AirHint found the following cheapest return flights from Karlsruhe/Baden-Baden (FKB) to Hamburg (HAM) in December 2025 (see full year).
Return flights
| 20 Dec - 04 Jan | Ryanair | ||
| 18 Dec - 21 Dec | Ryanair | ||
| 29 Dec - 31 Dec | Ryanair | ||
| 20 Dec - 24 Dec | Ryanair | ||
| 27 Dec - 03 Jan | Ryanair | ||
| 10 Dec - 17 Dec | Ryanair |
Also check the deals for one-way flights from Karlsruhe/Baden-Baden to Hamburg in December.
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