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SFO to Singapore fares had a $325 median over the last 30 days; most fares clustered near that price, so book once you see it.
Written from this route's 30-day price index (30 daily samples). Article last regenerated Nov 7, 2026.
See full numbers and stats on the SFO → SIN price history page.
Over the last 30 days, every day in the window had a cached fare for SFO to Singapore, giving a solid, full picture. The median sat at $325, and the middle half of all fares — the p25 to p75 range — was remarkably narrow, just $313 to $329. That tells you most days priced within $16 of each other, a tighter clustering than you'll see on many long-haul routes. The $411 high appears to be an isolated spike rather than a recurring pattern, since it sits well above the p75 mark.
Because the bulk of fares cluster so close to the median, there isn't strong evidence of a specific booking window where prices reliably soften — this dataset doesn't show a clear early-bird discount or last-minute spike pattern beyond that one outlier day. What it does show is consistency: if you see a fare at or near $325, or especially near the $312-$313 low end, you're already at or below where most fares land. Waiting for a dramatically better deal on this route, based on this data, isn't well supported.
We don't have visibility into a dominant carrier or specific day-of-week patterns from this data, so we can't make claims about particular airlines or departure days being cheaper. The honest takeaway is simple: this is a fairly stable route price-wise, with a tight 32% spread mostly explained by a single high fare rather than constant swings. If your travel dates are flexible, aim for the $313-$329 range and don't expect to time the market much further — the data doesn't show a reliable pattern to exploit, and 30 days of history, while a full window, is still a limited snapshot of how fares might move over a longer booking horizon.
Why we regenerated this article: Price spread widened by 12 points. We only rewrite when the underlying price index actually moves — stable weeks keep the previous take.
AI-authored from this route's 30-day price index. Article last regenerated Nov 7, 2026. Fares shift continuously — confirm at booking.