Cheapest return flights from Philadelphia to Copenhagen in December from $570

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

Return flights

08 Dec - 15 Dec jetBlue
24 Dec - 17 Jan Air Canada
23 Dec - 17 Jan British Airways
22 Dec - 17 Jan British Airways
23 Dec - 07 Jan British Airways
10 Dec - 20 Dec Frontier Airlines
10 Dec - 03 Jan Spirit Airlines
19 Dec - 10 Jan Frontier Airlines

Also check the deals for one-way flights from Philadelphia to Copenhagen in December.

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