Cheapest return flights from Newark to Sofia in September from $393

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

Return flights

02 Sep - 16 Sep Air Canada
03 Sep - 15 Sep LOT
06 Sep - 09 Sep LOT
27 Sep - 07 Oct LOT
07 Sep - 11 Sep Aer Lingus

Also check the deals for one-way flights from Newark 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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