AirHint found the following cheapest return flights from Stuttgart (STR) to Porto (OPO) in December 2026 (see full year).
Return flights
| 04 Dec - 12 Dec | SWISS | ||
| 19 Dec - 10 Jan | Lufthansa | ||
| 19 Dec - 03 Jan | Eurowings |
Also check the deals for one-way flights from Stuttgart to Porto in December.
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