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

Return flights

30 Jul - 30 Aug	Fly Play
22 Jul - 25 Jul	Wizz Air Malta
13 Jul - 17 Jul	Vueling Airlines
28 Jul - 31 Aug	easyJet
22 Jul - 30 Jul	Wizz Air Malta
25 Jul - 27 Jul	Wizz Air Malta
29 Jul - 07 Aug	Wizz Air Malta
17 Jul - 25 Jul	Wizz Air Malta
22 Jul - 28 Jul	Wizz Air Malta
22 Jul - 26 Jul	Wizz Air Malta
25 Jul - 31 Jul	Wizz Air Malta
22 Jul - 27 Jul	Wizz Air Malta
26 Jul - 30 Aug	Wizz Air
23 Jul - 26 Jul	Transavia France
30 Jul - 08 Aug	Fly Play
25 Jul - 09 Aug	Wizz Air Malta
30 Jul - 05 Aug	easyJet
28 Jul - 31 Aug	Fly Play	direct
26 Jul - 01 Aug	Wizz Air
28 Jul - 03 Aug	KLM

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 $262

Return flights