There are four possible airports that you could fly into:

Feel free to change the dates of the search below. I've chosen the dates that will result in the least use of vacation days. However, the Pacific coast is beautiful and you could easily fill a week or two exploring it.

Try this search first, it'll search the closest airports (MRY, SJC)
Search for flights:  
From:
To:
Depart:
Return:
Adults:
If the first search is too expensive, try this one, it searches SFO and OAK
Search for flights:  
From:
To:
Depart:
Return:
Adults: