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

Return flights

13 Mar - 16 Mar	Ryanair
11 Mar - 15 Mar	Ryanair
09 Mar - 13 Mar	Ryanair
11 Mar - 14 Mar	Ryanair
09 Mar - 12 Mar	Ryanair
09 Mar - 19 Mar	Ryanair
11 Mar - 16 Mar	Ryanair
09 Mar - 14 Mar	Ryanair
10 Mar - 14 Mar	Ryanair
14 Mar - 18 Mar	Ryanair
25 Mar - 08 Apr	Ryanair
28 Mar - 08 Apr	Ryanair
29 Mar - 10 Apr	Ryanair
16 Mar - 12 Apr	easyJet
28 Mar - 07 Apr	Ryanair
21 Mar - 06 Apr	Ryanair
31 Mar - 11 Apr	Ryanair
23 Mar - 01 Apr	KLM
22 Mar - 06 Apr	Wizz Air Malta
30 Mar - 04 Apr	Ryanair

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 184€

Return flights