Cheapest one-way flights from Philadelphia to Boston in September from $63

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

One-Way flights

04 Sep Delta direct
09 Sep Delta direct

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

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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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