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Cheap flights from Seattle to Lisbon from $237

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 Lisbon departing on 11/25. 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

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Find the cheapest flights from Seattle to Lisbon

Cheap round-trip flights

Enter your travel dates to find the best prices.
Scandinavian Airlines Logo
3:55 pm - 7:25 pm
SEA
-
LIS
19h 30m
1 stop
Scandinavian Airlines Logo
10:55 pm - 1:45 pm
LIS
-
SEA
22h 50m
1 stop
$768Scandinavian Airlines
Sun, Aug 16 - Sat, Aug 29
Multiple Airlines Logo
3:55 pm - 9:10 am
SEA
-
LIS
33h 15m
2 stops
Multiple Airlines Logo
10:55 pm - 1:45 pm
LIS
-
SEA
22h 50m
1 stop
$789Multiple Airlines
Sat, Sep 19 - Sat, Oct 3
Lufthansa Logo
2:50 pm - 1:20 pm
SEA
-
LIS
14h 30m
1 stop
Lufthansa Logo
5:00 am - 12:00 pm
LIS
-
SEA
15h 00m
1 stop
$812Lufthansa
Sun, Nov 8 - Wed, Nov 18
Multiple Airlines Logo
3:40 pm - 11:05 pm
SEA
-
LIS
23h 25m
3 stops
Multiple Airlines Logo
9:20 pm - 9:04 pm
LIS
-
SEA
31h 44m
3 stops
$821Multiple Airlines
Thu, Sep 10 - Mon, Sep 21
British Airways Logo
6:50 pm - 5:40 pm
SEA
-
LIS
14h 50m
1 stop
British Airways Logo
11:05 am - 10:15 pm
LIS
-
SEA
19h 10m
1 stop
$822British Airways
Tue, Nov 3 - Thu, Nov 12
Scandinavian Airlines Logo
3:55 pm - 11:15 pm
SEA
-
LIS
23h 20m
1 stop
Scandinavian Airlines Logo
10:55 pm - 1:45 pm
LIS
-
SEA
22h 50m
1 stop
$826Scandinavian Airlines
Tue, Aug 18 - Sat, Aug 29
Multiple Airlines Logo
11:15 am - 8:00 am
SEA
-
LIS
13h 45m
1 stop
Multiple Airlines Logo
6:30 pm - 11:25 am
LIS
-
SEA
24h 55m
1 stop
$832Multiple Airlines
Mon, Oct 26 - Mon, Nov 2
Multiple Airlines Logo
3:40 pm - 8:00 pm
SEA
-
LIS
20h 20m
2 stops
Multiple Airlines Logo
6:00 am - 9:40 am
LIS
-
SEA
35h 40m
3 stops
$837Multiple Airlines
Thu, Sep 10 - Mon, Sep 21
Multiple Airlines Logo
3:40 pm - 8:00 pm
SEA
-
LIS
20h 20m
2 stops
Multiple Airlines Logo
6:00 am - 9:40 am
LIS
-
SEA
35h 40m
2 stops
$841Multiple Airlines
Thu, Sep 10 - Mon, Sep 21
Multiple Airlines Logo
3:55 pm - 9:10 am
SEA
-
LIS
33h 15m
2 stops
Multiple Airlines Logo
10:55 pm - 1:45 pm
LIS
-
SEA
22h 50m
1 stop
$844Multiple Airlines
Sat, Sep 12 - Sat, Sep 26

Scandinavian Airlines flights from Seattle to Lisbon

Our best Scandinavian Airlines deals on Seattle to Lisbon flight tickets
Scandinavian Airlines
Aug 16
SEA3:55 pmSeattle/Tacoma Intl
19h 30m
1 stop
LIS7:25 pmLisbon Humberto Delgado
Aug 29
LIS10:55 pmLisbon Humberto Delgado
22h 50m
1 stop
SEA1:45 pmSeattle/Tacoma Intl
$768
Scandinavian Airlines
Aug 18
SEA3:55 pmSeattle/Tacoma Intl
23h 20m
1 stop
LIS11:15 pmLisbon Humberto Delgado
Aug 29
LIS10:55 pmLisbon Humberto Delgado
22h 50m
1 stop
SEA1:45 pmSeattle/Tacoma Intl
$826
Scandinavian Airlines
Oct 2
SEA3:55 pmSeattle/Tacoma Intl
22h 10m
1 stop
LIS10:05 pmLisbon Humberto Delgado
Oct 10
LIS10:55 pmLisbon Humberto Delgado
22h 50m
1 stop
SEA1:45 pmSeattle/Tacoma Intl
$861

Lufthansa flights from Seattle to Lisbon

Our best Lufthansa deals on Seattle to Lisbon flight tickets
Lufthansa
Nov 8
SEA2:50 pmSeattle/Tacoma Intl
14h 30m
1 stop
LIS1:20 pmLisbon Humberto Delgado
Nov 18
LIS5:00 amLisbon Humberto Delgado
15h 00m
1 stop
SEA12:00 pmSeattle/Tacoma Intl
$812
Lufthansa
Nov 1
SEA2:50 pmSeattle/Tacoma Intl
24h 40m
1 stop
LIS11:30 pmLisbon Humberto Delgado
Nov 16
LIS3:50 pmLisbon Humberto Delgado
38h 39m
2 stops
SEA10:29 pmSeattle/Tacoma Intl
$862
Lufthansa
Oct 3
SEA7:20 pmSeattle/Tacoma Intl
30h 00m
2 stops
LIS9:20 amLisbon Humberto Delgado
Nov 27
LIS6:10 amLisbon Humberto Delgado
14h 50m
1 stop
SEA1:00 pmSeattle/Tacoma Intl
$881

momondo Fare Finder

 
Customize your flight search to find flights from Seattle to Lisbon 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 June 4, 2026.
Use the filters below to find and compare flights from Seattle to Lisbon that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Sun 8/16

3:55 pm-7:25 pm

1 stop19h 30m

Lisbon Humberto Delgado

Sat 8/29

10:55 pm-1:45 pm

1 stop22h 50m

$768

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Sat 9/19

3:55 pm-9:10 am

2 stops33h 15m

Lisbon Humberto Delgado

Sat 10/3

10:55 pm-1:45 pm

1 stop22h 50m

$789
Quickest round-trip

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Sun 11/8

2:50 pm-1:20 pm

1 stop14h 30m

Lisbon Humberto Delgado

Wed 11/18

5:00 am-12:00 pm

1 stop15h 00m

$812

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Thu 9/10

3:40 pm-11:05 pm

3 stops23h 25m

Lisbon Humberto Delgado

Mon 9/21

9:20 pm-9:04 pm

3 stops31h 44m

$821

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Tue 11/3

6:50 pm-5:40 pm

1 stop14h 50m

Lisbon Humberto Delgado

Thu 11/12

11:05 am-10:15 pm

1 stop19h 10m

$822

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Tue 8/18

3:55 pm-11:15 pm

1 stop23h 20m

Lisbon Humberto Delgado

Sat 8/29

10:55 pm-1:45 pm

1 stop22h 50m

$826

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Mon 10/26

11:15 am-8:00 am

1 stop13h 45m

Lisbon Humberto Delgado

Mon 11/2

6:30 pm-11:25 am

1 stop24h 55m

$832

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Thu 9/10

3:40 pm-8:00 pm

2 stops20h 20m

Lisbon Humberto Delgado

Mon 9/21

6:00 am-9:40 am

3 stops35h 40m

$837

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Thu 9/10

3:40 pm-8:00 pm

2 stops20h 20m

Lisbon Humberto Delgado

Mon 9/21

6:00 am-9:40 am

2 stops35h 40m

$841

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Sat 9/12

3:55 pm-9:10 am

2 stops33h 15m

Lisbon Humberto Delgado

Sat 9/26

10:55 pm-1:45 pm

1 stop22h 50m

$844

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 Lisbon from

How to get the cheapest flight ticket from Seattle to Lisbon

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 Seattle and Lisbon?

What is the cheapest month to fly to Lisbon?

In general, January is the cheapest month to fly from Seattle to Lisbon. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $492. If you are unable to visit Lisbon during the month of January, then departing from Seattle during the month February is also very affordable. Most momondo users find prices during this month for around $555.

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

You are more likely to see cheaper flights to Lisbon from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Lisbon for around $818 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Lisbon from Seattle for as low as $721 on momondo.

How have Seattle to Lisbon flight prices changed over time?

As of June 2026, prices for Seattle to Lisbon flights are approximately 17% more expensive when compared to flights at the same time last year.

When to book flights from Seattle to Lisbon

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

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

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

Fastest flight time

13h 45m

Direct flights

None
The fastest flight from Seattle to Lisbon takes 13h 45m
There are no direct flights from Seattle to Lisbon. There are no popular flight routes from Seattle to Lisbon.
Search flight deals

Frequently asked questions about flying from Seattle to Lisbon

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

    The straight-line distance from Seattle/Tacoma Intl to Lisbon Humberto Delgado is 5195.1 mi. 13h 45m is a normal flight duration for this route.

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

    Prices for flights from Seattle/Tacoma Intl Airport to Lisbon Humberto Delgado Airport are refreshed on a daily basis.

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

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Lisbon Humberto Delgado Airport.

  • What documentation or ID do you need to fly to Lisbon Humberto Delgado Airport?

    The travel and health documents you'll need for your trip to Lisbon Humberto Delgado Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Lisbon Humberto Delgado Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

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

Best airlines flying from Seattle to Lisbon

Compare and see reviews for airlines that fly from Seattle to Lisbon with momondo
Airline
Rating
Free Cancellation
Price
IcelandairPriceFrom $348Free CancellationRating
7.0
665 reviews
Search Icelandair flights
LufthansaPriceFrom $482Free CancellationRating
6.8
8,036 reviews
Search Lufthansa flights
British AirwaysPriceFrom $482Free CancellationRating
6.7
8,026 reviews
Search British Airways flights
United AirlinesPriceFrom $494Free CancellationRating
7.4
9,774 reviews
Search United Airlines flights
KLMPriceFrom $503Free CancellationRating
7.8
1,524 reviews
Search KLM flights
Air FrancePriceFrom $505Free CancellationRating
7.4
1,596 reviews
Search Air France flights
Air CanadaPriceFrom $543Free CancellationRating
7.1
11,126 reviews
Search Air Canada flights
DeltaPriceFrom $545Free CancellationRating
7.8
8,396 reviews
Search Delta flights
Aer LingusPriceFrom $553Free CancellationRating
7.3
1,595 reviews
Search Aer Lingus flights
American AirlinesPriceFrom $558Free CancellationRating
7.1
11,642 reviews
Search American Airlines flights

Traveling to a place near Lisbon?

Book flights to Lisbon if you plan to visit one of these locations
Sintra
Fátima
Ericeira
Nazaré
Setúbal
Estoril
Peniche
Evora
Oeiras
Leiria
Figueira da Foz
Sesimbra
Zambujeira do Mar
Batalha
Óbidos
Tomar
Comporta
Sines
Torres Vedras
Costa da Caparica

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Lisbon from Seattle.

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

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

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Lisbon from Seattle.

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

Of course. momondo tracks the price of Seattle to Lisbon flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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