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Median SEA–AMS fare is $330 over 20 sampled days in the last 30; most fares sit near that number, so book when you see it.
Written from this route's 30-day price index (20 daily samples). Article last regenerated Nov 7, 2026.
See full numbers and stats on the SEA → AMS price history page.
The pricing picture for Seattle to Amsterdam is unusually bimodal: most sampled fares land right around $330, with the middle half (p25–p75) squeezed into a narrow $329–$336 band. That tight clustering tells you the "typical" fare is reliable and well-defined. But the $645 high end drags the overall spread to 96%, meaning a meaningful minority of days saw fares roughly double the median — likely premium or constrained-inventory pricing rather than the norm.
Because the bulk of fares sit so close to the low end of the range, the practical takeaway is that $330 is an achievable, not aspirational, target. The data doesn't let us pinpoint which part of a booking horizon (10 weeks out vs. 3 weeks out) tends to produce the cheaper fares, since we only have a 30-day snapshot of cached prices rather than a time-to-departure curve. What we can say is that if you're seeing something close to $330–$336, that's in line with roughly 75% of recent fares, and there's little reason to expect a meaningfully better deal is lurking — the downside risk (paying closer to $645) looks like the bigger threat than the upside of waiting.
No single carrier stood out clearly enough in the data to make airline-specific recommendations, and we don't have day-of-week granularity to say whether midweek or weekend departures trend cheaper. The sample — 20 of the last 30 days — is reasonably solid for establishing the median and middle-half range, but it's not large enough to fully explain the high-end outliers. Treat $330–$336 as the number to compare against, and be skeptical of any fare materially above that unless a specific date or route constraint explains it.
Why we regenerated this article: Median fare ↓ 12% ($374 → $330). 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.