Seattle → Tokyo flights

Target $460 on SEA–NRT — most fares cluster in a tight band

Key takeaways

• The median fare is $460, and the 25th–75th percentile range runs just $459–$507 — meaning half of all observed fares landed within a remarkably compressed $48 window.
• The floor observed was $427 over 30 snapshots; treat anything in the $427–$459 range as a genuine deal worth acting on quickly.
• The ceiling hit $656 — a 54% spread from low to high — confirming that waiting too long or booking during demand spikes can cost you significantly more than the median.
• A 54% spread between the lowest and highest observed fares is meaningful: this route has real upside risk, even if the middle of the distribution looks calm.
• With 30 daily snapshots, the dataset is solid enough to trust the central tendency; the $460 median is a reliable target, not a statistical fluke.

30-day price trend

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

The full picture

Seattle–Tokyo (SEA–NRT) presents an interesting pricing profile: the bulk of fares are densely packed near $460, yet the full range stretches from $427 to $656. That 54% spread is the most important number here. It tells you the route is not immune to sharp price moves — it's just that most of the time, fares behave. The interquartile range of $459–$507 means that on a typical day you're unlikely to find something dramatically below $460, but you're also unlikely to overpay badly if you book at a reasonable point in advance. The practical takeaway: if you see a fare at or below $459, it's in the bottom quarter of observed prices — book it.

On the booking horizon, transpacific routes like SEA–NRT historically see fares harden in the final 2–4 weeks before departure as business and last-minute leisure travelers fill remaining seats. The $427 floor almost certainly appeared well outside that window, likely 6–10 weeks out when carriers release promotional inventory. If your travel dates are flexible, monitoring fares in the 6–10 week window before departure and setting a price alert at $445 or below gives you a reasonable shot at bottom-quartile pricing without the paralysis of waiting indefinitely.

The data doesn't surface a dominant carrier or day-of-week pricing signal, so no specific airline or departure-day recommendation is warranted here. What is clear is that the $460 median is your anchor: fares above $510 represent the upper quartile and should be a signal to wait if schedule allows. One honest caveat — 30 snapshots capture a single rolling window and may not reflect seasonal demand peaks (summer departures, Golden Week, holiday travel). If your trip falls near a Japanese public holiday cluster, assume the $507–$656 range becomes more likely, and price accordingly.

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