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SFO–Seoul fares show a $321 median over 30 days, with a wide spread — watch for dips toward $254 and below.
Written from this route's 30-day price index (30 daily samples). Article last regenerated Oct 10, 2026.
See full numbers and stats on the SFO → ICN price history page.
The SFO–Seoul route shows real price variability: a 96% spread between the $179 low and $351 high is wide enough that "when you book" matters more than usual on this itinerary. The median of $321 is a fair planning number, but the fact that the 25th percentile sits at $254 tells us a meaningful chunk of fares — roughly a quarter of the days sampled — came in well under that median. That's a gap worth chasing if your travel dates are flexible.
We don't have booking-window data (how far in advance each fare was purchased relative to departure), so we can't responsibly say whether 3 weeks out beats 3 months out for this route — only that across the 30 days we sampled, cheapest-fare snapshots ranged widely. What we can say is that if you're seeing a quoted fare above $338, you're in the top quartile of what's been observed recently, and waiting or checking alternate dates may pay off. Conversely, anything at or below $254 is already beating three-quarters of the sampled fares, which is a solid signal to book rather than hold out for more.
We don't have enough signal in this dataset to identify a dominant carrier or confirm day-of-week patterns, so we won't speculate on either. The honest caveat: 30 daily snapshots of cached fares is a decent sample, but it reflects search-cache pricing, not a live booking-conversion dataset — actual bookable fares on any given day could differ from what was cached. Treat the $254–$338 range as your working target zone, and view $179 as an achievable but not guaranteed low.
Why we regenerated this article: Bottom quartile ↓ 22% ($324 → $254). We only rewrite when the underlying price index actually moves — stable weeks keep the previous take.
AI-authored from this route's 30-day price index. Article last regenerated Oct 10, 2026. Fares shift continuously — confirm at booking.