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

Return flights

24 May - 27 May	Wizz Air
09 May - 27 May	Ryanair
09 May - 13 May	Ryanair
08 May - 18 May	Wizz Air
20 May - 27 May	Ryanair
21 May - 27 May	Wizz Air
18 May - 20 May	Ryanair
11 May - 15 May	Ryanair
09 May - 16 May	Air Serbia
02 May - 13 May	Air Serbia
28 May - 02 Jun	Ryanair
28 May - 01 Jun	Ryanair
30 May - 03 Jun	Ryanair
27 May - 01 Jun	Wizz Air
29 May - 01 Jun	Air Serbia
30 May - 07 Jun	Ryanair
27 May - 10 Jun	SKY express
20 May - 03 Jun	SKY express

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

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 May from $144

Return flights