Cheapest return flights from Philadelphia to Seoul in December from $818

AirHint found the following cheapest return flights from Philadelphia (PHL) to Seoul (ICN) in December 2025 (see full year).

Return flights

08 Dec - 23 Dec Air Canada
06 Dec - 22 Dec Air Canada
06 Dec - 21 Dec United
02 Dec - 21 Dec United
08 Dec - 13 Dec Air Canada
10 Dec - 24 Dec United
24 Dec - 06 Jan Delta
18 Dec - 12 Jan Delta
11 Dec - 03 Jan United
25 Dec - 04 Jan United
12 Dec - 03 Jan Air Canada

Also check the deals for one-way 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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