AirHint found the following cheapest one-way flights from Seoul (GMP) to Singapore (SIN) in May 2026 (see full year).
One-Way flights
| 20 May | Air Busan | ||
| 04 May | Air Busan | ||
| 13 May | Jeju Air | ||
| 05 May | Jeju Air | ||
| 11 May | Jeju Air | ||
| 03 May | Air Busan | ||
| 24 May | Jeju Air | ||
| 12 May | T'way Air | ||
| 19 May | T'way Air | ||
| 15 May | T'way Air |
Also check the deals for return flights from Seoul to Singapore 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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