Cheapest return flights from Philadelphia to Boston in December from $171

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

Return flights

21 Dec - 04 Jan American Airlines direct
22 Dec - 29 Dec jetBlue direct
24 Dec - 29 Dec jetBlue direct
31 Dec - 02 Jan jetBlue direct
17 Dec - 03 Jan American Airlines direct
30 Dec - 01 Jan American Airlines direct
25 Dec - 28 Dec Delta direct
26 Dec - 29 Dec Delta direct
26 Dec - 28 Dec Delta direct
29 Dec - 31 Dec Delta direct
30 Dec - 31 Dec Frontier Airlines
23 Dec - 27 Dec American Airlines direct
16 Dec - 29 Dec jetBlue direct
30 Dec - 07 Jan Spirit Airlines
23 Dec - 07 Jan Spirit Airlines
30 Dec - 31 Dec jetBlue direct
30 Dec - 09 Jan Spirit Airlines
30 Dec - 12 Jan Spirit Airlines
30 Dec - 17 Jan Spirit Airlines
23 Dec - 09 Jan Spirit Airlines

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

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