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

Return flights

23 Jul - 04 Aug	SWISS
27 Jul - 14 Aug	Scandinavian Airlines
22 Jul - 06 Aug	Austrian Airlines
31 Jul - 26 Aug	SWISS
30 Jul - 26 Aug	Scandinavian Airlines
28 Jul - 26 Aug	Austrian Airlines
23 Jul - 26 Aug	SWISS
25 Jul - 26 Aug	SWISS
28 Jul - 24 Aug	Lufthansa
25 Jul - 10 Aug	SWISS

Also check the deals for one-way flights from Newark to Thessaloniki 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 Thessaloniki in July from $821

Return flights