Cheapest one-way flights from Philadelphia to Lisbon in May from $406

Best time to book flights for Philadelphia (PHL) to Lisbon (LIS) flights at AirHint

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

One-Way flights

09 May Frontier Airlines
25 May Air Canada
21 May Spirit Airlines
22 May Frontier Airlines
21 May Iberia direct
10 May TAP
09 May Iberia direct
10 May American Airlines direct
25 May British Airways direct
22 May Iberia direct

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

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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