Flight
The Oakland Airport is a bit closer than San Francisco. Flight options from Southern California are often cheaper here as well. If you aren't renting a car please let us know and we'll help you with transportation options to Sonoma County, its a 1 to 2 hour drive to Petaluma/Sonoma.
Flight
If you're lucky and book early you can find decent deals into the local airport. Its the closest by far (about 20 mins away) and a very easy place to travel into. Alaska flies here directly from Santa Ana and San Diego. Also check Avelo Airlines, they have limited flights but amazing deals!
Flight
SFO would be the other option for travel. There are more flight options here but is a bit further from Sonoma/Petaluma.
Hotel
This hotel is the closest to the venue.
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A great option as its in the heart of downtown Petaluma, walkable to all restaurants.