$402 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, Dec 21 - Sun, Jan 4
SEA
Seattle - Tacoma Intl.
OPO
Dr. Francisco de Sa Carneiro
$3,444 Roundtrip, found 2 days ago
$3,444
Roundtrip
found 2 days ago
Select British Airways flight, departing Sun, Dec 21 from Seattle - Tacoma Intl. to Dr. Francisco de Sa Carneiro, returning Sun, Jan 4, priced at $3,444 found 2 days ago

Airfares from $402 One Way, $485 Round Trip from Seattle to Porto

Prices starting at $485 for return flights and $402 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.

Fri, Mar 6 - Tue, Mar 10
SEA
Seattle
OPO
Porto
$485 Roundtrip, found 5 days ago
$485
Roundtrip
found 5 days ago
Select Lufthansa flight, departing Fri, Mar 6 from Seattle to Porto, returning Tue, Mar 10, priced at $485 found 5 days ago
Fri, Mar 6 - Tue, Mar 10
SEA
Seattle
OPO
Porto
$489 Roundtrip, found 5 days ago
$489
Roundtrip
found 5 days ago
Select Lufthansa flight, departing Fri, Mar 6 from Seattle to Porto, returning Tue, Mar 10, priced at $489 found 5 days ago
Sat, Jan 31 - Tue, Feb 10
SEA
Seattle
OPO
Porto
$496 Roundtrip, found 5 days ago
$496
Roundtrip
found 5 days ago
Select Swiss International Air Lines flight, departing Sat, Jan 31 from Seattle to Porto, returning Tue, Feb 10, priced at $496 found 5 days ago
Sat, Jan 17 - Sun, Feb 1
SEA
Seattle
OPO
Porto
$497 Roundtrip, found 5 days ago
$497
Roundtrip
found 5 days ago
Select British Airways flight, departing Sat, Jan 17 from Seattle to Porto, returning Sun, Feb 1, priced at $497 found 5 days ago
Fri, Mar 6 - Tue, Mar 10
SEA
Seattle
OPO
Porto
$502 Roundtrip, found 5 days ago
$502
Roundtrip
found 5 days ago
Select Iberia flight, departing Fri, Mar 6 from Seattle to Porto, returning Tue, Mar 10, priced at $502 found 5 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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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.