Cheap Flights from Porto to Seattle

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Flight deals from Porto 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 Rs237,211. 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 August.

Porto to Seattle: Flight information

The things to know before you go.
Cheapest flight foundRs114,381
Cheapest month to flyAugust

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 Rs221,614. 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 Rs221,614.
As of May 2026, there are no flights flying from Porto to Seattle.
The cheapest month to fly from Porto to Seattle is usually August.
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 Rs221,614.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Porto Airport to Seattle on Sunday, 9 August 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 May, the average temperature is usually around 12°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, TAP Air Portugal offers the cheapest flight tickets to Seattle.

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

  • Porto Airport is located in Porto. Following the UTC-8 timezone, Seattle is eight hours behind Porto.

  • For a relaxed start to your OPO to Seattle flight, leave plenty of time for things like baggage drop and finding your gate. Turning up two hours ahead of international departures and one hour before domestic flights is the general travel rule.

  • During popular months like August, you'll want to get to the airport earlier than usual. Arrive two hours before domestic departures and four hours ahead for an international flight whenever you're flying during high season in general.

  • We make it a breeze to book plane tickets from OPO to Seattle with a stopover. To see all your options, deselect 'Direct flights only.' Next, pick a flight with a stop long enough to explore your chosen city. Some popular stopovers include:

    • Frankfurt Airport (FRA)

    • Paris Charles de Gaulle Airport (CDG)

    • New York John F. Kennedy International Airport (JFK)

  • Located around 11 kilometres from the centre of Porto, OPO can be reached in about 20 minutes by car (depending on traffic). Travelling on public transport will take roughly 30 minutes.

  • Want a relaxed start to your journey? Stay near OPO. Whether you're taking an early flight from Porto Airport to Seattle or don't want departure day to feel hectic, these hotels are worth a look:

  • Of the flights that depart from Porto Airport, 75% touch down on time at their destination.

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

  • The lowest price we've found for a one-way Porto Airport to Seattle flight is Rs114,381. The cheapest price for a return flight is Rs221,614. Remember fares can change due to demand at the time of booking.

  • Booking early is often the key to scoring a cheap flight from OPO to Seattle. Flight prices rise as demand increases, so the nearer your departure date, the more it could cost you.

  • Landing cheap tickets from Porto Airport to Seattle is easier if you can be flexible with your travel dates. Use the 'Whole month' function to get the lowest prices across each month and land an epic deal.

  • You don't need to keep checking in to find out if fares have dropped when you create a Price Alert. We'll let you know the moment there's an even better deal on cheap flights from OPO to Seattle.

  • Save on your flight from Porto Airport to Seattle with the help of our filters. Choose your ideal duration, number of stops and airlines, then sort the results by 'Cheapest' for the best deals.

Airports in Seattle

Seattle-Tacoma International Airport (SEA)

  • The distance from Seattle-Tacoma International Airport (SEA) to central Seattle is roughly 23 kilometres. It takes around 25 minutes to get to the centre driving.

  • It takes around 35 minutes if you're travelling by public transport.

  • Book a hotel close to SEA if you have a late flight from Porto Airport to Seattle. Choose one of these options and make arrival day easier:

  • Booking your vehicle from Seattle-Tacoma International Airport around one week ahead of your flight from OPO to Seattle can help you get the lowest rate.

Seattle Paine Field International Airport (PAE)

  • Once your flight from Porto Airport to Seattle has hit the runway, you can get to the city centre in about 40 minutes by car. Central Seattle is roughly 40 kilometres from Seattle Paine Field International Airport (PAE).

  • The trip will take about 1 hour 30 minutes on public transport.

  • You'll find some great places ready to welcome you near PAE. Kick back and get cosy after your OPO to Seattle flight at any of these perfectly located options:

  • Get the vehicle you actually want, not just what's left over, by reserving your ride from PAE ahead of time. You'll also avoid paying more than you have to, especially during busy airport times.

King County International Airport (BFI)

  • Head to the city centre after your flight from Porto Airport to Seattle has arrived. Central Seattle is about 11 kilometres from King County International Airport (BFI) and takes roughly 20 minutes to reach by car.

  • If you're using public transport, the journey time is about 35 minutes.

  • If you don't want to make your way to the centre, head for a hotel close to BFI. Get settled at one of these options after your OPO to Seattle flight:

  • Rental providers sometimes offer discounts for early bookings, so secure your vehicle from BFI well ahead of your flight from Porto Airport to Seattle. A bit of planning goes a long way in savings.

Best time to go to Seattle

  • It's time to pick your dates for your flight from Porto Airport to Seattle. July is the busiest month to visit Seattle. If you want a quieter vibe, go in December.

  • Before booking a Porto Airport to Seattle plane ticket, think about the kind of weather forecast you're hoping for. August is the warmest month in Seattle, with temperatures ranging from 12ºC to 28ºC.

  • Search for cheap tickets from OPO to Seattle in February if you want to travel in cooler conditions. Temperatures are at their lowest then, ranging between -1ºC and 11ºC on average.

More about Seattle

  • Start your Seattle trip off on the right foot by choosing the perfect place to stay. After booking your flight from Porto Airport to Seattle, explore our range of hotels including:

  • All great adventures should include a little sightseeing. Pike Place Market, Space Needle and Seattle Skyline are essential stops on your Seattle itinerary.

Explore more of the United States

  • You've seen Seattle, now it's time to explore other corners of the United States. Travel about 241 kilometres south to Portland to check off its leading attractions. From Portland Japanese Garden to Peninsula Park Rose Garden and Beyond Van Gogh Portland, you'll have a full itinerary ahead.

  • If you're ready to explore another great destination in the United States, head for Spokane, about 370 kilometres east of Seattle. Riverside State Park, Spokane Falls (Upper Falls) and Cathedral of Our Lady of Lourdes are key highlights.

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