AirHint found the following cheapest return flights from Helsinki (HEL) to Basel (BSL) in March 2026 (see full year).
Return flights
| 18 Mar - 25 Mar | Air France | ||
| 18 Mar - 21 Mar | Air France | ||
| 21 Mar - 24 Mar | KLM | ||
| 28 Mar - 01 Apr | Lufthansa | ||
| 17 Mar - 19 Mar | Finnair | ||
| 18 Mar - 22 Mar | Ryanair | ||
| 20 Mar - 22 Mar | Lufthansa |
Also check the deals for one-way flights from Helsinki to Basel in March.
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