Seattle → Seoul flights

Median sits at $427, but bottom quartile drops to $264

Key takeaways

• $427 median fare over the 30-day sample window
• Bottom quartile (p25 $264) is nearly 40% below the median — real savings exist for patient shoppers
• 71% spread between low and high signals a genuinely volatile route, not a stable one
• Top quartile prices (p75 $442) sit close to the observed high of $449, suggesting the market often trades near its ceiling
• With only 30 snapshots, treat this as a directional read rather than a precise forecast

30-day price trend

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

The full picture

The SEA–ICN route shows a median fare of $427, but that single number hides a lot of movement. Prices in this 30-day sample ranged from a low of $263 to a high of $449 — a 71% spread that puts this route solidly in volatile territory. That gap between p25 ($264) and p75 ($442) tells the real story: roughly a quarter of the days sampled offered fares close to $264, while the majority clustered much closer to the $427–449 range. In practical terms, this isn't a market where the median is a reliable expectation — it's a market with a narrow window of genuinely cheap fares surrounded by a much larger band of pricier ones.

Because our data is a 30-day rolling snapshot rather than a full multi-month booking curve, we can't speak with confidence about how prices behave further out from departure — say, two or three months in advance versus two weeks. What we can say is that if you're seeing a quote near or below $300, that's solidly in bottom-quartile territory for this route and worth acting on rather than waiting for something better, since the data shows most days land much higher. Conversely, a quote near $440–449 reflects the top of the range this route has shown recently.

We don't have reliable carrier-level detail in this dataset, so we can't attribute the volatility to a specific airline's pricing behavior, and day-of-week patterns aren't visible in the snapshots we have. The honest takeaway: this route's pricing swings meaningfully, the median is a reasonable anchor, but the real opportunity is catching one of the days near the $264–300 range when it appears. Treat this analysis as a snapshot of recent conditions, not a guarantee of future fares — with 30 data points, we're seeing a trend, not a certainty.

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