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

Return flights

30 Jul - 06 Aug	Fly Play
25 Jul - 27 Jul	Wizz Air Malta
23 Jul - 27 Jul	easyJet
24 Jul - 28 Jul	Fly Play
23 Jul - 30 Jul	Wizz Air
28 Jul - 31 Jul	Fly Play
23 Jul - 29 Jul	Fly Play
27 Jul - 30 Jul	Wizz Air
30 Jul - 08 Aug	Fly Play
27 Jul - 17 Aug	Vueling Airlines	direct
25 Jul - 01 Aug	Wizz Air Malta
27 Jul - 10 Aug	Vueling Airlines	direct
27 Jul - 03 Aug	Vueling Airlines	direct
23 Jul - 27 Jul	Fly Play	direct
30 Jul - 08 Aug	Fly Play	direct
25 Jul - 01 Aug	Fly Play	direct
23 Jul - 30 Jul	Fly Play	direct

Also check the deals for one-way flights from Keflavik to Barcelona 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 Barcelona in July from 331€

Return flights