Seattle → Shanghai flights
Fares on SEA–PVG have a median of $517 across 30 snapshots; booking when prices sit near the $506 p25 floor is your most reliable strategy.
Seattle–Shanghai: Target $506–$517 and watch for dips to $459
Key takeaways
- The median fare is $517, with the middle 50% of observed prices falling between $506 and $599 — a relatively tight band for a transpacific route.
- The low of $459 represents the bottom of a 45% spread, meaning genuine deals do surface but aren't the norm.
- $599 (p75) is your warning threshold — fares above this are in the pricier quarter and worth waiting out if your travel dates are flexible.
- The $207 gap between low and high ($459–$666) signals meaningful volatility; checking fares across several weeks rather than booking on first look is worthwhile.
- With a 45% spread, this route has enough price movement to reward patience, but the p25–median gap of only $11 suggests the floor is fairly stable once fares settle.
30-day price trend
See full numbers and stats on the SEA → PVG price history page.
The full picture
The SEA–PVG fare landscape, drawn from 30 daily snapshots of the cheapest available cached fares, tells a story of moderate volatility on a long-haul transpacific corridor. The median sits at $517, and half of all observed fares fall between $506 and $599 — a range that's actually narrower than many comparable Asia routes. That $93 interquartile range gives travelers a useful anchor: if you see a fare at or below $506, you're in the bottom quarter of what the market typically offers, and acting quickly makes sense. The $459 floor is real but rare; chasing it exclusively risks watching prices climb into the upper range instead.
On the booking-horizon side, transpacific fares to Shanghai historically soften during shoulder booking windows — roughly 6 to 10 weeks before departure for economy seats — but the data here doesn't tag specific lead times to specific price points, so treat that as directional rather than prescriptive. What the spread of 45% does confirm is that this isn't a route where fares are monolithic; prices move meaningfully depending on when you look. Setting a fare alert anchored near the $506 p25 level is a practical way to act on a confirmed dip rather than trying to time an invisible bottom.
No dominant carrier pattern is distinguishable from this dataset alone, so carrier-specific advice would be speculation. What's worth noting is that the high of $666 — about 29% above the median — tends to appear as departure approaches or during peak travel periods, making early monitoring more valuable than last-minute hope. One honest caveat: 30 snapshots capture a useful slice of the market but not every seasonal cycle. If your travel falls around major Chinese holidays (Golden Week, Lunar New Year), expect the upper range to expand beyond what this data reflects.
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AI-authored from this route's 30-day price index. Article last regenerated Jun 20, 2026. Fares shift continuously — confirm at booking.