Cheapest return flights from Philadelphia to Boston in January from $111

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

Return flights

12 Jan - 14 Jan Spirit Airlines
12 Jan - 14 Jan jetBlue direct
16 Jan - 19 Jan jetBlue direct
30 Jan - 01 Feb Delta direct
08 Jan - 11 Jan Delta direct
16 Jan - 17 Jan Spirit Airlines
08 Jan - 09 Jan Spirit Airlines
08 Jan - 17 Jan Spirit Airlines
08 Jan - 22 Jan Spirit Airlines
02 Jan - 07 Jan American Airlines direct
11 Jan - 17 Jan Spirit Airlines
25 Jan - 09 Feb Spirit Airlines
25 Jan - 15 Feb Spirit Airlines
25 Jan - 12 Feb Spirit Airlines
25 Jan - 13 Feb Spirit Airlines
25 Jan - 14 Feb Spirit Airlines

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

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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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