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Cheap flights from Seattle to Portugal from $220

1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Seattle to Portugal

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
6:05 pm - 7:40 pmSEA  Seattle/Tacoma Intl-OPO Porto
17h 35m2 stops Frankfurt am Main Milan Malpensa
Multiple Airlines Logo
6:30 am - 3:40 pmOPO  Porto-SEA Seattle/Tacoma Intl
17h 10m2 stops Milan Malpensa Frankfurt am Main
$736Multiple Airlines
Tue, Oct 13 - Tue, Oct 20
Multiple Airlines Logo
2:50 pm - 12:50 pmSEA  Seattle/Tacoma Intl-OPO Porto
14h 00m1 stop Munich Franz Josef Strauss
Multiple Airlines Logo
6:00 am - 9:27 amOPO  Porto-SEA Seattle/Tacoma Intl
35h 27m2 stops Frankfurt am Main Vancouver Intl
$744Multiple Airlines
Sun, Jan 10 - Fri, Jan 15
Air Canada Logo
7:05 pm - 9:20 amSEA  Seattle/Tacoma Intl-LIS Lisbon Humberto Delgado
30h 15m2 stops Vancouver Intl Toronto Pearson Intl
Air Canada Logo
5:00 am - 2:37 pmLIS  Lisbon Humberto Delgado-SEA Seattle/Tacoma Intl
17h 37m2 stops Frankfurt am Main Vancouver Intl
$747Air Canada
Sun, Nov 8 - Wed, Nov 18
Lufthansa Logo
2:50 pm - 12:50 pmSEA  Seattle/Tacoma Intl-OPO Porto
14h 00m1 stop Munich Franz Josef Strauss
Lufthansa Logo
6:15 am - 1:00 pmOPO  Porto-SEA Seattle/Tacoma Intl
14h 45m1 stop Munich Franz Josef Strauss
$751Lufthansa
Sun, Nov 15 - Fri, Nov 27
United Airlines Logo
6:50 am - 9:30 amSEA  Seattle/Tacoma Intl-OPO Porto
18h 40m1 stop Newark
United Airlines Logo
6:00 am - 6:09 pmOPO  Porto-SEA Seattle/Tacoma Intl
20h 09m2 stops Frankfurt am Main Denver Intl
$751United Airlines
Sun, Dec 6 - Thu, Dec 10
United Airlines Logo
6:50 am - 9:30 amSEA  Seattle/Tacoma Intl-OPO Porto
18h 40m1 stop Newark
United Airlines Logo
6:00 am - 11:21 pmOPO  Porto-SEA Seattle/Tacoma Intl
25h 21m3 stops Frankfurt am Main Denver Intl San Francisco
$751United Airlines
Sun, Dec 6 - Thu, Dec 10
Air Canada Logo
7:45 am - 12:50 pmSEA  Seattle/Tacoma Intl-OPO Porto
21h 05m2 stops Toronto Pearson Intl Munich Franz Josef Strauss
Air Canada Logo
6:00 am - 9:57 pmOPO  Porto-SEA Seattle/Tacoma Intl
23h 57m2 stops Frankfurt am Main Vancouver Intl
$753Air Canada
Tue, Jan 12 - Fri, Jan 15
Delta Logo
4:00 pm - 8:00 amSEA  Seattle/Tacoma Intl-LIS Lisbon Humberto Delgado
33h 00m1 stop New York John F Kennedy Intl
Delta Logo
5:00 am - 11:47 amLIS  Lisbon Humberto Delgado-SEA Seattle/Tacoma Intl
14h 47m1 stop Amsterdam Schiphol
$757Delta
Sat, Oct 31 - Tue, Nov 17
Delta Logo
4:00 pm - 8:00 amSEA  Seattle/Tacoma Intl-LIS Lisbon Humberto Delgado
33h 00m1 stop New York John F Kennedy Intl
Delta Logo
5:00 am - 11:47 amLIS  Lisbon Humberto Delgado-SEA Seattle/Tacoma Intl
14h 47m1 stop Amsterdam Schiphol
$757Delta
Sat, Oct 31 - Fri, Nov 20
Lufthansa Logo
2:50 pm - 12:50 pmSEA  Seattle/Tacoma Intl-OPO Porto
14h 00m1 stop Munich Franz Josef Strauss
Lufthansa Logo
6:00 am - 10:29 pmOPO  Porto-SEA Seattle/Tacoma Intl
24h 29m2 stops Frankfurt am Main Chicago O'Hare Intl
$760Lufthansa
Sun, Jan 10 - Thu, Jan 14

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Delta flights from Seattle to Portugal

Our best Delta deals on Seattle to Portugal flight tickets
Delta
Oct 31
SEA11:50 amSeattle/Tacoma Intl
37h 10m
1 stop
LIS8:00 amLisbon Humberto Delgado
Nov 18
LIS5:00 amLisbon Humberto Delgado
14h 47m
1 stop
SEA11:47 amSeattle/Tacoma Intl
$757
Delta
Nov 6
SEA10:59 pmSeattle/Tacoma Intl
34h 31m
2 stops
LIS5:30 pmLisbon Humberto Delgado
Nov 19
LIS11:30 amLisbon Humberto Delgado
32h 17m
1 stop
SEA11:47 amSeattle/Tacoma Intl
$761
Delta
Sep 22
SEA6:45 pmSeattle/Tacoma Intl
15h 05m
1 stop
LIS5:50 pmLisbon Humberto Delgado
Dec 22
LIS5:00 amLisbon Humberto Delgado
14h 50m
1 stop
SEA11:50 amSeattle/Tacoma Intl
$775

Aer Lingus flights from Seattle to Portugal

Our best Aer Lingus deals on Seattle to Portugal flight tickets
Aer Lingus
Aug 31
SEA7:10 pmSeattle/Tacoma Intl
18h 25m
1 stop
LIS9:35 pmLisbon Humberto Delgado
Sep 15
LIS10:15 pmLisbon Humberto Delgado
26h 55m
1 stop
SEA5:10 pmSeattle/Tacoma Intl
$1,033
Aer Lingus
Aug 24
SEA7:10 pmSeattle/Tacoma Intl
18h 25m
1 stop
LIS9:35 pmLisbon Humberto Delgado
Sep 2
LIS10:15 pmLisbon Humberto Delgado
26h 55m
1 stop
SEA5:10 pmSeattle/Tacoma Intl
$1,048
Aer Lingus
Sep 14
SEA7:10 pmSeattle/Tacoma Intl
16h 15m
1 stop
FAO7:25 pmFaro
Sep 21
FAO8:05 pmFaro
33h 31m
2 stops
SEA9:36 pmSeattle/Tacoma Intl
$1,096

momondo Fare Finder

 
Use the filters below to find and compare flights from Seattle to Portugal that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattlePorto

SEA Seattle/Tacoma Intl - OPO Porto

SEAOPO

Seattle/Tacoma Intl

Tue 10/13

6:05 pm-7:40 pm

2 stops17h 35m

Porto

Tue 10/20

6:30 am-3:40 pm

2 stops17h 10m

$736

SeattlePorto

SEA Seattle/Tacoma Intl - OPO Porto

SEAOPO

Seattle/Tacoma Intl

Sun 1/10

2:50 pm-12:50 pm

1 stop14h 00m

Porto

Fri 1/15

6:00 am-9:27 am

2 stops35h 27m

$744

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Sun 11/8

7:05 pm-9:20 am

2 stops30h 15m

Lisbon Humberto Delgado

Wed 11/18

5:00 am-2:37 pm

2 stops17h 37m

$747
Quickest round-trip

SeattlePorto

SEA Seattle/Tacoma Intl - OPO Porto

SEAOPO

Seattle/Tacoma Intl

Sun 11/15

2:50 pm-12:50 pm

1 stop14h 00m

Porto

Fri 11/27

6:15 am-1:00 pm

1 stop14h 45m

$751

SeattlePorto

SEA Seattle/Tacoma Intl - OPO Porto

SEAOPO

Seattle/Tacoma Intl

Sun 12/6

6:50 am-9:30 am

1 stop18h 40m

Porto

Thu 12/10

6:00 am-6:09 pm

2 stops20h 09m

$751

SeattlePorto

SEA Seattle/Tacoma Intl - OPO Porto

SEAOPO

Seattle/Tacoma Intl

Sun 12/6

6:50 am-9:30 am

1 stop18h 40m

Porto

Thu 12/10

6:00 am-11:21 pm

3 stops25h 21m

$751

SeattlePorto

SEA Seattle/Tacoma Intl - OPO Porto

SEAOPO

Seattle/Tacoma Intl

Tue 1/12

7:45 am-12:50 pm

2 stops21h 05m

Porto

Fri 1/15

6:00 am-9:57 pm

2 stops23h 57m

$753

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Sat 10/31

4:00 pm-8:00 am

1 stop33h 00m

Lisbon Humberto Delgado

Tue 11/17

5:00 am-11:47 am

1 stop14h 47m

$757

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Sat 10/31

4:00 pm-8:00 am

1 stop33h 00m

Lisbon Humberto Delgado

Fri 11/20

5:00 am-11:47 am

1 stop14h 47m

$757

SeattlePorto

SEA Seattle/Tacoma Intl - OPO Porto

SEAOPO

Seattle/Tacoma Intl

Sun 1/10

2:50 pm-12:50 pm

1 stop14h 00m

Porto

Thu 1/14

6:00 am-10:29 pm

2 stops24h 29m

$760

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 $488, 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 $578.

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

You are more likely to see cheaper flights to Portugal from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Portugal for around $852 when searching 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 $713 on momondo.

Can stopping save me money on Seattle to Portugal flights?

You could potentially save up to 26% on your flight if you consider stops on a Seattle to Portugal flight.

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

$220

Fastest flight time

14h 00m

Direct flights

None
The best one-way flight to Portugal from Seattle in the past 72 hours is $220. The best round-trip flight deal from Seattle to Portugal found on momondo in the last 72 hours is $736.
The fastest flight from Seattle to Portugal takes 14h 00m
There are no direct flights from Seattle to Portugal. There are no popular flight routes from Seattle to Portugal.
Search flight deals

Frequently asked questions about flying from Seattle to Portugal

  • 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 $348Free CancellationRating
6.9
731 reviews
Search Icelandair flights
LufthansaPriceFrom $475Free CancellationRating
6.8
8,204 reviews
Search Lufthansa flights
KLMPriceFrom $481Free CancellationRating
7.8
1,560 reviews
Search KLM flights
British AirwaysPriceFrom $482Free CancellationRating
6.7
8,179 reviews
Search British Airways flights
United AirlinesPriceFrom $482Free CancellationRating
7.4
10,101 reviews
Search United Airlines flights
American AirlinesPriceFrom $497Free CancellationRating
7.1
11,972 reviews
Search American Airlines flights
Air FrancePriceFrom $505Free CancellationRating
7.5
1,647 reviews
Search Air France flights
Air CanadaPriceFrom $543Free CancellationRating
7.1
11,507 reviews
Search Air Canada flights
DeltaPriceFrom $550Free CancellationRating
7.8
8,505 reviews
Search Delta flights
Scandinavian AirlinesPriceFrom $567Free CancellationRating
7.4
1,954 reviews
Search Scandinavian Airlines 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.

An easier way to manage your Portugal trip

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Find better results for your trip to Portugal

Popular cities in Portugal

Flights to Lisbonfrom $554
Flights to Portofrom $523
Flights to Funchalfrom $597
Flights to Farofrom $610
Flights to Ponta Delgadafrom $568
Flights to Lajesfrom $618
Flights to Hortafrom $696
Flights to Pico Islandfrom $668
Flights to Porto Santofrom $713
Flights to Velasfrom $729