Cheapest return flights from Philadelphia to Keflavik in April from $555

AirHint found the following cheapest return flights from Philadelphia (PHL) to Keflavik (KEF) in April 2026 (see full year).

Return flights

15 Apr - 22 Apr Finnair
24 Apr - 05 May Finnair

Also check the deals for one-way flights from Philadelphia to Keflavik in April.

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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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