Cheapest return flights from Philadelphia to Lisbon in August from $666

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

Return flights

18 Aug - 27 Aug TAP
26 Aug - 02 Sep TAP
18 Aug - 30 Aug TAP
19 Aug - 27 Aug jetBlue
18 Aug - 26 Aug Aer Lingus
29 Aug - 02 Sep Aer Lingus
31 Aug - 08 Sep TAP
07 Aug - 12 Aug TAP
18 Aug - 26 Aug British Airways direct
11 Aug - 20 Aug Finnair direct
18 Aug - 27 Aug American Airlines direct
19 Aug - 28 Aug American Airlines direct
19 Aug - 27 Aug American Airlines direct
27 Aug - 01 Sep jetBlue
14 Aug - 01 Sep TAP
22 Aug - 01 Sep Aer Lingus
26 Aug - 02 Sep American Airlines direct
31 Aug - 08 Sep British Airways direct
14 Aug - 01 Sep American Airlines direct
27 Aug - 03 Sep United

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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