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Cheap flights from Seattle to Portugal from $316

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Portugal departing on 10/19. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Cheap round-trip flights

KAYAK's recommended round-trip deals from the most popular airlines that fly from Seattle to Portugal.
Icelandair Logo
11:30 pm - 9:20 pmSEA-LIS
13h 50m1 stop
Icelandair Logo
10:20 pm - 11:25 amLIS-SEA
21h 05m1 stop
$516Icelandair
Find Deal
Sat, Aug 9 - Thu, Aug 21
Icelandair Logo
11:30 pm - 9:20 pmSEA-LIS
13h 50m1 stop
Icelandair Logo
10:20 pm - 11:25 amLIS-SEA
21h 05m1 stop
$517Icelandair
Find Deal
Sat, Aug 9 - Thu, Aug 21
Air Canada Logo
7:20 am - 8:20 amSEA-LIS
17h 00m1 stop
Air Canada Logo
11:00 am - 10:40 amLIS-SEA
31h 40m1 stop
$576Air Canada
Find Deal
Fri, Oct 17 - Sun, Nov 9
United Airlines Logo
11:55 am - 9:45 amSEA-OPO
13h 50m1 stop
United Airlines Logo
12:35 pm - 9:50 pmOPO-SEA
16h 15m1 stop
$682United Airlines
Find Deal
Sun, Oct 19 - Sat, Nov 1
United Airlines Logo
11:00 pm - 9:45 amSEA-OPO
26h 45m2 stops
United Airlines Logo
12:35 pm - 9:50 pmOPO-SEA
16h 15m1 stop
$686United Airlines
Find Deal
Sat, Oct 18 - Sat, Nov 1
Delta Logo
1:30 pm - 3:30 pmSEA-OPO
18h 00m1 stop
Delta Logo
5:00 am - 12:50 pmOPO-SEA
14h 50m1 stop
$729Delta
Find Deal
Sun, Oct 19 - Wed, Oct 29
British Airways Logo
1:29 pm - 3:40 pmSEA-LIS
18h 11m2 stops
British Airways Logo
3:40 pm - 12:20 pmLIS-SEA
27h 40m1 stop
$800British Airways
Find Deal
Wed, Oct 1 - Fri, Oct 31
Delta Logo
11:15 am - 3:30 pmSEA-OPO
20h 15m2 stops
Delta Logo
5:00 am - 12:50 pmOPO-SEA
14h 50m1 stop
$819Delta
Find Deal
Wed, Oct 8 - Wed, Oct 29
British Airways Logo
1:30 pm - 12:45 pmSEA-LIS
15h 15m1 stop
British Airways Logo
7:15 am - 11:10 amLIS-SEA
35h 55m1 stop
$828British Airways
Find Deal
Mon, May 12 - Mon, May 19
Air France Logo
1:30 pm - 4:05 pmSEA-PDL
19h 35m1 stop
Air France Logo
7:55 am - 12:11 amPDL-SEA
23h 16m2 stops
$10,436Air France
Find Deal
Fri, Sep 12 - Tue, Sep 23

Icelandair flights from Seattle to Portugal

Our best Icelandair deals on Seattle to Portugal flight tickets
Icelandair
Aug 9
SEA11:30 pmSeattle/Tacoma Intl
13h 50m
1 stop
LIS9:20 pmLisbon Humberto Delgado
Aug 21
LIS10:20 pmLisbon Humberto Delgado
21h 05m
1 stop
SEA11:25 amSeattle/Tacoma Intl
Icelandair
Aug 9
SEA11:30 pmSeattle/Tacoma Intl
13h 50m
1 stop
LIS9:20 pmLisbon Humberto Delgado
Aug 21
LIS10:20 pmLisbon Humberto Delgado
21h 05m
1 stop
SEA11:25 amSeattle/Tacoma Intl
Icelandair
Aug 6
SEA7:00 pmSeattle/Tacoma Intl
18h 20m
1 stop
LIS9:20 pmLisbon Humberto Delgado
Aug 21
LIS10:20 pmLisbon Humberto Delgado
21h 05m
1 stop
SEA11:25 amSeattle/Tacoma Intl

Aer Lingus flights from Seattle to Portugal

Our best Aer Lingus deals on Seattle to Portugal flight tickets
Aer Lingus
May 26
SEA7:35 pmSeattle/Tacoma Intl
18h 00m
1 stop
LIS9:35 pmLisbon Humberto Delgado
Jun 10
LIS10:15 pmLisbon Humberto Delgado
27h 35m
1 stop
SEA5:50 pmSeattle/Tacoma Intl
Aer Lingus
Jun 3
SEA7:35 pmSeattle/Tacoma Intl
18h 00m
1 stop
LIS9:35 pmLisbon Humberto Delgado
Jun 10
LIS10:15 pmLisbon Humberto Delgado
27h 35m
1 stop
SEA5:50 pmSeattle/Tacoma Intl
Aer Lingus
Jun 3
SEA7:35 pmSeattle/Tacoma Intl
18h 00m
1 stop
LIS9:35 pmLisbon Humberto Delgado
Jun 10
LIS10:15 pmLisbon Humberto Delgado
27h 35m
1 stop
SEA5:50 pmSeattle/Tacoma Intl

See travel insights to Portugal from

How to get the cheapest flight ticket from Seattle to Portugal

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 to Portugal?

The cheapest month to fly to Portugal from Seattle is in January. Flight prices, which tend to average around $765, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of January, then book flights to Portugal from Seattle during February instead. Flights to Portugal in February, while not as cheap as those in January, still average around $766.

What is the cheapest day to depart on your flight to Portugal?

According to our data, Monday is the cheapest day to fly to Portugal from Seattle. The lowest ticket price found for a Monday departure recently was $908. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. The most expensive day to fly to Portugal is Friday, with ticket prices averaging around $1,111.

What is the cheapest time of day to depart on your flight to Portugal?

Our most recent data shows that the best time of day to fly to Portugal is in the afternoon. Flights from Seattle to Portugal during this time can be as low as $959. At noon is when there is more demand to fly to Portugal, so prices are often more expensive at around $1,074 per ticket.

How far in advance should I book a flight to Portugal?

You are more likely to see cheaper flights to Portugal from Seattle when booking 24 weeks ahead of your departure date. In general, you can expect to find flights to Portugal for around $978 when searching 24 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Portugal from Seattle for as low as $909 on momondo.

Cheap Seattle to Portugal flight deals and tips

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

Best Price Found

$316

Fastest flight time

13h 20m

Direct flights

None

Airports in Portugal

5 airports
The best one-way flight to Portugal from Seattle in the past 72 hours is $316. The best round-trip flight deal from Seattle to Portugal found on momondo in the last 72 hours is $516.
The fastest flight from Seattle to Portugal takes 13h 20m
There are no direct flights from Seattle to Portugal. Popular non-direct routes for this connection are Seattle/Tacoma Intl Airport - Faro Airport, Seattle/Tacoma Intl Airport - Lisbon Humberto Delgado Airport and Seattle/Tacoma Intl Airport - Porto Airport.
There are 5 airports near Portugal: Faro (FAO), Lisbon Humberto Delgado (LIS), Ponta Delgada Nordela (PDL), Funchal Madeira (FNC), Porto (OPO)

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

    Prices for flights from Seattle/Tacoma Intl Airport to Portugal were last updated today.

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

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

    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 Portugal.

  • What documentation or ID do you need to fly to Portugal?

    The necessary travel and health documents for your Portugal trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.


Best airlines flying from Seattle to Portugal

Compare and see reviews for airlines that fly from Seattle to Portugal with momondo
Airline
Rating
Free Cancellation
Price
IcelandairPriceFrom $543Free CancellationRating
7.0
484 reviews
Search Icelandair flights
British AirwaysPriceFrom $581Free CancellationRating
6.6
6,793 reviews
Search British Airways flights
LufthansaPriceFrom $632Free CancellationRating
6.7
7,020 reviews
Search Lufthansa flights
DeltaPriceFrom $636Free CancellationRating
8.0
7,920 reviews
Search Delta flights
Aer LingusPriceFrom $639Free CancellationRating
7.0
1,067 reviews
Search Aer Lingus flights
American AirlinesPriceFrom $643Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
Scandinavian AirlinesPriceFrom $652Free CancellationRating
7.3
1,342 reviews
Search Scandinavian Airlines flights
United AirlinesPriceFrom $696Free CancellationRating
7.4
8,684 reviews
Search United Airlines flights
Air CanadaPriceFrom $697Free CancellationRating
7.0
9,179 reviews
Search Air Canada flights
KLMPriceFrom $707Free CancellationRating
7.8
1,331 reviews
Search KLM flights

Why use momondo?

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

It is quick and easy to find Seattle to Portugal flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Portugal that suits you.

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

All flight searches from Seattle to Portugal on momondo can be filtered to show those which offer flexible booking policies.

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

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 Portugal.

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

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


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