AirHint found the following cheapest one-way flights from Boston (BOS) to Philadelphia (PHL) in March 2026 (see full year).
One-Way flights
| 13 Mar | jetBlue | direct | |
| 12 Mar | American Airlines | direct | |
| 07 Mar | Spirit Airlines | ||
| 19 Mar | Delta | direct | |
| 21 Mar | Spirit Airlines |
Also check the deals for return flights from Boston to Philadelphia in March.
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