Cheapest return flights from Philadelphia to Brussels in December from $501

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

Return flights

08 Dec - 16 Dec United
11 Dec - 18 Dec United
11 Dec - 21 Dec British Airways
17 Dec - 10 Jan Iberia
20 Dec - 10 Jan Iberia
22 Dec - 29 Dec Aer Lingus
24 Dec - 30 Dec Finnair
19 Dec - 27 Dec Spirit Airlines
25 Dec - 02 Jan United

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

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