Cheapest return flights from Philadelphia to Sofia in April from $453

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

Return flights

21 Apr - 29 Apr Lufthansa
13 Apr - 22 Apr Air Canada
28 Apr - 05 May Air Canada
21 Apr - 28 Apr Air Canada
21 Apr - 04 May Air Canada
27 Apr - 04 May Air Canada
06 Apr - 13 Apr Air Canada
13 Apr - 19 Apr Air Canada
29 Apr - 06 May Lufthansa

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

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