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Cheap flights from Portugal to Seattle from $455

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
6:10 am - 8:40 pmLIS  Lisbon Humberto Delgado-SEA Seattle/Tacoma Intl
22h 30m2 stops London Gatwick Reykjavik Keflavik Intl
Multiple Airlines Logo
3:35 pm - 7:15 pmSEA  Seattle/Tacoma Intl-LIS Lisbon Humberto Delgado
20h 40m2 stops Reykjavik Keflavik Intl London Gatwick
$696Multiple Airlines
Tue, Oct 20 - Tue, Oct 27
Multiple Airlines Logo
9:05 pm - 5:00 pmLIS  Lisbon Humberto Delgado-SEA Seattle/Tacoma Intl
27h 55m3 stops Barcelona-El Prat London Gatwick Reykjavik Keflavik Intl
Multiple Airlines Logo
2:35 pm - 8:30 amSEA  Seattle/Tacoma Intl-LIS Lisbon Humberto Delgado
33h 55m3 stops Reykjavik Keflavik Intl London Heathrow Barcelona-El Prat
$726Multiple Airlines
Sun, Nov 8 - Mon, Nov 23
Multiple Airlines Logo
9:05 pm - 5:00 pmLIS  Lisbon Humberto Delgado-SEA Seattle/Tacoma Intl
27h 55m3 stops Barcelona-El Prat London Gatwick Reykjavik Keflavik Intl
Multiple Airlines Logo
2:35 pm - 8:30 amSEA  Seattle/Tacoma Intl-LIS Lisbon Humberto Delgado
33h 55m3 stops Reykjavik Keflavik Intl London Heathrow Barcelona-El Prat
$735Multiple Airlines
Sun, Nov 8 - Mon, Nov 23
Multiple Airlines Logo
9:05 pm - 5:00 pmLIS  Lisbon Humberto Delgado-SEA Seattle/Tacoma Intl
27h 55m3 stops Barcelona-El Prat London Gatwick Reykjavik Keflavik Intl
Multiple Airlines Logo
2:35 pm - 8:30 amSEA  Seattle/Tacoma Intl-LIS Lisbon Humberto Delgado
33h 55m3 stops Reykjavik Keflavik Intl London Heathrow Barcelona-El Prat
$737Multiple Airlines
Sun, Nov 8 - Mon, Nov 23
Multiple Airlines Logo
9:00 pm - 5:00 pmLIS  Lisbon Humberto Delgado-SEA Seattle/Tacoma Intl
28h 00m3 stops Porto London Gatwick Reykjavik Keflavik Intl
Multiple Airlines Logo
2:35 pm - 8:30 amSEA  Seattle/Tacoma Intl-LIS Lisbon Humberto Delgado
33h 55m3 stops Reykjavik Keflavik Intl London Heathrow Barcelona-El Prat
$739Multiple Airlines
Sun, Nov 8 - Mon, Nov 23
Multiple Airlines Logo
9:05 pm - 5:00 pmLIS  Lisbon Humberto Delgado-SEA Seattle/Tacoma Intl
27h 55m3 stops Barcelona-El Prat London Gatwick Reykjavik Keflavik Intl
Multiple Airlines Logo
2:35 pm - 8:30 amSEA  Seattle/Tacoma Intl-LIS Lisbon Humberto Delgado
33h 55m3 stops Reykjavik Keflavik Intl London Heathrow Barcelona-El Prat
$752Multiple Airlines
Sun, Nov 8 - Mon, Nov 23
Multiple Airlines Logo
4:00 pm - 5:00 pmOPO  Porto-SEA Seattle/Tacoma Intl
33h 00m3 stops Lisbon Humberto Delgado London Gatwick Reykjavik Keflavik Intl
Multiple Airlines Logo
2:35 pm - 8:10 amSEA  Seattle/Tacoma Intl-OPO Porto
33h 35m3 stops Reykjavik Keflavik Intl London Heathrow Barcelona-El Prat
$757Multiple Airlines
Sun, Nov 8 - Mon, Nov 16
Multiple Airlines Logo
9:05 am - 12:00 pmLIS  Lisbon Humberto Delgado-SEA Seattle/Tacoma Intl
34h 55m3 stops Barcelona-El Prat London Heathrow Frankfurt am Main
Multiple Airlines Logo
3:15 pm - 8:30 amSEA  Seattle/Tacoma Intl-LIS Lisbon Humberto Delgado
33h 15m3 stops Vancouver Intl London Heathrow Barcelona-El Prat
$762Multiple Airlines
Sun, Nov 8 - Mon, Nov 23
Delta Logo
5:00 am - 11:47 amOPO  Porto-SEA Seattle/Tacoma Intl
14h 47m1 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
$881Delta
Sun, Nov 8 - Mon, Nov 16
Delta Logo
5:00 am - 11:47 amOPO  Porto-SEA Seattle/Tacoma Intl
14h 47m1 stop Amsterdam Schiphol
Delta Logo
3:25 pm - 10:00 pmSEA  Seattle/Tacoma Intl-OPO Porto
22h 35m1 stop Paris Charles de Gaulle
$881Delta
Sun, Nov 8 - Mon, Nov 16

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United Airlines flights from Portugal to Seattle

Our best United Airlines deals on Portugal to Seattle flight tickets
United Airlines
Sep 25
LIS10:25 amLisbon Humberto Delgado
18h 12m
2 stops
SEA8:37 pmSeattle/Tacoma Intl
Oct 10
SEA11:14 pmSeattle/Tacoma Intl
27h 16m
1 stop
LIS10:30 amLisbon Humberto Delgado
$1,033
United Airlines
Sep 22
LIS10:25 amLisbon Humberto Delgado
16h 16m
1 stop
SEA6:41 pmSeattle/Tacoma Intl
Oct 2
SEA6:50 pmSeattle/Tacoma Intl
19h 55m
1 stop
LIS10:45 pmLisbon Humberto Delgado
$1,046
United Airlines
Sep 25
OPO12:35 pmPorto
17h 20m
1 stop
SEA9:55 pmSeattle/Tacoma Intl
Sep 29
SEA8:25 amSeattle/Tacoma Intl
17h 20m
2 stops
OPO9:45 amPorto
$1,148

Delta flights from Portugal to Seattle

Our best Delta deals on Portugal to Seattle flight tickets
Delta
Nov 8
OPO5:00 amPorto
14h 47m
1 stop
SEA11:47 amSeattle/Tacoma Intl
Nov 16
SEA3:25 pmSeattle/Tacoma Intl
22h 35m
1 stop
OPO10:00 pmPorto
$881
Delta
Sep 30
OPO5:00 amPorto
14h 47m
1 stop
SEA11:47 amSeattle/Tacoma Intl
Oct 4
SEA1:30 pmSeattle/Tacoma Intl
18h 00m
1 stop
OPO3:30 pmPorto
$882
Delta
Oct 12
OPO5:00 amPorto
19h 35m
1 stop
SEA4:35 pmSeattle/Tacoma Intl
Oct 21
SEA6:40 pmSeattle/Tacoma Intl
19h 20m
1 stop
OPO10:00 pmPorto
$886

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

Tue 10/20

6:10 am-8:40 pm

2 stops22h 30m

Seattle/Tacoma Intl

Tue 10/27

3:35 pm-7:15 pm

2 stops20h 40m

$696

LisbonSeattle

LIS Lisbon Humberto Delgado - SEA Seattle/Tacoma Intl

LISSEA

Lisbon Humberto Delgado

Sun 11/8

9:05 pm-5:00 pm

3 stops27h 55m

Seattle/Tacoma Intl

Mon 11/23

2:35 pm-8:30 am

3 stops33h 55m

$726

LisbonSeattle

LIS Lisbon Humberto Delgado - SEA Seattle/Tacoma Intl

LISSEA

Lisbon Humberto Delgado

Sun 11/8

9:05 pm-5:00 pm

3 stops27h 55m

Seattle/Tacoma Intl

Mon 11/23

2:35 pm-8:30 am

3 stops33h 55m

$735

LisbonSeattle

LIS Lisbon Humberto Delgado - SEA Seattle/Tacoma Intl

LISSEA

Lisbon Humberto Delgado

Sun 11/8

9:05 pm-5:00 pm

3 stops27h 55m

Seattle/Tacoma Intl

Mon 11/23

2:35 pm-8:30 am

3 stops33h 55m

$737

LisbonSeattle

LIS Lisbon Humberto Delgado - SEA Seattle/Tacoma Intl

LISSEA

Lisbon Humberto Delgado

Sun 11/8

9:00 pm-5:00 pm

3 stops28h 00m

Seattle/Tacoma Intl

Mon 11/23

2:35 pm-8:30 am

3 stops33h 55m

$739

LisbonSeattle

LIS Lisbon Humberto Delgado - SEA Seattle/Tacoma Intl

LISSEA

Lisbon Humberto Delgado

Sun 11/8

9:05 pm-5:00 pm

3 stops27h 55m

Seattle/Tacoma Intl

Mon 11/23

2:35 pm-8:30 am

3 stops33h 55m

$752

PortoSeattle

OPO Porto - SEA Seattle/Tacoma Intl

OPOSEA

Porto

Sun 11/8

4:00 pm-5:00 pm

3 stops33h 00m

Seattle/Tacoma Intl

Mon 11/16

2:35 pm-8:10 am

3 stops33h 35m

$757

LisbonSeattle

LIS Lisbon Humberto Delgado - SEA Seattle/Tacoma Intl

LISSEA

Lisbon Humberto Delgado

Sun 11/8

9:05 am-12:00 pm

3 stops34h 55m

Seattle/Tacoma Intl

Mon 11/23

3:15 pm-8:30 am

3 stops33h 15m

$762
Quickest round-trip

PortoSeattle

OPO Porto - SEA Seattle/Tacoma Intl

OPOSEA

Porto

Sun 11/8

5:00 am-11:47 am

1 stop14h 47m

Seattle/Tacoma Intl

Mon 11/16

7:38 am-10:35 am

2 stops18h 57m

$881

PortoSeattle

OPO Porto - SEA Seattle/Tacoma Intl

OPOSEA

Porto

Sun 11/8

5:00 am-11:47 am

1 stop14h 47m

Seattle/Tacoma Intl

Mon 11/16

3:25 pm-10:00 pm

1 stop22h 35m

$881

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 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 April to fly from Portugal, when ticket prices are also cheap, with an average price of $950.

Can stopping save me money on Portugal to Seattle flights?

You could potentially save up to 13% 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

$455

Fastest flight time

14h 47m

Direct flights

None
The best one-way flight to Seattle from Portugal in the past 72 hours is $455. The best round-trip flight deal from Portugal to Seattle found on momondo in the last 72 hours is $696.
The fastest flight from Portugal to Seattle takes 14h 47m
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
DeltaPriceFrom $973Free CancellationRating
7.8
8,589 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
Redmond
Lakewood
Federal Way
Fife
Puyallup
Tukwila
Lynnwood
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.

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