AirHint found the following cheapest return flights from Kuala Lumpur (KUL) to Porto (OPO) in December 2025 (see full year).
Return flights
| 05 Dec - 12 Dec | SriLankan Airlines | ||
| 30 Dec - 03 Jan | Etihad Airways | ||
| 23 Dec - 31 Dec | KLM | ||
| 21 Dec - 29 Dec | Turkish Airlines | ||
| 24 Dec - 03 Jan | KLM | ||
| 24 Dec - 02 Jan | Etihad Airways |
Also check the deals for one-way flights from Kuala Lumpur to Porto in December.
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