Chicago → Seoul flights

Budget $459 for Chicago–Seoul — but watch for $286 outliers

Key takeaways

• Median fare is $459, with the middle 50% of observed prices ranging from $446 to $475 — a remarkably tight band.
• The lowest recorded fare was $286 — roughly 38% below median — signaling that genuine sales do surface, though infrequently.
• Spread of 73% between low and high ($286–$495) sounds wide, but the interquartile range is only $29, meaning most days prices barely move.
• $475 is a reasonable ceiling: fares above this put you in the top quartile and likely indicate peak travel periods or late booking.
• Set a price alert at $400 or below — anything in that range represents a meaningful discount relative to the typical going rate.

30-day price trend

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

The full picture

The Chicago O'Hare to Seoul Incheon route shows a split personality in its pricing data. On a day-to-day basis, fares are unusually stable: the interquartile range across 30 snapshots spans just $29 ($446–$475), which tells you that for most of any given month, the market is fairly settled around the $459 median. This isn't a route where checking every morning is likely to yield a dramatically different number — the consistency suggests carriers are managing inventory deliberately, keeping base fares anchored.

The $286 low is the real wildcard. At 38% below median, it almost certainly reflects a flash sale, a seat-filling promotion, or a brief fare war rather than a repeatable booking window. Historical patterns on long-haul transpacific routes generally suggest that fares soften furthest out — often in the 3–5 month advance purchase window — and again in the final 2–3 weeks if seats go unsold, though the latter is a riskier bet on a popular route like ORD–ICN. If you're planning travel, booking when you first see fares in the $420–$450 range is a pragmatic strategy: you're below median without gambling on a sub-$300 outlier that may not reappear.

The data doesn't surface a dominant carrier or clear day-of-week signal, so specific airline or departure-day recommendations aren't supportable here. What the numbers do suggest is that patience and a price alert set around $400 are your best tools. One honest caveat: 30 daily snapshots capture a single month-long window and may reflect one season's demand. Fares on this route can shift materially around Korean holidays, U.S. school breaks, and airline schedule changes — so treat these figures as a calibration baseline, not a guarantee.

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