The cheapest times to fly from ICN to CNX are

  • February 5th to March 25th
  • May 14th to July 15th (except the week of July 2nd)
  • August 20th to November 4th (except the weeks of September 3rd and October 1st)

based on data collected exclusively by Champion Traveler across tens of millions of flights. Among all the dates above, the very cheapest time to fly from ICN to CNX is early to mid February. Prices can be as high as $501 for Saturday flights during mid December, or as low as $234 for Tuesday flights around early to mid February.


When to Fly to Chiang Mai

Flying from Seoul (ICN) to Chiang Mai (CNX) will usually cost between $240 to $409 per person if booking more than four weeks in advance. On average the very cheapest time to fly is early to mid February with an average ticket price of $239. Due to high demand the most expensive time to fly is mid December, with an average price of $409. Planning your trip to low-cost times can easily save you $170 on economy flights and even more on first-class flights. Generally, any price below $265 can be considered a good price for a round-trip ICN to CNX flight.

See below for a graph of average weekly prices for the ICN to CNX route. All prices are for round-trip tickets in USD.

ICN to CNX Flight Prices

Compared to other flights, the ICN to CNX flight is much cheaper than the average and costs much less than the average flight leaving from Seoul. The average price per mile (for a direct flight) is $0.08, which is far below average.


Flight Prices by Day of the Week

Tuesday is usually the cheapest day to depart and return on this flight. Saturdays are the most expensive days to fly to Chiang Mai, and Fridays are the most expensive days to return to Seoul. Selecting flights on the least expensive days could save you up to $29 (9%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Tuesday and returning a week later will cost an average of $279. Return trip prices are from the CNX to ICN flight, and often highlight the quality of our data in showing the same trend.

Departing Prices by Day

Departure Day Prices

Return Trip Prices by Day

Return Day Prices


Nonstop Flights and Layovers

Travelers looking to fly from ICN to CNX can generally find a 0-layover flight. Because there is a direct flight option the real-world direct flight time of 4 hour 46 minutes may be realistic.


Flight Questions Answered

Still have questions about flying from ICN to CNX? We’ve got answers.

Which airlines fly this route?

You can find 38 major airlines flying this route most often: Air Astana, Air China, Air Macau, ANA, Asiana, Bangkok Airways, Cathay Dragon, Cathay Pacific, China Airlines, China Eastern, China Southern, EASTAR JET, EVA Air, Hainan, Hong Kong Airlines, Hong Kong Express, JAL, Jeju Air, Jin Air, Korean Air, Lao Airlines, Nok Air, Scoot, Shandong, Shenzhen, Sichuan Airlines, Singapore Airlines, Spring, T’Way Air, THAI, Thai AirAsia, Thai AirAsia X, Thai Lion Mentari, Thai Smile, Thai Vietjet Air, VietJet Air, Vietnam Airlines, Virgin Australia, and potentially more during busy seasons.

How far away is it from Chiang Mai International Airport to Incheon International Airport?

The distance between the two airports is roughly 2101 miles or 3381 kilometers.

How long does it take to fly from ICN to CNX?

The real-world flight time for a nonstop ICN to CNX flight is about 4 hour 46 minutes.

How many flights go between Seoul and Chiang Mai?

It depends on the day of the week and the date, but a typical day might have around 86 available flights from ICN to CNX.


Airport Location Info


Departing Airport

Origination codeICN
Origination airport nameIncheon International Airport
CountrySouth Korea

Return Airport

Destination codeCNX
Destination airport nameChiang Mai International Airport
CityChiang Mai


Other Resources

Please note that while we’ve worked hard to analyzed tens of millions of flights to get you this data, we do not calculate current live prices or guarantee pricing. Please see our partners using the links above for current offers.