AirHint found the following cheapest one-way flights from Seoul (GMP) to Singapore (SIN) in May 2026 (see full year).
One-Way flights
| 12 May | Korean Air | ||
| 18 May | Korean Air | ||
| 29 May | Korean Air | ||
| 31 May | Air China | ||
| 20 May | Air China |
Also check the deals for return flights from Seoul to Singapore in May.
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