Cheapest one-way flights from Philadelphia to Boston in May from $62

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

One-Way flights

13 May jetBlue direct
02 May jetBlue direct
03 May jetBlue direct
15 May Delta direct
14 May Delta direct
20 May American Airlines direct
17 May Delta direct
11 May Frontier Airlines
08 May Spirit Airlines
11 May Delta direct

Also check the deals for return flights from Philadelphia to Boston in May.

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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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