Cheapest return flights from Philadelphia to Boston in May from $123

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

Return flights

01 May - 03 May jetBlue direct
08 May - 10 May jetBlue direct
02 May - 03 May jetBlue direct
01 May - 04 May jetBlue direct
09 May - 10 May jetBlue direct
21 May - 26 May Delta direct
30 May - 04 Jun Delta direct
15 May - 22 May Delta direct
21 May - 25 May American Airlines direct
22 May - 27 May Delta direct
22 May - 26 May Delta direct
21 May - 09 Jun Spirit Airlines
21 May - 08 Jun Spirit Airlines
25 May - 09 Jun Spirit Airlines
25 May - 08 Jun Spirit Airlines
25 May - 15 Jun Spirit Airlines
25 May - 14 Jun Spirit Airlines

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

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