AirHint found the following cheapest return flights from Philadelphia (PHL) to Lisbon (LIS) in February 2026 (see full year).

Return flights

04 Feb - 10 Feb	Frontier Airlines
04 Feb - 11 Feb	Frontier Airlines
26 Feb - 04 Mar	Frontier Airlines
01 Feb - 07 Feb	Spirit Airlines
27 Feb - 05 Mar	Frontier Airlines
04 Feb - 12 Feb	Frontier Airlines
27 Feb - 05 Mar	Iberia	direct
26 Feb - 04 Mar	Iberia	direct
04 Feb - 11 Feb	Iberia	direct
04 Feb - 12 Feb	Iberia	direct
04 Feb - 10 Feb	Finnair	direct

Also check the deals for one-way flights from Philadelphia to Lisbon in February.

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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Cheapest return flights from Philadelphia to Lisbon in February from $624

Return flights