Cheapest return flights from Philadelphia to Lisbon in August from $1054

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

14 Aug - 21 Aug United
22 Aug - 02 Sep Aer Lingus
30 Aug - 07 Sep TAP
24 Aug - 31 Aug United
04 Aug - 11 Aug United
22 Aug - 02 Sep Iberia direct
08 Aug - 17 Aug Sun Country Airlines
30 Aug - 07 Sep American Airlines direct
08 Aug - 17 Aug Finnair 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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