Cheapest return flights from Boston to Philadelphia in August from $98

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

Return flights

07 Aug - 10 Aug Frontier Airlines direct
07 Aug - 09 Aug Frontier Airlines direct
21 Aug - 26 Aug Frontier Airlines direct
17 Aug - 18 Aug Frontier Airlines
01 Aug - 03 Aug Spirit Airlines
07 Aug - 07 Aug Frontier Airlines direct
17 Aug - 18 Aug Frontier Airlines direct
01 Aug - 03 Aug jetBlue direct
09 Aug - 16 Aug jetBlue direct
21 Aug - 21 Aug Frontier Airlines
12 Aug - 01 Sep Spirit Airlines
14 Aug - 01 Sep Spirit Airlines
14 Aug - 03 Sep Spirit Airlines
21 Aug - 01 Sep Spirit Airlines
21 Aug - 10 Sep Spirit Airlines
21 Aug - 05 Sep Spirit Airlines
21 Aug - 03 Sep Spirit Airlines
20 Aug - 01 Sep Spirit Airlines
20 Aug - 05 Sep Spirit Airlines
20 Aug - 03 Sep Spirit Airlines

Also check the deals for one-way 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.

Book a cheap hotel in Philadelphia

Cheap car rent in Philadelphia

Feel free to contact us with any feedback or request another flight research.