Cheapest return flights from Philadelphia to Lisbon in August from 545€

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 August 2025 (see full year).

Return flights

13 Aug - 23 Aug Delta
26 Aug - 01 Sep Aer Lingus
13 Aug - 24 Aug Delta
13 Aug - 20 Aug United
13 Aug - 23 Aug British Airways direct
13 Aug - 24 Aug British Airways direct
09 Aug - 16 Aug Delta
05 Aug - 16 Aug Delta
06 Aug - 16 Aug Delta
28 Aug - 07 Sep Aer Lingus
08 Aug - 15 Aug United
05 Aug - 16 Aug British Airways direct
28 Aug - 07 Sep British Airways direct

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

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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