Philadelphia (PHL) to Lisbon (LIS) flight deal in economy from $741

Saturday, September 12th, 2026

4 round-trip options

Returning
Thu, Sep 17, 20265 Day Trip
$1,849 USD
Returning
Sat, Sep 19, 20267 Day Trip
$1,472 USD
Returning
Sun, Sep 20, 20268 Day Trip
$1,476 USD
Returning
Mon, Sep 21, 20269 Day Trip
$1,419 USD