Flights from Washington to Sintra

Cheapest flights from Washington

These prices were available within the past 7 days. Prices quoted are per person, round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, Nov 15 - Thu, Nov 20

BWI

Baltimore Washington Intl. Thurgood Marshall

LIS

Humberto Delgado

$662 Roundtrip, found 4 hours ago

$662

Roundtrip

found 4 hours ago

Select Icelandair flight, departing Sat, Nov 15 from Baltimore Washington Intl. Thurgood Marshall to Humberto Delgado, returning Thu, Nov 20, priced at $662 found 4 hours ago

Tue, Nov 11 - Thu, Nov 20

BWI

Baltimore Washington Intl. Thurgood Marshall

LIS

Humberto Delgado

$681 Roundtrip, found 4 hours ago

$681

Roundtrip

found 4 hours ago

Select United flight, departing Tue, Nov 11 from Baltimore Washington Intl. Thurgood Marshall to Humberto Delgado, returning Thu, Nov 20, priced at $681 found 4 hours ago

Wed, Nov 12 - Wed, Nov 19

IAD

Washington Dulles Intl.

LIS

Humberto Delgado

$703 Roundtrip, found 4 hours ago

$703

Roundtrip

found 4 hours ago

Select British Airways flight, departing Wed, Nov 12 from Washington Dulles Intl. to Humberto Delgado, returning Wed, Nov 19, priced at $703 found 4 hours ago

Wed, Nov 12 - Wed, Nov 19

BWI

Baltimore Washington Intl. Thurgood Marshall

LIS

Humberto Delgado

$708 Roundtrip, found 4 hours ago

$708

Roundtrip

found 4 hours ago

Select American Airlines flight, departing Wed, Nov 12 from Baltimore Washington Intl. Thurgood Marshall to Humberto Delgado, returning Wed, Nov 19, priced at $708 found 4 hours ago

Wed, Nov 12 - Wed, Nov 19

BWI

Baltimore Washington Intl. Thurgood Marshall

LIS

Humberto Delgado

$721 Roundtrip, found 4 hours ago

$721

Roundtrip

found 4 hours ago

Select British Airways flight, departing Wed, Nov 12 from Baltimore Washington Intl. Thurgood Marshall to Humberto Delgado, returning Wed, Nov 19, priced at $721 found 4 hours ago

Fri, Apr 24 - Sat, May 9

IAD

Washington Dulles Intl.

LIS

Humberto Delgado

$723 Roundtrip, found 2 days ago

$723

Roundtrip

found 2 days ago

Select Scandinavian Airlines flight, departing Fri, Apr 24 from Washington Dulles Intl. to Humberto Delgado, returning Sat, May 9, priced at $723 found 2 days ago

Wed, Apr 22 - Sun, May 10

IAD

Washington Dulles Intl.

LIS

Humberto Delgado

$740 Roundtrip, found 12 hours ago

$740

Roundtrip

found 12 hours ago

Select TAP Portugal flight, departing Wed, Apr 22 from Washington Dulles Intl. to Humberto Delgado, returning Sun, May 10, priced at $740 found 12 hours ago

Wed, Nov 12 - Wed, Nov 19

DCA

Ronald Reagan Washington National

LIS

Humberto Delgado

$753 Roundtrip, found 4 hours ago

$753

Roundtrip

found 4 hours ago

Select British Airways flight, departing Wed, Nov 12 from Ronald Reagan Washington National to Humberto Delgado, returning Wed, Nov 19, priced at $753 found 4 hours ago

Fri, Nov 14 - Wed, Dec 3

IAD

Washington Dulles Intl.

LIS

Humberto Delgado

$754 Roundtrip, found 3 days ago

$754

Roundtrip

found 3 days ago

Select Air Canada flight, departing Fri, Nov 14 from Washington Dulles Intl. to Humberto Delgado, returning Wed, Dec 3, priced at $754 found 3 days ago

Wed, Apr 22 - Sun, May 10

IAD

Washington Dulles Intl.

LIS

Humberto Delgado

$761 Roundtrip, found 12 hours ago

$761

Roundtrip

found 12 hours ago

Select Royal Air Maroc flight, departing Wed, Apr 22 from Washington Dulles Intl. to Humberto Delgado, returning Sun, May 10, priced at $761 found 12 hours ago

Fri, Nov 14 - Wed, Dec 3

IAD

Washington Dulles Intl.

LIS

Humberto Delgado

$761 Roundtrip, found 3 days ago

$761

Roundtrip

found 3 days ago

Select Lufthansa flight, departing Fri, Nov 14 from Washington Dulles Intl. to Humberto Delgado, returning Wed, Dec 3, priced at $761 found 3 days ago

Fri, Nov 14 - Wed, Dec 3

IAD

Washington Dulles Intl.

LIS

Humberto Delgado

$762 Roundtrip, found 3 days ago

$762

Roundtrip

found 3 days ago

Select Swiss International Air Lines flight, departing Fri, Nov 14 from Washington Dulles Intl. to Humberto Delgado, returning Wed, Dec 3, priced at $762 found 3 days ago

Wed, Nov 12 - Wed, Nov 19

BWI

Baltimore Washington Intl. Thurgood Marshall

LIS

Humberto Delgado

$842 Roundtrip, found 4 hours ago

$842

Roundtrip

found 4 hours ago

Select Delta flight, departing Wed, Nov 12 from Baltimore Washington Intl. Thurgood Marshall to Humberto Delgado, returning Wed, Nov 19, priced at $842 found 4 hours ago

Fri, Nov 14 - Wed, Dec 3

IAD

Washington Dulles Intl.

LIS

Humberto Delgado

$860 Roundtrip, found 3 days ago

$860

Roundtrip

found 3 days ago

Select Virgin Atlantic flight, departing Fri, Nov 14 from Washington Dulles Intl. to Humberto Delgado, returning Wed, Dec 3, priced at $860 found 3 days ago

Fri, Nov 14 - Wed, Dec 3

IAD

Washington Dulles Intl.

LIS

Humberto Delgado

$963 Roundtrip, found 3 days ago

$963

Roundtrip

found 3 days ago

Select KLM flight, departing Fri, Nov 14 from Washington Dulles Intl. to Humberto Delgado, returning Wed, Dec 3, priced at $963 found 3 days ago

Fri, Nov 14 - Wed, Dec 3

IAD

Washington Dulles Intl.

LIS

Humberto Delgado

$973 Roundtrip, found 3 days ago

$973

Roundtrip

found 3 days ago

Select Austrian Airlines flight, departing Fri, Nov 14 from Washington Dulles Intl. to Humberto Delgado, returning Wed, Dec 3, priced at $973 found 3 days ago

Fri, Nov 14 - Wed, Dec 3

IAD

Washington Dulles Intl.

LIS

Humberto Delgado

$990 Roundtrip, found 3 days ago

$990

Roundtrip

found 3 days ago

Select Brussels Airlines flight, departing Fri, Nov 14 from Washington Dulles Intl. to Humberto Delgado, returning Wed, Dec 3, priced at $990 found 3 days ago

Fri, Nov 14 - Wed, Dec 3

IAD

Washington Dulles Intl.

LIS

Humberto Delgado

$991 Roundtrip, found 3 days ago

$991

Roundtrip

found 3 days ago

Select Iberia flight, departing Fri, Nov 14 from Washington Dulles Intl. to Humberto Delgado, returning Wed, Dec 3, priced at $991 found 3 days ago

Fri, Nov 14 - Wed, Dec 3

IAD

Washington Dulles Intl.

LIS

Humberto Delgado

$1,003 Roundtrip, found 3 days ago

$1,003

Roundtrip

found 3 days ago

Select Air France flight, departing Fri, Nov 14 from Washington Dulles Intl. to Humberto Delgado, returning Wed, Dec 3, priced at $1,003 found 3 days ago

Fri, Nov 14 - Wed, Dec 3

IAD

Washington Dulles Intl.

LIS

Humberto Delgado

$1,021 Roundtrip, found 3 days ago

$1,021

Roundtrip

found 3 days ago

Select Finnair flight, departing Fri, Nov 14 from Washington Dulles Intl. to Humberto Delgado, returning Wed, Dec 3, priced at $1,021 found 3 days ago