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

Return flights

26 Jul - 29 Jul	Ryanair
25 Jul - 29 Jul	easyJet
23 Jul - 30 Jul	Ryanair
31 Jul - 07 Aug	Ryanair
25 Jul - 28 Jul	easyJet
24 Jul - 27 Jul	Ryanair
28 Jul - 31 Jul	Lufthansa
30 Jul - 20 Aug	easyJet
26 Jul - 09 Aug	Ryanair
22 Jul - 25 Jul	Air France
23 Jul - 25 Jul	Ryanair
25 Jul - 31 Jul	easyJet
27 Jul - 30 Jul	Ryanair
25 Jul - 01 Aug	easyJet

Also check the deals for one-way flights from Marseille 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 Marseille to Keflavik in July from 364€

Return flights