Cheapest one-way flights from Philadelphia to Lisbon in May from $300

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

One-Way flights

05 May Air Canada
04 May Aer Lingus
11 May Aer Lingus
06 May Frontier Airlines
13 May Aer Lingus
01 May Frontier Airlines
21 May Spirit Airlines
28 May Spirit Airlines
04 May Finnair direct
27 May jetBlue

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

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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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