Flights to Costa de Prata from Washington - ￥54,380

View ￥54,380 flight on Sat, Sep 20, 2025Opens in a new window

Popular airlines from Washington to Costa de Prata

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Cheap Flights from Washington to Costa de Prata (WAS-OPO)

Prices were available within the past 7 days and start at ￥54,380 for one-way flights and ￥107,810 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Thu, Sep 4 - Sat, Sep 20
IAD
Washington
OPO
Porto
￥107,810 Roundtrip, found 5 days ago
￥107,810
Roundtrip
found 5 days ago
Select United flight, departing Thu, Sep 4 from Washington to Porto, returning Sat, Sep 20, priced at ￥107,810 found 5 days ago
Swiss International Air Lines
Thu, Sep 4 - Sat, Sep 20
IAD
Washington
OPO
Porto
￥110,610 Roundtrip, found 5 days ago
￥110,610
Roundtrip
found 5 days ago
Select Swiss International Air Lines flight, departing Thu, Sep 4 from Washington to Porto, returning Sat, Sep 20, priced at ￥110,610 found 5 days ago
Lufthansa
Thu, Sep 4 - Sat, Sep 20
IAD
Washington
OPO
Porto
￥110,950 Roundtrip, found 5 days ago
￥110,950
Roundtrip
found 5 days ago
Select Lufthansa flight, departing Thu, Sep 4 from Washington to Porto, returning Sat, Sep 20, priced at ￥110,950 found 5 days ago
Swiss International Air Lines
Thu, Sep 4 - Sat, Sep 20
IAD
Washington
OPO
Porto
￥111,060 Roundtrip, found 5 days ago
￥111,060
Roundtrip
found 5 days ago
Select Swiss International Air Lines flight, departing Thu, Sep 4 from Washington to Porto, returning Sat, Sep 20, priced at ￥111,060 found 5 days ago
Brussels Airlines
Thu, Sep 4 - Sat, Sep 20
IAD
Washington
OPO
Porto
￥111,730 Roundtrip, found 5 days ago
￥111,730
Roundtrip
found 5 days ago
Select Brussels Airlines flight, departing Thu, Sep 4 from Washington to Porto, returning Sat, Sep 20, priced at ￥111,730 found 5 days ago
American Airlines
Thu, Sep 4 - Sat, Sep 20
IAD
Washington
OPO
Porto
￥112,950 Roundtrip, found 5 days ago
￥112,950
Roundtrip
found 5 days ago
Select American Airlines flight, departing Thu, Sep 4 from Washington to Porto, returning Sat, Sep 20, priced at ￥112,950 found 5 days ago

Find the cheapest month to fly from Washington (WAS) to Porto (OPO)

February is typically the cheapest month to fly

From ￥62,476 - ￥118,871 per traveler.

Graph displaying average flight prices per month

*Available to Expedia members.