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Cheap flights from Seattle to Lisbon from $245

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 10/13. 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 Seattle to Lisbon

Cheap round-trip flights

Enter your travel dates to find the best prices.
Icelandair Logo
3:40 pm - 1:50 pm
SEA
-
LIS
14h 10m
1 stop
Icelandair Logo
3:00 pm - 8:40 pm
LIS
-
SEA
13h 40m
1 stop
$611Icelandair
Mon, Sep 28 - Tue, Oct 20
Icelandair Logo
7:00 pm - 1:50 pm
SEA
-
LIS
34h 50m
1 stop
Icelandair Logo
3:00 pm - 5:55 pm
LIS
-
SEA
34h 55m
1 stop
$618Icelandair
Sun, Sep 27 - Thu, Oct 8
Icelandair Logo
7:00 pm - 1:50 pm
SEA
-
LIS
34h 50m
1 stop
Icelandair Logo
3:00 pm - 5:55 pm
LIS
-
SEA
34h 55m
1 stop
$619Icelandair
Sun, Sep 27 - Thu, Oct 8
Icelandair Logo
3:40 pm - 1:50 pm
SEA
-
LIS
14h 10m
1 stop
Icelandair Logo
3:00 pm - 8:40 pm
LIS
-
SEA
13h 40m
1 stop
$622Icelandair
Mon, Sep 21 - Tue, Sep 29
Icelandair Logo
7:00 pm - 1:50 pm
SEA
-
LIS
34h 50m
1 stop
Icelandair Logo
3:00 pm - 8:40 pm
LIS
-
SEA
13h 40m
1 stop
$634Icelandair
Sun, Sep 20 - Tue, Sep 29
Icelandair Logo
3:40 pm - 1:50 pm
SEA
-
LIS
14h 10m
1 stop
Icelandair Logo
3:00 pm - 8:40 pm
LIS
-
SEA
13h 40m
1 stop
$648Icelandair
Mon, Sep 28 - Thu, Oct 8
Multiple Airlines Logo
3:40 pm - 8:30 am
SEA
-
LIS
32h 50m
3 stops
Multiple Airlines Logo
5:45 pm - 8:40 pm
LIS
-
SEA
34h 55m
3 stops
$655Multiple Airlines
Mon, Oct 5 - Mon, Oct 12
Icelandair Logo
3:40 pm - 1:50 pm
SEA
-
LIS
14h 10m
1 stop
Icelandair Logo
3:00 pm - 8:40 pm
LIS
-
SEA
13h 40m
1 stop
$680Icelandair
Wed, Sep 30 - Tue, Oct 13
Air Canada Logo
10:30 am - 9:20 am
SEA
-
LIS
14h 50m
2 stops
Air Canada Logo
5:05 am - 2:22 pm
LIS
-
SEA
17h 17m
2 stops
$696Air Canada
Tue, Oct 13 - Tue, Oct 20
Icelandair Logo
7:00 pm - 1:50 pm
SEA
-
LIS
34h 50m
1 stop
Icelandair Logo
3:00 pm - 8:40 pm
LIS
-
SEA
13h 40m
1 stop
$702Icelandair
Sun, Sep 27 - Tue, Oct 6

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Delta flights from Seattle to Lisbon

Our best Delta deals on Seattle to Lisbon flight tickets
Delta
Sep 22
SEA6:45 pmSeattle/Tacoma Intl
15h 05m
1 stop
LIS5:50 pmLisbon Humberto Delgado
Oct 2
LIS5:00 amLisbon Humberto Delgado
19h 35m
1 stop
SEA4:35 pmSeattle/Tacoma Intl
$804
Delta
Jul 20
SEA1:30 pmSeattle/Tacoma Intl
20h 20m
1 stop
LIS5:50 pmLisbon Humberto Delgado
Jul 29
LIS5:00 amLisbon Humberto Delgado
19h 20m
1 stop
SEA4:20 pmSeattle/Tacoma Intl
$1,268
Delta
Jul 19
SEA9:30 amSeattle/Tacoma Intl
24h 20m
2 stops
LIS5:50 pmLisbon Humberto Delgado
Aug 12
LIS5:00 amLisbon Humberto Delgado
19h 27m
1 stop
SEA4:27 pmSeattle/Tacoma Intl
$1,273

Lufthansa flights from Seattle to Lisbon

Our best Lufthansa deals on Seattle to Lisbon flight tickets
Lufthansa
Oct 13
SEA6:50 pmSeattle/Tacoma Intl
19h 55m
1 stop
LIS10:45 pmLisbon Humberto Delgado
Oct 28
LIS5:00 amLisbon Humberto Delgado
15h 00m
1 stop
SEA1:00 pmSeattle/Tacoma Intl
$772
Lufthansa
Oct 13
SEA2:10 pmSeattle/Tacoma Intl
17h 25m
1 stop
LIS3:35 pmLisbon Humberto Delgado
Oct 28
LIS6:10 amLisbon Humberto Delgado
14h 50m
1 stop
SEA2:00 pmSeattle/Tacoma Intl
$776
Lufthansa
Sep 27
SEA6:50 pmSeattle/Tacoma Intl
19h 55m
1 stop
LIS10:45 pmLisbon Humberto Delgado
Oct 8
LIS5:05 amLisbon Humberto Delgado
17h 17m
2 stops
SEA2:22 pmSeattle/Tacoma Intl
$801

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 July 17, 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
Quickest round-trip

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Mon 9/28

3:40 pm-1:50 pm

1 stop14h 10m

Lisbon Humberto Delgado

Tue 10/20

3:00 pm-8:40 pm

1 stop13h 40m

$611

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Sun 9/27

7:00 pm-1:50 pm

1 stop34h 50m

Lisbon Humberto Delgado

Thu 10/8

3:00 pm-5:55 pm

1 stop34h 55m

$618

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Sun 9/27

7:00 pm-1:50 pm

1 stop34h 50m

Lisbon Humberto Delgado

Thu 10/8

3:00 pm-5:55 pm

1 stop34h 55m

$619

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Mon 9/21

3:40 pm-1:50 pm

1 stop14h 10m

Lisbon Humberto Delgado

Tue 9/29

3:00 pm-8:40 pm

1 stop13h 40m

$622

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Sun 9/20

7:00 pm-1:50 pm

1 stop34h 50m

Lisbon Humberto Delgado

Tue 9/29

3:00 pm-8:40 pm

1 stop13h 40m

$634

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Mon 9/28

3:40 pm-1:50 pm

1 stop14h 10m

Lisbon Humberto Delgado

Thu 10/8

3:00 pm-8:40 pm

1 stop13h 40m

$648

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Mon 10/5

3:40 pm-8:30 am

3 stops32h 50m

Lisbon Humberto Delgado

Mon 10/12

5:45 pm-8:40 pm

3 stops34h 55m

$655

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Wed 9/30

3:40 pm-1:50 pm

1 stop14h 10m

Lisbon Humberto Delgado

Tue 10/13

3:00 pm-8:40 pm

1 stop13h 40m

$680

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Tue 10/13

10:30 am-9:20 am

2 stops14h 50m

Lisbon Humberto Delgado

Tue 10/20

5:05 am-2:22 pm

2 stops17h 17m

$696

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Sun 9/27

7:00 pm-1:50 pm

1 stop34h 50m

Lisbon Humberto Delgado

Tue 10/6

3:00 pm-8:40 pm

1 stop13h 40m

$702

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 $486. 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 $552.

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 $840 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 $726 on momondo.

Can stopping save me money on Seattle to Lisbon flights?

You could potentially save up to 9% on your flight if you consider stops on a Seattle to Lisbon flight.

How have Seattle to Lisbon flight prices changed over time?

As of July 2026, prices for Seattle to Lisbon flights are approximately 47% cheaper 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 35m

Direct flights

None
The fastest flight from Seattle to Lisbon takes 13h 35m
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 35m 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
710 reviews
Search Icelandair flights
Virgin AtlanticPriceFrom $420Free CancellationRating
7.5
693 reviews
Search Virgin Atlantic flights
LufthansaPriceFrom $475Free CancellationRating
6.8
8,144 reviews
Search Lufthansa flights
British AirwaysPriceFrom $482Free CancellationRating
6.7
8,124 reviews
Search British Airways flights
United AirlinesPriceFrom $488Free CancellationRating
7.4
10,006 reviews
Search United Airlines flights
American AirlinesPriceFrom $497Free CancellationRating
7.1
11,830 reviews
Search American Airlines flights
KLMPriceFrom $503Free CancellationRating
7.8
1,541 reviews
Search KLM flights
Air FrancePriceFrom $505Free CancellationRating
7.5
1,626 reviews
Search Air France flights
Aer LingusPriceFrom $523Free CancellationRating
7.3
1,671 reviews
Search Aer Lingus flights
Air CanadaPriceFrom $543Free CancellationRating
7.1
11,351 reviews
Search Air Canada flights

Traveling to a place near Lisbon?

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

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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