Cheapest return flights from Boston to Philadelphia in January from 100€

AirHint found the following cheapest return flights from Boston (BOS) to Philadelphia (PHL) in January 2026 (see full year).

Return flights

12 Jan - 11 Feb Frontier Airlines
07 Jan - 10 Jan Delta direct
12 Jan - 15 Jan jetBlue direct
11 Jan - 16 Jan Delta direct
01 Jan - 05 Jan Delta direct
02 Jan - 05 Jan Delta direct
17 Jan - 19 Jan Delta direct
16 Jan - 18 Jan Delta direct
16 Jan - 23 Jan Delta direct
30 Jan - 01 Feb Spirit Airlines
30 Jan - 11 Feb Spirit Airlines
31 Jan - 11 Feb Spirit Airlines
16 Jan - 19 Jan Delta direct
17 Jan - 23 Jan Spirit Airlines
17 Jan - 01 Feb Spirit Airlines
12 Jan - 01 Feb Spirit Airlines
15 Jan - 01 Feb Spirit Airlines
31 Jan - 21 Feb Spirit Airlines
16 Jan - 01 Feb Spirit Airlines
11 Jan - 01 Feb Spirit Airlines

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

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