Cheapest return SIN–ICN flights, May

AirHint found the following cheapest return flights from Singapore (SIN) to Seoul (ICN) in May 2026 (see full year).

Return flights

18 May - 27 May Jeju Air direct
18 May - 24 May Jeju Air direct
18 May - 25 May Jeju Air
18 May - 20 May Jeju Air direct
18 May - 21 May Jeju Air direct
31 May - 04 Jun Jeju Air direct
17 May - 25 May T'way Air direct
17 May - 24 May Jeju Air direct
17 May - 20 May T'way Air direct
18 May - 25 May Jeju Air direct
17 May - 21 May Jeju Air direct
31 May - 05 Jun Jeju Air
23 May - 10 Jun VietJet Air
18 May - 05 Jun T'way Air direct
20 May - 03 Jun Scoot
28 May - 02 Jun China Eastern
15 May - 11 Jun Jeju Air direct
17 May - 30 Jun T'way Air direct
28 May - 03 Jun China Eastern
25 May - 04 Jun Jeju Air direct

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

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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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