What is IfOnly's phone number? Feel free to call us at: 415-376-4640 November 28, 2015 17:04 Updated Follow You may contact IfOnly at 415-376-4640. Feel free to call us during business hours. (7am–7pm PT M-F, 8am–4pm PT Sat-Sun) Related articles How Do I Become a Luminary? Comments 0 comments Please sign in to leave a comment.