Cheapest return flights from Philadelphia to Keflavik in March from 319€

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 March 2025 (see full year).

Return flights

17 Mar - 08 Apr Frontier Airlines
17 Mar - 09 Apr Frontier Airlines
27 Mar - 09 Apr Frontier Airlines
10 Mar - 13 Mar Frontier Airlines
03 Mar - 06 Mar Frontier Airlines
17 Mar - 27 Mar Frontier Airlines
17 Mar - 26 Mar Frontier Airlines
31 Mar - 09 Apr Frontier Airlines
27 Mar - 06 Apr Frontier Airlines
22 Mar - 26 Mar Frontier Airlines
26 Mar - 09 Apr Frontier Airlines
31 Mar - 06 Apr Frontier Airlines
03 Mar - 08 Mar Frontier Airlines
03 Mar - 07 Mar Frontier Airlines
01 Mar - 18 Mar jetBlue
09 Mar - 12 Mar Frontier Airlines
25 Mar - 08 Apr Frontier Airlines
25 Mar - 04 Apr Frontier Airlines
18 Mar - 09 Apr Spirit Airlines
18 Mar - 26 Mar Spirit Airlines

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

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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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