Seattle → Osaka flights
On this Seattle–Osaka route, the median cheapest fare across recent snapshots is $806, though bottom-quartile deals reach $508 — a 59% spread worth monitoring closely.
Seattle–Osaka fares median $806, but lows hit $508
Key takeaways
- $806 is the median cheapest fare observed across 12 daily snapshots on this route.
- $508 is the lowest recorded fare — sitting at or below the 25th percentile, meaning it's genuinely rare but documented.
- The 59% spread between low and high is wide, suggesting price volatility that rewards patient monitoring.
- With only 12 samples, these figures are directionally useful but should be treated as preliminary — a larger window would sharpen confidence.
- The p75 matches the high at $806, indicating most snapshots cluster at the upper end; the cheap fares are the exception, not the rule.
30-day price trend
See full numbers and stats on the SEA → KIX price history page.
The full picture
The Seattle–Osaka (KIX) route shows a striking price range: a documented low of $508 versus a median — and 75th-percentile ceiling — of $806. That 59% spread is notably wide for a transpacific route with a limited sample, and it tells you something important: the cheap fares exist, but they are outliers. The majority of daily snapshots captured fares at or near $806, meaning $508 represents a genuine opportunity rather than a reliable baseline to plan around.
Because the p25 and the low are identical at $508, the bottom quartile of this dataset is anchored at that single price point — which, given only 12 samples, means a small number of snapshots caught a promotional or off-peak window. Historically on long-haul Pacific routes, fare softening tends to occur either well in advance (roughly 3–5 months out for peak travel periods) or in a narrow last-minute window when seats go unsold. Neither pattern can be confirmed from this dataset alone, but the existence of $508 fares suggests at least one such window was captured. Setting a fare alert and checking prices across a multi-week horizon gives you the best chance of landing near that lower tier.
No dominant carrier is identifiable from this data, so carrier-specific strategies aren't supportable here. One honest caveat worth underscoring: 12 snapshots is a thin sample. The $508 low could reflect a flash sale, an error fare, or a one-off promotional window that won't recur predictably. Use $806 as your realistic planning figure, treat anything under $650 as a strong deal worth acting on, and don't hold out indefinitely expecting $508 to reappear.
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AI-authored from this route's 30-day price index. Article last regenerated Jun 13, 2026. Fares shift continuously — confirm at booking.