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

Return flights

25 Aug - 07 Sep	LOT
21 Aug - 25 Aug	Ryanair
07 Aug - 14 Aug	Air Serbia
15 Aug - 20 Aug	TAROM
20 Aug - 22 Aug	Ryanair
02 Aug - 12 Aug	Ryanair
13 Aug - 18 Aug	Ryanair
19 Aug - 22 Aug	Ryanair
14 Aug - 18 Aug	Ryanair
14 Aug - 22 Aug	Ryanair
24 Aug - 27 Aug	Eurowings

Also check the deals for one-way flights from Thessaloniki to Keflavik 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 Thessaloniki to Keflavik in August from 382€

Return flights