Cheapest return HEL–BSL flights, May

AirHint found the following cheapest return flights from Helsinki (HEL) to Basel (BSL) in May 2026 (see full year).

Return flights

31 May - 17 Jun Ryanair
28 May - 03 Jun Ryanair
25 May - 01 Jun Ryanair
24 May - 05 Jun Ryanair
28 May - 04 Jun Lufthansa
29 May - 05 Jun Lufthansa
30 May - 17 Jun Lufthansa
25 May - 28 May Scandinavian Airlines
31 May - 03 Jun Ryanair
30 May - 14 Jun KLM
31 May - 14 Jun Ryanair
25 May - 26 May Lufthansa

Also check the deals for one-way flights from Helsinki to Basel in May.

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