Cheapest return flights from Philadelphia to Keflavik in April from 349€

Best time to book flights for Philadelphia (PHL) to Keflavik (KEF) flights at AirHint

AirHint found the following cheapest return flights from Philadelphia (PHL) to Keflavik (KEF) in April 2025 (see full year).

Return flights

09 Apr - 15 Apr Frontier Airlines
09 Apr - 01 May Frontier Airlines
02 Apr - 16 Apr Frontier Airlines
01 Apr - 15 Apr Frontier Airlines
09 Apr - 30 Apr Frontier Airlines
16 Apr - 07 May Frontier Airlines
02 Apr - 24 Apr Frontier Airlines
30 Apr - 13 May Lufthansa
30 Apr - 06 May Lufthansa
09 Apr - 23 Apr British Airways
15 Apr - 27 Apr Frontier Airlines
15 Apr - 05 May British Airways
02 Apr - 23 Apr Icelandair
08 Apr - 29 Apr Lufthansa
09 Apr - 26 Apr Frontier Airlines
14 Apr - 05 May Frontier Airlines
22 Apr - 06 May jetBlue
23 Apr - 18 May Lufthansa
15 Apr - 06 May Icelandair

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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