$355 Cheap flight deals from Seattle (SEA) to Porto (OPO)

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This Weekend's Flight Deals from Seattle to Porto

This weekend's flight prices found within the past 7 days, for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, May 30 - Fri, Jun 5
SEA
Seattle - Tacoma Intl.
OPO
Dr. Francisco de Sa Carneiro
$1,348 Roundtrip, found 5 days ago
$1,348
Roundtrip
found 5 days ago
Select Brussels Airlines flight, departing Sat, May 30 from Seattle - Tacoma Intl. to Dr. Francisco de Sa Carneiro, returning Fri, Jun 5, priced at $1,348 found 5 days ago

Airfares from $355 One Way, $760 Round Trip from Seattle to Porto

Prices starting at $760 for return flights and $355 for one-way flights to Porto were the cheapest prices found within the past 7 days, for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Apr 7 - Wed, Apr 14
SEA
Seattle
OPO
Porto
$760 Roundtrip, found 1 day ago
$760
Roundtrip
found 1 day ago
Select British Airways flight, departing Wed, Apr 7 from Seattle to Porto, returning Wed, Apr 14, priced at $760 found 1 day ago
Sun, Nov 1 - Wed, Nov 18
SEA
Seattle
OPO
Porto
$769 Roundtrip, found 11 hours ago
$769
Roundtrip
found 11 hours ago
Select Scandinavian Airlines flight, departing Sun, Nov 1 from Seattle to Porto, returning Wed, Nov 18, priced at $769 found 11 hours ago
Tue, Nov 3 - Tue, Nov 17
SEA
Seattle
OPO
Porto
$773 Roundtrip, found 6 days ago
$773
Roundtrip
found 6 days ago
Select Iberia flight, departing Tue, Nov 3 from Seattle to Porto, returning Tue, Nov 17, priced at $773 found 6 days ago
Wed, Apr 7 - Wed, Apr 14
SEA
Seattle
OPO
Porto
$805 Roundtrip, found 1 day ago
$805
Roundtrip
found 1 day ago
Select Lufthansa flight, departing Wed, Apr 7 from Seattle to Porto, returning Wed, Apr 14, priced at $805 found 1 day ago
Wed, Nov 4 - Wed, Nov 18
SEA
Seattle
OPO
Porto
$814 Roundtrip, found 6 days ago
$814
Roundtrip
found 6 days ago
Select Air Canada flight, departing Wed, Nov 4 from Seattle to Porto, returning Wed, Nov 18, priced at $814 found 6 days ago

Porto economy flight packages

Price found within the past 48 hours. Click for updated prices.
Eurostars Aliados
5.0-star property

Eurostars Aliados

9.4/10 Exceptional! (667 reviews)

Jul 4 - Jul 10

6 night stay

Seattle (SEA) to Porto (OPO)

Delta • Roundtrip • Coach
Price was $2,251, price is now $1,795 per person
$1,795
per person
found 1 day ago
LENSCAPE Coterie
5.0-star property

LENSCAPE Coterie

9.2/10 Wonderful! (9 reviews)

Jul 4 - Jul 10

6 night stay

Seattle (SEA) to Porto (OPO)

Delta • Roundtrip • Coach
Price was $3,078, price is now $2,034 per person
$2,034
per person
found 1 day ago
MS Collection Arouca Mosteiro de Arouca
5.0-star property

MS Collection Arouca Mosteiro de Arouca

10/10 Exceptional! (35 reviews)

Jul 4 - Jul 10

6 night stay

Seattle (SEA) to Porto (OPO)

Delta • Roundtrip • Coach
Price was $2,498, price is now $1,985 per person
$1,985
per person
found 1 day ago
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More About Flying To Porto from Seattle

Route Information for Flights from Seattle to Porto

Origin Airport IATA Code
SEA
Destination Airport IATA Code
OPO
Distance
Direct Flight Airlines
Earliest Flight Arrival
Latest Flight Arrival

Seattle to Porto

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Orbitz looks for the best deals on Seattle to Porto flights for you. Mix and match airlines for your departing and return flights to fit your travel schedule and budget.

Frequently asked questions

What is the shortest flight from Seattle to Porto?
It's a long way from Seattle - Tacoma Intl. Airport (SEA) to Dr. Francisco de Sa Carneiro Airport (OPO) — 11 hours and 40 minutes at least. But your time in your seat doesn't need to be a strain. Be prepared and come with the basics like your toothbrush and a pillow.
What is the cheapest day of the week to fly?
Consider flying out early in the week to save on your airfare. Orbitz data from 2021 shows that Monday is the cheapest day to depart, followed by Tuesday. Saturday showed the highest average ticket prices likely because many travelers prefer to start their vacation on a weekend.
What is the cheapest month to fly?
We won't keep you guessing, according to Orbitz data from 2021, the cheapest month to fly is February. Perfect for those who need a weekend getaway, or just a break from it all in the shortest month of the year. Be aware that the most expensive time to fly is during the height of summer in July, and in the holiday month of December.*According to flight demand on Orbitz.com from January to December 2021. Savings are subject to change based on departure location, date and destination.

More Destinations

Fare, taxes & fees: Fares include all taxes and fees, except baggage fees. Rates shown reflect fares found by other Orbitz users over the past 7 days. Due to rapidly changing airline prices & seat availability, these fares may no longer be available.

Refunds/changes/cancellations: Itinerary changes, if permitted for the fare, will have a $30 service fee charged by Orbitz. Additional airline charges may apply.

Other conditions: Schedules, fares and rules are subject to change without notice. Seats are limited and may not be available on all flights/dates or in all markets. Lower fares may be available. Fares will not be honored retroactively or in exchange for any wholly/partially unused ticket. Tickets are non-transferable and non-refundable. Fare rules are provided for the selected itinerary before booking.