Cheapest one-way flights from Philadelphia to Lisbon in September from 273€

AirHint found the following cheapest one-way flights from Philadelphia (PHL) to Lisbon (LIS) in September 2025 (see full year).

One-Way flights

04 Sep Spirit Airlines
23 Sep Spirit Airlines
30 Sep Spirit Airlines
24 Sep Spirit Airlines
07 Sep Frontier Airlines
23 Sep Iberia direct
24 Sep British Airways direct
30 Sep British Airways direct
04 Sep British Airways direct
07 Sep British Airways direct

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

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.

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