Flights to Sintra-Cascais Natural Park from Washington - ￥56,830

View ￥56,830 flight on Wed, Sep 10, 2025Opens in a new window

Popular airlines from Washington to Sintra-Cascais Natural Park

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Cheap Flights from Washington to Sintra-Cascais Natural Park (WAS-LIS)

Prices were available within the past 7 days and start at ￥56,830 for one-way flights and ￥81,940 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Scandinavian Airlines
Thu, Oct 30 - Sun, Nov 9
IAD
Washington
LIS
Lisbon
￥81,940 Roundtrip, found 3 days ago
￥81,940
Roundtrip
found 3 days ago
Select Scandinavian Airlines flight, departing Thu, Oct 30 from Washington to Lisbon, returning Sun, Nov 9, priced at ￥81,940 found 3 days ago
Turkish Airlines
Thu, Oct 23 - Wed, Oct 29
IAD
Washington
LIS
Lisbon
￥96,840 Roundtrip, found 2 days ago
￥96,840
Roundtrip
found 2 days ago
Select Turkish Airlines flight, departing Thu, Oct 23 from Washington to Lisbon, returning Wed, Oct 29, priced at ￥96,840 found 2 days ago
United
Wed, Dec 3 - Fri, Dec 19
IAD
Washington
LIS
Lisbon
￥100,150 Roundtrip, found 6 days ago
￥100,150
Roundtrip
found 6 days ago
Select United flight, departing Wed, Dec 3 from Washington to Lisbon, returning Fri, Dec 19, priced at ￥100,150 found 6 days ago
United
Mon, Dec 1 - Thu, Dec 18
IAD
Washington
LIS
Lisbon
￥101,290 Roundtrip, found 5 days ago
￥101,290
Roundtrip
found 5 days ago
Select United flight, departing Mon, Dec 1 from Washington to Lisbon, returning Thu, Dec 18, priced at ￥101,290 found 5 days ago
Air Canada
Tue, Dec 2 - Thu, Dec 18
IAD
Washington
LIS
Lisbon
￥101,290 Roundtrip, found 5 days ago
￥101,290
Roundtrip
found 5 days ago
Select Air Canada flight, departing Tue, Dec 2 from Washington to Lisbon, returning Thu, Dec 18, priced at ￥101,290 found 5 days ago
American Airlines
Mon, Dec 1 - Thu, Dec 18
IAD
Washington
LIS
Lisbon
￥102,680 Roundtrip, found 5 days ago
￥102,680
Roundtrip
found 5 days ago
Select American Airlines flight, departing Mon, Dec 1 from Washington to Lisbon, returning Thu, Dec 18, priced at ￥102,680 found 5 days ago

Find the cheapest month to fly from Washington (WAS) to Lisbon (LIS)

November is typically the cheapest month to fly

From ￥56,175 - ￥138,265 per traveler.

Graph displaying average flight prices per month

*Available to Expedia members.