Cheapest return flights from Warsaw to Sofia in September from $175

Best time to book flights for Warsaw (WAW) to Sofia (SOF) flights at AirHint

AirHint found the following cheapest return flights from Warsaw (WAW) to Sofia (SOF) in September 2025 (see full year).

Return flights

19 Sep - 24 Sep KLM
19 Sep - 24 Sep LOT direct

Also check the deals for one-way flights from Warsaw to Sofia in September.

Skyscanner

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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