Washington → Seoul flights

Washington–Seoul fares center near $694, with upside near $773

Key takeaways

• Median fare sits at $694 across the sampled snapshots
• Bottom quartile fares come in at $694 or below, with the cheapest observed at $565
• Top quartile fares climb to $747+, topping out at $773
• Spread of 37% between low and high suggests meaningful price swings on this route
• Sample size of just 12 days limits confidence in any fine-grained timing advice

30-day price trend

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

The full picture

Fares between Washington and Seoul in this sample ranged from $565 to $773, a 37% spread that points to real volatility rather than a tightly-clustered price. The median of $694 is a reasonable anchor for budgeting, but the bottom quartile ($694 and below) shows that a meaningful share of fares did come in at or under the median, while the top quartile pushed up to $747–$773. This isn't a route where you can expect prices to sit in a narrow band — shoppers should expect some genuine variance snapshot to snapshot.

With only 12 days of data, we can't responsibly point to a specific booking window where prices reliably soften — the sample is too thin to separate a real trend from noise. What we can say is that fares as low as $565 did appear within the window, so prices well under the median are achievable, not hypothetical. Travelers with flexibility should treat $694 as a fair-value target and view anything near or below $650 as a good deal worth acting on quickly, given the spread suggests such fares don't necessarily linger.

The data available doesn't surface a dominant carrier or clear day-of-week pattern for this route, so we can't make claims about specific airlines or weekday effects here — doing so would be speculation beyond what the snapshots show. The honest caveat: a 12-day sample is small, and both the low ($565) and high ($773) ends could be outliers rather than representative bounds. Treat this as a directional read on pricing, not a precise forecast, and re-check closer to your travel dates if possible.

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