Cheapest return flights from Boston to Philadelphia in January from $178
AirHint found the following cheapest return flights from Boston (BOS) to Philadelphia (PHL) in January 2025 (see full year).
Return flights
| 30 Jan - 01 Feb | Frontier Airlines | direct | |
| 31 Jan - 31 Jan | Delta | direct | |
| 24 Jan - 24 Jan | Frontier Airlines |
Also check the deals for one-way flights from Boston to Philadelphia in January.
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.
