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

Return flights

06 May - 13 May	Vueling Airlines
06 May - 11 May	Vueling Airlines
06 May - 09 May	Vueling Airlines
16 May - 19 May	easyJet
14 May - 17 May	Ryanair
20 May - 23 May	Ryanair
05 May - 12 May	easyJet
13 May - 16 May	Ryanair
16 May - 18 May	easyJet
15 May - 18 May	Ryanair
24 May - 03 Jun	SKY express
17 May - 03 Jun	SKY express
20 May - 03 Jun	SKY express
13 May - 03 Jun	SKY express
27 May - 03 Jun	SKY express
24 May - 10 Jun	SKY express
20 May - 10 Jun	SKY express
27 May - 10 Jun	SKY express

Also check the deals for one-way flights from Lisbon to Sofia 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 Lisbon to Sofia in May from 134€

Return flights