Cheapest one-way flights from Boston to Philadelphia in August from $29

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

One-Way flights

05 Aug Frontier Airlines direct
10 Aug Frontier Airlines direct
17 Aug Frontier Airlines direct
21 Aug Frontier Airlines direct
07 Aug Frontier Airlines direct
14 Aug Frontier Airlines direct
12 Aug Frontier Airlines direct
03 Aug Frontier Airlines direct
24 Aug Frontier Airlines direct
28 Aug Frontier Airlines direct

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

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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