Cheap flights from Washington to Sintra

View AU$532 flight on Sun, 17 Aug. 2025Opens in a new window

Popular airlines from Washington to Sintra

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Cheap Flights from Washington (WAS) to Sintra (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.

TAP Portugal
Thu, 23 Oct. - Sun, 14 Dec.
IAD
Washington
LIS
Lisbon
AU$985 Return, found 2 days ago
AU$985
Return
found 2 days ago
Select TAP Portugal flight, departing Thu, 23 Oct. from Washington to Lisbon, returning Sun, 14 Dec., priced at AU$985 found 2 days ago
Turkish Airlines
Mon, 1 Sep. - Mon, 8 Sep.
IAD
Washington
LIS
Lisbon
AU$1,076 Return, found 6 days ago
AU$1,076
Return
found 6 days ago
Select Turkish Airlines flight, departing Mon, 1 Sep. from Washington to Lisbon, returning Mon, 8 Sep., priced at AU$1,076 found 6 days ago
Aer Lingus
Mon, 1 Sep. - Mon, 8 Sep.
IAD
Washington
LIS
Lisbon
AU$1,145 Return, found 6 days ago
AU$1,145
Return
found 6 days ago
Select Aer Lingus flight, departing Mon, 1 Sep. from Washington to Lisbon, returning Mon, 8 Sep., priced at AU$1,145 found 6 days ago
United
Thu, 23 Oct. - Sun, 14 Dec.
IAD
Washington
LIS
Lisbon
AU$1,206 Return, found 2 days ago
AU$1,206
Return
found 2 days ago
Select United flight, departing Thu, 23 Oct. from Washington to Lisbon, returning Sun, 14 Dec., priced at AU$1,206 found 2 days ago
Delta
Thu, 23 Oct. - Sun, 14 Dec.
BWI
Baltimore
LIS
Lisbon
AU$1,225 Return, found 2 days ago
AU$1,225
Return
found 2 days ago
Select Delta flight, departing Thu, 23 Oct. from Baltimore to Lisbon, returning Sun, 14 Dec., priced at AU$1,225 found 2 days ago
Virgin Atlantic
Thu, 23 Oct. - Sun, 14 Dec.
DCA
Washington
LIS
Lisbon
AU$1,225 Return, found 2 days ago
AU$1,225
Return
found 2 days ago
Select Virgin Atlantic flight, departing Thu, 23 Oct. from Washington to Lisbon, returning Sun, 14 Dec., priced at AU$1,225 found 2 days ago

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

November is typically the cheapest month to fly

From AU$588 - AU$1,448 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.