AirHint found the following cheapest return flights from Prague (PRG) to Keflavik (KEF) in July 2025 (see full year).

Return flights

30 Jul - 03 Aug	SWISS
27 Jul - 31 Jul	Austrian Airlines
30 Jul - 10 Aug	SWISS
27 Jul - 30 Jul	SWISS
27 Jul - 03 Aug	Austrian Airlines
28 Jul - 31 Jul	SWISS
27 Jul - 28 Jul	Austrian Airlines
27 Jul - 11 Aug	SWISS
30 Jul - 06 Aug	SWISS
31 Jul - 10 Aug	SWISS
30 Jul - 02 Aug	SWISS
27 Jul - 02 Aug	Austrian Airlines
28 Jul - 03 Aug	Lufthansa
27 Jul - 01 Aug	Austrian Airlines
29 Jul - 31 Jul	Lufthansa
27 Jul - 31 Jul	Fly Play	direct
27 Jul - 30 Jul	Fly Play	direct
27 Jul - 28 Jul	Fly Play	direct
28 Jul - 31 Jul	Icelandair	direct

Also check the deals for one-way flights from Prague to Keflavik 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 Prague to Keflavik in July from 229€

Return flights