Cheapest return flights from Philadelphia to Lisbon in May from 591€

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

Return flights

04 May - 10 May TAP
04 May - 11 May TAP
01 May - 13 May TAP
19 May - 26 May Aer Lingus
06 May - 13 May Frontier Airlines
23 May - 30 May Spirit Airlines
07 May - 15 May Aer Lingus
20 May - 26 May Austrian Airlines
13 May - 31 May Aer Lingus
14 May - 20 May Aer Lingus
17 May - 14 Jun Aer Lingus
27 May - 18 Jun Spirit Airlines
17 May - 14 Jun British Airways direct
27 May - 18 Jun British Airways direct

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

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