Seattle → Osaka flights

Median $588 to Osaka — but fares can spike past $1,000

Key takeaways

• Median round-trip fare over the sample window is $588
• Bottom quartile (25% of snapshots) came in at or below $529
• Top quartile jumps sharply to $1,068, matching the observed high
• Spread of 163% between low and high signals real volatility on this route
• Sample is thin at just 15 snapshots, so treat patterns as directional, not definitive

30-day price trend

See full numbers and stats on the SEA → KIX price history page.

The full picture

The Seattle-to-Osaka route shows a wide pricing range, from a low of $406 up to $1,068, with a median of $588. That 163% spread is well above what we'd consider a stable-fare route, meaning the price you find on any given day matters a lot — this isn't a route where you can assume fares hover near the median. The gap between the 25th percentile ($529) and the 75th percentile ($1,068) is particularly telling: half the observed fares cluster in a relatively tight band near the median, but the upper quartile essentially doubles the lower one, suggesting occasional premium fare classes or sold-out cheap inventory driving the high end.

Given this volatility, the practical takeaway is to treat any fare near or below the $529–$588 range as a good find worth booking rather than waiting for something better. With only 15 snapshots in this sample, we can't confidently map out a booking-window curve (e.g., whether prices reliably soften at 60 days out versus 21 days out) — the data simply doesn't have enough density across the horizon to support that kind of claim. What we can say is that the low end of the range ($406) demonstrates genuinely cheap fares do appear on this route periodically, so patience and monitoring can pay off, but the high end shows the cost of waiting too long or flying during constrained inventory periods.

No dominant carrier was identifiable in the data, and no reliable day-of-week pattern emerged from this sample size. The honest caveat here is significant: with just 15 daily snapshots, this analysis reflects a narrow slice of pricing history, not a full seasonal cycle. Treat the median and quartile figures as a rough guide to what's achievable rather than a guarantee, and prioritize booking when you see fares at or below the $529–$588 range rather than gambling on further drops.

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