Trip.com
>
Flights
>
Flights to United States
>
Flights to Washington
>
Flights to Seattle
>
Porto to Seattle flight
>
Porto Airport to Seattle Tacoma Intl. Airport flight

Explore the cheapest one-way and round-trip flights from Porto Airport to Seattle Tacoma Intl. Airport over the next 90 days, with one-way fares from $599 and round-trip from $782. Based on Trip.com's latest 7-day flight data.

      • OPO 4:25 PM
        33h 45m
        1 stop
        SEA 6:10 PM
        Porto - Seattle | Thu, Nov 5 | Turkish Airlines
        SEA 7:05 PM
        30h 50m
        1 stop
        OPO 9:55 AM
        Seattle - Porto | Mon, Nov 9 | Turkish Airlines
        $782 $1,259
        38% off
        38% off
        $1,259 $782
      • OPO 10:55 AM
        39h 15m
        1 stop
        SEA 6:10 PM
        Porto - Seattle | Fri, Nov 6 | Turkish Airlines
        SEA 7:05 PM
        30h 50m
        1 stop
        OPO 9:55 AM
        Seattle - Porto | Sat, Nov 14 | Turkish Airlines
        $797 $1,259
        37% off
        37% off
        $1,259 $797
      • OPO 4:25 PM
        33h 45m
        1 stop
        SEA 6:10 PM
        Porto - Seattle | Sun, Nov 1 | Turkish Airlines
        SEA 8:05 PM
        29h 50m
        1 stop
        OPO 9:55 AM
        Seattle - Porto | Thu, Nov 5 | Turkish Airlines
        $806 $1,259
        36% off
        36% off
        $1,259 $806
      • OPO 10:55 AM
        38h 15m
        1 stop
        SEA 5:10 PM
        Porto - Seattle | Sat, Nov 7 | Turkish Airlines
        SEA 7:05 PM
        30h 50m
        1 stop
        OPO 9:55 AM
        Seattle - Porto | Sat, Nov 14 | Turkish Airlines
        $840
        33% off
        $1,259 $840
      • OPO 10:55 AM
        38h 15m
        1 stop
        SEA 5:10 PM
        Porto - Seattle | Sat, Nov 14 | Turkish Airlines
        SEA 7:05 PM
        36h 20m
        1 stop
        OPO 3:25 PM
        Seattle - Porto | Sat, Nov 21 | Turkish Airlines
        $843
        33% off
        $1,259 $843
      • OPO 10:55 AM
        38h 15m
        1 stop
        SEA 5:10 PM
        Porto - Seattle | Thu, Nov 12 | Turkish Airlines
        SEA 7:05 PM
        30h 50m
        1 stop
        OPO 9:55 AM
        Seattle - Porto | Mon, Nov 16 | Turkish Airlines
        $849
        33% off
        $1,259 $849
      • OPO 4:25 PM
        32h 45m
        1 stop
        SEA 5:10 PM
        Porto - Seattle | Sun, Nov 8 | Turkish Airlines
        SEA 7:05 PM
        36h 20m
        1 stop
        OPO 3:25 PM
        Seattle - Porto | Fri, Nov 13 | Turkish Airlines
        $849
        33% off
        $1,259 $849
      • OPO 5:00 AM
        14h 47m
        1 stop
        SEA 11:47 AM
        Porto - Seattle | Thu, Nov 5 | KLM
        SEA 3:25 PM
        22h 35m
        1 stop
        OPO 10:00 PM
        Seattle - Porto | Mon, Nov 9 | Air France
        $888
        28% off
        $1,259 $888
      • OPO 5:55 AM
        15h 55m
        1 stop
        SEA 1:50 PM
        Porto - Seattle | Thu, Nov 5 | Air France
        SEA 3:25 PM
        22h 35m
        1 stop
        OPO 10:00 PM
        Seattle - Porto | Mon, Nov 9 | Air France
        $895
        28% off
        $1,259 $895
      • OPO 5:00 AM
        14h 47m
        1 stop
        SEA 11:47 AM
        Porto - Seattle | Fri, Nov 6 | KLM
        SEA 4:05 PM
        21h 55m
        1 stop
        OPO 10:00 PM
        Seattle - Porto | Sat, Nov 14 | Air France
        $913
        27% off
        $1,259 $913
      • OPO 4:10 PM
        27h 37m
        1 stop
        SEA 11:47 AM
        Porto - Seattle | Thu, Nov 19 | KLM
        SEA 3:25 PM
        22h 30m
        1 stop
        OPO 9:55 PM
        Seattle - Porto | Sun, Nov 22 | Air France
        $917
        27% off
        $1,259 $917
      • OPO 5:55 AM
        17h 19m
        1 stop
        SEA 3:14 PM
        Porto - Seattle | Fri, Nov 6 | Air France
        SEA 4:05 PM
        21h 55m
        1 stop
        OPO 10:00 PM
        Seattle - Porto | Sat, Nov 14 | KLM
        $919
        27% off
        $1,259 $919
      • OPO 1:00 PM
        17h 25m
        1 stop
        SEA 2:00 PM
        Porto - Seattle | Fri, Oct 9 | Normal Airline
        SEA 3:00 PM
        6h
        Nonstop
        OPO 4:00 PM
        Seattle - Porto | Sun, Oct 11 | Normal Airline
        Find more flights
        Find more flights
      • OPO 3:45 PM
        33h 15m
        1 stop
        SEA 5:00 PM
        Porto - Seattle | Mon, Nov 23 | easyJet
        $599 $899
        33% off
        33% off
        $899 $599
      • OPO 8:30 PM
        28h 30m
        1 stop
        SEA 5:00 PM
        Porto - Seattle | Fri, Dec 4 | easyJet
        $604 $899
        33% off
        33% off
        $899 $604
      • OPO 6:20 PM
        28h 30m
        1 stop
        SEA 2:50 PM
        Porto - Seattle | Fri, Dec 4 | TAP Air Portugal
        $617 $899
        31% off
        31% off
        $899 $617
      • OPO 6:20 PM
        30h 40m
        1 stop
        SEA 5:00 PM
        Porto - Seattle | Mon, Nov 23 | TAP Air Portugal
        $627
        30% off
        $899 $627
      • OPO 5:00 AM
        14h 50m
        1 stop
        SEA 11:50 AM
        Porto - Seattle | Thu, Dec 3 | KLM
        $636
        28% off
        $899 $636
      • OPO 5:55 AM
        15h 55m
        1 stop
        SEA 1:50 PM
        Porto - Seattle | Thu, Dec 3 | Air France
        $642
        28% off
        $899 $642
      • OPO 5:00 AM
        14h 47m
        1 stop
        SEA 11:47 AM
        Porto - Seattle | Wed, Nov 25 | KLM
        $650
        28% off
        $899 $650
      • OPO 11:15 AM
        32h 35m
        1 stop
        SEA 11:50 AM
        Porto - Seattle | Fri, Dec 4 | KLM
        $652
        27% off
        $899 $652
      • OPO 9:55 AM
        33h 52m
        1 stop
        SEA 11:47 AM
        Porto - Seattle | Tue, Nov 17 | KLM
        $653
        27% off
        $899 $653
      • OPO 4:10 PM
        27h 37m
        1 stop
        SEA 11:47 AM
        Porto - Seattle | Wed, Nov 18 | KLM
        $653
        27% off
        $899 $653
      • OPO 5:00 AM
        14h 47m
        1 stop
        SEA 11:47 AM
        Porto - Seattle | Thu, Nov 19 | KLM
        $653
        27% off
        $899 $653
      • OPO 5:55 AM
        17h 19m
        1 stop
        SEA 3:14 PM
        Porto - Seattle | Wed, Nov 25 | Air France
        $656
        27% off
        $899 $656
      • OPO 1:00 PM
        17h 25m
        1 stop
        SEA 2:00 PM
        Porto - Seattle | Fri, Oct 9 | Normal Airline
        Find more flights
        Find more flights

Displayed flight fares from Porto Airport to Seattle Tacoma Intl. Airport are based on average prices across airlines for the next 3 months, according to the latest Trip.com database.

Which airline offers the cheapest flights from Porto Airport to Seattle Tacoma Intl. Airport?

The cheapest airline flying from Porto Airport to Seattle Tacoma Intl. Airport is Ryanair (from $445) among 10 carriers operating this route. Based on Trip.com's latest 7-day flight data.

Ryanair
From $445
easyJet
From $517
TAP Air Portugal
From $558
KLM
From $636
Air France
From $642
Iberia
From $666
British Airways
From $678
Turkish Airlines
From $698
Azores Airlines
From $702
Vueling Airlines
From $721

Find more flights and airlines

What is the flight schedule from Porto Airport to Seattle Tacoma Intl. Airport?

Check the schedule for flights from Porto to Seattle and find the flight that best matches your travel plans.

Flight info.
Departure
Arrival
Weekly Schedule

  1. KL1570

    Porto Airport

    5:00 AM

    OPO

    2h 30m

    Nonstop

    8:30 AM

    AMS

    S M T W T F S
    Search

  2. KL6033

    Schiphol Airport

    10:20 AM

    AMS

    10h 13m

    Nonstop

    11:33 AM

    SEA

    S M T W T F S

  3. AF1517

    Porto Airport

    5:55 AM

    OPO

    2h 15m

    Nonstop

    9:10 AM

    CDG

    S M T W T F S
    Search

  4. AF3622

    Roissy-Charles De Gaulle Airport

    4:00 PM

    CDG

    10h 27m

    Nonstop

    5:27 PM

    SEA

    S M T W T F S

  5. KL1574

    Porto Airport

    4:10 PM

    OPO

    2h 40m

    Nonstop

    7:50 PM

    AMS

    S M T W T F S
    Search

  6. KL6033

    Schiphol Airport

    10:20 AM

    AMS

    10h 13m

    Nonstop

    11:33 AM

    SEA

    S M T W T F S

  7. TP1330

    Porto Airport

    6:10 PM

    OPO

    2h 20m

    Nonstop

    8:30 PM

    LGW

    S - T W - - S
    Search

  8. VS4036

    Heathrow Airport

    5:45 PM

    LHR

    10h 18m

    Nonstop

    8:03 PM

    SEA

    S M T W T F S

  9. TK1452

    Porto Airport

    4:40 PM

    OPO

    4h 35m

    Nonstop

    11:15 PM

    IST

    S M T W T F S
    Search

  10. TK185

    Istanbul Airport

    6:40 AM

    IST

    11h

    Nonstop

    9:40 AM

    ORD

    S M T W T F S

  11. TK8609

    O'Hare Intl. Airport

    7:56 PM

    ORD

    4h 49m

    Nonstop

    10:45 PM

    SEA

    S M T W T F S

  12. TP1330

    Porto Airport

    6:10 PM

    OPO

    2h 20m

    Nonstop

    8:30 PM

    LGW

    S - T W - - S
    Search

  13. AS101

    Heathrow Airport

    2:45 PM

    LHR

    10h 5m

    Nonstop

    4:50 PM

    SEA

    S M T W T F S

  14. BA2667

    Porto Airport

    9:55 AM

    OPO

    2h 25m

    Nonstop

    12:20 PM

    LGW

    - M - W T F -
    Search

  15. BA049

    Heathrow Airport

    2:55 PM

    LHR

    9h 55m

    Nonstop

    4:50 PM

    SEA

    S M T W T F S

  16. KL1572

    Porto Airport

    11:35 AM

    OPO

    2h 35m

    Nonstop

    3:10 PM

    AMS

    S M T W T F S
    Search

  17. KL6033

    Schiphol Airport

    10:20 AM

    AMS

    10h 13m

    Nonstop

    11:33 AM

    SEA

    S M T W T F S

  18. TK1452

    Porto Airport

    4:40 PM

    OPO

    4h 35m

    Nonstop

    11:15 PM

    IST

    S M T W T F S
    Search

  19. TK203

    Istanbul Airport

    2:50 PM

    IST

    12h 30m

    Nonstop

    5:20 PM

    SEA

    S M T W T F S

  20. U22458

    Porto Airport

    11:35 AM

    OPO

    2h 25m

    Nonstop

    2:00 PM

    LTN

    S - T - T F S
    Search

  21. AS101

    Heathrow Airport

    2:45 PM

    LHR

    10h 5m

    Nonstop

    4:50 PM

    SEA

    S M T W T F S
Find more flights and airlines

About Porto Airport and Seattle Tacoma Intl. Airport

Learn about Porto Airport (OPO) and Seattle Tacoma Intl. Airport (SEA) — including location, terminals, transportation, and travel tips.

Flight distance 8,197.36 km
Cheapest one-way ticket price $599
Cheapest return ticket price $782

FAQs for Porto Airport to Seattle Tacoma Intl. Airport Flights

  • What is the transportation method from the main airport to downtown in Seattle?

    • The distance from Seattle-Tacoma International Airport to downtown is about 17 km. It takes about 30 minutes by taxi.
  • One-way flights from Porto Airport to Seattle Tacoma Intl. Airport currently start from $599, and round-trip fares start from $782. The current lowest fare is a easyJet flight departing on Mon, Nov 23; prices may vary depending on availability.
  • Based on Trip.com flight data for departures within the next 30 days with at most one stop, the average one-way price from Porto Airport to Seattle Tacoma Intl. Airport is $1,051. Prices may vary depending on the departure date, airline, and availability.
  • Enter Porto Airport and Seattle Tacoma Intl. Airport, select your departure date and number of passengers, then compare flights by price, flight duration, and baggage allowance. Once you've chosen a fare, review the change and refund rules, fill in passenger details, and pay to receive your booking confirmation.

Popular Destinations

Note: Prices shown on this page are estimated lowest price and include all taxes and fees found in the last 24 hours.

Book with no extra fees

Prices displayed in this page are all-inclusive prices (incl. taxes, fuel surcharge, civil aviation development fund, etc) with all fees confirmed before payment. Fees for luggage, meals, WLAN, or other additional services are also included as shown in the flight cards.

Real-time pricing updates

Prices, availability, and travel information on this page were updated within last 24 hours—even in real-time. The more popular the route, the more precise the data.

Change & Cancellation Policy

Trip.com displays flight cancellation and change policies for each flight ticket during the booking process, including fees and applicable conditions. Please check the following scenarios:
Voluntary cancellation/change:
To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy.
Cancellation/change due to a flight schedule change:
If the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.