Cheap flights from Waldorf to Cascais from CA $537

View CA $537 flight on Fri, Nov. 21, 2025Opens in a new window

Popular airlines from Waldorf to Cascais

  • Plan, book, fly with confidence

  • trending down icon

    Be in the know

    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon

    Book smarter

    Save up to 30% on select hotels after you book a flight*
  • payments icon

    Earn twice

    Earn your airline miles on top of our rewards
    Sign in

Cheap flights from Waldorf (DCA) to Cascais (LIS)

Prices were available within the past 7 days and start at CA $537 for one-way flights and CA $946 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Mon, Nov. 10 - Tue, Dec. 2
DCA
Washington
LIS
Lisbon
CA $946 Roundtrip, found 4 days ago
CA $946
Roundtrip
found 4 days ago
Select United flight, departing Mon, Nov. 10 from Washington to Lisbon, returning Tue, Dec. 2, priced at CA $946 found 4 days ago
Delta
Sun, Dec. 7 - Tue, Dec. 16
DCA
Washington
LIS
Lisbon
CA $956 Roundtrip, found 5 days ago
CA $956
Roundtrip
found 5 days ago
Select Delta flight, departing Sun, Dec. 7 from Washington to Lisbon, returning Tue, Dec. 16, priced at CA $956 found 5 days ago
American Airlines
Sun, Dec. 7 - Tue, Dec. 16
DCA
Washington
LIS
Lisbon
CA $956 Roundtrip, found 5 days ago
CA $956
Roundtrip
found 5 days ago
Select American Airlines flight, departing Sun, Dec. 7 from Washington to Lisbon, returning Tue, Dec. 16, priced at CA $956 found 5 days ago
British Airways
Sun, Dec. 7 - Tue, Dec. 16
DCA
Washington
LIS
Lisbon
CA $956 Roundtrip, found 5 days ago
CA $956
Roundtrip
found 5 days ago
Select British Airways flight, departing Sun, Dec. 7 from Washington to Lisbon, returning Tue, Dec. 16, priced at CA $956 found 5 days ago
Air Canada
Mon, Nov. 10 - Tue, Dec. 2
DCA
Washington
LIS
Lisbon
CA $966 Roundtrip, found 4 days ago
CA $966
Roundtrip
found 4 days ago
Select Air Canada flight, departing Mon, Nov. 10 from Washington to Lisbon, returning Tue, Dec. 2, priced at CA $966 found 4 days ago
KLM
Wed, Oct. 22 - Wed, Nov. 12
DCA
Washington
LIS
Lisbon
CA $1,050 Roundtrip, found 1 day ago
CA $1,050
Roundtrip
found 1 day ago
Select KLM flight, departing Wed, Oct. 22 from Washington to Lisbon, returning Wed, Nov. 12, priced at CA $1,050 found 1 day ago

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

November is typically the cheapest month to fly

From CA $635 - CA $1,811 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.