San Luis Obispo County Regional Airport is located approximately 6 minutes from the wedding venue, and 10-15 minutes from the beach. There are direct flights from Denver, Portland, Seattle, and Phoenix into SLO. If you can swing it, we highly recommend flying into this local airport to get the full SLO experience.
Otherwise, Los Angeles International Airport, Santa Barbara Municipal Airport, and San Jose International Airport are other options if you have time for some extra driving. Flying into San Jose early may allow you to squeeze in a road trip along the beautiful Highway 1 along Big Sur. We would never discourage adding a little more adventure to your trip out west.
From any of these airports, you can rent a vehicle. Or, if you fly into SLO, you can Uber around town.