Cheap Flights from Porto to Seattle

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Flight deals from Porto Airport to Seattle

Looking for a cheap last-minute deal or the best return flight from Porto Airport to Seattle? If you want to travel next month, return fares start from R 11,293. Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Porto to Seattle

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Porto to Seattle flights are currently cheapest in May.

Porto to Seattle: Flight information

The things to know before you go.
Cheapest flight foundR 6,619
Cheapest month to flyMay

Finding cheap flights from Porto to Seattle: Frequently asked questions

There are 4 airports in Seattle: Seattle Lake Union SPB, Seattle Boeing Fld, Seattle / Tacoma International, and Paine Field.
The best price we found for a return flight from Porto to Seattle is R 11,328. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Porto to Seattle. But we found flights with one or more stops from R 11,293.
As of March 2026, there are no flights flying from Porto to Seattle.
The cheapest month to fly from Porto to Seattle is usually April.
If you're flying from Porto Airport, the cheapest airport near Seattle is Seattle / Tacoma International – which is 19.5 km away from the centre of Seattle. We've found flights into this airport from R 11,328.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Porto Airport to Seattle on Friday, 17 April 2026.
No airlines currently offer direct flights between Porto Airport and Seattle. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Seattle but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Seattle is around 40 days in advance, so don’t leave your flight to the last minute.
In March, the average temperature is usually around 6°C. August is typically the warmest month in Seattle, when it usually averages around 23°C. You can expect the least rain in July. The coldest month is December, with temperatures averaging 0°C. The rainiest month is November.
Currently, Wizz Air Malta offers the cheapest flight tickets to Seattle.

Flying from Porto Airport (OPO) to Seattle: what you need to know

  • The timezone in Seattle is UTC-7. The city is seven hours behind Porto, where Porto Airport is located.

  • For hassle-free travel, turn up at the airport two hours ahead of international flights and one hour before domestic departures. This will give you enough time to catch your OPO to Seattle flight.

  • Heading away during a peak time like public or school holidays? Expect longer queues at check-in and security. Give yourself extra leeway and arrive up to four hours before international flights and two hours before domestic departures.

  • We make it easy to book flight tickets from OPO to Seattle with a stopover. To see the options, deselect 'Direct flights only.' Then, choose a flight that has a stop long enough to see the sights of the city of your choice. Top stopovers include:

    • Frankfurt Airport (FRA)

    • John F. Kennedy International Airport (JFK)

    • Charles de Gaulle Airport (CDG)

  • Travelling from central Porto to OPO takes about 50 minutes on public transport. If you ride-share, drive or take a cab, you'll cover the 11 kilometres in 20 minutes or so, depending on traffic conditions.

  • Want a stress-free start to your journey? Stay near OPO. Whether you've booked an early flight from Porto Airport to Seattle or want to avoid feeling rushed, these hotels are worth a look:

  • 74.49% of flights that leave from Porto Airport land at their destination on time.

How to find the cheapest flights from Porto Airport (OPO) to Seattle

  • R 6,619 is the lowest price we've found for a one-way Porto Airport to Seattle flight. A round-trip flight ticket right now is R 11,328. Depending on the availability and when you book, these fares may change.

  • To pick up cheap flights from OPO to Seattle, book ahead. Airlines typically offer lower fares when flights are first released.

  • Finding cheap tickets from Porto Airport to Seattle is more likely if you can be flexible with your travel plans. Try using the 'Whole month' search function to access the lowest fares across each month and land an epic deal.

  • You don't need to keep looking every day to find out if fares have dropped when you create a Price Alert. We'll update you the moment there's an even bigger deal on cheap flights from OPO to Seattle.

  • Tailor your flights with filters. Pick your ideal arrival and departure times, total journey duration and airlines. You can also sort results by 'Fastest,' 'Best' or 'Cheapest' flights from Porto Airport to Seattle.

Airports in Seattle

Seattle-Tacoma International Airport (SEA)

  • Seattle-Tacoma International Airport (SEA) to central Seattle takes about 20 minutes by car. The centre is roughly 23 kilometres away.

  • When travelling on public transport, expect a journey time of about 55 minutes.

  • If you have a late flight from Porto Airport to Seattle, few things beat the convenience of staying near the terminal. Grab your bags from the carousel and then be showered and sleeping not long after at one of these accommodation options near SEA:

  • Pick up a Seattle-Tacoma International Airport rental car and explore Seattle and beyond with your own set of wheels. Thrifty, Europcar and Budget are popular outlets you can book with here.

  • To get the lowest price, book your ride from Seattle-Tacoma International Airport about one week in advance of your flight from OPO to Seattle.

Lake Union Sea Plane Base Airport (LKE)

  • Lake Union Sea Plane Base Airport (LKE) is roughly 3 kilometres from central Seattle. Following your flight from Porto Airport to Seattle, it'll take you around 10 minutes to get to the heart of the city in a ride-share or cab.

  • If you're catching public transport, it'll take about 25 minutes.

  • Place the 'Do not disturb' sign on your door and relax at a hotel near LKE. Here are a few options where you can take a load off after your OPO to Seattle flight:

Best time to go to Seattle

  • Plan your trip to Seattle during the high season if you want a busy atmosphere, but remember that prices may be higher. Alternatively, book flights from Porto Airport to Seattle in the low season when prices are cheaper and it's quieter.

  • Lock in a Porto Airport to Seattle flight ticket with a departure in August if you're eager to experience the city during its warmest month. Expect temperatures to range from 12ºC (54ºF) to 28ºC (82ºF).

  • Look for cheap tickets from OPO to Seattle in February if you like travelling in cooler conditions. Temperatures are at their lowest then, ranging between -1ºC (30ºF) and 11ºC (52ºF) on average.

More about Seattle

  • When it comes to looking for somewhere to rest your head, you'll find the best places to stay in Seattle right here. Browse these options once you've booked your flight from Porto Airport to Seattle:

  • LMN Architects and Greyhound: Bus Station are a couple of top attractions to add to your Seattle itinerary. Continue your sightseeing adventures at Boeing Radiation Effects Lab.

Explore more of United States

  • Seattle is easy to fall in love with, but there are so many other parts of United States waiting to be discovered. About 241 kilometres south of Seattle, a visit to Portland will fill your itinerary to the brim. Start with leading sights like Pioneer Courthouse Square, Portland Japanese Garden and Pittock Mansion.

  • Around 370 kilometres east of Seattle, Spokane is another favourite stop in United States. Start your sightseeing at Manito Park, Northwest Museum of Arts & Culture and Spokane Falls.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.