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

Return flights

26 Aug - 02 Sep	Air Europa
25 Aug - 01 Sep	easyJet	direct
27 Aug - 01 Sep	easyJet	direct
25 Aug - 08 Sep	Ryanair
22 Aug - 28 Aug	Wizz Air
28 Aug - 01 Sep	Ryanair
25 Aug - 28 Aug	Iberia Express
28 Aug - 01 Sep	easyJet	direct
20 Aug - 25 Aug	Iberia Express
28 Aug - 04 Sep	Ryanair
29 Aug - 03 Sep	easyJet	direct
31 Aug - 06 Sep	Iberia
19 Aug - 25 Aug	Iberia
21 Aug - 24 Aug	Ryanair
28 Aug - 04 Sep	easyJet	direct
20 Aug - 29 Aug	Iberia Express
19 Aug - 28 Aug	Iberia Express
13 Aug - 20 Aug	Lufthansa
11 Aug - 21 Aug	easyJet	direct
20 Aug - 27 Aug	Wizz Air

Also check the deals for one-way flights from Madrid 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 Madrid to Basel in August from $127

Return flights