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Cheap flights from Seattle to Lisbon from $267

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 9/11. 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
0 bags

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Cheap round-trip flights

 Logo
10:00 am - 9:20 amSEA-LIS
39h 20m2 stops
 Logo
5:00 am - 12:10 pmLIS-SEA
15h 10m1 stop
mar., nov. 25 - vie., dic. 5
 Logo
3:10 pm - 9:20 amSEA-LIS
59h 10m2 stops
 Logo
6:10 am - 1:20 pmLIS-SEA
15h 10m1 stop
lun., oct. 27 - vie., nov. 28
United Airlines Logo
8:36 am - 8:10 amSEA-LIS
15h 34m2 stops
United Airlines Logo
11:00 am - 3:57 pmLIS-SEA
36h 57m2 stops
$521United Airlines
Find Deal
sáb., dic. 6 - mar., dic. 16
United Airlines Logo
8:00 am - 10:15 amSEA-LIS
18h 15m1 stop
United Airlines Logo
5:00 am - 12:10 pmLIS-SEA
15h 10m1 stop
$527United Airlines
Find Deal
sáb., dic. 6 - mar., dic. 16
British Airways Logo
8:20 pm - 10:55 amSEA-LIS
30h 35m1 stop
British Airways Logo
10:45 am - 4:55 pmLIS-SEA
14h 10m1 stop
$562British Airways
Find Deal
vie., oct. 24 - vie., nov. 14
British Airways Logo
7:50 pm - 9:55 pmSEA-LIS
19h 05m1 stop
British Airways Logo
12:55 pm - 5:55 pmLIS-SEA
36h 00m1 stop
$563British Airways
Find Deal
jue., oct. 30 - sáb., mar. 14
Delta Logo
7:20 am - 9:00 amSEA-LIS
17h 40m1 stop
Delta Logo
11:15 am - 10:13 pmLIS-SEA
18h 58m1 stop
$572Delta
Find Deal
dom., dic. 7 - jue., dic. 18
Delta Logo
12:40 am - 8:00 amSEA-LIS
23h 20m2 stops
Delta Logo
10:00 am - 7:29 pmLIS-SEA
17h 29m1 stop
$577Delta
Find Deal
mar., dic. 2 - mar., dic. 16
Air France Logo
7:20 am - 9:00 amSEA-LIS
17h 40m1 stop
Air France Logo
10:00 am - 7:29 pmLIS-SEA
17h 29m1 stop
$578Air France
Find Deal
dom., dic. 7 - lun., dic. 15
Air France Logo
8:25 am - 10:00 amSEA-LIS
17h 35m2 stops
Air France Logo
11:15 am - 9:13 pmLIS-SEA
16h 58m1 stop
$593Air France
Find Deal
sáb., oct. 25 - sáb., nov. 1

Icelandair flights from Seattle to Lisbon

Our best Icelandair deals on Seattle to Lisbon flight tickets
Icelandair
Aug 9
SEA3:45 pmSeattle/Tacoma Intl
21h 35m
1 stop
LIS9:20 pmLisbon Humberto Delgado
Aug 24
LIS10:20 pmLisbon Humberto Delgado
21h 05m
1 stop
SEA11:25 amSeattle/Tacoma Intl
Icelandair
Aug 9
SEA7:00 pmSeattle/Tacoma Intl
18h 20m
1 stop
LIS9:20 pmLisbon Humberto Delgado
Aug 24
LIS10:20 pmLisbon Humberto Delgado
30h 20m
1 stop
SEA8:40 pmSeattle/Tacoma Intl
Icelandair
Aug 16
SEA3:45 pmSeattle/Tacoma Intl
21h 35m
1 stop
LIS9:20 pmLisbon Humberto Delgado
Aug 24
LIS10:20 pmLisbon Humberto Delgado
21h 05m
1 stop
SEA11:25 amSeattle/Tacoma Intl

United Airlines flights from Seattle to Lisbon

Our best United Airlines deals on Seattle to Lisbon flight tickets
United Airlines
Dec 6
SEA8:36 amSeattle/Tacoma Intl
15h 34m
2 stops
LIS8:10 amLisbon Humberto Delgado
Dec 16
LIS11:00 amLisbon Humberto Delgado
36h 57m
2 stops
SEA3:57 pmSeattle/Tacoma Intl
United Airlines
Dec 6
SEA8:00 amSeattle/Tacoma Intl
18h 15m
1 stop
LIS10:15 amLisbon Humberto Delgado
Dec 16
LIS5:00 amLisbon Humberto Delgado
15h 10m
1 stop
SEA12:10 pmSeattle/Tacoma Intl
United Airlines
Dec 6
SEA8:36 amSeattle/Tacoma Intl
15h 34m
2 stops
LIS8:10 amLisbon Humberto Delgado
Dec 15
LIS5:00 amLisbon Humberto Delgado
15h 10m
1 stop
SEA12:10 pmSeattle/Tacoma Intl

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 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 $749. 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 $759.

What is the cheapest day to depart on your flight to Lisbon?

Our data shows that Monday is the least expensive day to fly to Lisbon. Tickets to fly out on this day can be as low as $908. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from Seattle to Lisbon for around $1,111.

What is the cheapest time of day to depart on your flight to Lisbon?

The cheapest time of day to fly to Lisbon is in the afternoon when flights can be purchased for as low as $959. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $1,074 on average. Flights to Lisbon from Seattle at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

How far in advance should I book a flight 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 $966 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 $882 on momondo.

How have Seattle to Lisbon flight prices changed over time?

As of June 2025, prices for Seattle to Lisbon flights are approximately 33% 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

$267

Fastest flight time

13h 35m

Direct flights

None

Airports in Lisbon

1 airport
The best one-way flight to Lisbon from Seattle in the past 72 hours is $267. The best round-trip flight deal from Seattle to Lisbon found on momondo in the last 72 hours is $509.
The fastest flight from Seattle to Lisbon takes 13h 35m
There are no direct flights from Seattle to Lisbon. Popular non-direct route for this connection is Seattle/Tacoma Intl Airport - Lisbon Humberto Delgado Airport.
There is 1 airport near Lisbon: Lisbon Humberto Delgado (LIS)

  • 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 50m 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 $477Free CancellationRating
7.0
502 reviews
Search Icelandair flights
LufthansaPriceFrom $581Free CancellationRating
6.7
7,156 reviews
Search Lufthansa flights
British AirwaysPriceFrom $602Free CancellationRating
6.6
7,031 reviews
Search British Airways flights
American AirlinesPriceFrom $627Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
Scandinavian AirlinesPriceFrom $652Free CancellationRating
7.3
1,393 reviews
Search Scandinavian Airlines flights
Aer LingusPriceFrom $654Free CancellationRating
7.1
1,120 reviews
Search Aer Lingus flights
Air FrancePriceFrom $688Free CancellationRating
7.5
1,467 reviews
Search Air France flights
DeltaPriceFrom $694Free CancellationRating
8.0
7,964 reviews
Search Delta flights
Air CanadaPriceFrom $695Free CancellationRating
7.1
9,568 reviews
Search Air Canada flights
United AirlinesPriceFrom $700Free CancellationRating
7.4
8,810 reviews
Search United Airlines flights

Traveling to a place near Lisbon?

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

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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lun. 6/23
lun. 6/30

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