Cheapest one-way flights from Philadelphia to Boston in May from $54

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

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

One-Way flights

06 May Spirit Airlines
20 May Spirit Airlines
01 May jetBlue direct
05 May jetBlue direct
06 May jetBlue direct
19 May Spirit Airlines
20 May jetBlue direct
07 May jetBlue direct
08 May jetBlue direct
10 May jetBlue direct

Also check the deals for return 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.

Book a cheap hotel in Boston

Cheap car rent in Boston