Cheapest return flights from Seoul to Chiang Mai in May from $401

AirHint found the following cheapest return flights from Seoul (GMP) to Chiang Mai (CNX) in May 2026 (see full year).

Return flights

23 May - 28 May Jeju Air
13 May - 19 May EVA Air
09 May - 19 May EVA Air
23 May - 30 May Air China
12 May - 19 May Air China
23 May - 26 May Air China
23 May - 25 May Air China
18 May - 25 May Air China
11 May - 14 May Air China
14 May - 18 May Air China
28 May - 01 Jun Air China
28 May - 11 Jun Air China
21 May - 04 Jun Air China
21 May - 01 Jun Air China
30 May - 01 Jun Air China
30 May - 06 Jun Air China
23 May - 02 Jun Air China
30 May - 02 Jun EVA Air
29 May - 02 Jun EVA Air
02 May - 01 Jun Air China

Also check the deals for one-way flights from Seoul to Chiang Mai in May.

Powered by

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

Book a cheap hotel in Chiang Mai

Cheap car rent in Chiang Mai

Feel free to contact us with any feedback or request another flight research.