Cheap flights from Seattle to Porto from $594

1 adult
Economy
0 bags
From?
To?
Sat 9/30
Sat 10/7

Deals available from 900+ travel sites.

Flight information for Seattle to Porto
(SEA to OPO)

Find info about flight duration, direct flights, and airports for your flight from Seattle to Porto

Best Price Found

$692

Fastest flight time

13h 55m

Direct flights

None

Airports in Porto

1 airport
The best one-way flight to Porto from Seattle in the past 72 hours is $692. The best round-trip flight deal from Seattle to Porto found on momondo in the last 72 hours is $638.
The fastest flight from Seattle to Porto takes 13h 55m
There are no direct flights from Seattle to Porto. Popular non-direct route for this connection is Seattle/Tacoma Intl Airport - Porto Airport.
There is 1 airport near Porto: Porto (OPO)

How to get the cheapest flight ticket from Seattle to Porto

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly from Seattle to Porto?

March. The cheapest time of year to fly to Porto from Seattle is March. Most expensive is July

What is the cheapest day to depart Seattle for Porto?

Monday. The cheapest day of the week is typically Monday. The most expensive is typically Saturday

When is the cheapest time to fly from Seattle to Porto?

In the morning. Seattle to Porto flights are approximately 43% more expensive in the afternoon than in the morning

What is the cheapest airline that flies to Porto from Seattle?

American Airlines. American Airlines, British Airways, and Delta are the most popular carriers operating from Seattle to Porto

What is the cheapest Seattle to Porto flight route?

Seattle/Tacoma Intl - Porto. Fly from Seattle/Tacoma Intl to Porto for the best Seattle - Porto flight prices

How far in advance should you book Seattle to Porto flights?

60 days before. The cheapest time to buy a flight from Seattle to Porto is approximately 60 days to departure

Can stopping save me money on Seattle to Porto flights?

No. A direct flight is the cheapest option for a flight between Seattle to Porto.

If you are looking to fly from Seattle to Porto, you are most likely going to fly from Seattle/Tacoma Intl Airport to Porto Airport, the most popular airports on that route. The cheapest route from Seattle to Porto is SEA — OPO with an average price of $638 RT during the month of September.

Seattle/Tacoma Intl Airport (SEA) to Porto Airport (OPO)$638
Search Flight Deals

Easily compare round-trip flights from Seattle to Porto

Below you can see the best fares for your round-trip flight route over the next six months. All fares were found on momondo this week. Browse the quickest and cheapest flights from Seattle to Porto by changing tabs
United Airlines
Oct 17
SEA2:09 amSeattle/Tacoma Intl
19h 36m
1 stop
OPO2:45 amPorto
Oct 24
OPO2:00 amPorto
14h 20m
1 stop
SEA4:20 pmSeattle/Tacoma Intl
Lufthansa
Oct 17
SEA9:15 amSeattle/Tacoma Intl
26h 10m
2 stops
OPO4:25 pmPorto
Oct 24
OPO2:00 amPorto
19h 43m
2 stops
SEA9:43 pmSeattle/Tacoma Intl
Delta
Oct 17
SEA9:35 amSeattle/Tacoma Intl
17h 55m
1 stop
OPO8:30 amPorto
Oct 25
OPO1:00 amPorto
14h 20m
1 stop
SEA3:20 pmSeattle/Tacoma Intl
Multiple Airlines
Oct 17
SEA3:55 pmSeattle/Tacoma Intl
13h 25m
1 stop
OPO10:20 amPorto
Oct 25
OPO4:20 amPorto
21h 29m
2 stops
SEA1:49 amSeattle/Tacoma Intl
British Airways
Oct 17
SEA3:55 pmSeattle/Tacoma Intl
13h 25m
1 stop
OPO10:20 amPorto
Oct 23
OPO4:35 pmPorto
23h 00m
1 stop
SEA3:35 pmSeattle/Tacoma Intl
Iberia
Oct 17
SEA9:58 amSeattle/Tacoma Intl
21h 57m
2 stops
OPO12:55 pmPorto
Oct 23
OPO4:35 pmPorto
32h 45m
2 stops
SEA1:20 amSeattle/Tacoma Intl

Find the cheapest one-way flights from Seattle to Porto

If you're looking for one-way flights from Seattle to Porto, view some of our deals below provided by Turkish Airlines
Multiple Airlines
Oct 1
SEA3:26 amSeattle/Tacoma Intl
20h 49m
2 stops
OPO5:15 amPorto
Turkish Airlines
Oct 1
SEA1:50 pmSeattle/Tacoma Intl
37h 55m
1 stop
OPO8:45 amPorto
Multiple Airlines
Oct 1
SEA3:26 amSeattle/Tacoma Intl
20h 49m
2 stops
OPO5:15 amPorto

Search last-minute flights to Porto from Seattle

Find and compare round-trip flight prices for your last-minute flight from Seattle to Porto
Turkish Airlines
Oct 1
SEA1:50 pmSeattle/Tacoma Intl
37h 55m
1 stop
OPO8:45 amPorto
Oct 20
OPO12:15 pmPorto
32h 05m
1 stop
SEA8:20 pmSeattle/Tacoma Intl
Multiple Airlines
Oct 1
SEA7:48 pmSeattle/Tacoma Intl
31h 57m
2 stops
OPO8:45 amPorto
Oct 20
OPO12:15 pmPorto
37h 48m
2 stops
SEA2:03 amSeattle/Tacoma Intl
Iberia
Oct 1
SEA9:10 amSeattle/Tacoma Intl
22h 45m
2 stops
OPO12:55 pmPorto
Oct 20
OPO8:25 amPorto
40h 55m
2 stops
SEA1:20 amSeattle/Tacoma Intl
Turkish Airlines
Oct 1
SEA1:50 pmSeattle/Tacoma Intl
37h 55m
1 stop
OPO8:45 amPorto
Oct 20
OPO12:15 pmPorto
32h 05m
1 stop
SEA8:20 pmSeattle/Tacoma Intl
Turkish Airlines
Oct 1
SEA1:50 pmSeattle/Tacoma Intl
37h 55m
1 stop
OPO8:45 amPorto
Oct 20
OPO12:15 pmPorto
37h 48m
2 stops
SEA2:03 amSeattle/Tacoma Intl
Turkish Airlines
Oct 1
SEA1:50 pmSeattle/Tacoma Intl
37h 55m
1 stop
OPO8:45 amPorto
Oct 20
OPO12:15 pmPorto
37h 05m
2 stops
SEA1:20 amSeattle/Tacoma Intl

Best airlines flying from Seattle to Porto

Compare and see reviews for airlines that fly from Seattle to Porto with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $640Free CancellationRating
7.1
2,890 reviews
Search American Airlines flights
Air FrancePriceFrom $655Free CancellationRating
7.3
481 reviews
Search Air France flights
KLMPriceFrom $660Free CancellationRating
7.5
355 reviews
Search KLM flights
DeltaPriceFrom $704Free CancellationRating
7.8
1,565 reviews
Search Delta flights
LufthansaPriceFrom $756Free CancellationRating
6.7
1,054 reviews
Search Lufthansa flights
British AirwaysPriceFrom $782Free CancellationRating
6.4
2,315 reviews
Search British Airways flights
United AirlinesPriceFrom $917Free CancellationRating
7.2
2,716 reviews
Search United Airlines flights

United Airlines flights from Seattle to Porto

Our best United Airlines deals on Seattle to Porto flight tickets
United Airlines
Oct 17
SEA2:09 amSeattle/Tacoma Intl
19h 36m
1 stop
OPO2:45 amPorto
Oct 24
OPO2:00 amPorto
14h 20m
1 stop
SEA4:20 pmSeattle/Tacoma Intl
United Airlines
Oct 17
SEA4:10 amSeattle/Tacoma Intl
17h 35m
2 stops
OPO2:45 amPorto
Oct 26
OPO2:00 amPorto
14h 20m
1 stop
SEA4:20 pmSeattle/Tacoma Intl
United Airlines
Nov 1
SEA4:20 amSeattle/Tacoma Intl
24h 25m
3 stops
OPO8:45 amPorto
Nov 9
OPO1:00 amPorto
24h 45m
2 stops
SEA1:45 amSeattle/Tacoma Intl

Lufthansa flights from Seattle to Porto

Our best Lufthansa deals on Seattle to Porto flight tickets
Lufthansa
Oct 17
SEA9:15 amSeattle/Tacoma Intl
26h 10m
2 stops
OPO4:25 pmPorto
Oct 24
OPO2:00 amPorto
19h 43m
2 stops
SEA9:43 pmSeattle/Tacoma Intl
Lufthansa
Oct 17
SEA10:20 amSeattle/Tacoma Intl
17h 20m
1 stop
OPO8:40 amPorto
Oct 24
OPO2:00 amPorto
14h 20m
1 stop
SEA4:20 pmSeattle/Tacoma Intl
Lufthansa
Oct 20
SEA10:20 amSeattle/Tacoma Intl
24h 25m
1 stop
OPO3:45 pmPorto
Oct 25
OPO2:00 amPorto
19h 43m
2 stops
SEA9:43 pmSeattle/Tacoma Intl

  • How far is Seattle/Tacoma Intl to Porto by plane?

    Seattle/Tacoma Intl and Porto are 5083.1 mi apart from one another. Typically, this will take 12h 45m by plane in normal conditions.

  • When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Porto Airport?

    Prices for flights from Seattle/Tacoma Intl Airport to Porto Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Porto Airport?

  • How old do you have to be to fly from Seattle/Tacoma Intl Airport to Porto Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Porto Airport.

  • What documentation or ID do you need to fly to Porto Airport?

    The travel and health documents you'll need for your trip to Porto Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Porto Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.


Alternative routes for Seattle to Porto

Compare alternative flights to and from nearby airports and cities to discover the best prices and most convenient flight times
Seattle to Lisbon Flights
Fastest flight time14h 10m
Cheapest price$451
Seattle to Ponta Delgada Flights
Fastest flight time14h 44m
Cheapest price$897
Spokane to Lisbon Flights
Fastest flight time17h 05m
Cheapest price$708
Seattle to Faro Flights
Fastest flight time17h 20m
Cheapest price$1,159

Similar Seattle to Porto flights

Flexible with your destination? Broaden your search and find flights similar to your Seattle to Porto route

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to Porto?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Porto from Seattle.

Can I find flights from Seattle to Porto with flexible booking policies on momondo?

Yes. All flights to Porto from Seattle on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Seattle to Porto?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Seattle to Porto.

I’m not ready to book a flight from Seattle to Porto right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Porto, momondo offers a useful price alert feature which will track prices for flights to Porto from Seattle and alert you when they change.


An easier way to manage your Porto trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.