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Cheap flights from Seattle to Lisbon from $289

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
2:35 pm - 12:50 pmSEA  Seattle/Tacoma Intl-LIS Lisbon Humberto Delgado
14h 15m1 stop Reykjavik Keflavik Intl
Icelandair Logo
2:00 pm - 5:00 pmLIS  Lisbon Humberto Delgado-SEA Seattle/Tacoma Intl
35h 00m1 stop Reykjavik Keflavik Intl
$698Icelandair
Sat, Dec 5 - Sun, Dec 13
Multiple Airlines Logo
7:00 pm - 12:35 pmSEA  Seattle/Tacoma Intl-LIS Lisbon Humberto Delgado
33h 35m3 stops Reykjavik Keflavik Intl Stockholm Arlanda Warsaw Frederic Chopin
Multiple Airlines Logo
3:00 pm - 6:00 pmLIS  Lisbon Humberto Delgado-SEA Seattle/Tacoma Intl
34h 00m3 stops Warsaw Frederic Chopin Stockholm Arlanda Reykjavik Keflavik Intl
$716Multiple Airlines
Mon, Oct 19 - Mon, Oct 26
Multiple Airlines Logo
10:10 am - 10:40 amSEA  Seattle/Tacoma Intl-LIS Lisbon Humberto Delgado
17h 30m2 stops Vancouver Intl Montreal Pierre Elliott Trudeau Intl
Multiple Airlines Logo
5:00 am - 12:00 pmLIS  Lisbon Humberto Delgado-SEA Seattle/Tacoma Intl
15h 00m1 stop Frankfurt am Main
$720Multiple Airlines
Mon, Oct 26 - Wed, Nov 11
Icelandair Logo
2:35 pm - 12:50 pmSEA  Seattle/Tacoma Intl-LIS Lisbon Humberto Delgado
14h 15m1 stop Reykjavik Keflavik Intl
Icelandair Logo
2:00 pm - 5:00 pmLIS  Lisbon Humberto Delgado-SEA Seattle/Tacoma Intl
35h 00m1 stop Reykjavik Keflavik Intl
$723Icelandair
Sat, Nov 7 - Sun, Nov 22
Air Canada Logo
7:55 am - 11:05 amSEA  Seattle/Tacoma Intl-LIS Lisbon Humberto Delgado
19h 10m1 stop Toronto Pearson Intl
Air Canada Logo
6:05 am - 6:22 pmLIS  Lisbon Humberto Delgado-SEA Seattle/Tacoma Intl
20h 17m2 stops Munich Franz Josef Strauss Vancouver Intl
$729Air Canada
Sun, Oct 18 - Tue, Nov 3
Lufthansa Logo
3:15 pm - 10:40 amSEA  Seattle/Tacoma Intl-LIS Lisbon Humberto Delgado
35h 25m2 stops Vancouver Intl Montreal Pierre Elliott Trudeau Intl
Lufthansa Logo
5:00 am - 12:00 pmLIS  Lisbon Humberto Delgado-SEA Seattle/Tacoma Intl
15h 00m1 stop Frankfurt am Main
$736Lufthansa
Sun, Nov 8 - Wed, Nov 18
Air Canada Logo
3:15 pm - 6:55 amSEA  Seattle/Tacoma Intl-LIS Lisbon Humberto Delgado
31h 40m2 stops Vancouver Intl Montreal Pierre Elliott Trudeau Intl
Air Canada Logo
5:00 am - 9:32 amLIS  Lisbon Humberto Delgado-SEA Seattle/Tacoma Intl
36h 32m2 stops Frankfurt am Main Vancouver Intl
$743Air Canada
Tue, Nov 10 - Wed, Nov 18
United Airlines Logo
8:09 am - 10:20 amSEA  Seattle/Tacoma Intl-LIS Lisbon Humberto Delgado
18h 11m1 stop Washington, D.C. Dulles Intl
United Airlines Logo
5:00 am - 12:00 pmLIS  Lisbon Humberto Delgado-SEA Seattle/Tacoma Intl
15h 00m1 stop Frankfurt am Main
$744United Airlines
Wed, Nov 11 - Thu, Nov 19
United Airlines Logo
6:30 am - 8:10 amSEA  Seattle/Tacoma Intl-LIS Lisbon Humberto Delgado
17h 40m1 stop Newark
United Airlines Logo
5:00 am - 12:00 pmLIS  Lisbon Humberto Delgado-SEA Seattle/Tacoma Intl
15h 00m1 stop Frankfurt am Main
$744United Airlines
Tue, Nov 10 - Thu, Nov 19
Lufthansa Logo
2:50 pm - 1:30 pmSEA  Seattle/Tacoma Intl-LIS Lisbon Humberto Delgado
14h 40m1 stop Munich Franz Josef Strauss
Lufthansa Logo
5:00 am - 12:00 pmLIS  Lisbon Humberto Delgado-SEA Seattle/Tacoma Intl
15h 00m1 stop Frankfurt am Main
$744Lufthansa
Sun, Nov 8 - Wed, Nov 18

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Air Canada flights from Seattle to Lisbon

Our best Air Canada deals on Seattle to Lisbon flight tickets
Air Canada
Oct 18
SEA7:55 amSeattle/Tacoma Intl
19h 10m
1 stop
LIS11:05 amLisbon Humberto Delgado
Nov 3
LIS6:05 amLisbon Humberto Delgado
20h 17m
2 stops
SEA6:22 pmSeattle/Tacoma Intl
$729
Air Canada
Nov 10
SEA3:15 pmSeattle/Tacoma Intl
31h 40m
2 stops
LIS6:55 amLisbon Humberto Delgado
Nov 18
LIS5:00 amLisbon Humberto Delgado
36h 32m
2 stops
SEA9:32 amSeattle/Tacoma Intl
$743
Air Canada
Oct 26
SEA8:40 amSeattle/Tacoma Intl
19h 00m
2 stops
LIS10:40 amLisbon Humberto Delgado
Nov 11
LIS5:00 amLisbon Humberto Delgado
23h 59m
2 stops
SEA8:59 pmSeattle/Tacoma Intl
$754

United Airlines flights from Seattle to Lisbon

Our best United Airlines deals on Seattle to Lisbon flight tickets
United Airlines
Nov 8
SEA8:09 amSeattle/Tacoma Intl
17h 56m
1 stop
LIS10:05 amLisbon Humberto Delgado
Nov 18
LIS5:00 amLisbon Humberto Delgado
15h 00m
1 stop
SEA12:00 pmSeattle/Tacoma Intl
$744
United Airlines
Nov 8
SEA8:09 amSeattle/Tacoma Intl
17h 56m
1 stop
LIS10:05 amLisbon Humberto Delgado
Nov 17
LIS12:50 pmLisbon Humberto Delgado
34h 42m
2 stops
SEA3:32 pmSeattle/Tacoma Intl
$747
United Airlines
Nov 7
SEA11:17 pmSeattle/Tacoma Intl
26h 48m
2 stops
LIS10:05 amLisbon Humberto Delgado
Nov 18
LIS5:00 amLisbon Humberto Delgado
15h 00m
1 stop
SEA12:00 pmSeattle/Tacoma Intl
$749

momondo Fare Finder

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

Fly from

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Route

Depart

Return

Price

Cheapest round-trip

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Sat 12/5

2:35 pm-12:50 pm

1 stop14h 15m

Lisbon Humberto Delgado

Sun 12/13

2:00 pm-5:00 pm

1 stop35h 00m

$698

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Mon 10/19

7:00 pm-12:35 pm

3 stops33h 35m

Lisbon Humberto Delgado

Mon 10/26

3:00 pm-6:00 pm

3 stops34h 00m

$716

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Mon 10/26

10:10 am-10:40 am

2 stops17h 30m

Lisbon Humberto Delgado

Wed 11/11

5:00 am-12:00 pm

1 stop15h 00m

$720

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Sat 11/7

2:35 pm-12:50 pm

1 stop14h 15m

Lisbon Humberto Delgado

Sun 11/22

2:00 pm-5:00 pm

1 stop35h 00m

$723

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Sun 10/18

7:55 am-11:05 am

1 stop19h 10m

Lisbon Humberto Delgado

Tue 11/3

6:05 am-6:22 pm

2 stops20h 17m

$729

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Sun 11/8

3:15 pm-10:40 am

2 stops35h 25m

Lisbon Humberto Delgado

Wed 11/18

5:00 am-12:00 pm

1 stop15h 00m

$736

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Tue 11/10

3:15 pm-6:55 am

2 stops31h 40m

Lisbon Humberto Delgado

Wed 11/18

5:00 am-9:32 am

2 stops36h 32m

$743

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Wed 11/11

8:09 am-10:20 am

1 stop18h 11m

Lisbon Humberto Delgado

Thu 11/19

5:00 am-12:00 pm

1 stop15h 00m

$744

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Tue 11/10

6:30 am-8:10 am

1 stop17h 40m

Lisbon Humberto Delgado

Thu 11/19

5:00 am-12:00 pm

1 stop15h 00m

$744
Quickest round-trip

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Sun 11/8

2:50 pm-1:30 pm

1 stop14h 40m

Lisbon Humberto Delgado

Wed 11/18

5:00 am-12:00 pm

1 stop15h 00m

$744

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?

Prices are currently low for flights on this route.

Typical prices usually range from $780 to $1,120.
The lowest price recently found on this route was $698.

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 $459. 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 $852 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 $755 on momondo.

Can stopping save me money on Seattle to Lisbon flights?

You could potentially save up to 32% 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 September 2026, prices for Seattle to Lisbon flights are approximately 29% 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

Best Price Found

$289

Fastest flight time

13h 45m

Direct flights

None
The best one-way flight to Lisbon from Seattle in the past 72 hours is $289. The best round-trip flight deal from Seattle to Lisbon found on momondo in the last 72 hours is $698.
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
6.9
740 reviews
Search Icelandair flights
LufthansaPriceFrom $471Free CancellationRating
6.8
8,225 reviews
Search Lufthansa flights
British AirwaysPriceFrom $482Free CancellationRating
6.7
8,207 reviews
Search British Airways flights
United AirlinesPriceFrom $482Free CancellationRating
7.4
10,174 reviews
Search United Airlines flights
American AirlinesPriceFrom $497Free CancellationRating
7.1
12,045 reviews
Search American Airlines flights
KLMPriceFrom $503Free CancellationRating
7.8
1,569 reviews
Search KLM flights
Air FrancePriceFrom $504Free CancellationRating
7.5
1,645 reviews
Search Air France flights
Air CanadaPriceFrom $543Free CancellationRating
7.1
11,586 reviews
Search Air Canada flights
DeltaPriceFrom $554Free CancellationRating
7.8
8,574 reviews
Search Delta flights
Scandinavian AirlinesPriceFrom $567Free CancellationRating
7.4
1,979 reviews
Search Scandinavian Airlines flights

Traveling to a place near Lisbon?

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

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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