$334 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.

Sun, Oct 11 - Fri, Oct 16
SEA
Seattle - Tacoma Intl.
OPO
Dr. Francisco de Sa Carneiro
$1,140 Roundtrip, found 3 days ago
$1,140
Roundtrip
found 3 days ago
Select Turkish Airlines flight, departing Sun, Oct 11 from Seattle - Tacoma Intl. to Dr. Francisco de Sa Carneiro, returning Fri, Oct 16, priced at $1,140 found 3 days ago

Airfares from $334 One Way, $715 Round Trip from Seattle to Porto

Prices starting at $715 for return flights and $334 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.

Sun, Apr 18 - Wed, Apr 28
SEA
Seattle
OPO
Porto
$715 Roundtrip, found 2 hours ago
$715
Roundtrip
found 2 hours ago
Select Lufthansa flight, departing Sun, Apr 18 from Seattle to Porto, returning Wed, Apr 28, priced at $715 found 2 hours ago
Sun, Mar 7 - Wed, Mar 10
SEA
Seattle
OPO
Porto
$721 Roundtrip, found 12 hours ago
$721
Roundtrip
found 12 hours ago
Select Air Canada flight, departing Sun, Mar 7 from Seattle to Porto, returning Wed, Mar 10, priced at $721 found 12 hours ago
Sun, Apr 18 - Wed, Apr 28
SEA
Seattle
OPO
Porto
$731 Roundtrip, found 2 hours ago
$731
Roundtrip
found 2 hours ago
Select British Airways flight, departing Sun, Apr 18 from Seattle to Porto, returning Wed, Apr 28, priced at $731 found 2 hours ago
Mon, Apr 19 - Thu, Apr 29
SEA
Seattle
OPO
Porto
$749 Roundtrip, found 2 days ago
$749
Roundtrip
found 2 days ago
Select Iberia flight, departing Mon, Apr 19 from Seattle to Porto, returning Thu, Apr 29, priced at $749 found 2 days ago
Wed, Oct 28 - Sat, Nov 7
SEA
Seattle
OPO
Porto
$801 Roundtrip, found 2 days ago
$801
Roundtrip
found 2 days ago
Select Swiss International Air Lines flight, departing Wed, Oct 28 from Seattle to Porto, returning Sat, Nov 7, priced at $801 found 2 days 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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Low Price Guarantee

With the best deals and easy searching options, Orbitz make it easy and fun to find cheap Seattle to Porto flights, a great hotel, or a full vacation package. With Orbitz’s low price guarantee, you always get great discounts on air ticket prices.

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.