Chicago → Seoul flights

Target $600–$700 for Chicago–Seoul — budget $682 as your baseline

Key takeaways

• Median fare is $682 across 17 sampled days — treat this as your realistic baseline, not a worst-case figure.
• Bottom-quartile fares cluster around $598–$600, meaning roughly one in four snapshots caught a fare at or below that level — a credible target for patient bookers.
• The low observed was $593 and the high $823, a spread of 39% — wide enough that timing and flexibility meaningfully affect what you pay.
• The $600–$697 band (p25–p75) captured the middle half of all observed fares, suggesting this corridor is where most realistic booking windows land.
• Note: this analysis rests on 17 snapshots, just under the 30-day ideal, so treat the outer bounds ($593 and $823) as directional rather than statistically firm.

30-day price trend

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

The full picture

Chicago O'Hare to Seoul Incheon is a long-haul transpacific route where fares rarely behave like a domestic hop — and the data reflects that. The $593–$823 range, with a 39% spread, tells us this is a route with genuine price variability. That's actually good news for flexible travelers: the gap between a bottom-quartile fare (~$598) and a top-quartile fare (~$697) is roughly $100, and pushing into the upper tail near $823 is avoidable with reasonable lead time. The median of $682 is your anchor; if you're seeing fares comfortably below that, the data suggests you're looking at a legitimately favorable window.

On booking horizon, transpacific routes like ORD–ICN typically soften in the 6–10 week window ahead of departure as carriers adjust unsold inventory, though this dataset does not include timestamp-to-departure data that would let us confirm that pattern directly for this specific route. What the data does show is that fares under $620 appeared — meaning deals exist, they're just not the norm. Monitoring fares and setting a price alert around $620–$640 gives you a reasonable trigger that sits meaningfully below the median without chasing the statistical floor.

No dominant carrier signal emerged from this dataset, so carrier-specific booking tactics aren't warranted here. The honest caveat: 17 snapshots is a workable but thin sample. The $593 low and $823 high are real observed fares, but with a larger dataset those bounds could shift in either direction. Use the $598–$697 interquartile range as your decision framework — fares in that band are normal, fares below $620 are worth acting on, and fares above $750 are a signal to wait if your schedule allows.

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