Cheapest one-way flights from Philadelphia to Boston in May from $50

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
07 May Spirit Airlines
08 May Frontier Airlines
01 May Frontier Airlines
18 May Spirit Airlines
22 May jetBlue direct
08 May jetBlue direct
18 May Delta direct
01 May jetBlue direct
26 May Delta 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.

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