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

Return flights

31 Mar - 07 Apr	Delta
30 Mar - 06 Apr	Delta
07 Mar - 14 Mar	American Airlines
14 Mar - 21 Mar	American Airlines
27 Mar - 03 Apr	Delta
23 Mar - 30 Mar	jetBlue
26 Mar - 02 Apr	American Airlines
24 Mar - 31 Mar	American Airlines
13 Mar - 20 Mar	American Airlines
25 Mar - 01 Apr	Delta
24 Mar - 29 Mar	Delta
11 Mar - 18 Mar	American Airlines
12 Mar - 19 Mar	American Airlines

Also check the deals for one-way flights from Fort Lauderdale 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 Fort Lauderdale to Keflavik in March from 688€

Return flights