AirHint found the following cheapest return flights from Sofia (SOF) to Lisbon (LIS) in October 2025 (see full year).

Return flights

25 Oct - 28 Oct	Ryanair
15 Oct - 22 Oct	Ryanair
14 Oct - 15 Oct	Ryanair
25 Oct - 29 Oct	Ryanair
07 Oct - 15 Oct	Ryanair
22 Oct - 29 Oct	Ryanair
25 Oct - 30 Oct	Ryanair
21 Oct - 22 Oct	Ryanair
25 Oct - 01 Nov	Ryanair
25 Oct - 06 Nov	Ryanair
11 Oct - 15 Oct	Ryanair
13 Oct - 15 Oct	Ryanair
29 Oct - 05 Nov	Ryanair
29 Oct - 28 Nov	Ryanair
30 Oct - 06 Nov	Air Serbia
30 Oct - 05 Nov	Air Serbia
31 Oct - 07 Nov	Ryanair
29 Oct - 04 Nov	Wizz Air
28 Oct - 02 Nov	Ryanair
27 Oct - 02 Nov	Ryanair

Also check the deals for one-way flights from Sofia to Lisbon in October.

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 Sofia to Lisbon in October from 109€

Return flights