Cheap flights from Washington to Serra da Estrela

View AU$409 flight on Tue, 5 Aug. 2025Opens in a new window

Popular airlines from Washington to Serra da Estrela

  • Delta

    Delta

  • United

    United

  • American Airlines

    American Airlines

  • Air Canada

    Air Canada

  • Virgin Atlantic

    Virgin Atlantic

  • British Airways

    British Airways

  • KLM

    KLM

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Cheap Flights from Washington (WAS) to Serra da Estrela (OPO)

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 3 days ago
AU$985
Return
found 3 days ago
Select TAP Portugal flight, departing Thu, 23 Oct. from Washington to Lisbon, returning Sun, 14 Dec., priced at AU$985 found 3 days ago
United
Sun, 7 Sep. - Sun, 14 Sep.
DCA
Washington
OPO
Porto
AU$1,088 Return, found 1 day ago
AU$1,088
Return
found 1 day ago
Select United flight, departing Sun, 7 Sep. from Washington to Porto, returning Sun, 14 Sep., priced at AU$1,088 found 1 day ago
Turkish Airlines
Thu, 23 Oct. - Sun, 14 Dec.
IAD
Washington
LIS
Lisbon
AU$1,110 Return, found 3 days ago
AU$1,110
Return
found 3 days ago
Select Turkish Airlines flight, departing Thu, 23 Oct. from Washington to Lisbon, returning Sun, 14 Dec., priced at AU$1,110 found 3 days ago
Delta
Thu, 23 Oct. - Sun, 14 Dec.
BWI
Baltimore
LIS
Lisbon
AU$1,225 Return, found 3 days ago
AU$1,225
Return
found 3 days ago
Select Delta flight, departing Thu, 23 Oct. from Baltimore to Lisbon, returning Sun, 14 Dec., priced at AU$1,225 found 3 days ago
Virgin Atlantic
Thu, 23 Oct. - Sun, 14 Dec.
DCA
Washington
LIS
Lisbon
AU$1,225 Return, found 3 days ago
AU$1,225
Return
found 3 days ago
Select Virgin Atlantic flight, departing Thu, 23 Oct. from Washington to Lisbon, returning Sun, 14 Dec., priced at AU$1,225 found 3 days ago
Virgin Atlantic
Thu, 23 Oct. - Sun, 14 Dec.
DCA
Washington
LIS
Lisbon
AU$1,225 Return, found 3 days ago
AU$1,225
Return
found 3 days ago
Select Virgin Atlantic flight, departing Thu, 23 Oct. from Washington to Lisbon, returning Sun, 14 Dec., priced at AU$1,225 found 3 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.