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Cheap flights from Seattle to Lisbon from $261

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 2/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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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.
United Airlines Logo
7:00 am - 8:10 amSEA-LIS
17h 10m2 stops
United Airlines Logo
11:20 am - 11:49 amLIS-SEA
32h 29m2 stops
$494United Airlines
Find Deal
lun., feb. 9 - lun., feb. 23
United Airlines Logo
8:10 am - 8:10 amSEA-LIS
16h 00m2 stops
United Airlines Logo
5:00 am - 12:10 pmLIS-SEA
15h 10m1 stop
$495United Airlines
Find Deal
mié., dic. 3 - jue., dic. 11
Air Canada Logo
8:00 pm - 7:55 amSEA-LIS
27h 55m2 stops
Air Canada Logo
11:20 am - 10:16 pmLIS-SEA
41h 56m2 stops
$496Air Canada
Find Deal
mié., mar. 4 - jue., mar. 12
Air Canada Logo
8:00 pm - 9:20 amSEA-LIS
29h 20m2 stops
Air Canada Logo
10:50 am - 9:31 amLIS-SEA
30h 41m2 stops
$497Air Canada
Find Deal
mié., ene. 7 - dom., ene. 18
Air Canada Logo
5:50 am - 7:55 amSEA-LIS
18h 05m2 stops
Air Canada Logo
10:50 am - 10:16 pmLIS-SEA
18h 26m1 stop
$498Air Canada
Find Deal
jue., feb. 19 - dom., mar. 8
Lufthansa Logo
3:10 pm - 3:15 pmSEA-LIS
16h 05m1 stop
Lufthansa Logo
11:20 am - 7:16 pmLIS-SEA
39h 56m2 stops
$499Lufthansa
Find Deal
mié., ene. 7 - mar., ene. 13
Air Canada Logo
3:40 pm - 9:20 amSEA-LIS
33h 40m2 stops
Air Canada Logo
5:00 am - 10:16 pmLIS-SEA
25h 16m2 stops
$500Air Canada
Find Deal
dom., nov. 30 - mié., dic. 10
United Airlines Logo
5:11 pm - 10:15 amSEA-LIS
33h 04m2 stops
United Airlines Logo
5:00 am - 12:10 pmLIS-SEA
15h 10m1 stop
$501United Airlines
Find Deal
sáb., dic. 6 - mar., dic. 16
Air Canada Logo
3:40 pm - 9:20 amSEA-LIS
57h 40m2 stops
Air Canada Logo
11:20 am - 3:01 pmLIS-SEA
34h 41m2 stops
$503Air Canada
Find Deal
vie., feb. 27 - lun., mar. 9
Air Canada Logo
8:10 am - 8:55 amSEA-LIS
16h 45m2 stops
Air Canada Logo
11:20 am - 10:16 pmLIS-SEA
18h 56m1 stop
$504Air Canada
Find Deal
sáb., ene. 10 - lun., feb. 23

United Airlines flights from Seattle to Lisbon

Our best United Airlines deals on Seattle to Lisbon flight tickets
United Airlines
Nov 26
SEA8:10 amSeattle/Tacoma Intl
16h 45m
1 stop
LIS8:55 amLisbon Humberto Delgado
Dec 4
LIS10:55 amLisbon Humberto Delgado
42h 05m
3 stops
SEA9:00 pmSeattle/Tacoma Intl
$494
Find similar
United Airlines
Dec 3
SEA7:00 amSeattle/Tacoma Intl
17h 10m
2 stops
LIS8:10 amLisbon Humberto Delgado
Dec 9
LIS5:00 amLisbon Humberto Delgado
15h 10m
1 stop
SEA12:10 pmSeattle/Tacoma Intl
$495
Find similar
United Airlines
Dec 3
SEA5:00 amSeattle/Tacoma Intl
19h 10m
2 stops
LIS8:10 amLisbon Humberto Delgado
Dec 12
LIS11:20 amLisbon Humberto Delgado
36h 47m
2 stops
SEA4:07 pmSeattle/Tacoma Intl
$503
Find similar

Air Canada flights from Seattle to Lisbon

Our best Air Canada deals on Seattle to Lisbon flight tickets
Air Canada
Mar 4
SEA8:00 pmSeattle/Tacoma Intl
27h 55m
2 stops
LIS7:55 amLisbon Humberto Delgado
Mar 12
LIS11:20 amLisbon Humberto Delgado
41h 56m
2 stops
SEA10:16 pmSeattle/Tacoma Intl
$496
Find similar
Air Canada
Jan 7
SEA8:00 pmSeattle/Tacoma Intl
29h 20m
2 stops
LIS9:20 amLisbon Humberto Delgado
Jan 18
LIS10:50 amLisbon Humberto Delgado
19h 26m
1 stop
SEA10:16 pmSeattle/Tacoma Intl
$497
Find similar
Air Canada
Dec 3
SEA5:50 amSeattle/Tacoma Intl
19h 05m
2 stops
LIS8:55 amLisbon Humberto Delgado
Dec 9
LIS5:00 amLisbon Humberto Delgado
25h 16m
2 stops
SEA10:16 pmSeattle/Tacoma Intl
$499
Find similar

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 noviembre 20, 2025.
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

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

lun. 2/9

7:00 am-8:10 am

2 stops17h 10m

Lisbon Humberto Delgado

lun. 2/23

11:20 am-11:49 am

2 stops32h 29m

$494

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

mié. 12/3

8:10 am-8:10 am

2 stops16h 00m

Lisbon Humberto Delgado

jue. 12/11

5:00 am-12:10 pm

1 stop15h 10m

$495

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

mié. 3/4

8:00 pm-7:55 am

2 stops27h 55m

Lisbon Humberto Delgado

jue. 3/12

11:20 am-10:16 pm

2 stops41h 56m

$496

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

mié. 1/7

8:00 pm-9:20 am

2 stops29h 20m

Lisbon Humberto Delgado

dom. 1/18

10:50 am-9:31 am

2 stops30h 41m

$497

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

jue. 2/19

5:50 am-7:55 am

2 stops18h 05m

Lisbon Humberto Delgado

dom. 3/8

10:50 am-10:16 pm

1 stop18h 26m

$498

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

mié. 1/7

3:10 pm-3:15 pm

1 stop16h 05m

Lisbon Humberto Delgado

mar. 1/13

11:20 am-7:16 pm

2 stops39h 56m

$499

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

dom. 11/30

3:40 pm-9:20 am

2 stops33h 40m

Lisbon Humberto Delgado

mié. 12/10

5:00 am-10:16 pm

2 stops25h 16m

$500

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

sáb. 12/6

5:11 pm-10:15 am

2 stops33h 04m

Lisbon Humberto Delgado

mar. 12/16

5:00 am-12:10 pm

1 stop15h 10m

$501

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

vie. 2/27

3:40 pm-9:20 am

2 stops57h 40m

Lisbon Humberto Delgado

lun. 3/9

11:20 am-3:01 pm

2 stops34h 41m

$503

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

sáb. 1/10

8:10 am-8:55 am

2 stops16h 45m

Lisbon Humberto Delgado

lun. 2/23

11:20 am-10:16 pm

1 stop18h 56m

$504

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 cheapest month to fly to Lisbon?

In general, November 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 $641. If you are unable to visit Lisbon during the month of November, then departing from Seattle during the month January is also very affordable. Most momondo users find prices during this month for around $705.

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 $901 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 $774 on momondo.

Can stopping save me money on Seattle to Lisbon flights?

You could potentially save up to 14% 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 November 2025, prices for Seattle to Lisbon flights are approximately 20% 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

Direct flights

None
There are no direct flights from Seattle to Lisbon. There are no popular flight routes from Seattle to Lisbon.
Search flight deals

  • 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. 14h 05m 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 $358Free CancellationRating
7.0
581 reviews
Search Icelandair flights
LufthansaPriceFrom $517Free CancellationRating
6.8
7,579 reviews
Search Lufthansa flights
British AirwaysPriceFrom $534Free CancellationRating
6.7
7,533 reviews
Search British Airways flights
Air CanadaPriceFrom $543Free CancellationRating
7.1
10,462 reviews
Search Air Canada flights
United AirlinesPriceFrom $543Free CancellationRating
7.4
9,027 reviews
Search United Airlines flights
Air FrancePriceFrom $560Free CancellationRating
7.4
1,493 reviews
Search Air France flights
SWISSPriceFrom $562Free CancellationRating
7.5
1,788 reviews
Search SWISS flights
KLMPriceFrom $566Free CancellationRating
7.7
1,412 reviews
Search KLM flights
American AirlinesPriceFrom $621Free CancellationRating
7.2
11,045 reviews
Search American Airlines flights
Aer LingusPriceFrom $627Free CancellationRating
7.2
1,377 reviews
Search Aer Lingus flights

Traveling to a place near Lisbon?

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