AirHint found the following cheapest return flights from Frankfurt (FRA) to Keflavik (KEF) in March 2026 (see full year).

Return flights

02 Mar - 16 Mar	Ryanair
07 Mar - 14 Mar	Ryanair
21 Mar - 28 Mar	Ryanair
16 Mar - 24 Mar	Ryanair
23 Mar - 27 Mar	Ryanair
04 Mar - 11 Mar	Ryanair
11 Mar - 15 Mar	Ryanair
27 Mar - 31 Mar	easyJet
28 Mar - 08 Apr	Ryanair
02 Mar - 16 Mar	Icelandair	direct
04 Mar - 11 Mar	Icelandair	direct
29 Mar - 09 Apr	Icelandair	direct
28 Mar - 09 Apr	Icelandair	direct
30 Mar - 06 Apr	Scandinavian Airlines
28 Mar - 11 Apr	Ryanair
27 Mar - 06 Apr	easyJet
28 Mar - 03 Apr	Icelandair	direct
27 Mar - 10 Apr	Scandinavian Airlines
23 Mar - 05 Apr	Icelandair	direct
30 Mar - 04 Apr	Icelandair	direct

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

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 Frankfurt to Keflavik in March from 210€

Return flights