What is the cheapest flight from Porto to Seattle?

In the last 3 days, the lowest price for a flight from Porto to Seattle was $351 for a one-way ticket and $834 for a round-trip. Visit our flight page for the latest deals!>/a>

Do I need a passport to fly between Porto and Seattle?

A passport is required to fly from Porto to Seattle. Visit our flight page for the latest deals!>/a>

Which aircraft models fly most regularly from Porto to Seattle?

We unfortunately don’t have that data for this specific route.

How does KAYAK find such low prices on flights from Porto to Seattle?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Porto to Seattle. Visit our flight page for the latest deals!>/a>

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Porto to Seattle?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seattle from Porto is likely to change within 7 days, so travelers know whether to wait or book now. Visit our flight page for the latest deals!>/a>

What is the Hacker Fare option on flights from Porto to Seattle?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Seattle with an airline and back to Porto with another airline. Booking your flights between Porto and SEA can sometimes prove cheaper using this method. Visit our flight page for the latest deals!>/a>

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Porto to Seattle?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Seattle from Porto up to 3 days before/after your preferred dates. You can then pick the flights that suit you best. Visit our flight page for the latest deals!>/a>

What is the cheapest layover airport when flying from Porto to Seattle?

Flights via Amsterdam (AMS) offer the most affordable fares, with an average round-trip price of $854.

What is the most popular layover airport when flying from Porto to Seattle?

Newark (EWR) is the top choice – 33% of KAYAK users who clicked on 1-stop flights from Porto to Seattle picked an itinerary connecting there.

Which layover airport has the quickest connection when flying from Porto to Seattle?

If you prefer a quick connection, Newark (EWR) often has the shortest layovers from Porto to Seattle, with an average of 2h 17m .

Which layover airport offers the shortest total travel time from Porto to Seattle?

Consider flying via Frankfurt am Main (FRA) for the shortest journey. The average one-way travel time for flights connecting there is 14h 05m .

$351 CHEAP FLIGHTS from Porto to Seattle (OPO - SEA)

OPO - SEA

KAYAK searches hundreds of travel sites at once for deals on flights to Seattle

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41.299.237 searches in the past 7 days on KAYAK

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Cheapest round-trip

$834

Scandinavian Airlines

Thu 5/21Sat 5/30

OPO - SEA • 1 stop

Cheapest one-way

$351

Typical prices: $887-$1,020

Multiple Airlines

Mon 4/27

OPO - SEA • 3 stops

Nonstop flights

Not available

There are currently no direct flights between Porto and Seattle. You'll need at least 1 connection.

Insights

Top layover airports

Amsterdam (AMS)

Cheapest • Avg $854 (round-trip)

Frankfurt am Main (FRA)

Shortest trip • 14h 05m (one-way)

Insights

Start a new search

KAYAK searches 100s of sites at once to find you the best travel deals.

We hope you love your trip to Seattle!

Flight Deals

Cheap Flights from Porto to Seattle (OPO-SEA)

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Recent round-trip flight deals from Porto to Seattle

Thu, May 21 - Sat, May 30

11:50 am - 1:45 pm

OPO

SEA

33h 55m

1 stop

3:55 pm - 5:40 pm

SEA

OPO

17h 45m

1 stop

$834Scandinavian Airlines

Wed, Apr 15 - Wed, Apr 22

5:05 am - 5:55 pm

OPO

SEA

20h 50m

3 stops

3:40 pm - 9:10 am

SEA

OPO

33h 30m

3 stops

$858Multiple Airlines

Wed, Apr 15 - Wed, Apr 22

6:20 am - 4:59 pm

OPO

SEA

18h 39m

1 stop

6:50 pm - 11:25 pm

SEA

OPO

20h 35m

1 stop

$905Lufthansa

Wed, May 20 - Sun, May 31

5:25 pm - 9:40 am

OPO

SEA

48h 15m

2 stops

3:55 pm - 8:30 pm

SEA

OPO

20h 35m

1 stop

$911Multiple Airlines

Sat, Apr 25 - Sat, May 2

10:45 am - 5:15 pm

OPO

SEA

38h 30m

1 stop

7:10 pm - 3:50 pm

SEA

OPO

36h 40m

1 stop

$914Turkish Airlines

Fri, May 22 - Fri, Jun 5

5:00 am - 11:42 am

OPO

SEA

14h 42m

1 stop

1:30 pm - 3:25 pm

SEA

OPO

17h 55m

1 stop

$918Delta

Thu, Apr 2 - Mon, Apr 6

4:40 pm - 5:15 pm

OPO

SEA

32h 35m

1 stop

7:10 pm - 3:40 pm

SEA

OPO

36h 30m

1 stop

$920Turkish Airlines

Sat, Apr 25 - Sat, May 2

6:00 am - 8:53 pm

OPO

SEA

22h 53m

2 stops

2:10 pm - 10:45 pm

SEA

OPO

24h 35m

1 stop

$923Lufthansa

Thu, Apr 2 - Mon, Apr 6

6:00 am - 6:00 pm

OPO

SEA

20h 00m

2 stops

8:51 am - 9:45 am

SEA

OPO

16h 54m

2 stops

$925United Airlines

Thu, Apr 2 - Mon, Apr 6

7:10 pm - 4:30 pm

OPO

SEA

29h 20m

1 stop

6:40 pm - 10:00 pm

SEA

OPO

19h 20m

1 stop

$928Multiple Airlines

Booking Insights

KAYAK's insights & trends for Porto to Seattle flights

Get data-powered insights and trends into flights from Porto to Seattle to help you find the cheapest flights, the best time to fly and much more.

Airlines

Layovers

Which airlines provide the cheapest flights from Porto to Seattle?

In the past 3 days, the cheapest round-trip tickets from Porto to Seattle were found on Scandinavian Airlines ($834) and Lufthansa ($905).

Find deals

Low season	May
High season	August
Cheapest flight	$351

Best time to beat the crowds with an average 14% drop in price.

Most popular time to fly and prices are also 4% lower on average.

Flight from Porto to Seattle

When to book flights from Porto to Seattle

Are your dates flexible? Find out the best times to travel from Porto to Seattle based on our flight data from the last year. Discover the cheapest month and even day to fly.

Estimated round-trip price

KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

What is the cheapest flight from Porto to Seattle?
In the last 3 days, the lowest price for a flight from Porto to Seattle was $351 for a one-way ticket and $834 for a round-trip.
Do I need a passport to fly between Porto and Seattle?
A passport is required to fly from Porto to Seattle.
Which aircraft models fly most regularly from Porto to Seattle?
We unfortunately don’t have that data for this specific route.
How does KAYAK find such low prices on flights from Porto to Seattle?
KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Porto to Seattle.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Porto to Seattle?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seattle from Porto is likely to change within 7 days, so travelers know whether to wait or book now.
What is the Hacker Fare option on flights from Porto to Seattle?
Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Seattle with an airline and back to Porto with another airline. Booking your flights between Porto and SEA can sometimes prove cheaper using this method.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Porto to Seattle?
Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Seattle from Porto up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Everything you need to know for your flight from Porto to Seattle

Airports

Cabin class

Complete your trip

Direct Flights

Flights to other cities

Origins

Other airports

Return flight deals

Information on your arrival and departure airports

Porto (OPO)

Seattle (SEA)

OPO - SEA

$351 Find Cheap Flights from Porto to Seattle

KAYAK searches hundreds of travel sites at once for deals on flights to Seattle

Everything you should know

Cheap Flights from Porto to Seattle (OPO-SEA)

Recent round-trip flight deals from Porto to Seattle

Recent one-way flight deals from Porto to Seattle

Recent last minute flight deals from Porto to Seattle

KAYAK's insights & trends for Porto to Seattle flights

Get data-powered insights and trends into flights from Porto to Seattle to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from Porto to Seattle?

In the past 3 days, the cheapest round-trip tickets from Porto to Seattle were found on Scandinavian Airlines ($834) and Lufthansa ($905).

What is the most popular layover airport when flying from Porto to Seattle?

Newark (EWR) is the top choice – 33% of KAYAK users who clicked on 1-stop flights from Porto to Seattle picked an itinerary connecting there.

What is the cheapest layover airport when flying from Porto to Seattle?

Flights via Amsterdam (AMS) offer the most affordable fares, with an average round-trip price of $854.

Which layover airport offers the shortest total travel time from Porto to Seattle?

Consider flying via Frankfurt am Main (FRA) for the shortest journey. The average one-way travel time for flights connecting there is 14h 05m.

Which layover airport has the quickest connection when flying from Porto to Seattle?

If you prefer a quick connection, Newark (EWR) often has the shortest layovers from Porto to Seattle, with an average of 2h 17m.

Good to know

When to book flights from Porto to Seattle

FAQs for booking flights from Porto to Seattle

What is the cheapest flight from Porto to Seattle?

In the last 3 days, the lowest price for a flight from Porto to Seattle was $351 for a one-way ticket and $834 for a round-trip.

Do I need a passport to fly between Porto and Seattle?

A passport is required to fly from Porto to Seattle.

Which aircraft models fly most regularly from Porto to Seattle?

We unfortunately don’t have that data for this specific route.

How does KAYAK find such low prices on flights from Porto to Seattle?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Porto to Seattle.

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Porto to Seattle?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seattle from Porto is likely to change within 7 days, so travelers know whether to wait or book now.

What is the Hacker Fare option on flights from Porto to Seattle?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Seattle with an airline and back to Porto with another airline. Booking your flights between Porto and SEA can sometimes prove cheaper using this method.

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Porto to Seattle?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Seattle from Porto up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Everything you need to know for your flight from Porto to Seattle

Information on your arrival and departure airports

Cabin class types available on flights from Porto to Seattle

Complete your trip to Seattle with a hotel stay or car rental

Find direct flights to and from Porto and Seattle

Flights to other popular destinations

Flights from domestic origins to Seattle

Choose which airport to fly into in Seattle

Find deals for your return flight