AirHint found the following cheapest return flights from Lisbon (LIS) to Sofia (SOF) in August 2026 (see full year).

Return flights

31 Aug - 05 Sep	TAP
09 Aug - 12 Aug	SKY express
01 Aug - 15 Aug	Vueling Airlines
02 Aug - 12 Aug	SKY express
02 Aug - 05 Aug	SKY express
09 Aug - 19 Aug	SKY express
26 Aug - 16 Sep	SKY express
02 Aug - 19 Aug	SKY express
09 Aug - 26 Aug	SKY express
12 Aug - 02 Sep	SKY express
12 Aug - 19 Aug	SKY express
12 Aug - 26 Aug	SKY express

Also check the deals for one-way flights from Lisbon 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 Lisbon to Sofia in August from 215€

Return flights