The foot ferry to Skomer Island departs from Lockley Lodge Visitor Centre at Martin's Haven on the Pembrokeshire coast. The crossing takes approximately 15 minutes each way, with sailings operating Tuesday through Sunday between April and September.

Pembrokeshire Islands Boat Trips is the sole operator permitted to land passengers on the island.

Access involves a fairly steep set of steps and an uneven footpath at Martin's Haven, and visitors must climb 87 steep steps from the landing jetty on the island itself, so a reasonable level of fitness is recommended.

Boats run every 30 minutes, with morning departures allowing around 4. 5 hours on the island before return sailings begin in the afternoon. Crossings are weather-dependent and may be cancelled at short notice.