Fare anomaly · SEA → ICN

Cheap flights from Seattle to Seoul

AeroQuant™ currently models a retail fare of $1,140 against a lowest legal arbitrage fare of $645 for 2026-12-03 (economy, per traveler): a 43.4% spread.

SAVE $495 (43.4%)

Winning strategy: POS Currency Arbitrage

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How SEA–ICN gets cheaper

Regional point-of-sale pricing: the same flight is often filed at different tariffs in different countries and currencies.
Split-hub routing: pricing SEA to a competitive hub and that hub to ICN as separate tickets can undercut the nonstop.
Timing: discounted fare buckets typically reopen on a revenue-management schedule; the scan shows the window for this route.