AirHint found the following cheapest return flights from Phuket (HKT) to Seoul (ICN) in September 2025 (see full year).

Return flights

30 Sep - 13 Oct	Jin Air	direct
30 Sep - 11 Oct	Jin Air	direct
30 Sep - 10 Oct	Jin Air	direct
30 Sep - 12 Oct	Jin Air	direct
30 Sep - 09 Oct	Jin Air	direct
29 Sep - 13 Oct	AirAsia
29 Sep - 11 Oct	AirAsia
29 Sep - 10 Oct	AirAsia
29 Sep - 12 Oct	AirAsia
25 Sep - 13 Oct	AirAsia
18 Sep - 24 Sep	Thai VietJet Air
25 Sep - 28 Sep	AirAsia
20 Sep - 22 Sep	Thai AirAsia
20 Sep - 28 Sep	Thai AirAsia
20 Sep - 23 Sep	Thai AirAsia
25 Sep - 29 Sep	AirAsia
27 Sep - 29 Sep	AirAsia
23 Sep - 28 Sep	AirAsia
20 Sep - 26 Sep	Thai AirAsia
20 Sep - 29 Sep	Thai AirAsia

Also check the deals for one-way flights from Phuket to Seoul in September.

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.

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Cheapest return flights from Phuket to Seoul in September from 122€

Return flights