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

Return flights

12 May - 19 May	Ryanair
04 May - 07 May	Ryanair
11 May - 18 May	Ryanair
29 May - 02 Jun	Ryanair
03 May - 09 May	Ryanair
26 May - 02 Jun	Ryanair
02 May - 05 May	Ryanair
09 May - 23 May	Ryanair
08 May - 10 May	Ryanair
14 May - 21 May	Lufthansa
18 May - 23 May	Ryanair
02 May - 09 May	Ryanair
30 May - 02 Jun	Ryanair
30 May - 16 Jun	Ryanair
30 May - 06 Jun	Ryanair
16 May - 02 Jun	Ryanair	direct
20 May - 07 Jun	Ryanair
31 May - 06 Jun	Ryanair
19 May - 02 Jun	Ryanair	direct
26 May - 02 Jun	Ryanair	direct

Also check the deals for one-way flights from Dublin 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 Dublin to Sofia in May from $128

Return flights