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

Return flights

17 Jul - 22 Jul	LOT
23 Jul - 29 Jul	LOT
20 Jul - 29 Jul	Air Canada
21 Jul - 08 Aug	LOT
18 Jul - 25 Jul	LOT
18 Jul - 25 Aug	FrenchBee
15 Jul - 22 Jul	FrenchBee
17 Jul - 07 Aug	LOT
17 Jul - 08 Aug	LOT
15 Jul - 08 Aug	LOT
20 Jul - 24 Aug	United
31 Jul - 04 Aug	FrenchBee
30 Jul - 09 Aug	Lufthansa
31 Jul - 05 Aug	LOT
26 Jul - 02 Aug	Lufthansa

Also check the deals for one-way flights from Newark to Sofia in July.

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 Newark to Sofia in July from $597

Return flights