Cheap flights from Philadelphia to Sintra-Cascais Natural Park

View AU$624 flight on Tue, 21 Apr. 2026Opens in a new window

Popular airlines from Philadelphia to Sintra-Cascais Natural Park

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    Qantas Airways

  • Virgin Australia

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  • Scoot

    Scoot

  • American Airlines

    American Airlines

  • Emirates

    Emirates

  • United

    United

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Cheap Flights from Philadelphia (ILG) to Sintra-Cascais Natural Park (LIS)

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

Aer Lingus
Mon, 1 Sep. - Tue, 9 Sep.
PHL
Philadelphia
LIS
Lisbon
AU$1,098 Return, found 6 days ago
AU$1,098
Return
found 6 days ago
Select Aer Lingus flight, departing Mon, 1 Sep. from Philadelphia to Lisbon, returning Tue, 9 Sep., priced at AU$1,098 found 6 days ago
Delta
Mon, 1 Sep. - Tue, 9 Sep.
PHL
Philadelphia
LIS
Lisbon
AU$1,297 Return, found 6 days ago
AU$1,297
Return
found 6 days ago
Select Delta flight, departing Mon, 1 Sep. from Philadelphia to Lisbon, returning Tue, 9 Sep., priced at AU$1,297 found 6 days ago
Delta
Mon, 1 Sep. - Tue, 9 Sep.
PHL
Philadelphia
LIS
Lisbon
AU$1,337 Return, found 6 days ago
AU$1,337
Return
found 6 days ago
Select Delta flight, departing Mon, 1 Sep. from Philadelphia to Lisbon, returning Tue, 9 Sep., priced at AU$1,337 found 6 days ago
Aer Lingus
Mon, 1 Sep. - Tue, 9 Sep.
PHL
Philadelphia
LIS
Lisbon
AU$1,390 Return, found 6 days ago
AU$1,390
Return
found 6 days ago
Select Aer Lingus flight, departing Mon, 1 Sep. from Philadelphia to Lisbon, returning Tue, 9 Sep., priced at AU$1,390 found 6 days ago
JetBlue Airways
Mon, 1 Sep. - Tue, 9 Sep.
PHL
Philadelphia
LIS
Lisbon
AU$1,404 Return, found 6 days ago
AU$1,404
Return
found 6 days ago
Select JetBlue Airways flight, departing Mon, 1 Sep. from Philadelphia to Lisbon, returning Tue, 9 Sep., priced at AU$1,404 found 6 days ago

Find the cheapest month to fly from Philadelphia (PHL) to Lisbon (LIS)

November is typically the cheapest month to fly

From AU$702 - AU$1,859 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.