Altius recorded 303 priced readings of nonstop business-class round trips from San Francisco (SFO) to Singapore (SIN) booked 30 days out, across 138 departure dates between 2026-05-20 and 2026-10-05. Observed fares ran from US$6,081 to US$17,212. Every fare Altius recorded for trips booked 30 days out stayed close enough to what this route typically costs that none was flagged.