AirHint found the following cheapest return flights from Basel (BSL) to Amsterdam (AMS) in December 2026 (see full year).
Return flights
| 29 Dec - 02 Jan | KLM | direct | |
| 27 Dec - 03 Jan | KLM | direct | |
| 29 Dec - 01 Jan | KLM | direct | |
| 29 Dec - 29 Dec | KLM | direct | |
| 29 Dec - 30 Dec | KLM | direct | |
| 29 Dec - 31 Dec | KLM | direct |
Also check the deals for one-way flights from Basel to Amsterdam in December.
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