AirHint found the following cheapest one-way flights from Philadelphia (PHL) to Seoul (ICN) in December 2025 (see full year).
One-Way flights
| 01 Dec | Delta | ||
| 03 Dec | American Airlines | ||
| 29 Dec | United | ||
| 11 Dec | Air Canada | ||
| 13 Dec | Korean Air | ||
| 15 Dec | Delta | ||
| 14 Dec | Delta | ||
| 21 Dec | Frontier Airlines | ||
| 17 Dec | Frontier Airlines | ||
| 20 Dec | Delta |
Also check the deals for return flights from Philadelphia to Seoul in December.
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The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.
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