AirHint found the following cheapest return flights from Frankfurt (FRA) to Basel (BSL) in August 2025 (see full year).

Return flights

18 Aug - 31 Aug	Lufthansa	direct
28 Aug - 31 Aug	Lufthansa	direct
18 Aug - 01 Sep	Lufthansa	direct
14 Aug - 18 Aug	Lufthansa	direct
17 Aug - 24 Aug	Air Dolomiti	direct
04 Aug - 18 Aug	Air Dolomiti	direct
06 Aug - 11 Aug	Air Dolomiti	direct
07 Aug - 11 Aug	Air Dolomiti	direct
17 Aug - 23 Aug	Lufthansa	direct
21 Aug - 22 Aug	Ryanair
08 Aug - 10 Aug	KLM

Also check the deals for one-way flights from Frankfurt to Basel in August.

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 Frankfurt to Basel in August from 140€

Return flights