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

Return flights

29 Aug - 14 Sep	Ryanair
29 Aug - 31 Aug	Ryanair
29 Aug - 01 Sep	Ryanair
29 Aug - 08 Sep	Ryanair
30 Aug - 10 Sep	Ryanair
22 Aug - 01 Sep	Wizz Air
29 Aug - 05 Sep	Ryanair
29 Aug - 19 Sep	Ryanair	direct
29 Aug - 14 Sep	Ryanair	direct
29 Aug - 15 Sep	Ryanair	direct
29 Aug - 17 Sep	Ryanair	direct
20 Aug - 26 Aug	Wizz Air
20 Aug - 27 Aug	Wizz Air
20 Aug - 31 Aug	Wizz Air
22 Aug - 25 Aug	Wizz Air
20 Aug - 25 Aug	Wizz Air
22 Aug - 26 Aug	Wizz Air
25 Aug - 31 Aug	Ryanair
22 Aug - 30 Aug	Wizz Air
24 Aug - 27 Aug	Ryanair

Also check the deals for one-way flights from Madrid to Sofia 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 Sofia in August from $159

Return flights