Airports you should consider include Nanaimo - which is actually much closer to Ladysmith harbour than Nanaimo. You're already in the Southern Gulf Islands there - just book your moorage in advance. The other to consider is Comox which has good service
connecting from Vancouver - airport runways are military, ie, good, and good connections to Vancouver and Calgary. Comox marinas
not so good though imo. I'd also suggest Campbell River, which is where my boat
is. Bit less air service
than Comox but better marinas
imo and a gateway to Desolation Sound, the Discovery Islands and further north. Connection is from Vancouver.