travel day of the week, you can expect to see flight prices from Seoul to Chiang Mai for around $403.

Flying to Chiang Mai from Seoul in the evening is the least expensive time of day to depart. momondo users have found prices as low as $310 when looking at flights departing in the evening. Flights to Chiang Mai are more costly in the afternoon, with an average ticket price of $373. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

Fly from Incheon Intl to Chiang Mai for the best Seoul - Chiang Mai flight prices

You are more likely to see cheaper flights to Chiang Mai from Seoul when booking weeks ahead of your departure date. In general, you can expect to find flights to Chiang Mai for around $312 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Chiang Mai from Seoul for as low as $264 on momondo.

There are 2 cabin classes available to choose from on Seoul to Chiang Mai flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

You could potentially save up to 24% on your flight if you consider stops on a Seoul to Chiang Mai flight.

As of October 2026, prices for Seoul to Chiang Mai flights are approximately 2% more expensive when compared to flights at the same time last year.

Jeju Air and Hahn Air Systems are the most popular carriers operating from Seoul to Chiang Mai

Jin Air, Jeju Air and Eastar Jet are the top three most popular airlines that fly to Chiang Mai from Seoul according to our data. Jin Air is the first choice among our users, with 62% of people opting to fly with this airline when traveling to Chiang Mai. Keep in mind that there are 3 different airlines that fly to Chiang Mai on a routine basis, so you have a few additional options to choose from.

Shanghai (PVG) was the most common stop: 50% of momondo users choosing 1-stop flights on this route connected there.

Flights via Shanghai (PVG) offer the lowest average round-trip price of $725.

Flights connecting via Shanghai (PVG) have the shortest average one-way travel time: 9h 00m.

Kunming (KMG) has the shortest average layover time for this route: 2h 33m.

As of October 2026, 6 flights take off from Seoul and land in Chiang Mai each day. The most common flight departure time for this route is 5:00PM, with 50% of daily flights taking off in the afternoon.

42 flights are operational weekly from Seoul to Chiang Mai as of October 2026. The most popular departure day for this route is Thu, with 17% of flights per week taking off on this day.