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

Return flights

25 Aug - 19 Sep	SWISS
31 Aug - 07 Sep	SWISS
26 Aug - 02 Sep	British Airways
18 Aug - 08 Sep	Lufthansa
28 Aug - 04 Sep	Austrian Airlines
19 Aug - 26 Aug	Scandinavian Airlines
20 Aug - 27 Aug	SWISS
27 Aug - 03 Sep	Scandinavian Airlines
18 Aug - 25 Aug	SWISS
07 Aug - 02 Sep	British Airways
22 Aug - 29 Aug	Scandinavian Airlines
13 Aug - 20 Aug	SWISS
29 Aug - 05 Sep	Scandinavian Airlines
11 Aug - 27 Aug	SWISS
21 Aug - 28 Aug	Scandinavian Airlines
25 Aug - 01 Sep	LOT
14 Aug - 21 Aug	Turkish Airlines
07 Aug - 14 Aug	Scandinavian Airlines
15 Aug - 21 Sep	Austrian Airlines
11 Aug - 18 Aug	TAP

Also check the deals for one-way flights from Newark to Thessaloniki in August.

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 August from $472

Return flights