Cheapest return flights from Boston to Philadelphia in May from 120€

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

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

Return flights

01 May - 04 May Frontier Airlines
26 May - 04 Jun jetBlue direct
12 May - 19 May Frontier Airlines
17 May - 19 May Frontier Airlines
17 May - 18 May Frontier Airlines
02 May - 04 May Frontier Airlines
09 May - 11 May Frontier Airlines
16 May - 19 May Frontier Airlines
16 May - 21 May Frontier Airlines
15 May - 19 May Frontier Airlines
16 May - 20 May Frontier Airlines

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