Cheapest return flights from Philadelphia to Boston in May from $138

Best time to book flights for Philadelphia (PHL) to Boston (BOS) flights at AirHint

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

Return flights

24 May - 26 May jetBlue direct
03 May - 06 May Delta direct
02 May - 05 May jetBlue direct
15 May - 19 May Delta direct
01 May - 04 May American Airlines direct
16 May - 19 May Delta direct
23 May - 26 May American Airlines direct
29 May - 01 Jun jetBlue direct
30 May - 01 Jun jetBlue direct
04 May - 08 May American Airlines direct
04 May - 09 May jetBlue direct
30 May - 04 Jun Spirit Airlines
03 May - 05 May Spirit Airlines
30 May - 06 Jun Spirit Airlines

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

Skyscanner

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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