Flights to Cascais Coast from Seattle - $333

View $333 flight on Sun, Nov 9, 2025Opens in a new window

Popular airlines from Seattle to Cascais Coast

  • British Airways

    British Airways

  • Lufthansa

    Lufthansa

  • Air Canada

    Air Canada

  • Turkish Airlines

    Turkish Airlines

  • Virgin Atlantic

    Virgin Atlantic

  • Aer Lingus

    Aer Lingus

  • United

    United

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Cheap Flights from Seattle to Cascais Coast (SEA-LIS)

Prices were available within the past 7 days and start at $333 for one-way flights and $508 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Icelandair
Wed, Mar 25 - Thu, Apr 16
SEA
Seattle
LIS
Lisbon
$508 Roundtrip, found 1 day ago
$508
Roundtrip
found 1 day ago
Select Icelandair flight, departing Wed, Mar 25 from Seattle to Lisbon, returning Thu, Apr 16, priced at $508 found 1 day ago
Air Canada
Thu, Nov 13 - Thu, Nov 20
SEA
Seattle
LIS
Lisbon
$524 Roundtrip, found 2 days ago
$524
Roundtrip
found 2 days ago
Select Air Canada flight, departing Thu, Nov 13 from Seattle to Lisbon, returning Thu, Nov 20, priced at $524 found 2 days ago
United
Mon, Oct 13 - Mon, Nov 10
SEA
Seattle
LIS
Lisbon
$524 Roundtrip, found 1 day ago
$524
Roundtrip
found 1 day ago
Select United flight, departing Mon, Oct 13 from Seattle to Lisbon, returning Mon, Nov 10, priced at $524 found 1 day ago
American Airlines
Wed, Jan 28 - Mon, Feb 9
SEA
Seattle
LIS
Lisbon
$543 Roundtrip, found 1 day ago
$543
Roundtrip
found 1 day ago
Select American Airlines flight, departing Wed, Jan 28 from Seattle to Lisbon, returning Mon, Feb 9, priced at $543 found 1 day ago
British Airways
Wed, Jan 14 - Wed, Jan 21
SEA
Seattle
LIS
Lisbon
$543 Roundtrip, found 3 days ago
$543
Roundtrip
found 3 days ago
Select British Airways flight, departing Wed, Jan 14 from Seattle to Lisbon, returning Wed, Jan 21, priced at $543 found 3 days ago
Lufthansa
Wed, Nov 26 - Tue, Dec 2
SEA
Seattle
LIS
Lisbon
$546 Roundtrip, found 2 days ago
$546
Roundtrip
found 2 days ago
Select Lufthansa flight, departing Wed, Nov 26 from Seattle to Lisbon, returning Tue, Dec 2, priced at $546 found 2 days ago

Find the cheapest month to fly from Seattle (SEA) to Lisbon (LIS)

February is typically the cheapest month to fly

From $471 - $1,072 per traveler.

Graph displaying average flight prices per month

Alternative airports

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Humberto Delgado LIS. Cheapest option available. Flights from $791
LIS
Humberto Delgado
Cheapest
Flights from $791

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