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

Return flights

09 Jul - 17 Jul	SWISS
09 Jul - 18 Jul	SWISS
19 Jul - 28 Jul	SWISS
09 Jul - 16 Jul	Lufthansa
05 Jul - 12 Jul	SWISS
14 Jul - 20 Jul	SWISS
16 Jul - 20 Jul	SWISS
16 Jul - 19 Jul	SWISS
23 Jul - 30 Jul	Aer Lingus
17 Jul - 20 Jul	Lufthansa
29 Jul - 08 Aug	Aer Lingus
25 Jul - 17 Aug	easyJet
26 Jul - 07 Aug	SWISS
29 Jul - 06 Aug	easyJet
29 Jul - 04 Aug	Fly Play	direct
24 Jul - 07 Aug	easyJet
24 Jul - 03 Aug	easyJet
30 Jul - 07 Aug	Scandinavian Airlines
15 Jul - 15 Aug	easyJet
24 Jul - 03 Aug	Fly Play	direct

Also check the deals for one-way flights from Paris 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 Paris to Keflavik in July from $323

Return flights