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Cheap flights from Lisbon to Seattle from $347

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Lisbon to Seattle departing on 9/10. 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
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Lisbon to Seattle

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
6:10 am - 9:40 amLIS  Lisbon Humberto Delgado-SEA Seattle/Tacoma Intl
35h 30m2 stops Halifax Intl Calgary
Multiple Airlines Logo
3:40 pm - 11:30 pmSEA  Seattle/Tacoma Intl-LIS Lisbon Humberto Delgado
23h 50m2 stops Reykjavik Keflavik Intl Manchester
$756Multiple Airlines
sam., sept. 12 - sam., sept. 26
Multiple Airlines Logo
6:10 am - 9:40 amLIS  Lisbon Humberto Delgado-SEA Seattle/Tacoma Intl
35h 30m3 stops Halifax Intl Toronto Pearson Intl Calgary
Multiple Airlines Logo
3:40 pm - 11:30 pmSEA  Seattle/Tacoma Intl-LIS Lisbon Humberto Delgado
23h 50m2 stops Reykjavik Keflavik Intl Manchester
$770Multiple Airlines
sam., sept. 12 - sam., sept. 26
Icelandair Logo
3:00 pm - 8:40 pmLIS  Lisbon Humberto Delgado-SEA Seattle/Tacoma Intl
13h 40m1 stop Reykjavik Keflavik Intl
Icelandair Logo
3:40 pm - 1:50 pmSEA  Seattle/Tacoma Intl-LIS Lisbon Humberto Delgado
14h 10m1 stop Reykjavik Keflavik Intl
$798Icelandair
dim., oct. 18 - sam., oct. 24
Multiple Airlines Logo
6:10 am - 9:40 amLIS  Lisbon Humberto Delgado-SEA Seattle/Tacoma Intl
35h 30m3 stops Halifax Intl Toronto Pearson Intl Calgary
Multiple Airlines Logo
7:35 pm - 9:35 amSEA  Seattle/Tacoma Intl-LIS Lisbon Humberto Delgado
30h 00m3 stops Calgary Montreal Pierre Elliott Trudeau Intl Toronto Pearson Intl
$799Multiple Airlines
sam., sept. 12 - sam., sept. 26
Multiple Airlines Logo
5:55 am - 8:40 pmLIS  Lisbon Humberto Delgado-SEA Seattle/Tacoma Intl
22h 45m2 stops London Stansted Reykjavik Keflavik Intl
Multiple Airlines Logo
3:40 pm - 9:30 amSEA  Seattle/Tacoma Intl-LIS Lisbon Humberto Delgado
33h 50m3 stops Reykjavik Keflavik Intl Kastrup Copenhagen Barcelona-El Prat
$844Multiple Airlines
jeu., oct. 8 - ven., oct. 23
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
7:00 pm - 1:35 pmSEA  Seattle/Tacoma Intl-LIS Lisbon Humberto Delgado
34h 35m3 stops Reykjavik Keflavik Intl London Gatwick Porto
$845Multiple Airlines
mar., sept. 29 - mar., oct. 6
Multiple Airlines Logo
7:10 pm - 3:40 pmLIS  Lisbon Humberto Delgado-SEA Seattle/Tacoma Intl
28h 30m3 stops Barcelona-El Prat Venice Marco Polo Frankfurt am Main
Multiple Airlines Logo
6:05 pm - 8:30 amSEA  Seattle/Tacoma Intl-LIS Lisbon Humberto Delgado
30h 25m3 stops Frankfurt am Main Venice Marco Polo Barcelona-El Prat
$848Multiple Airlines
mar., sept. 29 - mar., oct. 6
Multiple Airlines Logo
6:10 am - 9:40 amLIS  Lisbon Humberto Delgado-SEA Seattle/Tacoma Intl
35h 30m2 stops Halifax Intl Calgary
Multiple Airlines Logo
7:10 pm - 9:55 pmSEA  Seattle/Tacoma Intl-LIS Lisbon Humberto Delgado
18h 45m1 stop Dublin
$856Multiple Airlines
sam., sept. 12 - sam., sept. 26
Delta Logo
5:00 am - 11:47 amLIS  Lisbon Humberto Delgado-SEA Seattle/Tacoma Intl
14h 47m1 stop Amsterdam Schiphol
Delta Logo
6:40 pm - 5:50 pmSEA  Seattle/Tacoma Intl-LIS Lisbon Humberto Delgado
15h 10m1 stop Paris Charles de Gaulle
$970Delta
mar., sept. 22 - ven., oct. 2
Delta Logo
5:00 am - 4:35 pmLIS  Lisbon Humberto Delgado-SEA Seattle/Tacoma Intl
19h 35m1 stop Amsterdam Schiphol
Delta Logo
7:15 am - 11:15 amSEA  Seattle/Tacoma Intl-LIS Lisbon Humberto Delgado
20h 00m2 stops Chicago O'Hare Intl Paris Charles de Gaulle
$970Delta
mar., sept. 22 - ven., oct. 2

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United Airlines flights from Lisbon to Seattle

Our best United Airlines deals on Lisbon to Seattle flight tickets
United Airlines
Sep 11
LIS12:20 pmLisbon Humberto Delgado
15h 58m
1 stop
SEA8:18 pmSeattle/Tacoma Intl
Sep 26
SEA7:00 amSeattle/Tacoma Intl
17h 20m
1 stop
LIS8:20 amLisbon Humberto Delgado
$895
United Airlines
Oct 8
LIS5:05 amLisbon Humberto Delgado
15h 15m
1 stop
SEA12:20 pmSeattle/Tacoma Intl
Oct 23
SEA8:25 amSeattle/Tacoma Intl
15h 55m
2 stops
LIS8:20 amLisbon Humberto Delgado
$999
United Airlines
Oct 15
LIS5:05 amLisbon Humberto Delgado
15h 15m
1 stop
SEA12:20 pmSeattle/Tacoma Intl
Oct 19
SEA8:25 amSeattle/Tacoma Intl
15h 55m
2 stops
LIS8:20 amLisbon Humberto Delgado
$1,000

Icelandair flights from Lisbon to Seattle

Our best Icelandair deals on Lisbon to Seattle flight tickets
Icelandair
Oct 18
LIS3:00 pmLisbon Humberto Delgado
13h 40m
1 stop
SEA8:40 pmSeattle/Tacoma Intl
Oct 24
SEA3:40 pmSeattle/Tacoma Intl
14h 10m
1 stop
LIS1:50 pmLisbon Humberto Delgado
$798
Icelandair
Aug 23
LIS10:20 pmLisbon Humberto Delgado
21h 25m
1 stop
SEA11:45 amSeattle/Tacoma Intl
Sep 5
SEA11:25 pmSeattle/Tacoma Intl
13h 55m
1 stop
LIS9:20 pmLisbon Humberto Delgado
$2,954
Icelandair
Aug 23
LIS10:20 pmLisbon Humberto Delgado
21h 25m
1 stop
SEA11:45 amSeattle/Tacoma Intl
Sep 5
SEA7:00 pmSeattle/Tacoma Intl
15h 45m
2 stops
LIS6:45 pmLisbon Humberto Delgado
$3,769

momondo Fare Finder

 
Customize your flight search to find flights from Lisbon to Seattle that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated août 15, 2026.
Use the filters below to find and compare flights from Lisbon 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

sam. 9/12

6:10 am-9:40 am

2 stops35h 30m

Seattle/Tacoma Intl

sam. 9/26

3:40 pm-11:30 pm

2 stops23h 50m

$756

LisbonSeattle

LIS Lisbon Humberto Delgado - SEA Seattle/Tacoma Intl

LISSEA

Lisbon Humberto Delgado

sam. 9/12

6:10 am-9:40 am

3 stops35h 30m

Seattle/Tacoma Intl

sam. 9/26

3:40 pm-11:30 pm

2 stops23h 50m

$770
Quickest round-trip

LisbonSeattle

LIS Lisbon Humberto Delgado - SEA Seattle/Tacoma Intl

LISSEA

Lisbon Humberto Delgado

dim. 10/18

3:00 pm-8:40 pm

1 stop13h 40m

Seattle/Tacoma Intl

sam. 10/24

3:40 pm-1:50 pm

1 stop14h 10m

$798

LisbonSeattle

LIS Lisbon Humberto Delgado - SEA Seattle/Tacoma Intl

LISSEA

Lisbon Humberto Delgado

sam. 9/12

6:10 am-9:40 am

3 stops35h 30m

Seattle/Tacoma Intl

sam. 9/26

7:35 pm-9:35 am

3 stops30h 00m

$799

LisbonSeattle

LIS Lisbon Humberto Delgado - SEA Seattle/Tacoma Intl

LISSEA

Lisbon Humberto Delgado

jeu. 10/8

5:55 am-8:40 pm

2 stops22h 45m

Seattle/Tacoma Intl

ven. 10/23

3:40 pm-9:30 am

3 stops33h 50m

$844

LisbonSeattle

LIS Lisbon Humberto Delgado - SEA Seattle/Tacoma Intl

LISSEA

Lisbon Humberto Delgado

mar. 9/29

6:10 am-8:40 pm

2 stops22h 30m

Seattle/Tacoma Intl

mar. 10/6

7:00 pm-1:35 pm

3 stops34h 35m

$845

LisbonSeattle

LIS Lisbon Humberto Delgado - SEA Seattle/Tacoma Intl

LISSEA

Lisbon Humberto Delgado

mar. 9/29

7:10 pm-3:40 pm

3 stops28h 30m

Seattle/Tacoma Intl

mar. 10/6

6:05 pm-8:30 am

3 stops30h 25m

$848

LisbonSeattle

LIS Lisbon Humberto Delgado - SEA Seattle/Tacoma Intl

LISSEA

Lisbon Humberto Delgado

sam. 9/12

6:10 am-9:40 am

2 stops35h 30m

Seattle/Tacoma Intl

sam. 9/26

7:10 pm-9:55 pm

1 stop18h 45m

$856

LisbonSeattle

LIS Lisbon Humberto Delgado - SEA Seattle/Tacoma Intl

LISSEA

Lisbon Humberto Delgado

mar. 9/22

5:00 am-11:47 am

1 stop14h 47m

Seattle/Tacoma Intl

ven. 10/2

6:40 pm-5:50 pm

1 stop15h 10m

$970

LisbonSeattle

LIS Lisbon Humberto Delgado - SEA Seattle/Tacoma Intl

LISSEA

Lisbon Humberto Delgado

mar. 9/22

5:00 am-4:35 pm

1 stop19h 35m

Seattle/Tacoma Intl

ven. 10/2

7:15 am-11:15 am

2 stops20h 00m

$970

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 Lisbon 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 typical price of a round-trip flight between Lisbon and Seattle?

Prices are currently low for flights on this route.

Typical prices usually range from $906 to $1,289.
The lowest price recently found on this route was $756.

What is the cheapest month to fly to Seattle?

In general, December is the cheapest month to fly from Lisbon to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $880. If you don’t want to visit Seattle in December, then you should wait until February to fly from Lisbon, when ticket prices are also cheap, with an average price of $897.

Can stopping save me money on Lisbon to Seattle flights?

You could potentially save up to 13% on your flight if you consider stops on a Lisbon to Seattle flight.

How have Lisbon to Seattle flight prices changed over time?

As of August 2026, prices for Lisbon to Seattle flights are approximately 3% cheaper when compared to flights at the same time last year.

When to book flights from Lisbon to Seattle

Are you open to changing your travel dates? Check out the ideal times to fly from Lisbon to Seattle according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Lisbon to Seattle (LIS to SEA) flight deals and tips

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

Fastest flight time

13h 40m

Direct flights

None
The fastest flight from Lisbon to Seattle takes 13h 40m
There are no direct flights from Lisbon to Seattle. There are no popular flight routes from Lisbon to Seattle.
Search flight deals

Frequently asked questions about flying from Lisbon to Seattle

  • How far is Lisbon Humberto Delgado to Seattle/Tacoma Intl by plane?

    A flight from Lisbon Humberto Delgado to Seattle/Tacoma Intl will travel around 5195.1 mi. In terms of flight time, this usually takes a little over 13h 40m.

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

    Prices for flights from Lisbon Humberto Delgado Airport to Seattle/Tacoma Intl Airport refresh daily.

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

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Lisbon Humberto Delgado Airport 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.

  • What is the most popular airline from Lisbon to Seattle?

Best airlines flying from Lisbon to Seattle

Compare and see reviews for airlines that fly from Lisbon to Seattle with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $1,041Free CancellationRating
7.8
8,508 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
Olympia
Kent
Lynnwood
Redmond
Lakewood
Federal Way
Puyallup
Tukwila
Fife
Cle Elum
Marysville
Kirkland
Centralia
Shoreline
Lacey

Why use momondo?

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

Finding the right flight to Seattle from Lisbon is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Seattle quick and easy, saving you time and money.

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

Yes. momondo enables you to select and highlight flights to Seattle from Lisbon with this policy.

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

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 Lisbon to Seattle.

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

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

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