Cheapest return flights from Philadelphia to Lisbon in May from 780€

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

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

Return flights

20 May - 28 May Aer Lingus
06 May - 13 May Spirit Airlines
04 May - 14 May TAP
13 May - 20 May TAP
26 May - 30 May Frontier Airlines
06 May - 13 May British Airways direct
13 May - 20 May British Airways direct
05 May - 12 May United
23 May - 26 May Air Canada
23 May - 29 May TAP
25 May - 01 Jun United
30 May - 06 Jun United

Also check the deals for one-way 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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