AirHint found the following cheapest one-way flights from Philadelphia (PHL) to Lisbon (LIS) in March 2025 (see full year).
21 Mar | Frontier Airlines | ||
21 Mar | British Airways | direct |
Also check the deals for return flights from Philadelphia to Lisbon in March.
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.