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

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Airfares from $355 One Way, $777 Round Trip from Seattle to Porto

Prices starting at $777 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.

Tue, Oct 13 - Wed, Oct 21
SEA
Seattle
OPO
Porto
$777 Roundtrip, found 1 day ago
$777
Roundtrip
found 1 day ago
Select British Airways flight, departing Tue, Oct 13 from Seattle to Porto, returning Wed, Oct 21, priced at $777 found 1 day ago
Tue, Sep 15 - Fri, Sep 25
SEA
Seattle
OPO
Porto
$793 Roundtrip, found 5 hours ago
$793
Roundtrip
found 5 hours ago
Select Scandinavian Airlines flight, departing Tue, Sep 15 from Seattle to Porto, returning Fri, Sep 25, priced at $793 found 5 hours ago
Mon, Nov 9 - Mon, Nov 23
SEA
Seattle
OPO
Porto
$799 Roundtrip, found 1 day ago
$799
Roundtrip
found 1 day ago
Select Iberia flight, departing Mon, Nov 9 from Seattle to Porto, returning Mon, Nov 23, priced at $799 found 1 day ago
Wed, Nov 4 - Thu, Nov 19
SEA
Seattle
OPO
Porto
$812 Roundtrip, found 6 days ago
$812
Roundtrip
found 6 days ago
Select United flight, departing Wed, Nov 4 from Seattle to Porto, returning Thu, Nov 19, priced at $812 found 6 days ago
Tue, Oct 13 - Wed, Oct 21
SEA
Seattle
OPO
Porto
$818 Roundtrip, found 1 day ago
$818
Roundtrip
found 1 day ago
Select Air Canada flight, departing Tue, Oct 13 from Seattle to Porto, returning Wed, Oct 21, priced at $818 found 1 day ago

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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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.

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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.