Seattle → Shanghai flights
Fares on SEA–PVG have a median of $453 across 30 daily snapshots; bottom-quartile deals sit at $381, so booking 6–10 weeks out gives you the best shot at the lower end.
Seattle to Shanghai: target $381–$453 and book early
Key takeaways
- Median fare is $453 across 30 daily cached-fare snapshots — a reasonable planning anchor for most travelers.
- Bottom-quartile fares reach $381 (p25), meaning roughly one in four snapshots showed prices at or below that level — a realistic stretch target.
- The floor was $368, but it appeared rarely; budget closer to $381 rather than chasing that single low.
- Spread is 26% between low and high ($368–$462), moderate enough that timing matters but not dramatically so.
- The p75 matches the median at $453, signaling that prices cluster near the top of the range — lower fares are the exception, not the norm.
30-day price trend
See full numbers and stats on the SEA → PVG price history page.
The full picture
The SEA–PVG fare landscape over our 30-day snapshot window is tighter than many transpacific routes but still shows meaningful variation. With a spread of 26% separating the observed floor ($368) and ceiling ($462), there is real money at stake — roughly $94 per ticket — but prices do not swing wildly day to day. The interquartile range of $381 to $453 is the most actionable band: fares land here the majority of the time, and planning your budget around $420–$450 is both honest and useful.
The shape of the distribution tells an important story. Because the p75 and the median are both $453, a large share of snapshots clustered at the upper end of the range. That means sub-$400 fares represent a genuine but minority outcome — visible in the data, but not the default. Travelers who can be flexible on travel timing and who begin monitoring fares roughly 6–10 weeks before departure give themselves the best chance of catching one of those lower-end windows before inventory tightens. Last-minute bookings on a long-haul route like Seattle–Shanghai historically carry yield-management risk, and nothing in this dataset contradicts that general principle.
Because the data reflects cached cheapest fares rather than airline-specific fare-class detail, we cannot reliably attribute pricing patterns to a single carrier or pinpoint a reliable day-of-week advantage. The honest caveat: 30 snapshots is a solid sample for a point-in-time view, but transpacific fares respond sharply to seasonal demand shifts, geopolitical factors, and fuel-surcharge adjustments — none of which this window can predict. Treat $381 as your aspirational target and $453 as your fallback budget.
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Related travel pages
Why we regenerated this article: Bottom quartile ↓ 12% ($435 → $381). 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 Aug 29, 2026. Fares shift continuously — confirm at booking.