Cheapest return flights from Philadelphia to Lisbon in April from 520€

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

Return flights

12 Apr - 21 Apr Frontier Airlines
15 Apr - 21 Apr Spirit Airlines
19 Apr - 30 Apr Finnair
19 Apr - 30 Apr British Airways direct
15 Apr - 22 Apr Finnair
12 Apr - 21 Apr Iberia direct
15 Apr - 22 Apr British Airways direct
19 Apr - 28 Apr British Airways direct
06 Apr - 21 Apr Aer Lingus
17 Apr - 20 Apr Frontier Airlines

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

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