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

Return flights

27 Jul - 29 Jul	Wizz Air
29 Jul - 16 Aug	Wizz Air
22 Jul - 06 Aug	Wizz Air
27 Jul - 10 Aug	Wizz Air
22 Jul - 26 Jul	Lufthansa
27 Jul - 05 Aug	Wizz Air
29 Jul - 07 Aug	Wizz Air
29 Jul - 10 Aug	Wizz Air
27 Jul - 28 Jul	SWISS
29 Jul - 13 Aug	SWISS
29 Jul - 14 Aug	SWISS
24 Jul - 31 Jul	Wizz Air
23 Jul - 06 Aug	easyJet
29 Jul - 05 Aug	Wizz Air
21 Jul - 25 Jul	SWISS
22 Jul - 25 Jul	Scandinavian Airlines	direct
28 Jul - 31 Jul	Scandinavian Airlines
21 Jul - 25 Jul	Scandinavian Airlines	direct
24 Jul - 27 Jul	Scandinavian Airlines
25 Jul - 25 Jul	Scandinavian Airlines

Also check the deals for one-way flights from Keflavik to Oslo 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 Keflavik to Oslo in July from 270€

Return flights