AirHint found the following cheapest return flights from Athens (ATH) to Sofia (SOF) in April 2026 (see full year).

Return flights

09 Apr - 11 Apr	Aegean Airlines	direct
12 Apr - 14 Apr	Aegean Airlines	direct
11 Apr - 12 Apr	Aegean Airlines	direct
10 Apr - 12 Apr	Aegean Airlines	direct
12 Apr - 15 Apr	Aegean Airlines	direct
12 Apr - 13 Apr	Aegean Airlines	direct
10 Apr - 11 Apr	Aegean Airlines	direct
12 Apr - 23 Apr	SKY express	direct
12 Apr - 12 Apr	Turkish Airlines
10 Apr - 23 Apr	SKY express	direct

Also check the deals for one-way flights from Athens to Sofia in April.

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 Athens to Sofia in April from 127€

Return flights