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

Return flights

07 Jul - 21 Jul	Lufthansa
07 Jul - 08 Jul	Lufthansa
14 Jul - 21 Jul	Lufthansa
30 Jul - 06 Aug	Lufthansa
18 Jul - 28 Jul	Lufthansa
18 Jul - 23 Jul	Lufthansa
18 Jul - 21 Jul	Lufthansa
04 Jul - 06 Jul	Lufthansa
09 Jul - 14 Jul	Condor
23 Jul - 01 Aug	Austrian Airlines
31 Jul - 14 Aug	Wizz Air
16 Jul - 24 Jul	Lufthansa
10 Jul - 15 Jul	Condor
24 Jul - 04 Aug	Lufthansa
19 Jul - 10 Aug	Lufthansa
19 Jul - 03 Aug	Ryanair

Also check the deals for one-way flights from Basel to Helsinki 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 Basel to Helsinki in July from $239

Return flights