Popular airlines from Seattle to Sintra-Cascais Natural Park
Jetstar
Qantas Airways
Virgin Australia
Scoot
American Airlines
Emirates
United
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Cheap Flights from Seattle (SEA) 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.
Find the cheapest month to fly from Seattle (SEA) to Lisbon (LIS)
February is typically the cheapest month to fly
From AU$723 - AU$1,645 per traveller.
Graph displaying average flight prices per month
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