AirHint found the following cheapest return flights from Helsinki (HEL) to Basel (BSL) in July 2025 (see full year).

Return flights

30 Jul - 06 Aug	Lufthansa
19 Jul - 21 Jul	KLM
08 Jul - 22 Jul	Lufthansa
01 Jul - 08 Jul	Lufthansa
17 Jul - 20 Jul	Lufthansa
16 Jul - 18 Jul	Lufthansa
16 Jul - 19 Jul	Lufthansa
08 Jul - 15 Jul	Lufthansa
05 Jul - 10 Jul	Turkish Airlines
18 Jul - 20 Jul	KLM
04 Jul - 04 Jul	Lufthansa

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

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from Helsinki to Basel in July from $212

Return flights