AirHint found the following cheapest return flights from Singapore (SIN) to Keflavik (KEF) in January 2026 (see full year).
Return flights
| 29 Jan - 03 Feb | Lufthansa | ||
| 24 Jan - 31 Jan | Lufthansa | ||
| 31 Jan - 09 Feb | Qantas | ||
| 01 Jan - 24 Jan | Lufthansa |
Also check the deals for one-way flights from Singapore to Keflavik in January.
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