Cheapest return flights from Cardiff to Keffallinia in May from $578

AirHint found the following cheapest return flights from Cardiff (CWL) to Keffallinia (EFL) in May 2026 (see full year).

Return flights

26 May - 09 Jun KLM
31 May - 07 Jun KLM
26 May - 09 Jun TUI direct

Also check the deals for one-way flights from Cardiff to Keffallinia in May.

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