Flights from Seattle to Porto

Cheapest flights from Seattle

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.

Wed, Feb 11 - Mon, Feb 23

SEA

Seattle - Tacoma Intl.

OPO

Dr. Francisco de Sa Carneiro

$556 Roundtrip, found 15 hours ago

$556

Roundtrip

found 15 hours ago

Select American Airlines flight, departing Wed, Feb 11 from Seattle - Tacoma Intl. to Dr. Francisco de Sa Carneiro, returning Mon, Feb 23, priced at $556 found 15 hours ago

Wed, Feb 11 - Mon, Feb 23

SEA

Seattle - Tacoma Intl.

OPO

Dr. Francisco de Sa Carneiro

$563 Roundtrip, found 15 hours ago

$563

Roundtrip

found 15 hours ago

Select British Airways flight, departing Wed, Feb 11 from Seattle - Tacoma Intl. to Dr. Francisco de Sa Carneiro, returning Mon, Feb 23, priced at $563 found 15 hours ago

Wed, Feb 11 - Mon, Feb 23

SEA

Seattle - Tacoma Intl.

OPO

Dr. Francisco de Sa Carneiro

$565 Roundtrip, found 15 hours ago

$565

Roundtrip

found 15 hours ago

Select Swiss International Air Lines flight, departing Wed, Feb 11 from Seattle - Tacoma Intl. to Dr. Francisco de Sa Carneiro, returning Mon, Feb 23, priced at $565 found 15 hours ago

Wed, Feb 11 - Mon, Feb 23

SEA

Seattle - Tacoma Intl.

OPO

Dr. Francisco de Sa Carneiro

$577 Roundtrip, found 15 hours ago

$577

Roundtrip

found 15 hours ago

Select Swiss International Air Lines flight, departing Wed, Feb 11 from Seattle - Tacoma Intl. to Dr. Francisco de Sa Carneiro, returning Mon, Feb 23, priced at $577 found 15 hours ago

Wed, Feb 11 - Mon, Feb 23

SEA

Seattle - Tacoma Intl.

OPO

Dr. Francisco de Sa Carneiro

$580 Roundtrip, found 15 hours ago

$580

Roundtrip

found 15 hours ago

Select Swiss International Air Lines flight, departing Wed, Feb 11 from Seattle - Tacoma Intl. to Dr. Francisco de Sa Carneiro, returning Mon, Feb 23, priced at $580 found 15 hours ago

Wed, Feb 11 - Mon, Feb 23

SEA

Seattle - Tacoma Intl.

OPO

Dr. Francisco de Sa Carneiro

$582 Roundtrip, found 15 hours ago

$582

Roundtrip

found 15 hours ago

Select Lufthansa flight, departing Wed, Feb 11 from Seattle - Tacoma Intl. to Dr. Francisco de Sa Carneiro, returning Mon, Feb 23, priced at $582 found 15 hours ago

Wed, Feb 11 - Mon, Feb 23

SEA

Seattle - Tacoma Intl.

OPO

Dr. Francisco de Sa Carneiro

$583 Roundtrip, found 15 hours ago

$583

Roundtrip

found 15 hours ago

Select British Airways flight, departing Wed, Feb 11 from Seattle - Tacoma Intl. to Dr. Francisco de Sa Carneiro, returning Mon, Feb 23, priced at $583 found 15 hours ago

Wed, Feb 11 - Mon, Feb 23

SEA

Seattle - Tacoma Intl.

OPO

Dr. Francisco de Sa Carneiro

$586 Roundtrip, found 15 hours ago

$586

Roundtrip

found 15 hours ago

Select United flight, departing Wed, Feb 11 from Seattle - Tacoma Intl. to Dr. Francisco de Sa Carneiro, returning Mon, Feb 23, priced at $586 found 15 hours ago

Wed, Feb 11 - Mon, Feb 23

SEA

Seattle - Tacoma Intl.

OPO

Dr. Francisco de Sa Carneiro

$620 Roundtrip, found 15 hours ago

$620

Roundtrip

found 15 hours ago

Select United flight, departing Wed, Feb 11 from Seattle - Tacoma Intl. to Dr. Francisco de Sa Carneiro, returning Mon, Feb 23, priced at $620 found 15 hours ago

Wed, Feb 11 - Mon, Feb 23

SEA

Seattle - Tacoma Intl.

OPO

Dr. Francisco de Sa Carneiro

$622 Roundtrip, found 15 hours ago

$622

Roundtrip

found 15 hours ago

Select United flight, departing Wed, Feb 11 from Seattle - Tacoma Intl. to Dr. Francisco de Sa Carneiro, returning Mon, Feb 23, priced at $622 found 15 hours ago

Wed, Feb 11 - Mon, Feb 23

SEA

Seattle - Tacoma Intl.

OPO

Dr. Francisco de Sa Carneiro

$626 Roundtrip, found 15 hours ago

$626

Roundtrip

found 15 hours ago

Select United flight, departing Wed, Feb 11 from Seattle - Tacoma Intl. to Dr. Francisco de Sa Carneiro, returning Mon, Feb 23, priced at $626 found 15 hours ago

Wed, Feb 11 - Mon, Feb 23

SEA

Seattle - Tacoma Intl.

OPO

Dr. Francisco de Sa Carneiro

$628 Roundtrip, found 15 hours ago

$628

Roundtrip

found 15 hours ago

Select KLM flight, departing Wed, Feb 11 from Seattle - Tacoma Intl. to Dr. Francisco de Sa Carneiro, returning Mon, Feb 23, priced at $628 found 15 hours ago

Wed, Feb 11 - Mon, Feb 23

SEA

Seattle - Tacoma Intl.

OPO

Dr. Francisco de Sa Carneiro

$628 Roundtrip, found 15 hours ago

$628

Roundtrip

found 15 hours ago

Select Air France flight, departing Wed, Feb 11 from Seattle - Tacoma Intl. to Dr. Francisco de Sa Carneiro, returning Mon, Feb 23, priced at $628 found 15 hours ago

Wed, Feb 11 - Mon, Feb 23

SEA

Seattle - Tacoma Intl.

OPO

Dr. Francisco de Sa Carneiro

$635 Roundtrip, found 15 hours ago

$635

Roundtrip

found 15 hours ago

Select United flight, departing Wed, Feb 11 from Seattle - Tacoma Intl. to Dr. Francisco de Sa Carneiro, returning Mon, Feb 23, priced at $635 found 15 hours ago

Wed, Feb 11 - Mon, Feb 23

SEA

Seattle - Tacoma Intl.

OPO

Dr. Francisco de Sa Carneiro

$637 Roundtrip, found 15 hours ago

$637

Roundtrip

found 15 hours ago

Select United flight, departing Wed, Feb 11 from Seattle - Tacoma Intl. to Dr. Francisco de Sa Carneiro, returning Mon, Feb 23, priced at $637 found 15 hours ago

Wed, Feb 11 - Mon, Feb 23

SEA

Seattle - Tacoma Intl.

OPO

Dr. Francisco de Sa Carneiro

$642 Roundtrip, found 15 hours ago

$642

Roundtrip

found 15 hours ago

Select United flight, departing Wed, Feb 11 from Seattle - Tacoma Intl. to Dr. Francisco de Sa Carneiro, returning Mon, Feb 23, priced at $642 found 15 hours ago

Wed, Feb 11 - Mon, Feb 23

SEA

Seattle - Tacoma Intl.

OPO

Dr. Francisco de Sa Carneiro

$728 Roundtrip, found 15 hours ago

$728

Roundtrip

found 15 hours ago

Select Delta flight, departing Wed, Feb 11 from Seattle - Tacoma Intl. to Dr. Francisco de Sa Carneiro, returning Mon, Feb 23, priced at $728 found 15 hours ago

Wed, Feb 11 - Mon, Feb 23

SEA

Seattle - Tacoma Intl.

OPO

Dr. Francisco de Sa Carneiro

$784 Roundtrip, found 15 hours ago

$784

Roundtrip

found 15 hours ago

Select Iberia flight, departing Wed, Feb 11 from Seattle - Tacoma Intl. to Dr. Francisco de Sa Carneiro, returning Mon, Feb 23, priced at $784 found 15 hours ago

Wed, Feb 11 - Mon, Feb 23

SEA

Seattle - Tacoma Intl.

OPO

Dr. Francisco de Sa Carneiro

$817 Roundtrip, found 15 hours ago

$817

Roundtrip

found 15 hours ago

Select Air Canada flight, departing Wed, Feb 11 from Seattle - Tacoma Intl. to Dr. Francisco de Sa Carneiro, returning Mon, Feb 23, priced at $817 found 15 hours ago

Wed, Feb 11 - Mon, Feb 23

SEA

Seattle - Tacoma Intl.

OPO

Dr. Francisco de Sa Carneiro

$1,410 Roundtrip, found 15 hours ago

$1,410

Roundtrip

found 15 hours ago

Select TAP Portugal flight, departing Wed, Feb 11 from Seattle - Tacoma Intl. to Dr. Francisco de Sa Carneiro, returning Mon, Feb 23, priced at $1,410 found 15 hours ago