Latest deals
Insights
FAQs
Reviews
Price Alerts

Cheap flights from Portugal to Seattle from $338

1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Portugal to Seattle

Recent round-trip flight deals from Portugal to Seattle

Enter your travel dates to find the best prices.
Multiple Airlines Logo
10:55 am - 11:50 amLIS  Lisbon Humberto Delgado-SEA Seattle/Tacoma Intl
32h 55m2 stops London Luton Amsterdam Schiphol
Multiple Airlines Logo
1:25 pm - 7:10 pmSEA  Seattle/Tacoma Intl-LIS Lisbon Humberto Delgado
21h 45m2 stops Salt Lake City London Heathrow
$817Multiple Airlines
Thu, Dec 3 - Sat, Dec 12
Multiple Airlines Logo
2:30 pm - 12:00 pmOPO  Porto-SEA Seattle/Tacoma Intl
29h 30m3 stops Lisbon Humberto Delgado London Heathrow Frankfurt am Main
Multiple Airlines Logo
3:15 pm - 12:30 amSEA  Seattle/Tacoma Intl-OPO Porto
25h 15m3 stops Vancouver Intl London Heathrow Lisbon Humberto Delgado
$884Multiple Airlines
Wed, Dec 2 - Wed, Dec 9
Multiple Airlines Logo
8:35 am - 5:00 pmLIS  Lisbon Humberto Delgado-SEA Seattle/Tacoma Intl
16h 25m1 stop London Heathrow
Multiple Airlines Logo
6:40 pm - 9:20 pmSEA  Seattle/Tacoma Intl-LIS Lisbon Humberto Delgado
18h 40m1 stop London Heathrow
$896Multiple Airlines
Fri, Dec 25 - Fri, Jan 29
Multiple Airlines Logo
8:35 am - 5:00 pmLIS  Lisbon Humberto Delgado-SEA Seattle/Tacoma Intl
16h 25m1 stop London Heathrow
Multiple Airlines Logo
6:40 pm - 9:20 pmSEA  Seattle/Tacoma Intl-LIS Lisbon Humberto Delgado
18h 40m1 stop London Heathrow
$896Multiple Airlines
Fri, Dec 25 - Thu, Jan 28
Icelandair Logo
2:00 pm - 5:00 pmLIS  Lisbon Humberto Delgado-SEA Seattle/Tacoma Intl
35h 00m1 stop Reykjavik Keflavik Intl
Icelandair Logo
2:35 pm - 12:50 pmSEA  Seattle/Tacoma Intl-LIS Lisbon Humberto Delgado
14h 15m1 stop Reykjavik Keflavik Intl
$903Icelandair
Sun, Dec 13 - Sat, Dec 26
Multiple Airlines Logo
9:05 am - 1:00 pmLIS  Lisbon Humberto Delgado-SEA Seattle/Tacoma Intl
35h 55m3 stops Barcelona-El Prat Berlin Brandenburg Munich Franz Josef Strauss
Multiple Airlines Logo
7:45 am - 2:05 pmSEA  Seattle/Tacoma Intl-LIS Lisbon Humberto Delgado
22h 20m3 stops Toronto Pearson Intl Frankfurt am Main Berlin Brandenburg
$903Multiple Airlines
Thu, Dec 3 - Sat, Dec 12
Multiple Airlines Logo
12:05 pm - 10:00 pmLIS  Lisbon Humberto Delgado-SEA Seattle/Tacoma Intl
17h 55m1 stop Boston Logan Intl
Multiple Airlines Logo
2:35 pm - 9:40 amSEA  Seattle/Tacoma Intl-LIS Lisbon Humberto Delgado
35h 05m2 stops Reykjavik Keflavik Intl London Gatwick
$910Multiple Airlines
Mon, Dec 14 - Mon, Dec 28
Multiple Airlines Logo
8:35 am - 5:00 pmLIS  Lisbon Humberto Delgado-SEA Seattle/Tacoma Intl
16h 25m1 stop London Heathrow
Multiple Airlines Logo
6:40 pm - 7:20 pmSEA  Seattle/Tacoma Intl-LIS Lisbon Humberto Delgado
16h 40m1 stop London Heathrow
$914Multiple Airlines
Fri, Dec 25 - Wed, Jan 27
Delta Logo
5:00 am - 11:50 amOPO  Porto-SEA Seattle/Tacoma Intl
14h 50m1 stop Amsterdam Schiphol
Delta Logo
3:25 pm - 10:00 pmSEA  Seattle/Tacoma Intl-OPO Porto
22h 35m1 stop Paris Charles de Gaulle
$981Delta
Wed, Dec 2 - Wed, Dec 9
Delta Logo
5:00 am - 11:50 amOPO  Porto-SEA Seattle/Tacoma Intl
14h 50m1 stop Amsterdam Schiphol
Delta Logo
7:38 am - 10:35 amSEA  Seattle/Tacoma Intl-OPO Porto
18h 57m2 stops Boston Logan Intl Paris Charles de Gaulle
$981Delta
Wed, Dec 2 - Wed, Dec 9

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Turkish Airlines flights from Portugal to Seattle

Our best Turkish Airlines deals on Portugal to Seattle flight tickets
Turkish Airlines
Nov 6
OPO10:55 amPorto
44h 12m
2 stops
SEA11:07 pmSeattle/Tacoma Intl
Nov 11
SEA7:05 pmSeattle/Tacoma Intl
30h 50m
1 stop
OPO9:55 amPorto
$932
Turkish Airlines
Dec 23
LIS5:55 amLisbon Humberto Delgado
19h 15m
1 stop
SEA5:10 pmSeattle/Tacoma Intl
Jan 27
SEA10:52 amSeattle/Tacoma Intl
44h 18m
2 stops
LIS3:10 pmLisbon Humberto Delgado
$934
Turkish Airlines
Dec 3
LIS4:10 pmLisbon Humberto Delgado
33h 00m
1 stop
SEA5:10 pmSeattle/Tacoma Intl
Dec 12
SEA10:48 amSeattle/Tacoma Intl
44h 22m
2 stops
LIS3:10 pmLisbon Humberto Delgado
$938

KLM flights from Portugal to Seattle

Our best KLM deals on Portugal to Seattle flight tickets
KLM
Dec 2
LIS5:00 amLisbon Humberto Delgado
14h 50m
1 stop
SEA11:50 amSeattle/Tacoma Intl
Dec 13
SEA2:35 pmSeattle/Tacoma Intl
16h 05m
1 stop
LIS2:40 pmLisbon Humberto Delgado
$995
KLM
Dec 2
LIS5:00 amLisbon Humberto Delgado
18h 29m
2 stops
SEA3:29 pmSeattle/Tacoma Intl
Dec 13
SEA2:35 pmSeattle/Tacoma Intl
16h 05m
1 stop
LIS2:40 pmLisbon Humberto Delgado
$1,001
KLM
Nov 8
FAO6:50 pmFaro
24h 57m
1 stop
SEA11:47 amSeattle/Tacoma Intl
Nov 15
SEA2:35 pmSeattle/Tacoma Intl
15h 15m
1 stop
FAO1:50 pmFaro
$1,415

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LisbonSeattle

LIS Lisbon Humberto Delgado - SEA Seattle/Tacoma Intl

LISSEA

Lisbon Humberto Delgado

Thu 12/3

10:55 am-11:50 am

2 stops32h 55m

Seattle/Tacoma Intl

Sat 12/12

1:25 pm-7:10 pm

2 stops21h 45m

$817

PortoSeattle

OPO Porto - SEA Seattle/Tacoma Intl

OPOSEA

Porto

Wed 12/2

2:30 pm-12:00 pm

3 stops29h 30m

Seattle/Tacoma Intl

Wed 12/9

3:15 pm-12:30 am

3 stops25h 15m

$884

LisbonSeattle

LIS Lisbon Humberto Delgado - SEA Seattle/Tacoma Intl

LISSEA

Lisbon Humberto Delgado

Fri 12/25

8:35 am-5:00 pm

1 stop16h 25m

Seattle/Tacoma Intl

Fri 1/29

6:40 pm-9:20 pm

1 stop18h 40m

$896

LisbonSeattle

LIS Lisbon Humberto Delgado - SEA Seattle/Tacoma Intl

LISSEA

Lisbon Humberto Delgado

Fri 12/25

8:35 am-5:00 pm

1 stop16h 25m

Seattle/Tacoma Intl

Thu 1/28

6:40 pm-9:20 pm

1 stop18h 40m

$896

LisbonSeattle

LIS Lisbon Humberto Delgado - SEA Seattle/Tacoma Intl

LISSEA

Lisbon Humberto Delgado

Sun 12/13

2:00 pm-5:00 pm

1 stop35h 00m

Seattle/Tacoma Intl

Sat 12/26

2:35 pm-12:50 pm

1 stop14h 15m

$903

LisbonSeattle

LIS Lisbon Humberto Delgado - SEA Seattle/Tacoma Intl

LISSEA

Lisbon Humberto Delgado

Thu 12/3

9:05 am-1:00 pm

3 stops35h 55m

Seattle/Tacoma Intl

Sat 12/12

7:45 am-2:05 pm

3 stops22h 20m

$903

LisbonSeattle

LIS Lisbon Humberto Delgado - SEA Seattle/Tacoma Intl

LISSEA

Lisbon Humberto Delgado

Mon 12/14

12:05 pm-10:00 pm

1 stop17h 55m

Seattle/Tacoma Intl

Mon 12/28

2:35 pm-9:40 am

2 stops35h 05m

$910
Quickest round-trip

LisbonSeattle

LIS Lisbon Humberto Delgado - SEA Seattle/Tacoma Intl

LISSEA

Lisbon Humberto Delgado

Fri 12/25

8:35 am-5:00 pm

1 stop16h 25m

Seattle/Tacoma Intl

Wed 1/27

6:40 pm-7:20 pm

1 stop16h 40m

$914

PortoSeattle

OPO Porto - SEA Seattle/Tacoma Intl

OPOSEA

Porto

Wed 12/2

5:00 am-11:50 am

1 stop14h 50m

Seattle/Tacoma Intl

Wed 12/9

3:25 pm-10:00 pm

1 stop22h 35m

$981

PortoSeattle

OPO Porto - SEA Seattle/Tacoma Intl

OPOSEA

Porto

Wed 12/2

5:00 am-11:50 am

1 stop14h 50m

Seattle/Tacoma Intl

Wed 12/9

7:38 am-10:35 am

2 stops18h 57m

$981

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Seattle from

How to get the cheapest flight ticket from Portugal to Seattle

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 Seattle?

In general, February is the cheapest month to fly from Portugal to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $897. If you don’t want to visit Seattle in February, then you should wait until December to fly from Portugal, when ticket prices are also cheap, with an average price of $899.

Can stopping save me money on Portugal to Seattle flights?

You could potentially save up to 16% on your flight if you consider stops on a Portugal to Seattle flight.

Cheap Portugal to Seattle flight deals and tips

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

Best Price Found

$338

Fastest flight time

19h 10m

Direct flights

None
The best one-way flight to Seattle from Portugal in the past 72 hours is $338. The best round-trip flight deal from Portugal to Seattle found on momondo in the last 72 hours is $817.
The fastest flight from Portugal to Seattle takes 19h 10m
There are no direct flights from Portugal to Seattle. There are no popular flight routes from Portugal to Seattle.
Search flight deals

Frequently asked questions about flying from Portugal to Seattle

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

    Prices for flights from Portugal to Seattle/Tacoma Intl Airport are updated daily.

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

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

  • What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

    The necessary travel and health documents for your Seattle/Tacoma Intl Airport 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 Portugal to Seattle

Compare and see reviews for airlines that fly from Portugal to Seattle with momondo
Airline
Rating
Free Cancellation
Price
KLMPriceFrom $895Free CancellationRating
7.8
1,596 reviews
Search KLM flights
DeltaPriceFrom $973Free CancellationRating
7.8
8,698 reviews
Search Delta flights

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Tacoma
Leavenworth
SeaTac
Ocean Shores
Renton
Kent
Olympia
Federal Way
Redmond
Lakewood
Lynnwood
Fife
Puyallup
Tukwila
Cle Elum
Marysville
Lacey
Kirkland
Centralia
Shoreline

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Portugal to Seattle for you.

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

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

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

Once all potential Portugal to Seattle flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Price alerts on flights to Seattle from Portugal are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your Seattle 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.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sat 12/5
Sat 12/12
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States