What is IfOnly's phone number? January 10, 2019 18:31 Updated Follow You may contact IfOnly at 415-376-4640. Feel free to call us during business hours. (9am–6pm PT M-Th, 9am-5pm F) Related articles What portion of proceeds goes to charity for each order? Can I include a travel fee on top of the price of my experience? How do open auctions work? Comments 0 comments Please sign in to leave a comment.