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

Return flights

11 Apr - 25 Apr	Ryanair
16 Apr - 20 Apr	Ryanair
17 Apr - 26 Apr	Ryanair
29 Apr - 04 May	Wizz Air Malta
17 Apr - 20 Apr	Ryanair
16 Apr - 19 Apr	Ryanair
24 Apr - 26 Apr	Ryanair
18 Apr - 20 Apr	Ryanair
10 Apr - 13 Apr	Lufthansa	direct
18 Apr - 20 Apr	Lufthansa	direct
17 Apr - 20 Apr	Lufthansa	direct
29 Apr - 04 May	Lufthansa	direct
30 Apr - 04 May	Air Serbia
24 Apr - 01 May	Lufthansa	direct
29 Apr - 03 May	Lufthansa	direct
30 Apr - 04 May	Lufthansa	direct
30 Apr - 01 May	Ryanair
30 Apr - 02 May	Air Serbia
28 Apr - 03 May	easyJet
30 Apr - 02 May	Lufthansa	direct

Also check the deals for one-way flights from Frankfurt 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 Frankfurt to Sofia in April from 110€

Return flights