AirHint found the following cheapest return flights from Philadelphia (PHL) to Seoul (ICN) in April 2026 (see full year).
Return flights
| 09 Apr - 23 Apr | American Airlines | ||
| 12 Apr - 30 Apr | American Airlines | ||
| 02 Apr - 16 Apr | Alaska Airlines | ||
| 06 Apr - 10 Apr | Alaska Airlines |
Also check the deals for one-way flights from Philadelphia to Seoul in April.
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