Cheapest one-way flights from Philadelphia to Boston in December from $81

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

One-Way flights

23 Dec Frontier Airlines
22 Dec jetBlue direct
17 Dec jetBlue direct
25 Dec jetBlue direct
21 Dec jetBlue direct
24 Dec jetBlue direct
23 Dec American Airlines direct
15 Dec Spirit Airlines
26 Dec Delta direct
18 Dec jetBlue direct

Also check the deals for return flights from Philadelphia to Boston 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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